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scummvm/engines/sci/engine/script_patches.cpp
Colin Snover 3303a88139 SCI: Improve audio volume & settings sync code 
This patch includes enhancements to the ScummVM integration with
SCI engine, with particular focus on SCI32 support.

1. Fixes audio volumes syncing erroneously to ScummVM in games
   that modify the audio volume without user action (e.g. SCI1.1
   talkies that reduce music volume during speech playback). Now,
   volumes will only be synchronised when the user interacts with
   the game's audio settings. This mechanism works by looking for
   a known volume control object in the stack, and only syncing
   when the control object is present. (Ports and planes were
   researched and found unreliable.)

2. Fixes audio syncing in SCI32 games that do not set game
   volumes through kDoSoundMasterVolume/kDoAudioVolume, like GK1,
   GK2, Phant1, and Torin.

3. Fixes speech/subtitles syncing in SCI32 games that do not use
   global 90, like LSL6hires.

4. Fixes in-game volume controls in SCI32 games reflecting
   outdated audio volumes when a change is made during the game
   from the ScummVM launcher.

5. Fixes SCI32 games that would restore volumes from save games
   or reset volumes on startup, which caused game volumes to be
   out-of-sync with ScummVM when started.

6. ScummVM integration code for audio sync has been abstracted
   into a new GuestAdditions class. This keeps the ScummVM-
   specific code all in one place, with only small hooks into the
   engine code. ScummVM integrated save/load code should probably
   also go here in the future.

Fixes Trac#9700.
2017-04-21 19:00:27 -05:00

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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "sci/sci.h"
#include "sci/engine/kernel.h"
#include "sci/engine/script.h"
#include "sci/engine/state.h"
#include "sci/engine/features.h"
#include "sci/engine/script_patches.h"
#include "common/util.h"
namespace Sci {
// IMPORTANT:
// every patch entry needs the following:
// - script number (pretty obvious)
//
// - apply count
// specifies the number of times a patch is supposed to get applied.
// Most of the time, it should be 1.
//
// - magicDWORD + magicOffset
// please ALWAYS put 0 for those two. Both will get filled out at runtime by the patcher.
//
// - signature data (is used to identify certain script code, that needs patching)
// every signature needs to contain SIG_MAGICDWORD once.
// The following 4 bytes after SIG_MAGICDWORD - which don't have to be fixed, you may for example
// use SIG_SELECTOR16, will get used to quickly search for a partly match before verifying that
// the whole signature actually matches. If it's not included, the script patcher will error() out
// right when loading up the game.
// If selector-IDs are included, please use SIG_SELECTOR16 + SIG_SELECTOR8 [1]. Simply
// specify the selector that way, so that the patcher will search for the specific
// selector instead of looking for a hardcoded value. Selectors may not be the same
// between game versions.
// For UINT16s either use SIG_UINT16 or SIG_SELECTOR16.
// Macintosh versions of SCI games are using BE ordering instead of LE since SCI1.1 for UINT16s in scripts
// By using those 2 commands, it's possible to make patches work for PC and Mac versions of the same game.
// You may also skip bytes by using the SIG_ADDTOOFFSET command
// Every signature data needs to get terminated using SIGNATURE_END
//
// - patch data (is used for actually patching scripts)
// When a match is found, the patch data will get applied.
// Patch data is similar to signature data. Just use PATCH_SELECTOR16 + PATCH_SELECTOR8 [1]
// for patching in selectors.
// There are also patch specific commands.
// Those are PATCH_GETORIGINALBYTE, which fetches a byte from the original script
// and PATCH_GETORIGINALBYTEADJUST, which does the same but gets a second value
// from the uint16 array and uses that value to adjust the original byte.
// Every patch data needs to get terminated using PATCH_END
//
// - and please always add a comment about why the patch was done and what's causing issues.
// If possible make sure, that the patch works on localized (or just different) game versions
// as well in case those need patching too.
//
// [1] - selectors need to get specified in selectorTable[] and ScriptPatcherSelectors-enum
// before they can get used using the SIG_SELECTORx and PATCH_SELECTORx commands.
// You have to use the exact same order in both the table and the enum, otherwise
// it won't work.
static const char *const selectorNameTable[] = {
"cycles", // system selector
"seconds", // system selector
"init", // system selector
"dispose", // system selector
"new", // system selector
"curEvent", // system selector
"disable", // system selector
"doit", // system selector
"show", // system selector
"x", // system selector
"cel", // system selector
"setMotion", // system selector
"overlay", // system selector
"deskSarg", // Gabriel Knight
"localize", // Freddy Pharkas
"put", // Police Quest 1 VGA
"say", // Quest For Glory 1 VGA
"contains", // Quest For Glory 2
"solvePuzzle", // Quest For Glory 3
"timesShownID", // Space Quest 1 VGA
"startText", // King's Quest 6 CD / Laura Bow 2 CD for audio+text support
"startAudio", // King's Quest 6 CD / Laura Bow 2 CD for audio+text support
"modNum", // King's Quest 6 CD / Laura Bow 2 CD for audio+text support
"cycler", // Space Quest 4 / system selector
"setLoop", // Laura Bow 1 Colonel's Bequest
"ignoreActors", // Laura Bow 1 Colonel's Bequest
#ifdef ENABLE_SCI32
"newWith", // SCI2 array script
"scrollSelections", // GK2
#endif
NULL
};
enum ScriptPatcherSelectors {
SELECTOR_cycles = 0,
SELECTOR_seconds,
SELECTOR_init,
SELECTOR_dispose,
SELECTOR_new,
SELECTOR_curEvent,
SELECTOR_disable,
SELECTOR_doit,
SELECTOR_show,
SELECTOR_x,
SELECTOR_cel,
SELECTOR_setMotion,
SELECTOR_overlay,
SELECTOR_deskSarg,
SELECTOR_localize,
SELECTOR_put,
SELECTOR_say,
SELECTOR_contains,
SELECTOR_solvePuzzle,
SELECTOR_timesShownID,
SELECTOR_startText,
SELECTOR_startAudio,
SELECTOR_modNum,
SELECTOR_cycler,
SELECTOR_setLoop,
SELECTOR_ignoreActors
#ifdef ENABLE_SCI32
,
SELECTOR_newWith,
SELECTOR_scrollSelections
#endif
};
#ifdef ENABLE_SCI32
// It is not possible to change the directory for ScummVM save games, so disable
// the "change directory" button in the standard save dialogue
static const uint16 sci2ChangeDirSignature[] = {
0x72, SIG_ADDTOOFFSET(+2), // lofsa changeDirI
0x4a, SIG_UINT16(0x04), // send 4
SIG_MAGICDWORD,
0x36, // push
0x35, 0xF7, // ldi $f7
0x12, // and
0x36, // push
SIG_END
};
static const uint16 sci2ChangeDirPatch[] = {
PATCH_ADDTOOFFSET(+3), // lofsa changeDirI
PATCH_ADDTOOFFSET(+3), // send 4
PATCH_ADDTOOFFSET(+1), // push
0x35, 0x00, // ldi 0
PATCH_END
};
// Save game script hardcodes the maximum number of save games to 20, but
// this is an artificial constraint that does not apply to ScummVM
static const uint16 sci2NumSavesSignature1[] = {
SIG_MAGICDWORD,
0x8b, 0x02, // lsl local[2]
0x35, 0x14, // ldi 20
0x22, // lt?
SIG_END
};
static const uint16 sci2NumSavesPatch1[] = {
PATCH_ADDTOOFFSET(+2), // lsl local[2]
0x35, 0x63, // ldi 99
PATCH_END
};
static const uint16 sci2NumSavesSignature2[] = {
SIG_MAGICDWORD,
0x8b, 0x02, // lsl local[2]
0x35, 0x14, // ldi 20
0x1a, // eq?
SIG_END
};
static const uint16 sci2NumSavesPatch2[] = {
PATCH_ADDTOOFFSET(+2), // lsl local[2]
0x35, 0x63, // ldi 99
PATCH_END
};
// Phantasmagoria & SQ6 try to initialize the first entry of an int16 array
// using an empty string, which is not valid (it should be a number)
static const uint16 sci21IntArraySignature[] = {
0x38, SIG_SELECTOR16(newWith), // pushi newWith
0x7a, // push2
0x39, 0x04, // pushi $4
0x72, SIG_ADDTOOFFSET(+2), // lofsa string ""
SIG_MAGICDWORD,
0x36, // push
0x51, 0x0b, // class IntArray
0x4a, 0x8, // send $8
SIG_END
};
static const uint16 sci21IntArrayPatch[] = {
PATCH_ADDTOOFFSET(+6), // push $b9; push2; pushi $4
0x76, // push0
0x34, PATCH_UINT16(0x0001), // ldi 0001 (waste bytes)
PATCH_END
};
#endif
// ===========================================================================
// Conquests of Camelot
// At the bazaar in Jerusalem, it's possible to see a girl taking a shower.
// If you get too close, you get warned by the father - if you don't get away,
// he will kill you.
// Instead of walking there manually, it's also possible to enter "look window"
// and ego will automatically walk to the window. It seems that this is something
// that wasn't properly implemented, because instead of getting killed, you will
// get an "Oops" message in Sierra SCI.
//
// This is caused by peepingTom in script 169 not getting properly initialized.
// peepingTom calls the object behind global b9h. This global variable is
// properly initialized, when walking there manually (method fawaz::doit).
// When you instead walk there automatically (method fawaz::handleEvent), that
// global isn't initialized, which then results in the Oops-message in Sierra SCI
// and an error message in ScummVM/SCI.
//
// We fix the script by patching in a jump to the proper code inside fawaz::doit.
// Responsible method: fawaz::handleEvent
// Fixes bug: #6402
static const uint16 camelotSignaturePeepingTom[] = {
0x72, SIG_MAGICDWORD, SIG_UINT16(0x077e), // lofsa fawaz <-- start of proper initializion code
0xa1, 0xb9, // sag b9h
SIG_ADDTOOFFSET(+571), // skip 571 bytes
0x39, 0x7a, // pushi 7a <-- initialization code when walking automatically
0x78, // push1
0x7a, // push2
0x38, SIG_UINT16(0x00a9), // + 0xa9, 0x00, // pushi 00a9 - script 169
0x78, // push1
0x43, 0x02, 0x04, // call kScriptID
0x36, // push
0x81, 0x00, // lag 00
0x4a, 0x06, // send 06
0x32, SIG_UINT16(0x0520), // jmp [end of fawaz::handleEvent]
SIG_END
};
static const uint16 camelotPatchPeepingTom[] = {
PATCH_ADDTOOFFSET(+576),
0x32, PATCH_UINT16(0xfdbd), // jmp to fawaz::doit / properly init peepingTom code
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry camelotSignatures[] = {
{ true, 62, "fix peepingTom Sierra bug", 1, camelotSignaturePeepingTom, camelotPatchPeepingTom },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// stayAndHelp::changeState (0) is called when ego swims to the left or right
// boundaries of room 660. Normally a textbox is supposed to get on screen
// but the call is wrong, so not only do we get an error message the script
// is also hanging because the cue won't get sent out
// This also happens in sierra sci
// Applies to at least: PC-CD
// Responsible method: stayAndHelp::changeState
// Fixes bug: #5107
static const uint16 ecoquest1SignatureStayAndHelp[] = {
0x3f, 0x01, // link 01
0x87, 0x01, // lap param[1]
0x65, 0x14, // aTop state
0x36, // push
0x3c, // dup
0x35, 0x00, // ldi 00
0x1a, // eq?
0x31, 0x1c, // bnt [next state]
0x76, // push0
0x45, 0x01, 0x00, // callb export1 from script 0 (switching control off)
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x0122), // pushi 0122
0x78, // push1
0x76, // push0
0x81, 0x00, // lag global[0]
0x4a, 0x06, // send 06 - call ego::setMotion(0)
0x39, SIG_SELECTOR8(init), // pushi "init"
0x39, 0x04, // pushi 04
0x76, // push0
0x76, // push0
0x39, 0x17, // pushi 17
0x7c, // pushSelf
0x51, 0x82, // class EcoNarrator
0x4a, 0x0c, // send 0c - call EcoNarrator::init(0, 0, 23, self) (BADLY BROKEN!)
0x33, // jmp [end]
SIG_END
};
static const uint16 ecoquest1PatchStayAndHelp[] = {
0x87, 0x01, // lap param[1]
0x65, 0x14, // aTop state
0x36, // push
0x2f, 0x22, // bt [next state] (this optimization saves 6 bytes)
0x39, 0x00, // pushi 0 (wasting 1 byte here)
0x45, 0x01, 0x00, // callb export1 from script 0 (switching control off)
0x38, PATCH_UINT16(0x0122), // pushi 0122
0x78, // push1
0x76, // push0
0x81, 0x00, // lag global[0]
0x4a, 0x06, // send 06 - call ego::setMotion(0)
0x39, PATCH_SELECTOR8(init), // pushi "init"
0x39, 0x06, // pushi 06
0x39, 0x02, // pushi 02 (additional 2 bytes)
0x76, // push0
0x76, // push0
0x39, 0x17, // pushi 17
0x7c, // pushSelf
0x38, PATCH_UINT16(0x0280), // pushi 280 (additional 3 bytes)
0x51, 0x82, // class EcoNarrator
0x4a, 0x10, // send 10 - call EcoNarrator::init(2, 0, 0, 23, self, 640)
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry ecoquest1Signatures[] = {
{ true, 660, "CD: bad messagebox and freeze", 1, ecoquest1SignatureStayAndHelp, ecoquest1PatchStayAndHelp },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// doMyThing::changeState (2) is supposed to remove the initial text on the
// ecorder. This is done by reusing temp-space, that was filled on state 1.
// this worked in sierra sci just by accident. In our sci, the temp space
// is resetted every time, which means the previous text isn't available
// anymore. We have to patch the code because of that.
// Fixes bug: #4993
static const uint16 ecoquest2SignatureEcorder[] = {
0x31, 0x22, // bnt [next state]
0x39, 0x0a, // pushi 0a
0x5b, 0x04, 0x1e, // lea temp[1e]
0x36, // push
SIG_MAGICDWORD,
0x39, 0x64, // pushi 64
0x39, 0x7d, // pushi 7d
0x39, 0x32, // pushi 32
0x39, 0x66, // pushi 66
0x39, 0x17, // pushi 17
0x39, 0x69, // pushi 69
0x38, PATCH_UINT16(0x2631), // pushi 2631
0x39, 0x6a, // pushi 6a
0x39, 0x64, // pushi 64
0x43, 0x1b, 0x14, // call kDisplay
0x35, 0x0a, // ldi 0a
0x65, 0x20, // aTop ticks
0x33, // jmp [end]
SIG_ADDTOOFFSET(+1), // [skip 1 byte]
0x3c, // dup
0x35, 0x03, // ldi 03
0x1a, // eq?
0x31, // bnt [end]
SIG_END
};
static const uint16 ecoquest2PatchEcorder[] = {
0x2f, 0x02, // bt [to pushi 07]
0x3a, // toss
0x48, // ret
0x38, PATCH_UINT16(0x0007), // pushi 07 (parameter count) (waste 1 byte)
0x39, 0x0b, // push (FillBoxAny)
0x39, 0x1d, // pushi 29d
0x39, 0x73, // pushi 115d
0x39, 0x5e, // pushi 94d
0x38, PATCH_UINT16(0x00d7), // pushi 215d
0x78, // push1 (visual screen)
0x38, PATCH_UINT16(0x0017), // pushi 17 (color) (waste 1 byte)
0x43, 0x6c, 0x0e, // call kGraph
0x38, PATCH_UINT16(0x0005), // pushi 05 (parameter count) (waste 1 byte)
0x39, 0x0c, // pushi 12d (UpdateBox)
0x39, 0x1d, // pushi 29d
0x39, 0x73, // pushi 115d
0x39, 0x5e, // pushi 94d
0x38, PATCH_UINT16(0x00d7), // pushi 215d
0x43, 0x6c, 0x0a, // call kGraph
PATCH_END
};
// ===========================================================================
// Same patch as above for the ecorder introduction.
// Two workarounds are needed for this patch in workarounds.cpp (when calling
// kGraphFillBoxAny and kGraphUpdateBox), as there isn't enough space to patch
// the function otherwise.
// Fixes bug: #6467
static const uint16 ecoquest2SignatureEcorderTutorial[] = {
0x30, SIG_UINT16(0x0023), // bnt [next state]
0x39, 0x0a, // pushi 0a
0x5b, 0x04, 0x1f, // lea temp[1f]
0x36, // push
SIG_MAGICDWORD,
0x39, 0x64, // pushi 64
0x39, 0x7d, // pushi 7d
0x39, 0x32, // pushi 32
0x39, 0x66, // pushi 66
0x39, 0x17, // pushi 17
0x39, 0x69, // pushi 69
0x38, SIG_UINT16(0x2631), // pushi 2631
0x39, 0x6a, // pushi 6a
0x39, 0x64, // pushi 64
0x43, 0x1b, 0x14, // call kDisplay
0x35, 0x1e, // ldi 1e
0x65, 0x20, // aTop ticks
0x32, // jmp [end]
// 2 extra bytes, jmp offset
SIG_END
};
static const uint16 ecoquest2PatchEcorderTutorial[] = {
0x31, 0x23, // bnt [next state] (save 1 byte)
// The parameter count below should be 7, but we're out of bytes
// to patch! A workaround has been added because of this
0x78, // push1 (parameter count)
//0x39, 0x07, // pushi 07 (parameter count)
0x39, 0x0b, // push (FillBoxAny)
0x39, 0x1d, // pushi 29d
0x39, 0x73, // pushi 115d
0x39, 0x5e, // pushi 94d
0x38, PATCH_UINT16(0x00d7), // pushi 215d
0x78, // push1 (visual screen)
0x39, 0x17, // pushi 17 (color)
0x43, 0x6c, 0x0e, // call kGraph
// The parameter count below should be 5, but we're out of bytes
// to patch! A workaround has been added because of this
0x78, // push1 (parameter count)
//0x39, 0x05, // pushi 05 (parameter count)
0x39, 0x0c, // pushi 12d (UpdateBox)
0x39, 0x1d, // pushi 29d
0x39, 0x73, // pushi 115d
0x39, 0x5e, // pushi 94d
0x38, PATCH_UINT16(0x00d7), // pushi 215d
0x43, 0x6c, 0x0a, // call kGraph
// We are out of bytes to patch at this point,
// so we skip 494 (0x1EE) bytes to reuse this code:
// ldi 1e
// aTop 20
// jmp 030e (jump to end)
0x32, PATCH_UINT16(0x01ee), // skip 494 (0x1EE) bytes
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry ecoquest2Signatures[] = {
{ true, 50, "initial text not removed on ecorder", 1, ecoquest2SignatureEcorder, ecoquest2PatchEcorder },
{ true, 333, "initial text not removed on ecorder tutorial", 1, ecoquest2SignatureEcorderTutorial, ecoquest2PatchEcorderTutorial },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// Fan-made games
// Attention: Try to make script patches as specific as possible
// CascadeQuest::autosave in script 994 is called various times to auto-save the game.
// The script use a fixed slot "999" for this purpose. This doesn't work in ScummVM, because we do not let
// scripts save directly into specific slots, but instead use virtual slots / detect scripts wanting to
// create a new slot.
//
// For this game we patch the code to use slot 99 instead. kSaveGame also checks for Cascade Quest,
// will then check, if slot 99 is asked for and will then use the actual slot 0, which is the official
// ScummVM auto-save slot.
//
// Responsible method: CascadeQuest::autosave
// Fixes bug: #7007
static const uint16 fanmadeSignatureCascadeQuestFixAutoSaving[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x03e7), // pushi 3E7 (999d) -> save game slot 999
0x74, SIG_UINT16(0x06f8), // lofss "AutoSave"
0x89, 0x1e, // lsg global[1E]
0x43, 0x2d, 0x08, // callk SaveGame
SIG_END
};
static const uint16 fanmadePatchCascadeQuestFixAutoSaving[] = {
0x38, PATCH_UINT16((SAVEGAMEID_OFFICIALRANGE_START - 1)), // fix slot
PATCH_END
};
// EventHandler::handleEvent in Demo Quest has a bug, and it jumps to the
// wrong address when an incorrect word is typed, therefore leading to an
// infinite loop. This script bug was not apparent in SSCI, probably because
// event handling was slightly different there, so it was never discovered.
// Fixes bug: #5120
static const uint16 fanmadeSignatureDemoQuestInfiniteLoop[] = {
0x38, SIG_UINT16(0x004c), // pushi 004c
0x39, 0x00, // pushi 00
0x87, 0x01, // lap 01
0x4b, 0x04, // send 04
SIG_MAGICDWORD,
0x18, // not
0x30, SIG_UINT16(0x002f), // bnt 002f [06a5] --> jmp ffbc [0664] --> BUG! infinite loop
SIG_END
};
static const uint16 fanmadePatchDemoQuestInfiniteLoop[] = {
PATCH_ADDTOOFFSET(+10),
0x30, PATCH_UINT16(0x0032), // bnt 0032 [06a8] --> pushi 004c
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry fanmadeSignatures[] = {
{ true, 994, "Cascade Quest: fix auto-saving", 1, fanmadeSignatureCascadeQuestFixAutoSaving, fanmadePatchCascadeQuestFixAutoSaving },
{ true, 999, "Demo Quest: infinite loop on typo", 1, fanmadeSignatureDemoQuestInfiniteLoop, fanmadePatchDemoQuestInfiniteLoop },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// WORKAROUND
// Freddy Pharkas intro screen
// Sierra used inner loops for the scaling of the 2 title views.
// Those inner loops don't call kGameIsRestarting, which is why
// we do not update the screen and we also do not throttle.
//
// This patch fixes this and makes it work.
// Applies to at least: English PC-CD
// Responsible method: sTownScript::changeState(1), sTownScript::changeState(3) (script 110)
static const uint16 freddypharkasSignatureIntroScaling[] = {
0x38, SIG_ADDTOOFFSET(+2), // pushi (setLoop) (009b for PC CD)
0x78, // push1
PATCH_ADDTOOFFSET(1), // push0 for first code, push1 for second code
0x38, SIG_ADDTOOFFSET(+2), // pushi (setStep) (0143 for PC CD)
0x7a, // push2
0x39, 0x05, // pushi 05
0x3c, // dup
0x72, SIG_ADDTOOFFSET(+2), // lofsa (view)
SIG_MAGICDWORD,
0x4a, 0x1e, // send 1e
0x35, 0x0a, // ldi 0a
0xa3, 0x02, // sal local[2]
// start of inner loop
0x8b, 0x02, // lsl local[2]
SIG_ADDTOOFFSET(+43), // skip almost all of inner loop
0xa3, 0x02, // sal local[2]
0x33, 0xcf, // jmp [inner loop start]
SIG_END
};
static const uint16 freddypharkasPatchIntroScaling[] = {
// remove setLoop(), objects in heap are already prepared, saves 5 bytes
0x38,
PATCH_GETORIGINALUINT16(+6), // pushi (setStep)
0x7a, // push2
0x39, 0x05, // pushi 05
0x3c, // dup
0x72,
PATCH_GETORIGINALUINT16(+13), // lofsa (view)
0x4a, 0x18, // send 18 - adjusted
0x35, 0x0a, // ldi 0a
0xa3, 0x02, // sal local[2]
// start of new inner loop
0x39, 0x00, // pushi 00
0x43, 0x2c, 0x00, // callk GameIsRestarting <-- add this so that our speed throttler is triggered
SIG_ADDTOOFFSET(+47), // skip almost all of inner loop
0x33, 0xca, // jmp [inner loop start]
PATCH_END
};
// script 0 of freddy pharkas/CD PointsSound::check waits for a signal and if
// no signal received will call kDoSound(0xD) which is a dummy in sierra sci
// and ScummVM and will use acc (which is not set by the dummy) to trigger
// sound disposal. This somewhat worked in sierra sci, because the sample
// was already playing in the sound driver. In our case we would also stop
// the sample from playing, so we patch it out
// The "score" code is already buggy and sets volume to 0 when playing
// Applies to at least: English PC-CD
// Responsible method: unknown
static const uint16 freddypharkasSignatureScoreDisposal[] = {
0x67, 0x32, // pTos 32 (selector theAudCount)
0x78, // push1
SIG_MAGICDWORD,
0x39, 0x0d, // pushi 0d
0x43, 0x75, 0x02, // call kDoAudio
0x1c, // ne?
0x31, // bnt (-> to skip disposal)
SIG_END
};
static const uint16 freddypharkasPatchScoreDisposal[] = {
0x34, PATCH_UINT16(0x0000), // ldi 0000
0x34, PATCH_UINT16(0x0000), // ldi 0000
0x34, PATCH_UINT16(0x0000), // ldi 0000
PATCH_END
};
// script 235 of freddy pharkas rm235::init and sEnterFrom500::changeState
// disable icon 7+8 of iconbar (CD only). When picking up the canister after
// placing it down, the scripts will disable all the other icons. This results
// in IconBar::disable doing endless loops even in sierra sci, because there
// is no enabled icon left. We remove disabling of icon 8 (which is help),
// this fixes the issue.
// Applies to at least: English PC-CD
// Responsible method: rm235::init and sEnterFrom500::changeState
static const uint16 freddypharkasSignatureCanisterHang[] = {
0x38, SIG_SELECTOR16(disable), // pushi disable
0x7a, // push2
SIG_MAGICDWORD,
0x39, 0x07, // pushi 07
0x39, 0x08, // pushi 08
0x81, 0x45, // lag 45
0x4a, 0x08, // send 08 - call IconBar::disable(7, 8)
SIG_END
};
static const uint16 freddypharkasPatchCanisterHang[] = {
PATCH_ADDTOOFFSET(+3),
0x78, // push1
PATCH_ADDTOOFFSET(+2),
0x33, 0x00, // ldi 00 (waste 2 bytes)
PATCH_ADDTOOFFSET(+3),
0x06, // send 06 - call IconBar::disable(7)
PATCH_END
};
// script 215 of freddy pharkas lowerLadder::doit and highLadder::doit actually
// process keyboard-presses when the ladder is on the screen in that room.
// They strangely also call kGetEvent. Because the main User::doit also calls
// kGetEvent, it's pure luck, where the event will hit. It's the same issue
// as in QfG1VGA and if you turn dos-box to max cycles, and click around for
// ego, sometimes clicks also won't get registered. Strangely it's not nearly
// as bad as in our sci, but these differences may be caused by timing.
// We just reuse the active event, thus removing the duplicate kGetEvent call.
// Applies to at least: English PC-CD, German Floppy, English Mac
// Responsible method: lowerLadder::doit and highLadder::doit
static const uint16 freddypharkasSignatureLadderEvent[] = {
0x39, SIG_MAGICDWORD,
SIG_SELECTOR8(new), // pushi new
0x76, // push0
0x38, SIG_SELECTOR16(curEvent), // pushi curEvent
0x76, // push0
0x81, 0x50, // lag global[50]
0x4a, 0x04, // send 04 - read User::curEvent
0x4a, 0x04, // send 04 - call curEvent::new
0xa5, 0x00, // sat temp[0]
0x38, SIG_SELECTOR16(localize),
0x76, // push0
0x4a, 0x04, // send 04 - call curEvent::localize
SIG_END
};
static const uint16 freddypharkasPatchLadderEvent[] = {
0x34, 0x00, 0x00, // ldi 0000 (waste 3 bytes, overwrites first 2 pushes)
PATCH_ADDTOOFFSET(+8),
0xa5, 0x00, // sat temp[0] (waste 2 bytes, overwrites 2nd send)
PATCH_ADDTOOFFSET(+2),
0x34, 0x00, 0x00, // ldi 0000
0x34, 0x00, 0x00, // ldi 0000 (waste 6 bytes, overwrites last 3 opcodes)
PATCH_END
};
// In the Macintosh version of Freddy Pharkas, kRespondsTo is broken for
// property selectors. They hacked the script to work around the issue,
// so we revert the script back to using the values of the DOS script.
// Applies to at least: English Mac
// Responsible method: unknown
static const uint16 freddypharkasSignatureMacInventory[] = {
SIG_MAGICDWORD,
0x39, 0x23, // pushi 23
0x39, 0x74, // pushi 74
0x78, // push1
0x38, SIG_UINT16(0x0174), // pushi 0174 (on mac it's actually 0x01, 0x74)
0x85, 0x15, // lat 15
SIG_END
};
static const uint16 freddypharkasPatchMacInventory[] = {
0x39, 0x02, // pushi 02 (now matches the DOS version)
PATCH_ADDTOOFFSET(+23),
0x39, 0x04, // pushi 04 (now matches the DOS version)
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry freddypharkasSignatures[] = {
{ true, 0, "CD: score early disposal", 1, freddypharkasSignatureScoreDisposal, freddypharkasPatchScoreDisposal },
{ true, 15, "Mac: broken inventory", 1, freddypharkasSignatureMacInventory, freddypharkasPatchMacInventory },
{ true, 110, "intro scaling workaround", 2, freddypharkasSignatureIntroScaling, freddypharkasPatchIntroScaling },
{ true, 235, "CD: canister pickup hang", 3, freddypharkasSignatureCanisterHang, freddypharkasPatchCanisterHang },
{ true, 320, "ladder event issue", 2, freddypharkasSignatureLadderEvent, freddypharkasPatchLadderEvent },
SCI_SIGNATUREENTRY_TERMINATOR
};
#ifdef ENABLE_SCI32
#pragma mark -
#pragma mark Hoyle 5
// Several scripts in Hoyle5 contain a subroutine which spins on kGetTime until
// a certain number of ticks elapse. Since this wastes CPU and makes ScummVM
// unresponsive, the kWait kernel function (which was removed in SCI2) is
// reintroduced at 0x4f in kernel.cpp only for Hoyle5, and the spin subroutines
// are patched here to call that function instead.
// Applies to at least: English Demo
static const uint16 hoyle5SignatureSpinLoop[] = {
SIG_MAGICDWORD,
0x76, // push0
0x43, 0x79, SIG_UINT16(0x00), // callk GetTime, $0
0x36, // push
0x87, 0x01, // lap param[1]
0x02, // add
0xa5, 0x00, // sat temp[0]
SIG_END
};
static const uint16 hoyle5PatchSpinLoop[] = {
0x78, // push1
0x8f, 0x01, // lsp param[1]
0x43, 0x4f, PATCH_UINT16(0x02), // callk Wait, $2
0x48, // ret
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry hoyle5Signatures[] = {
{ true, 3, "remove kGetTime spin", 1, hoyle5SignatureSpinLoop, hoyle5PatchSpinLoop },
{ true, 23, "remove kGetTime spin", 1, hoyle5SignatureSpinLoop, hoyle5PatchSpinLoop },
{ true, 500, "remove kGetTime spin", 1, hoyle5SignatureSpinLoop, hoyle5PatchSpinLoop },
{ true, 64937, "remove kGetTime spin", 1, hoyle5SignatureSpinLoop, hoyle5PatchSpinLoop },
SCI_SIGNATUREENTRY_TERMINATOR
};
#pragma mark -
#pragma mark Gabriel Knight 1
// ===========================================================================
// daySixBeignet::changeState (4) is called when the cop goes out and sets cycles to 220.
// this is not enough time to get to the door, so we patch that to 23 seconds
// Applies to at least: English PC-CD, German PC-CD, English Mac
// Responsible method: daySixBeignet::changeState
static const uint16 gk1SignatureDay6PoliceBeignet[] = {
0x35, 0x04, // ldi 04
0x1a, // eq?
0x30, SIG_ADDTOOFFSET(+2), // bnt [next state check]
0x38, SIG_SELECTOR16(dispose), // pushi dispose
0x76, // push0
0x72, SIG_ADDTOOFFSET(+2), // lofsa deskSarg
0x4a, SIG_UINT16(0x0004), // send 04
SIG_MAGICDWORD,
0x34, SIG_UINT16(0x00dc), // ldi 220
0x65, SIG_ADDTOOFFSET(+1), // aTop cycles (1a for PC, 1c for Mac)
0x32, // jmp [end]
SIG_END
};
static const uint16 gk1PatchDay6PoliceBeignet[] = {
PATCH_ADDTOOFFSET(+16),
0x34, PATCH_UINT16(0x0017), // ldi 23
0x65, PATCH_GETORIGINALBYTEADJUST(+20, +2), // aTop seconds (1c for PC, 1e for Mac)
PATCH_END
};
// sargSleeping::changeState (8) is called when the cop falls asleep and sets cycles to 220.
// this is not enough time to get to the door, so we patch it to 42 seconds
// Applies to at least: English PC-CD, German PC-CD, English Mac
// Responsible method: sargSleeping::changeState
static const uint16 gk1SignatureDay6PoliceSleep[] = {
0x35, 0x08, // ldi 08
0x1a, // eq?
0x31, SIG_ADDTOOFFSET(+1), // bnt [next state check]
SIG_MAGICDWORD,
0x34, SIG_UINT16(0x00dc), // ldi 220
0x65, SIG_ADDTOOFFSET(+1), // aTop cycles (1a for PC, 1c for Mac)
0x32, // jmp [end]
SIG_END
};
static const uint16 gk1PatchDay6PoliceSleep[] = {
PATCH_ADDTOOFFSET(+5),
0x34, PATCH_UINT16(0x002a), // ldi 42
0x65, PATCH_GETORIGINALBYTEADJUST(+9, +2), // aTop seconds (1c for PC, 1e for Mac)
PATCH_END
};
// At the start of day 5, there is like always some dialogue with Grace.
//
// The dialogue script code about the drum book + veve newspaper clip is a bit broken.
//
// In case the player already has the veve, but is supposed to get the drum book, then the drum book
// dialogue is repeated twice and the veve newspaper dialogue is also repeated (although it was played on day 4
// in such case already).
//
// Drum book dialogue is called twice.
// Once via GetTheVeve::changeState(0) and a second time via GetTheVeve::changeState(11).
//
// GetTheVeve::changeState(0) would also play the first line of the veve pattern newspaper and that's skipped,
// when the player is supposed to get the drum book.
// GetTheVeve::changeState(1) up to state 10 will do the dialogue about the veve newspaper.
// At the start of state 1 though, the player will get the drum book in case he ask for research.
// Right after that the scripts check, if the player has the drum book and then go the veve newspaper route.
//
// We fix this by skipping the drum book check in case the player just got the drum book.
// The scripts will then skip to state 12, skipping over the second drum book dialogue call.
//
// More notes: The veve newspaper item is inventory 9. The drum book is inventory 14.
// The flag for veve research is 36, the flag for drum research is 73.
//
// This bug of course also occurs, when using the original interpreter.
//
// Special thanks, credits and kudos to sluicebox on IRC, who did a ton of research on this and even found this game bug originally.
//
// Applies to at least: English PC-CD, German PC-CD
// Responsible method: getTheVeve::changeState(1) - script 212
static const uint16 gk1SignatureDay5DrumBookDialogue[] = {
0x31, 0x0b, // bnt [skip giving player drum book code]
0x38, SIG_UINT16(0x0200), // pushi 0200h
0x78, // push1
SIG_MAGICDWORD,
0x39, 0x0e, // pushi 0Eh
0x81, 0x00, // lag global[0]
0x4a, 0x06, 0x00, // send 06 - GKEgo::get(0Eh)
// end of giving player drum book code
0x38, SIG_UINT16(0x0202), // pushi 0202h
0x78, // push1
0x39, 0x0e, // pushi 0Eh
0x81, 0x00, // lag global[0]
0x4a, 0x06, 0x00, // send 06 - GKEgo::has(0Eh)
0x18, // not
0x30, SIG_UINT16(0x0025), // bnt [veve newspaper code]
SIG_END
};
static const uint16 gk1PatchDay5DrumBookDialogue[] = {
0x31, 0x0d, // bnt [skip giving player drum book code] adjusted
PATCH_ADDTOOFFSET(+11), // skip give player drum book original code
0x33, 0x0D, // jmp [over the check inventory for drum book code]
// check inventory for drum book
0x38, SIG_UINT16(0x0202), // pushi 0202h
0x78, // push1
0x39, 0x0e, // pushi 0Eh
0x81, 0x00, // lag global[0]
0x4a, 0x06, 0x00, // send 06 - GKEgo::has(0Eh)
0x2f, 0x23, // bt [veve newspaper code] (adjusted, saves 2 bytes)
PATCH_END
};
// startOfDay5::changeState (20h) - when gabriel goes to the phone the script will hang
// Applies to at least: English PC-CD, German PC-CD, English Mac
// Responsible method: startOfDay5::changeState
static const uint16 gk1SignatureDay5PhoneFreeze[] = {
0x4a,
SIG_MAGICDWORD, SIG_UINT16(0x000c), // send 0c
0x35, 0x03, // ldi 03
0x65, SIG_ADDTOOFFSET(+1), // aTop cycles
0x32, SIG_ADDTOOFFSET(+2), // jmp [end]
0x3c, // dup
0x35, 0x21, // ldi 21
SIG_END
};
static const uint16 gk1PatchDay5PhoneFreeze[] = {
PATCH_ADDTOOFFSET(+3),
0x35, 0x06, // ldi 01
0x65, PATCH_GETORIGINALBYTEADJUST(+6, +6), // aTop ticks
PATCH_END
};
// Floppy version: Interrogation::dispose() compares an object reference
// (stored in the view selector) with a number, leading to a crash (this kind
// of comparison was not used in SCI32). The view selector is used to store
// both a view number (in some cases), and a view reference (in other cases).
// In the floppy version, the checks are in the wrong order, so there is a
// comparison between a number an an object. In the CD version, the checks are
// in the correct order, thus the comparison is correct, thus we use the code
// from the CD version in the floppy one.
// Applies to at least: English Floppy
// Responsible method: Interrogation::dispose
// TODO: Check, if English Mac is affected too and if this patch applies
static const uint16 gk1SignatureInterrogationBug[] = {
SIG_MAGICDWORD,
0x65, 0x4c, // aTop 4c
0x67, 0x50, // pTos 50
0x34, SIG_UINT16(0x2710), // ldi 2710
0x1e, // gt?
0x31, 0x08, // bnt 08 [05a0]
0x67, 0x50, // pTos 50
0x34, SIG_UINT16(0x2710), // ldi 2710
0x04, // sub
0x65, 0x50, // aTop 50
0x63, 0x50, // pToa 50
0x31, 0x15, // bnt 15 [05b9]
0x39, 0x0e, // pushi 0e
0x76, // push0
0x4a, SIG_UINT16(0x0004), // send 0004
0xa5, 0x00, // sat 00
0x38, SIG_SELECTOR16(dispose), // pushi dispose
0x76, // push0
0x63, 0x50, // pToa 50
0x4a, SIG_UINT16(0x0004), // send 0004
0x85, 0x00, // lat 00
0x65, 0x50, // aTop 50
SIG_END
};
static const uint16 gk1PatchInterrogationBug[] = {
0x65, 0x4c, // aTop 4c
0x63, 0x50, // pToa 50
0x31, 0x15, // bnt 15 [05b9]
0x39, 0x0e, // pushi 0e
0x76, // push0
0x4a, 0x04, 0x00, // send 0004
0xa5, 0x00, // sat 00
0x38, PATCH_SELECTOR16(dispose), // pushi dispose
0x76, // push0
0x63, 0x50, // pToa 50
0x4a, 0x04, 0x00, // send 0004
0x85, 0x00, // lat 00
0x65, 0x50, // aTop 50
0x67, 0x50, // pTos 50
0x34, PATCH_UINT16(0x2710), // ldi 2710
0x1e, // gt?
0x31, 0x08, // bnt 08 [05b9]
0x67, 0x50, // pTos 50
0x34, PATCH_UINT16(0x2710), // ldi 2710
0x04, // sub
0x65, 0x50, // aTop 50
PATCH_END
};
// On day 10 nearly at the end of the game, Gabriel Knight dresses up and right after that
// someone will be at the door. Gabriel turns around to see what's going on.
//
// In ScummVM Gabriel turning around plays endlessly. This is caused by the loop of Gabriel
// being kept at 1, but view + cel were changed accordingly. The view used - which is view 859 -
// does not have a loop 1. kNumCels is called on that, BUT kNumCels in SSCI is broken in that
// regard. It checks for loop > count and not loop >= count and will return basically random data
// in case loop == count.
//
// In SSCI this simply worked by accident. kNumCels returned 0x53 in this case, but later script code
// fixed that up somehow, so it worked out in the end.
//
// The setup for this is done in SDJEnters::changeState(0). The cycler will never reach the goal
// because the goal will be cel -1, so it loops endlessly.
//
// We fix this by adding a setLoop(0).
//
// Applies to at least: English PC-CD, German PC-CD
// Responsible method: sDJEnters::changeState
static const uint16 gk1SignatureDay10GabrielDressUp[] = {
0x87, 0x01, // lap param[1]
0x65, 0x14, // aTop state
0x36, // push
0x3c, // dup
0x35, 0x00, // ldi 0
0x1a, // eq?
0x30, SIG_UINT16(0x006f), // bnt [next state 1]
SIG_ADDTOOFFSET(+84),
0x39, 0x0e, // pushi 0Eh (view)
0x78, // push1
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x035B), // pushi 035Bh (859d)
0x38, SIG_UINT16(0x0141), // pushi 0141h (setCel)
0x78, // push1
0x76, // push0
0x38, SIG_UINT16(0x00E9), // pushi 00E9h (setCycle)
0x7a, // push2
0x51, 0x18, // class End
0x36, // push
0x7c, // pushSelf
0x81, 0x00, // lag global[0]
0x4a, 0x14, 0x00, // send 14h
// GKEgo::view(859)
// GKEgo::setCel(0)
// GKEgo::setCycle(End, sDJEnters)
0x32, SIG_UINT16(0x0233), // jmp [ret]
// next state
0x3c, // dup
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x07, // bnt [next state 2]
0x35, 0x02, // ldi 02
0x65, 0x1a, // aTop cycles
0x32, SIG_UINT16(0x0226), // jmp [ret]
// next state
0x3c, // dup
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, 0x2a, // bnt [next state 3]
0x78, // push1
SIG_ADDTOOFFSET(+34),
// part of state 2 code, delays for 1 cycle
0x35, 0x01, // ldi 1
0x65, 0x1a, // aTop cycles
SIG_END
};
static const uint16 gk1PatchDay10GabrielDressUp[] = {
PATCH_ADDTOOFFSET(+9),
0x30, SIG_UINT16(0x0073), // bnt [next state 1] - offset adjusted
SIG_ADDTOOFFSET(+84 + 11),
// added by us: setting loop to 0 (5 bytes needed)
0x38, SIG_UINT16(0x00FB), // pushi 00FBh (setLoop)
0x78, // push1
0x76, // push0
// original code, but offset changed
0x38, SIG_UINT16(0x00E9), // pushi 00E9h (setCycle)
0x7a, // push2
0x51, 0x18, // class End
0x36, // push
0x7c, // pushSelf
0x81, 0x00, // lag global[0]
0x4a, 0x1a, 0x00, // send 1Ah - adjusted
// GKEgo::view(859)
// GKEgo::setCel(0)
// GKEgo::setLoop(0) <-- new, by us
// GKEgo::setCycle(End, sDJEnters)
// end of original code
0x3a, // toss
0x48, // ret (saves 1 byte)
// state 1 code
0x3c, // dup
0x34, SIG_UINT16(0x0001), // ldi 0001 (waste 1 byte)
0x1a, // eq?
0x31, 2, // bnt [next state 2]
0x33, 41, // jmp to state 2 delay code
SIG_ADDTOOFFSET(+41),
// wait 2 cycles instead of only 1
0x35, 0x02, // ldi 2
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry gk1Signatures[] = {
{ true, 51, "interrogation bug", 1, gk1SignatureInterrogationBug, gk1PatchInterrogationBug },
{ true, 212, "day 5 drum book dialogue error", 1, gk1SignatureDay5DrumBookDialogue, gk1PatchDay5DrumBookDialogue },
{ true, 212, "day 5 phone freeze", 1, gk1SignatureDay5PhoneFreeze, gk1PatchDay5PhoneFreeze },
{ true, 230, "day 6 police beignet timer issue", 1, gk1SignatureDay6PoliceBeignet, gk1PatchDay6PoliceBeignet },
{ true, 230, "day 6 police sleep timer issue", 1, gk1SignatureDay6PoliceSleep, gk1PatchDay6PoliceSleep },
{ true, 808, "day 10 gabriel dress up infinite turning", 1, gk1SignatureDay10GabrielDressUp, gk1PatchDay10GabrielDressUp },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature1, sci2NumSavesPatch1 },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature2, sci2NumSavesPatch2 },
{ true, 64990, "disable change directory button", 1, sci2ChangeDirSignature, sci2ChangeDirPatch },
SCI_SIGNATUREENTRY_TERMINATOR
};
#pragma mark -
#pragma mark Gabriel Knight 2
// The down scroll button in GK2 jumps up a pixel on mousedown because there is
// a send to scrollSelections using an immediate value 1, which means to scroll
// up by 1 pixel. This patch fixes the send to scrollSelections by passing the
// button's delta instead of 1.
//
// Applies to at least: English CD 1.00, English Steam 1.01
// Responsible method: ScrollButton::track
static const uint16 gk2InvScrollSignature[] = {
0x7e, SIG_ADDTOOFFSET(2), // line whatever
SIG_MAGICDWORD,
0x38, SIG_SELECTOR16(scrollSelections), // pushi $2c3
0x78, // push1
0x78, // push1
0x63, 0x98, // pToa $98
0x4a, SIG_UINT16(0x06), // send $6
SIG_END
};
static const uint16 gk2InvScrollPatch[] = {
0x38, PATCH_SELECTOR16(scrollSelections), // pushi $2c3
0x78, // push1
0x67, 0x9a, // pTos $9a (delta)
0x63, 0x98, // pToa $98
0x4a, PATCH_UINT16(0x06), // send $6
0x18, 0x18, // waste bytes
PATCH_END
};
// The init code that runs when GK2 starts up unconditionally resets the
// music volume to 63, but the game should always use the volume stored in
// ScummVM.
// Applies to at least: English 1.00 CD
static const uint16 gk2VolumeResetSignature[] = {
SIG_MAGICDWORD,
0x35, 0x3f, // ldi $3f
0xa1, 0x4c, // sag $4c (music volume)
SIG_END
};
static const uint16 gk2VolumeResetPatch[] = {
0x33, 0x02, // jmp 2 [past volume changes]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry gk2Signatures[] = {
{ true, 0, "disable volume reset on startup", 1, gk2VolumeResetSignature, gk2VolumeResetPatch },
{ true, 23, "inventory starts scroll down in the wrong direction", 1, gk2InvScrollSignature, gk2InvScrollPatch },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature1, sci2NumSavesPatch1 },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature2, sci2NumSavesPatch2 },
{ true, 64990, "disable change directory button", 1, sci2ChangeDirSignature, sci2ChangeDirPatch },
SCI_SIGNATUREENTRY_TERMINATOR
};
#endif
// ===========================================================================
// at least during harpy scene export 29 of script 0 is called in kq5cd and
// has an issue for those calls, where temp 3 won't get inititialized, but
// is later used to set master volume. This issue makes sierra sci set
// the volume to max. We fix the export, so volume won't get modified in
// those cases.
static const uint16 kq5SignatureCdHarpyVolume[] = {
SIG_MAGICDWORD,
0x80, SIG_UINT16(0x0191), // lag global[191h]
0x18, // not
0x30, SIG_UINT16(0x002c), // bnt [jump further] (jumping, if global 191h is 1)
0x35, 0x01, // ldi 01
0xa0, SIG_UINT16(0x0191), // sag global[191h] (setting global 191h to 1)
0x38, SIG_UINT16(0x017b), // pushi 017b
0x76, // push0
0x81, 0x01, // lag global[1]
0x4a, 0x04, // send 04 - read KQ5::masterVolume
0xa5, 0x03, // sat temp[3] (store volume in temp 3)
0x38, SIG_UINT16(0x017b), // pushi 017b
0x76, // push0
0x81, 0x01, // lag global[1]
0x4a, 0x04, // send 04 - read KQ5::masterVolume
0x36, // push
0x35, 0x04, // ldi 04
0x20, // ge? (followed by bnt)
SIG_END
};
static const uint16 kq5PatchCdHarpyVolume[] = {
0x38, PATCH_UINT16(0x022f), // pushi 022f (selector theVol) (3 new bytes)
0x76, // push0 (1 new byte)
0x51, 0x88, // class SpeakTimer (2 new bytes)
0x4a, 0x04, // send 04 (2 new bytes) -> read SpeakTimer::theVol
0xa5, 0x03, // sat temp[3] (2 new bytes) -> write to temp 3
0x80, PATCH_UINT16(0x0191), // lag global[191h]
// saving 1 byte due optimization
0x2e, PATCH_UINT16(0x0023), // bt [jump further] (jumping, if global 191h is 1)
0x35, 0x01, // ldi 01
0xa0, PATCH_UINT16(0x0191), // sag global[191h] (setting global 191h to 1)
0x38, PATCH_UINT16(0x017b), // pushi 017b
0x76, // push0
0x81, 0x01, // lag global[1]
0x4a, 0x04, // send 04 - read KQ5::masterVolume
0xa5, 0x03, // sat temp[3] (store volume in temp 3)
// saving 8 bytes due removing of duplicate code
0x39, 0x04, // pushi 04 (saving 1 byte due swapping)
0x22, // lt? (because we switched values)
PATCH_END
};
// This is a heap patch, and it modifies the properties of an object, instead
// of patching script code.
//
// The witchCage object in script 200 is broken and claims to have 12
// variables instead of the 8 it should have because it is a Cage.
// Additionally its top,left,bottom,right properties are set to 0 rather
// than the right values. We fix the object by setting the right values.
// If they are all zero, this causes an impossible position check in
// witch::cantBeHere and an infinite loop when entering room 22.
//
// This bug is accidentally not triggered in SSCI because the invalid number
// of variables effectively hides witchCage::doit, causing this position check
// to be bypassed entirely.
// See also the warning+comment in Object::initBaseObject
//
// Fixes bug: #4964
static const uint16 kq5SignatureWitchCageInit[] = {
SIG_UINT16(0x0000), // top
SIG_UINT16(0x0000), // left
SIG_UINT16(0x0000), // bottom
SIG_UINT16(0x0000), // right
SIG_UINT16(0x0000), // extra property #1
SIG_MAGICDWORD,
SIG_UINT16(0x007a), // extra property #2
SIG_UINT16(0x00c8), // extra property #3
SIG_UINT16(0x00a3), // extra property #4
SIG_END
};
static const uint16 kq5PatchWitchCageInit[] = {
PATCH_UINT16(0x0000), // top
PATCH_UINT16(0x007a), // left
PATCH_UINT16(0x00c8), // bottom
PATCH_UINT16(0x00a3), // right
PATCH_END
};
// The multilingual releases of KQ5 hang right at the end during the magic battle with Mordack.
// It seems additional code was added to wait for signals, but the signals are never set and thus
// the game hangs. We disable that code, so that the battle works again.
// This also happened in the original interpreter.
// We must not change similar code, that happens before.
// Applies to at least: French PC floppy, German PC floppy, Spanish PC floppy
// Responsible method: stingScript::changeState, dragonScript::changeState, snakeScript::changeState
static const uint16 kq5SignatureMultilingualEndingGlitch[] = {
SIG_MAGICDWORD,
0x89, 0x57, // lsg global[57h]
0x35, 0x00, // ldi 0
0x1a, // eq?
0x18, // not
0x30, SIG_UINT16(0x0011), // bnt [skip signal check]
SIG_ADDTOOFFSET(+8), // skip globalSound::prevSignal get code
0x36, // push
0x35, 0x0a, // ldi 0Ah
SIG_END
};
static const uint16 kq5PatchMultilingualEndingGlitch[] = {
PATCH_ADDTOOFFSET(+6),
0x32, // change BNT into JMP
PATCH_END
};
// In the final battle, the DOS version uses signals in the music to handle
// timing, while in the Windows version another method is used and the GM
// tracks do not contain these signals.
// The original kq5 interpreter used global 400 to distinguish between
// Windows (1) and DOS (0) versions.
// We replace the 4 relevant checks for global 400 by a fixed true when
// we use these GM tracks.
//
// Instead, we could have set global 400, but this has the possibly unwanted
// side effects of switching to black&white cursors (which also needs complex
// changes to GameFeatures::detectsetCursorType() ) and breaking savegame
// compatibilty between the DOS and Windows CD versions of KQ5.
// TODO: Investigate these side effects more closely.
static const uint16 kq5SignatureWinGMSignals[] = {
SIG_MAGICDWORD,
0x80, SIG_UINT16(0x0190), // lag 0x190
0x18, // not
0x30, SIG_UINT16(0x001b), // bnt +0x001B
0x89, 0x57, // lsg 0x57
SIG_END
};
static const uint16 kq5PatchWinGMSignals[] = {
0x34, PATCH_UINT16(0x0001), // ldi 0x0001
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry kq5Signatures[] = {
{ true, 0, "CD: harpy volume change", 1, kq5SignatureCdHarpyVolume, kq5PatchCdHarpyVolume },
{ true, 200, "CD: witch cage init", 1, kq5SignatureWitchCageInit, kq5PatchWitchCageInit },
{ true, 124, "Multilingual: Ending glitching out", 3, kq5SignatureMultilingualEndingGlitch, kq5PatchMultilingualEndingGlitch },
{ false, 124, "Win: GM Music signal checks", 4, kq5SignatureWinGMSignals, kq5PatchWinGMSignals },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// When giving the milk bottle to one of the babies in the garden in KQ6 (room
// 480), script 481 starts a looping baby cry sound. However, that particular
// script also has an overriden check method (cryMusic::check). This method
// explicitly restarts the sound, even if it's set to be looped, thus the same
// sound is played twice, squelching all other sounds. We just rip the
// unnecessary cryMusic::check method out, thereby stopping the sound from
// constantly restarting (since it's being looped anyway), thus the normal
// game speech can work while the baby cry sound is heard.
// Fixes bug: #4955
static const uint16 kq6SignatureDuplicateBabyCry[] = {
SIG_MAGICDWORD,
0x83, 0x00, // lal 00
0x31, 0x1e, // bnt 1e [07f4]
0x78, // push1
0x39, 0x04, // pushi 04
0x43, 0x75, 0x02, // callk DoAudio[75] 02
SIG_END
};
static const uint16 kq6PatchDuplicateBabyCry[] = {
0x48, // ret
PATCH_END
};
// The inventory of King's Quest 6 is buggy. When it grows too large,
// it will get split into 2 pages. Switching between those pages will
// grow the stack, because it's calling itself per switch.
// Which means after a while ScummVM will bomb out because the stack frame
// will be too large. This patch fixes the buggy script.
// Applies to at least: PC-CD, English PC floppy, German PC floppy, English Mac
// Responsible method: KqInv::showSelf
// Fixes bug: #5681
static const uint16 kq6SignatureInventoryStackFix[] = {
0x67, 0x30, // pTos state
0x34, SIG_UINT16(0x2000), // ldi 2000
0x12, // and
0x18, // not
0x31, 0x04, // bnt [not first refresh]
0x35, 0x00, // ldi 00
SIG_MAGICDWORD,
0x65, 0x1e, // aTop curIcon
0x67, 0x30, // pTos state
0x34, SIG_UINT16(0xdfff), // ldi dfff
0x12, // and
0x65, 0x30, // aTop state
0x38, SIG_SELECTOR16(show), // pushi "show" ("show" is e1h for KQ6CD)
0x78, // push1
0x87, 0x00, // lap param[0]
0x31, 0x04, // bnt [use global for show]
0x87, 0x01, // lap param[1]
0x33, 0x02, // jmp [use param for show]
0x81, 0x00, // lag global[0]
0x36, // push
0x54, 0x06, // self 06 (KqInv::show)
0x31, SIG_ADDTOOFFSET(+1), // bnt [exit menu code] (0x08 for PC, 0x07 for mac)
0x39, 0x39, // pushi 39
0x76, // push0
0x54, 0x04, // self 04 (KqInv::doit)
SIG_END // followed by jmp (0x32 for PC, 0x33 for mac)
};
static const uint16 kq6PatchInventoryStackFix[] = {
0x67, 0x30, // pTos state
0x3c, // dup (1 more byte, needed for patch)
0x3c, // dup (1 more byte, saves 1 byte later)
0x34, PATCH_UINT16(0x2000), // ldi 2000
0x12, // and
0x2f, 0x02, // bt [not first refresh] - saves 3 bytes in total
0x65, 0x1e, // aTop curIcon
0x00, // neg (either 2000 or 0000 in acc, this will create dfff or ffff) - saves 2 bytes
0x12, // and
0x65, 0x30, // aTop state
0x38, // pushi "show"
PATCH_GETORIGINALUINT16(+22),
0x78, // push1
0x87, 0x00, // lap param[0]
0x31, 0x04, // bnt [call show using global 0]
0x8f, 0x01, // lsp param[1], save 1 byte total with lsg global[0] combined
0x33, 0x02, // jmp [call show using param 1]
0x89, 0x00, // lsg global[0], save 1 byte total, see above
0x54, 0x06, // self 06 (call x::show)
0x31, // bnt [menu exit code]
PATCH_GETORIGINALBYTEADJUST(+39, +6),// dynamic offset must be 0x0E for PC and 0x0D for mac
0x34, PATCH_UINT16(0x2000), // ldi 2000
0x12, // and
0x2f, 0x05, // bt [to return]
0x39, 0x39, // pushi 39
0x76, // push0
0x54, 0x04, // self 04 (self::doit)
0x48, // ret (saves 2 bytes for PC, 1 byte for mac)
PATCH_END
};
// The "Drink Me" bottle code doesn't repaint the AddToPics elements to the screen,
// when Alexander returns back from the effect of the bottle.
// It's pretty strange that Sierra didn't find this bug, because it occurs when
// drinking the bottle right on the screen, where the bottle is found.
// This bug also occurs in Sierra SCI.
// Applies to at least: PC-CD, English PC floppy, German PC floppy, English Mac
// Responsible method: drinkMeScript::changeState
// Fixes bug: #5252
static const uint16 kq6SignatureDrinkMeFix[] = {
SIG_MAGICDWORD,
0x3c, // dup
0x35, 0x0f, // ldi 0f
0x1a, // eq?
0x30, SIG_UINT16(0x00a4), // bnt [skip to next check]
SIG_ADDTOOFFSET(+161),
0x32, SIG_UINT16(0x007f), // jmp [return]
0x3c, // dup
0x35, 0x10, // ldi 10
0x1a, // eq?
0x31, 0x07, // bnt [skip to next check]
0x35, 0x03, // ldi 03
0x65, 0x1a, // aTop (cycles)
0x32, SIG_UINT16(0x0072), // jmp [return]
0x3c, // dup
0x35, 0x11, // ldi 11
0x1a, // eq?
0x31, 0x13, // bnt [skip to next check]
SIG_ADDTOOFFSET(+20),
0x35, 0x12, // ldi 12
SIG_ADDTOOFFSET(+23),
0x35, 0x13, // ldi 13
SIG_END
};
static const uint16 kq6PatchDrinkMeFix[] = {
PATCH_ADDTOOFFSET(+5), // skip to bnt offset
PATCH_GETORIGINALBYTEADJUST(+5, +13), // adjust jump to [check for 11h code]
PATCH_ADDTOOFFSET(+162),
0x39, PATCH_SELECTOR8(doit), // pushi (doit)
0x76, // push0
0x81, 0x0a, // lag 0a
0x4a, 0x04, // send 04 (call addToPics::doit)
0x3a, // toss
0x48, // ret
PATCH_ADDTOOFFSET(+8), // skip to check 11h code
0x35, 0x10, // ldi 10 instead of 11
PATCH_ADDTOOFFSET(+23), // skip to check 12h code
0x35, 0x11, // ldi 11 instead of 12
PATCH_ADDTOOFFSET(+23), // skip to check 13h code
0x35, 0x12, // ldi 12 instead of 13
PATCH_END
};
// Audio + subtitles support - SHARED! - used for King's Quest 6 and Laura Bow 2
// this patch gets enabled, when the user selects "both" in the ScummVM "Speech + Subtitles" menu
// We currently use global 98d to hold a kMemory pointer.
// Applies to at least: KQ6 PC-CD, LB2 PC-CD
// Patched method: Messager::sayNext / lb2Messager::sayNext (always use text branch)
static const uint16 kq6laurabow2CDSignatureAudioTextSupport1[] = {
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x12, // and
SIG_MAGICDWORD,
0x31, 0x13, // bnt [audio call]
0x38, SIG_SELECTOR16(modNum), // pushi modNum
SIG_END
};
static const uint16 kq6laurabow2CDPatchAudioTextSupport1[] = {
PATCH_ADDTOOFFSET(+5),
0x33, 0x13, // jmp [audio call]
PATCH_END
};
// Applies to at least: KQ6 PC-CD, LB2 PC-CD
// Patched method: Messager::sayNext / lb2Messager::sayNext (allocate audio memory)
static const uint16 kq6laurabow2CDSignatureAudioTextSupport2[] = {
0x7a, // push2
0x78, // push1
0x39, 0x0c, // pushi 0c
0x43, SIG_MAGICDWORD, 0x72, 0x04, // kMemory
0xa5, 0xc9, // sat global[c9]
SIG_END
};
static const uint16 kq6laurabow2CDPatchAudioTextSupport2[] = {
PATCH_ADDTOOFFSET(+7),
0xa1, 98, // sag global[98d]
PATCH_END
};
// Applies to at least: KQ6 PC-CD, LB2 PC-CD
// Patched method: Messager::sayNext / lb2Messager::sayNext (release audio memory)
static const uint16 kq6laurabow2CDSignatureAudioTextSupport3[] = {
0x7a, // push2
0x39, 0x03, // pushi 03
SIG_MAGICDWORD,
0x8d, 0xc9, // lst temp[c9]
0x43, 0x72, 0x04, // kMemory
SIG_END
};
static const uint16 kq6laurabow2CDPatchAudioTextSupport3[] = {
PATCH_ADDTOOFFSET(+3),
0x89, 98, // lsg global[98d]
PATCH_END
};
// startText call gets acc = 0 for text-only and acc = 2 for audio+text
// Applies to at least: KQ6 PC-CD, LB2 PC-CD
// Patched method: Narrator::say (use audio memory)
static const uint16 kq6laurabow2CDSignatureAudioTextSupport4[] = {
// set caller property code
0x31, 0x08, // bnt [set acc to 0 for caller]
0x87, 0x02, // lap param[2]
0x31, 0x04, // bnt [set acc to 0 for caller]
0x87, 0x02, // lap param[2]
0x33, 0x02, // jmp [set caller]
0x35, 0x00, // ldi 00
0x65, 0x68, // aTop caller
// call startText + startAudio code
0x89, 0x5a, // lsg global[5a]
0x35, 0x01, // ldi 01
0x12, // and
0x31, 0x08, // bnt [skip code]
0x38, SIG_SELECTOR16(startText), // pushi startText
0x78, // push1
0x8f, 0x01, // lsp param[1]
0x54, 0x06, // self 06
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x12, // and
0x31, 0x08, // bnt [skip code]
SIG_MAGICDWORD,
0x38, SIG_SELECTOR16(startAudio), // pushi startAudio
0x78, // push1
0x8f, 0x01, // lsp param[1]
0x54, 0x06, // self 06
SIG_END
};
static const uint16 kq6laurabow2CDPatchAudioTextSupport4[] = {
0x31, 0x02, // bnt [set caller]
0x87, 0x02, // lap param[2]
0x65, 0x68, // aTop caller
0x81, 0x5a, // lag global[5a]
0x78, // push1
0x12, // and
0x31, 0x11, // bnt [skip startText code]
0x81, 0x5a, // lag global[5a]
0x7a, // push2
0x12, // and
0x33, 0x03, // skip over 3 unused bytes
PATCH_ADDTOOFFSET(+22),
0x89, 98, // lsp global[98d]
PATCH_END
};
// Applies to at least: KQ6 PC-CD, LB2 PC-CD
// Patched method: Talker::display/Narrator::say (remove reset saved mouse cursor code)
// code would screw over mouse cursor
static const uint16 kq6laurabow2CDSignatureAudioTextSupport5[] = {
SIG_MAGICDWORD,
0x35, 0x00, // ldi 00
0x65, 0x82, // aTop saveCursor
SIG_END
};
static const uint16 kq6laurabow2CDPatchAudioTextSupport5[] = {
0x18, 0x18, 0x18, 0x18, // waste bytes, do nothing
PATCH_END
};
// Additional patch specifically for King's Quest 6
// Fixes text window placement, when in "dual" mode
// Applies to at least: PC-CD
// Patched method: Kq6Talker::init
static const uint16 kq6CDSignatureAudioTextSupport1[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, SIG_ADDTOOFFSET(+1), // bnt [jump-to-text-code]
0x78, // push1
SIG_END
};
static const uint16 kq6CDPatchAudioTextSupport1[] = {
PATCH_ADDTOOFFSET(+4),
0x12, // and
PATCH_END
};
// Additional patch specifically for King's Quest 6
// Fixes low-res portrait staying on screen for hi-res mode
// Applies to at least: PC-CD
// Patched method: Talker::startText
// this method is called by Narrator::say and acc is 0 for text-only and 2 for dual mode (audio+text)
static const uint16 kq6CDSignatureAudioTextSupport2[] = {
SIG_MAGICDWORD,
0x3f, 0x01, // link 01
0x63, 0x8a, // pToa viewInPrint
0x18, // not
0x31, 0x06, // bnt [skip following code]
0x38, SIG_UINT16(0x00e1), // pushi 00e1
0x76, // push0
0x54, 0x04, // self 04
SIG_END
};
static const uint16 kq6CDPatchAudioTextSupport2[] = {
PATCH_ADDTOOFFSET(+2),
0x67, 0x8a, // pTos viewInPrint
0x14, // or
0x2f, // bt [skip following code]
PATCH_END
};
// Additional patch specifically for King's Quest 6
// Fixes special windows, used for example in the Pawn shop (room 280),
// when the man in a robe complains about no more mints.
// Or also in room 300 at the cliffs (aka copy protection), when Alexander falls down the cliffs.
// We have to change even more code, because the game uses PODialog class for
// text windows and myDialog class for audio. Both are saved to KQ6Print::dialog
// Sadly PODialog is created during KQ6Print::addText, myDialog is set during
// KQ6Print::showSelf, which is called much later and KQ6Print::addText requires
// KQ6Print::dialog to be set, which means we have to set it before calling addText
// for audio mode, otherwise the user would have to click to get those windows disposed.
// Applies to at least: PC-CD
// Patched method: KQ6Print::say
static const uint16 kq6CDSignatureAudioTextSupport3[] = {
0x31, 0x6e, // bnt [to text code]
SIG_ADDTOOFFSET(+85),
SIG_MAGICDWORD,
0x8f, 0x01, // lsp param[1]
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x0c, // bnt [code to set property repressText to 1]
0x38, // pushi (selector addText)
SIG_ADDTOOFFSET(+9), // skip addText-calling code
0x33, 0x10, // jmp [to ret]
0x35, 0x01, // ldi 01
0x65, 0x2e, // aTop repressText
0x33, 0x0a, // jmp [to ret]
SIG_END
};
static const uint16 kq6CDPatchAudioTextSupport3[] = {
0x31, 0x68, // adjust jump to reuse audio mode addText-calling code
PATCH_ADDTOOFFSET(+85), // right at the MAGIC_DWORD
// check, if text is supposed to be shown. If yes, skip the follow-up check (param[1])
0x89, 0x5a, // lsg global[5Ah]
0x35, 0x01, // ldi 01
0x12, // and
0x2f, 0x07, // bt [skip over param check]
// original code, checks param[1]
0x8f, 0x01, // lsp param[1]
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x10, // bnt [code to set property repressText to 1], adjusted
// use myDialog class, so that text box automatically disappears (this is not done for text only mode, like in the original)
0x72, 0x0e, 0x00, // lofsa myDialog
0x65, 0x12, // aTop dialog
// followed by original addText-calling code
0x38,
PATCH_GETORIGINALUINT16(+95), // pushi (addText)
0x78, // push1
0x8f, 0x02, // lsp param[2]
0x59, 0x03, // &rest 03
0x54, 0x06, // self 06
0x48, // ret
0x35, 0x01, // ldi 01
0x65, 0x2e, // aTop repressText
0x48, // ret
PATCH_END
};
// Additional patch specifically for King's Quest 6
// Fixes text-window size for hires portraits mode
// Otherwise at least at the end some text-windows will be way too small
// Applies to at least: PC-CD
// Patched method: Talker::init
static const uint16 kq6CDSignatureAudioTextSupport4[] = {
SIG_MAGICDWORD,
0x63, 0x94, // pToa raving
0x31, 0x0a, // bnt [no rave code]
0x35, 0x00, // ldi 00
SIG_ADDTOOFFSET(6), // skip reset of bust, eyes and mouth
0x33, 0x24, // jmp [to super class code]
SIG_END
};
static const uint16 kq6CDPatchAudioTextSupport4[] = {
PATCH_ADDTOOFFSET(+12),
0x33, PATCH_GETORIGINALBYTEADJUST(+13, -6), // adjust jump to also include setSize call
PATCH_END
};
// Fixes text window placement, when dual mode is active (Guards in room 220)
// Applies to at least: PC-CD
// Patched method: tlkGateGuard1::init & tlkGateGuard2::init
static const uint16 kq6CDSignatureAudioTextSupportGuards[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x35, 0x01, // ldi 01
0x1a, // eq?
SIG_END // followed by bnt for Guard1 and bt for Guard2
};
static const uint16 kq6CDPatchAudioTextSupportGuards[] = {
PATCH_ADDTOOFFSET(+2),
0x35, 0x02, // ldi 02
0x1c, // ne?
PATCH_END
};
// Fixes text window placement, when portrait+text is shown (Stepmother in room 250)
// Applies to at least: PC-CD
// Patched method: tlkStepmother::init
static const uint16 kq6CDSignatureAudioTextSupportStepmother[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x12, // and
0x31, // bnt [jump-for-text-code]
SIG_END
};
static const uint16 kq6CDPatchAudioTextSupportJumpAlways[] = {
PATCH_ADDTOOFFSET(+4),
0x1a, // eq?
PATCH_END
};
// Fixes "Girl In The Tower" to get played in dual mode as well
// Also changes credits to use CD audio for dual mode.
//
// Applies to at least: PC-CD
// Patched method: rm740::cue (script 740), sCredits::init (script 52)
static const uint16 kq6CDSignatureAudioTextSupportGirlInTheTower[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, // bnt [jump-for-text-code]
SIG_END
};
static const uint16 kq6CDPatchAudioTextSupportGirlInTheTower[] = {
PATCH_ADDTOOFFSET(+4),
0x12, // and
PATCH_END
};
// Fixes dual mode for scenes with Azure and Ariel (room 370)
// Effectively same patch as the one for fixing "Girl In The Tower"
// Applies to at least: PC-CD
// Patched methods: rm370::init, caughtAtGateCD::changeState, caughtAtGateTXT::changeState, toLabyrinth::changeState
// Fixes bug: #6750
static const uint16 kq6CDSignatureAudioTextSupportAzureAriel[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, // bnt [jump-for-text-code]
SIG_END
};
static const uint16 kq6CDPatchAudioTextSupportAzureAriel[] = {
PATCH_ADDTOOFFSET(+4),
0x12, // and
PATCH_END
};
// Additional patch specifically for King's Quest 6
// Adds another button state for the text/audio button. We currently use the "speech" view for "dual" mode.
// View 947, loop 9, cel 0+1 -> "text"
// View 947, loop 8, cel 0+1 -> "speech"
// View 947, loop 12, cel 0+1 -> "dual" (this view is injected by us into the game)
// Applies to at least: PC-CD
// Patched method: iconTextSwitch::show, iconTextSwitch::doit
static const uint16 kq6CDSignatureAudioTextMenuSupport[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, 0x06, // bnt [set text view]
0x35, 0x08, // ldi 08
0x65, 0x14, // aTop loop
0x33, 0x04, // jmp [skip over text view]
0x35, 0x09, // ldi 09
0x65, 0x14, // aTop loop
SIG_ADDTOOFFSET(+102), // skip to iconTextSwitch::doit code
0x89, 0x5a, // lsg global[5a]
0x3c, // dup
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x06, // bnt [set text mode]
0x35, 0x02, // ldi 02
0xa1, 0x5a, // sag global[5a]
0x33, 0x0a, // jmp [skip over text mode code]
0x3c, // dup
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, 0x04, // bnt [skip over text ode code]
0x35, 0x01, // ldi 01
0xa1, 0x5a, // sag global[5a]
0x3a, // toss
0x67, 0x14, // pTos loop
0x35, 0x09, // ldi 09
0x1a, // eq?
0x31, 0x04, // bnt [set text view]
0x35, 0x08, // ldi 08
0x33, 0x02, // jmp [skip text view]
0x35, 0x09, // ldi 09
0x65, 0x14, // aTop loop
SIG_END
};
static const uint16 kq6CDPatchAudioTextMenuSupport[] = {
PATCH_ADDTOOFFSET(+13),
0x33, 0x79, // jmp to new text+dual code
PATCH_ADDTOOFFSET(+104), // seek to iconTextSwitch::doit
0x81, 0x5a, // lag global[5a]
0x78, // push1
0x02, // add
0xa1, 0x5a, // sag global[5a]
0x36, // push
0x35, 0x03, // ldi 03
0x1e, // gt?
0x31, 0x03, // bnt [skip over]
0x78, // push1
0xa9, 0x5a, // ssg global[5a]
0x33, 0x17, // jmp [iconTextSwitch::show call]
// additional code for iconTextSwitch::show
0x89, 0x5a, // lsg global[5a]
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x04, // bnt [dual mode]
0x35, 0x09, // ldi 09
0x33, 0x02, // jmp [skip over dual mode]
0x35, 0x0c, // ldi 0c (view 947, loop 12, cel 0+1 is our "dual" view, injected by view.cpp)
0x65, 0x14, // aTop loop
0x32, PATCH_UINT16(0xff75), // jmp [back to iconTextSwitch::show]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry kq6Signatures[] = {
{ true, 481, "duplicate baby cry", 1, kq6SignatureDuplicateBabyCry, kq6PatchDuplicateBabyCry },
{ true, 907, "inventory stack fix", 1, kq6SignatureInventoryStackFix, kq6PatchInventoryStackFix },
{ true, 87, "Drink Me bottle fix", 1, kq6SignatureDrinkMeFix, kq6PatchDrinkMeFix },
// King's Quest 6 and Laura Bow 2 share basic patches for audio + text support
// *** King's Quest 6 audio + text support ***
{ false, 924, "CD: audio + text support KQ6&LB2 1", 1, kq6laurabow2CDSignatureAudioTextSupport1, kq6laurabow2CDPatchAudioTextSupport1 },
{ false, 924, "CD: audio + text support KQ6&LB2 2", 1, kq6laurabow2CDSignatureAudioTextSupport2, kq6laurabow2CDPatchAudioTextSupport2 },
{ false, 924, "CD: audio + text support KQ6&LB2 3", 1, kq6laurabow2CDSignatureAudioTextSupport3, kq6laurabow2CDPatchAudioTextSupport3 },
{ false, 928, "CD: audio + text support KQ6&LB2 4", 1, kq6laurabow2CDSignatureAudioTextSupport4, kq6laurabow2CDPatchAudioTextSupport4 },
{ false, 928, "CD: audio + text support KQ6&LB2 5", 2, kq6laurabow2CDSignatureAudioTextSupport5, kq6laurabow2CDPatchAudioTextSupport5 },
{ false, 909, "CD: audio + text support KQ6 1", 2, kq6CDSignatureAudioTextSupport1, kq6CDPatchAudioTextSupport1 },
{ false, 928, "CD: audio + text support KQ6 2", 1, kq6CDSignatureAudioTextSupport2, kq6CDPatchAudioTextSupport2 },
{ false, 104, "CD: audio + text support KQ6 3", 1, kq6CDSignatureAudioTextSupport3, kq6CDPatchAudioTextSupport3 },
{ false, 928, "CD: audio + text support KQ6 4", 1, kq6CDSignatureAudioTextSupport4, kq6CDPatchAudioTextSupport4 },
{ false, 1009, "CD: audio + text support KQ6 Guards", 2, kq6CDSignatureAudioTextSupportGuards, kq6CDPatchAudioTextSupportGuards },
{ false, 1027, "CD: audio + text support KQ6 Stepmother", 1, kq6CDSignatureAudioTextSupportStepmother, kq6CDPatchAudioTextSupportJumpAlways },
{ false, 52, "CD: audio + text support KQ6 Girl In The Tower", 1, kq6CDSignatureAudioTextSupportGirlInTheTower, kq6CDPatchAudioTextSupportGirlInTheTower },
{ false, 740, "CD: audio + text support KQ6 Girl In The Tower", 1, kq6CDSignatureAudioTextSupportGirlInTheTower, kq6CDPatchAudioTextSupportGirlInTheTower },
{ false, 370, "CD: audio + text support KQ6 Azure & Ariel", 6, kq6CDSignatureAudioTextSupportAzureAriel, kq6CDPatchAudioTextSupportAzureAriel },
{ false, 903, "CD: audio + text support KQ6 menu", 1, kq6CDSignatureAudioTextMenuSupport, kq6CDPatchAudioTextMenuSupport },
SCI_SIGNATUREENTRY_TERMINATOR
};
#ifdef ENABLE_SCI32
#pragma mark -
#pragma mark Kings Quest 7
// ===========================================================================
// King's Quest 7 has really weird subtitles. It seems as if the subtitles were
// not fully finished.
//
// Method kqMessager::findTalker in script 0 tries to figure out, which class to use for
// displaying subtitles. It uses the "talker" data of the given message to do that.
// Strangely this "talker" data seems to be quite broken.
// For example chapter 2 starts with a cutscene.
// Troll king: "Welcome, most beautiful of princesses!" - talker 6
// Which is followed by the princess going
// "Hmm?" - which is set to talker 99, normally the princess is talker 7.
//
// Talker 99 is seen as unknown and thus treated as "narrator", which makes
// the scripts put the text at the top of the game screen and even use a
// different font.
//
// In other cases, when the player character thinks to himself talker 99
// is also used. In such situations it may make somewhat sense to do so,
// but putting the text at the top of the screen is also irritating to the player.
// It's really weird.
//
// The scripts also put the regular text in the middle of the screen, blocking
// animations.
//
// And for certain rooms, the subtitle box may use another color
// like for example pink/purple at the start of chapter 5.
//
// We fix all of that (hopefully - lots of testing is required).
// We put the text at the bottom of the play screen.
// We also make the scripts use the regular KQTalker instead of KQNarrator.
// And we also make the subtitle box use color 255, which is fixed white.
//
// Applies to at least: PC CD 1.4 English, 1.51 English, 1.51 German, 2.00 English
// Patched method: KQNarrator::init (script 31)
static const uint16 kq7SignatureSubtitleFix1[] = {
SIG_MAGICDWORD,
0x39, 0x25, // pushi 25h (fore)
0x78, // push1
0x39, 0x06, // pushi 06 - sets back to 6
0x39, 0x26, // pushi 26 (back)
0x78, // push1
0x78, // push1 - sets back to 1
0x39, 0x2a, // pushi 2Ah (font)
0x78, // push1
0x89, 0x16, // lsg global[16h] - sets font to global[16h]
0x7a, // push2 (y)
0x78, // push1
0x76, // push0 - sets y to 0
0x54, SIG_UINT16(0x0018), // self 18h
SIG_END
};
static const uint16 kq7PatchSubtitleFix1[] = {
0x33, 0x12, // jmp [skip special init code]
PATCH_END
};
// Applies to at least: PC CD 1.51 English, 1.51 German, 2.00 English
// Patched method: Narrator::init (script 64928)
static const uint16 kq7SignatureSubtitleFix2[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x12, // and
0x31, 0x1e, // bnt [skip audio volume code]
0x38, SIG_ADDTOOFFSET(+2), // pushi masterVolume (0212h for 2.00, 0219h for 1.51)
0x76, // push0
0x81, 0x01, // lag global[1]
0x4a, 0x04, 0x00, // send 04
0x65, 0x32, // aTop curVolume
0x38, SIG_ADDTOOFFSET(+2), // pushi masterVolume (0212h for 2.00, 0219h for 1.51)
0x78, // push1
0x67, 0x32, // pTos curVolume
0x35, 0x02, // ldi 02
0x06, // mul
0x36, // push
0x35, 0x03, // ldi 03
0x08, // div
0x36, // push
0x81, 0x01, // lag global[1]
0x4a, 0x06, 0x00, // send 06
// end of volume code
0x35, 0x01, // ldi 01
0x65, 0x28, // aTop initialized
SIG_END
};
static const uint16 kq7PatchSubtitleFix2[] = {
PATCH_ADDTOOFFSET(+5), // skip to bnt
0x31, 0x1b, // bnt [skip audio volume code]
PATCH_ADDTOOFFSET(+15), // right after "aTop curVolume / pushi masterVolume / push1"
0x7a, // push2
0x06, // mul (saves 3 bytes in total)
0x36, // push
0x35, 0x03, // ldi 03
0x08, // div
0x36, // push
0x81, 0x01, // lag global[1]
0x4a, 0x06, 0x00, // send 06
// end of volume code
0x35, 118, // ldi 118d
0x65, 0x16, // aTop y
0x78, // push1 (saves 1 byte)
0x69, 0x28, // sTop initialized
PATCH_END
};
// Applies to at least: PC CD 1.51 English, 1.51 German, 2.00 English
// Patched method: Narrator::say (script 64928)
static const uint16 kq7SignatureSubtitleFix3[] = {
SIG_MAGICDWORD,
0x63, 0x28, // pToa initialized
0x18, // not
0x31, 0x07, // bnt [skip init code]
0x38, SIG_ADDTOOFFSET(+2), // pushi init (008Eh for 2.00, 0093h for 1.51)
0x76, // push0
0x54, SIG_UINT16(0x0004), // self 04
// end of init code
0x8f, 0x00, // lsp param[0]
0x35, 0x01, // ldi 01
0x1e, // gt?
0x31, 0x08, // bnt [set acc to 0]
0x87, 0x02, // lap param[2]
0x31, 0x04, // bnt [set acc to 0]
0x87, 0x02, // lap param[2]
0x33, 0x02, // jmp [over set acc to 0 code]
0x35, 0x00, // ldi 00
0x65, 0x18, // aTop caller
SIG_END
};
static const uint16 kq7PatchSubtitleFix3[] = {
PATCH_ADDTOOFFSET(+2), // skip over "pToa initialized code"
0x2f, 0x0c, // bt [skip init code] - saved 1 byte
0x38,
PATCH_GETORIGINALUINT16(+6), // pushi (init)
0x76, // push0
0x54, PATCH_UINT16(0x0004), // self 04
// additionally set background color here (5 bytes)
0x34, PATCH_UINT16(255), // pushi 255d
0x65, 0x2e, // aTop back
// end of init code
0x8f, 0x00, // lsp param[0]
0x35, 0x01, // ldi 01 - this may get optimized to get another byte
0x1e, // gt?
0x31, 0x04, // bnt [set acc to 0]
0x87, 0x02, // lap param[2]
0x2f, 0x02, // bt [over set acc to 0 code]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry kq7Signatures[] = {
{ true, 31, "subtitle fix 1/3", 1, kq7SignatureSubtitleFix1, kq7PatchSubtitleFix1 },
{ true, 64928, "subtitle fix 2/3", 1, kq7SignatureSubtitleFix2, kq7PatchSubtitleFix2 },
{ true, 64928, "subtitle fix 3/3", 1, kq7SignatureSubtitleFix3, kq7PatchSubtitleFix3 },
SCI_SIGNATUREENTRY_TERMINATOR
};
#endif
// ===========================================================================
// Script 210 in the German version of Longbow handles the case where Robin
// hands out the scroll to Marion and then types his name using the hand code.
// The German version script contains a typo (probably a copy/paste error),
// and the function that is used to show each letter is called twice. The
// second time that the function is called, the second parameter passed to
// the function is undefined, thus kStrCat() that is called inside the function
// reads a random pointer and crashes. We patch all of the 5 function calls
// (one for each letter typed from "R", "O", "B", "I", "N") so that they are
// the same as the English version.
// Applies to at least: German floppy
// Responsible method: unknown
// Fixes bug: #5264
static const uint16 longbowSignatureShowHandCode[] = {
0x78, // push1
0x78, // push1
0x72, SIG_ADDTOOFFSET(+2), // lofsa (letter, that was typed)
0x36, // push
0x40, SIG_ADDTOOFFSET(+2), // call
0x02, // perform the call above with 2 parameters
0x36, // push
0x40, SIG_ADDTOOFFSET(+2), // call
SIG_MAGICDWORD,
0x02, // perform the call above with 2 parameters
0x38, SIG_SELECTOR16(setMotion), // pushi "setMotion" (0x11c in Longbow German)
0x39, SIG_SELECTOR8(x), // pushi "x" (0x04 in Longbow German)
0x51, 0x1e, // class MoveTo
SIG_END
};
static const uint16 longbowPatchShowHandCode[] = {
0x39, 0x01, // pushi 1 (combine the two push1's in one, like in the English version)
PATCH_ADDTOOFFSET(+3), // leave the lofsa call untouched
// The following will remove the duplicate call
0x32, PATCH_UINT16(0x0002), // jmp 02 - skip 2 bytes (the remainder of the first call)
0x48, // ret (dummy, should never be reached)
0x48, // ret (dummy, should never be reached)
PATCH_END
};
// When walking through the forest, arithmetic errors may occur at "random".
// The scripts try to add a value and a pointer to the object "berryBush".
//
// This is caused by a local variable overflow.
//
// The scripts create berry bush objects dynamically. The array storage for
// those bushes may hold a total of 8 bushes. But sometimes 10 bushes
// are created. This overwrites 2 additional locals in script 225 and
// those locals are used normally for value lookups.
//
// Changing the total of bushes could cause all sorts of other issues,
// that's why I rather patched the code, that uses the locals for a lookup.
// Which means it doesn't matter anymore when those locals are overwritten.
//
// Applies to at least: English PC floppy, German PC floppy, English Amiga floppy
// Responsible method: export 2 of script 225
// Fixes bug: #6751
static const uint16 longbowSignatureBerryBushFix[] = {
0x89, 0x70, // lsg global[70h]
0x35, 0x03, // ldi 03h
0x1a, // eq?
0x2e, SIG_UINT16(0x002d), // bt [process code]
0x89, 0x70, // lsg global[70h]
0x35, 0x04, // ldi 04h
0x1a, // eq?
0x2e, SIG_UINT16(0x0025), // bt [process code]
0x89, 0x70, // lsg global[70h]
0x35, 0x05, // ldi 05h
0x1a, // eq?
0x2e, SIG_UINT16(0x001d), // bt [process code]
0x89, 0x70, // lsg global[70h]
0x35, 0x06, // ldi 06h
0x1a, // eq?
0x2e, SIG_UINT16(0x0015), // bt [process code]
0x89, 0x70, // lsg global[70h]
0x35, 0x18, // ldi 18h
0x1a, // eq?
0x2e, SIG_UINT16(0x000d), // bt [process code]
0x89, 0x70, // lsg global[70h]
0x35, 0x19, // ldi 19h
0x1a, // eq?
0x2e, SIG_UINT16(0x0005), // bt [process code]
0x89, 0x70, // lsg global[70h]
0x35, 0x1a, // ldi 1Ah
0x1a, // eq?
// jump location for the "bt" instructions
0x30, SIG_UINT16(0x0011), // bnt [skip over follow up code, to offset 0c35]
// 55 bytes until here
0x85, 00, // lat temp[0]
SIG_MAGICDWORD,
0x9a, SIG_UINT16(0x0110), // lsli local[110h] -> 110h points normally to 110h / 2Bh
// 5 bytes
0x7a, // push2
SIG_END
};
static const uint16 longbowPatchBerryBushFix[] = {
PATCH_ADDTOOFFSET(+4), // keep: lsg global[70h], ldi 03h
0x22, // lt? (global < 03h)
0x2f, 0x42, // bt [skip over all the code directly]
0x89, 0x70, // lsg global[70h]
0x35, 0x06, // ldi 06h
0x24, // le? (global <= 06h)
0x2f, 0x0e, // bt [to kRandom code]
0x89, 0x70, // lsg global[70h]
0x35, 0x18, // ldi 18h
0x22, // lt? (global < 18h)
0x2f, 0x34, // bt [skip over all the code directly]
0x89, 0x70, // lsg global[70h]
0x35, 0x1a, // ldi 1Ah
0x24, // le? (global <= 1Ah)
0x31, 0x2d, // bnt [skip over all the code directly]
// 28 bytes, 27 bytes saved
// kRandom code
0x85, 0x00, // lat temp[0]
0x2f, 0x05, // bt [skip over case 0]
// temp[0] == 0
0x38, SIG_UINT16(0x0110), // pushi 0110h - that's what's normally at local[110h]
0x33, 0x18, // jmp [kRandom call]
// check temp[0] further
0x78, // push1
0x1a, // eq?
0x31, 0x05, // bt [skip over case 1]
// temp[0] == 1
0x38, SIG_UINT16(0x002b), // pushi 002Bh - that's what's normally at local[111h]
0x33, 0x0F, // jmp [kRandom call]
// temp[0] >= 2
0x8d, 00, // lst temp[0]
0x35, 0x02, // ldi 02
0x04, // sub
0x9a, SIG_UINT16(0x0112), // lsli local[112h] -> look up value in 2nd table
// this may not be needed at all and was just added for safety reasons
// waste 9 spare bytes
0x35, 0x00, // ldi 00
0x35, 0x00, // ldi 00
0x34, PATCH_UINT16(0x0000), // ldi 0000
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry longbowSignatures[] = {
{ true, 210, "hand code crash", 5, longbowSignatureShowHandCode, longbowPatchShowHandCode },
{ true, 225, "arithmetic berry bush fix", 1, longbowSignatureBerryBushFix, longbowPatchBerryBushFix },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// Leisure Suit Larry 2
// On the plane, Larry is able to wear the parachute. This grants 4 points.
// In early versions of LSL2, it was possible to get "unlimited" points by
// simply wearing it multiple times.
// They fixed it in later versions by remembering, if the parachute was already
// used before.
// But instead of adding it properly, it seems they hacked the script / forgot
// to replace script 0 as well, which holds information about how many global
// variables are allocated at the start of the game.
// The script tries to read an out-of-bounds global variable, which somewhat
// "worked" in SSCI, but ScummVM/SCI doesn't allow that.
// That's why those points weren't granted here at all.
// We patch the script to use global 90, which seems to be unused in the whole game.
// Applies to at least: English floppy
// Responsible method: rm63Script::handleEvent
// Fixes bug: #6346
static const uint16 larry2SignatureWearParachutePoints[] = {
0x35, 0x01, // ldi 01
0xa1, SIG_MAGICDWORD, 0x8e, // sag 8e
0x80, SIG_UINT16(0x01e0), // lag 1e0
0x18, // not
0x30, SIG_UINT16(0x000f), // bnt [don't give points]
0x35, 0x01, // ldi 01
0xa0, 0xe0, 0x01, // sag 1e0
SIG_END
};
static const uint16 larry2PatchWearParachutePoints[] = {
PATCH_ADDTOOFFSET(+4),
0x80, PATCH_UINT16(0x005a), // lag 5a (global 90)
PATCH_ADDTOOFFSET(+6),
0xa0, PATCH_UINT16(0x005a), // sag 5a (global 90)
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry larry2Signatures[] = {
{ true, 63, "plane: no points for wearing plane", 1, larry2SignatureWearParachutePoints, larry2PatchWearParachutePoints },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// Leisure Suit Larry 5
// In Miami the player can call the green card telephone number and get
// green card including limo at the same time in the English 1.000 PC release.
// This results later in a broken game in case the player doesn't read
// the second telephone number for the actual limousine service, because
// in that case it's impossible for the player to get back to the airport.
//
// We disable the code, that is responsible to make the limo arrive.
//
// This bug was fixed in the European (dual language) versions of the game.
//
// Applies to at least: English PC floppy (1.000)
// Responsible method: sPhone::changeState(40)
static const uint16 larry5SignatureGreenCardLimoBug[] = {
0x7a, // push2
SIG_MAGICDWORD,
0x39, 0x07, // pushi 07
0x39, 0x0c, // pushi 0Ch
0x45, 0x0a, 0x04, // call export 10 of script 0
0x78, // push1
0x39, 0x26, // pushi 26h (limo arrived flag)
0x45, 0x07, 0x02, // call export 7 of script 0 (sets flag)
SIG_END
};
static const uint16 larry5PatchGreenCardLimoBug[] = {
PATCH_ADDTOOFFSET(+8),
0x34, PATCH_UINT16(0), // ldi 0000 (dummy)
0x34, PATCH_UINT16(0), // ldi 0000 (dummy)
PATCH_END
};
// In one of the conversations near the end (to be exact - room 380 and the text
// about using champagne on Reverse Biaz - only used when you actually did that
// in the game), the German text is too large, causing the textbox to get too large.
// Because of that the talking head of Patti is drawn over the textbox. A translation oversight.
// Applies to at least: German floppy
// Responsible method: none, position of talker object on screen needs to get modified
static const uint16 larry5SignatureGermanEndingPattiTalker[] = {
SIG_MAGICDWORD,
SIG_UINT16(0x006e), // object pattiTalker::x (110)
SIG_UINT16(0x00b4), // object pattiTalker::y (180)
SIG_ADDTOOFFSET(+469), // verify that it's really the German version
0x59, 0x6f, 0x75, // (object name) "You"
0x23, 0x47, 0x44, 0x75, // "#GDu"
SIG_END
};
static const uint16 larry5PatchGermanEndingPattiTalker[] = {
PATCH_UINT16(0x005a), // change pattiTalker::x to 90
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry larry5Signatures[] = {
{ true, 280, "English-only: fix green card limo bug", 1, larry5SignatureGreenCardLimoBug, larry5PatchGreenCardLimoBug },
{ true, 380, "German-only: Enlarge Patti Textbox", 1, larry5SignatureGermanEndingPattiTalker, larry5PatchGermanEndingPattiTalker },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// this is called on every death dialog. Problem is at least the german
// version of lsl6 gets title text that is far too long for the
// available temp space resulting in temp space corruption
// This patch moves the title text around, so this overflow
// doesn't happen anymore. We would otherwise get a crash
// calling for invalid views (this happens of course also
// in sierra sci)
// Applies to at least: German PC-CD
// Responsible method: unknown
static const uint16 larry6SignatureDeathDialog[] = {
SIG_MAGICDWORD,
0x3e, SIG_UINT16(0x0133), // link 0133 (offset 0x20)
0x35, 0xff, // ldi ff
0xa3, 0x00, // sal 00
SIG_ADDTOOFFSET(+680), // [skip 680 bytes]
0x8f, 0x01, // lsp 01 (offset 0x2cf)
0x7a, // push2
0x5a, SIG_UINT16(0x0004), SIG_UINT16(0x010e), // lea 0004 010e
0x36, // push
0x43, 0x7c, 0x0e, // kMessage[7c] 0e
SIG_ADDTOOFFSET(+90), // [skip 90 bytes]
0x38, SIG_UINT16(0x00d6), // pushi 00d6 (offset 0x335)
0x78, // push1
0x5a, SIG_UINT16(0x0004), SIG_UINT16(0x010e), // lea 0004 010e
0x36, // push
SIG_ADDTOOFFSET(+76), // [skip 76 bytes]
0x38, SIG_UINT16(0x00cd), // pushi 00cd (offset 0x38b)
0x39, 0x03, // pushi 03
0x5a, SIG_UINT16(0x0004), SIG_UINT16(0x010e), // lea 0004 010e
0x36,
SIG_END
};
static const uint16 larry6PatchDeathDialog[] = {
0x3e, 0x00, 0x02, // link 0200
PATCH_ADDTOOFFSET(+687),
0x5a, PATCH_UINT16(0x0004), PATCH_UINT16(0x0140), // lea 0004 0140
PATCH_ADDTOOFFSET(+98),
0x5a, PATCH_UINT16(0x0004), PATCH_UINT16(0x0140), // lea 0004 0140
PATCH_ADDTOOFFSET(+82),
0x5a, PATCH_UINT16(0x0004), PATCH_UINT16(0x0140), // lea 0004 0140
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry larry6Signatures[] = {
{ true, 82, "death dialog memory corruption", 1, larry6SignatureDeathDialog, larry6PatchDeathDialog },
SCI_SIGNATUREENTRY_TERMINATOR
};
#ifdef ENABLE_SCI32
#pragma mark -
#pragma mark Leisure Suit Larry 6 Hires
// When entering room 270 (diving board) from room 230, a typo in the game
// script means that `setScale` is called accidentally instead of `setScaler`.
// In SSCI this did not do much because the first argument happened to be
// smaller than the y-position of `ego`, but in ScummVM the first argument is
// larger and so a debug message "y value less than vanishingY" is displayed.
static const uint16 larry6HiresSignatureSetScale[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x14b), // pushi 014b (setScale)
0x38, SIG_UINT16(0x05), // pushi 0005
0x51, 0x2c, // class 2c (Scaler)
SIG_END
};
static const uint16 larry6HiresPatchSetScale[] = {
0x38, SIG_UINT16(0x14f), // pushi 014f (setScaler)
PATCH_END
};
// The init code that runs when LSL6hires starts up unconditionally resets the
// master music volume to 12 (and the volume dial to 11), but the game should
// always use the volume stored in ScummVM.
// Applies to at least: English CD
static const uint16 larry6HiresSignatureVolumeReset[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x221), // pushi $221 (masterVolume)
0x78, // push1
0x39, 0x0c, // push $0c
0x81, 0x01, // lag $01
0x4a, SIG_UINT16(0x06), // send $6
0x35, 0x0b, // ldi $0b
0xa1, 0xc2, // sag $c2
SIG_END
};
static const uint16 larry6HiresPatchVolumeReset[] = {
0x32, PATCH_UINT16(12), // jmp 12 [past volume changes]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry larry6HiresSignatures[] = {
{ true, 71, "disable volume reset on startup", 1, larry6HiresSignatureVolumeReset, larry6HiresPatchVolumeReset },
{ true, 270, "fix incorrect setScale call", 1, larry6HiresSignatureSetScale, larry6HiresPatchSetScale },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature1, sci2NumSavesPatch1 },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature2, sci2NumSavesPatch2 },
{ true, 64990, "disable change directory button", 1, sci2ChangeDirSignature, sci2ChangeDirPatch },
SCI_SIGNATUREENTRY_TERMINATOR
};
#endif
// ===========================================================================
// Laura Bow 1 - Colonel's Bequest
//
// This is basically just a broken easter egg in Colonel's Bequest.
// A plane can show up in room 4, but that only happens really rarely.
// Anyway the Sierra developer seems to have just entered the wrong loop,
// which is why the statue view is used instead (loop 0).
// We fix it to use the correct loop.
//
// This is only broken in the PC version. It was fixed for Amiga + Atari ST.
//
// Credits to OmerMor, for finding it.
// Applies to at least: English PC Floppy
// Responsible method: room4::init
static const uint16 laurabow1SignatureEasterEggViewFix[] = {
0x78, // push1
0x76, // push0
SIG_MAGICDWORD,
0x38, SIG_SELECTOR16(setLoop), // pushi "setLoop"
0x78, // push1
0x39, 0x03, // pushi 3 (loop 3, view only has 3 loops)
SIG_END
};
static const uint16 laurabow1PatchEasterEggViewFix[] = {
PATCH_ADDTOOFFSET(+7),
0x02, // change loop to 2
PATCH_END
};
// When oiling the armor or opening the visor of the armor, the scripts
// first check if Laura/ego is near the armor and if she is not, they will move her
// to the armor. After that further code is executed.
//
// The current location is checked by a ego::inRect() call.
//
// The given rect for the inRect call inside openVisor::changeState was made larger for Atari ST/Amiga versions.
// We change the PC version to use the same rect.
//
// Additionally the coordinate, that Laura is moved to, is 152, 107 and may not be reachable depending on where
// Laura/ego was, when "use oil on helmet of armor" / "open visor of armor" got entered.
// Bad coordinates are for example 82, 110, which then cause collisions and effectively an endless loop.
// Game will effectively "freeze" and the user is only able to restore a previous game.
// This also happened, when using the original interpreter.
// We change the destination coordinate to 152, 110, which seems to be reachable all the time.
//
// The following patch fixes the rect for the PC version of the game.
//
// Applies to at least: English PC Floppy
// Responsible method: openVisor::changeState (script 37)
// Fixes bug: #7119
static const uint16 laurabow1SignatureArmorOpenVisorFix[] = {
0x39, 0x04, // pushi 04
SIG_MAGICDWORD,
0x39, 0x6a, // pushi 6a (106d)
0x38, SIG_UINT16(0x96), // pushi 0096 (150d)
0x39, 0x6c, // pushi 6c (108d)
0x38, SIG_UINT16(0x98), // pushi 0098 (152d)
SIG_END
};
static const uint16 laurabow1PatchArmorOpenVisorFix[] = {
PATCH_ADDTOOFFSET(+2),
0x39, 0x68, // pushi 68 (104d) (-2)
0x38, SIG_UINT16(0x94), // pushi 0094 (148d) (-2)
0x39, 0x6f, // pushi 6f (111d) (+3)
0x38, SIG_UINT16(0x9a), // pushi 009a (154d) (+2)
PATCH_END
};
// This here fixes the destination coordinate (exact details are above).
//
// Applies to at least: English PC Floppy, English Atari ST Floppy, English Amiga Floppy
// Responsible method: openVisor::changeState, oiling::changeState (script 37)
// Fixes bug: #7119
static const uint16 laurabow1SignatureArmorMoveToFix[] = {
SIG_MAGICDWORD,
0x36, // push
0x39, 0x6b, // pushi 6B (107d)
0x38, SIG_UINT16(0x0098), // pushi 98 (152d)
0x7c, // pushSelf
0x81, 0x00, // lag global[0]
SIG_END
};
static const uint16 laurabow1PatchArmorMoveToFix[] = {
PATCH_ADDTOOFFSET(+1),
0x39, 0x6e, // pushi 6E (110d) - adjust x, so that no collision can occur anymore
PATCH_END
};
// In some cases like for example when the player oils the arm of the armor, command input stays
// disabled, even when the player exits fast enough, so that Laura doesn't die.
//
// This is caused by the scripts only enabling control (directional movement), but do not enable command input as well.
//
// This bug also happens, when using the original interpreter.
// And it was fixed for the Atari ST + Amiga versions of the game.
//
// Applies to at least: English PC Floppy
// Responsible method: 2nd subroutine in script 37, called by oiling::changeState(7)
// Fixes bug: #7154
static const uint16 laurabow1SignatureArmorOilingArmFix[] = {
0x38, SIG_UINT16(0x0089), // pushi 89h
0x76, // push0
SIG_MAGICDWORD,
0x72, SIG_UINT16(0x1a5c), // lofsa "Can" - offsets are not skipped to make sure only the PC version gets patched
0x4a, 0x04, // send 04
0x38, SIG_UINT16(0x0089), // pushi 89h
0x76, // push0
0x72, SIG_UINT16(0x19a1), // lofsa "Visor"
0x4a, 0x04, // send 04
0x38, SIG_UINT16(0x0089), // pushi 89h
0x76, // push0
0x72, SIG_UINT16(0x194a), // lofsa "note"
0x4a, 0x04, // send 04
0x38, SIG_UINT16(0x0089), // pushi 89h
0x76, // push0
0x72, SIG_UINT16(0x18f3), // lofsa "valve"
0x4a, 0x04, // send 04
0x8b, 0x34, // lsl local[34h]
0x35, 0x02, // ldi 02
0x1c, // ne?
0x30, SIG_UINT16(0x0014), // bnt [to ret]
0x8b, 0x34, // lsl local[34h]
0x35, 0x05, // ldi 05
0x1c, // ne?
0x30, SIG_UINT16(0x000c), // bnt [to ret]
0x8b, 0x34, // lsl local[34h]
0x35, 0x06, // ldi 06
0x1c, // ne?
0x30, SIG_UINT16(0x0004), // bnt [to ret]
// followed by code to call script 0 export to re-enable controls and call setMotion
SIG_END
};
static const uint16 laurabow1PatchArmorOilingArmFix[] = {
PATCH_ADDTOOFFSET(+3), // skip over pushi 89h
0x3c, // dup
0x3c, // dup
0x3c, // dup
// saves a total of 6 bytes
0x76, // push0
0x72, SIG_UINT16(0x1a59), // lofsa "Can"
0x4a, 0x04, // send 04
0x76, // push0
0x72, SIG_UINT16(0x19a1), // lofsa "Visor"
0x4a, 0x04, // send 04
0x76, // push0
0x72, SIG_UINT16(0x194d), // lofsa "note"
0x4a, 0x04, // send 04
0x76, // push0
0x72, SIG_UINT16(0x18f9), // lofsa "valve" 18f3
0x4a, 0x04, // send 04
// new code to enable input as well, needs 9 spare bytes
0x38, SIG_UINT16(0x00e2), // canInput
0x78, // push1
0x78, // push1
0x51, 0x2b, // class User
0x4a, 0x06, // send 06 -> call User::canInput(1)
// original code, but changed a bit to save some more bytes
0x8b, 0x34, // lsl local[34h]
0x35, 0x02, // ldi 02
0x04, // sub
0x31, 0x12, // bnt [to ret]
0x36, // push
0x35, 0x03, // ldi 03
0x04, // sub
0x31, 0x0c, // bnt [to ret]
0x78, // push1
0x1a, // eq?
0x2f, 0x08, // bt [to ret]
// saves 7 bytes, we only need 3, so waste 4 bytes
0x35, 0x00, // ldi 0
0x35, 0x00, // ldi 0
PATCH_END
};
// When you tell Lilly about Gertie in room 35, Lilly will then walk to the left and off the screen.
// In case Laura (ego) is in the way, the whole game will basically block and you won't be able
// to do anything except saving + restoring the game.
//
// If this happened already, the player can enter
// "send Lillian ignoreActors 1" inside the debugger to fix this situation.
//
// This issue is very difficult to solve, because Lilly also walks diagonally after walking to the left right
// under the kitchen table. This means that even if we added a few more rectangle checks, there could still be
// spots, where the game would block.
//
// Also the mover "PathOut" is used for Lillian instead of the regular "MoveTo", which would avoid other
// actors by itself.
//
// So instead we set Lilly to ignore other actors during that cutscene, which is the least invasive solution.
//
// Applies to at least: English PC Floppy, English Amiga Floppy, English Atari ST Floppy
// Responsible method: goSee::changeState(1) in script 236
// Fixes bug: (happened during GOG Let's Play)
static const uint16 laurabow1SignatureTellLillyAboutGerieBlockingFix1[] = {
0x7a, // puah2
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x00c1), // pushi 00C1h
0x38, SIG_UINT16(0x008f), // pushi 008Fh
0x38, SIG_SELECTOR16(ignoreActors), // pushi (ignoreActors)
0x78, // push1
0x76, // push0
SIG_END
};
static const uint16 laurabow1PatchTellLillyAboutGertieBlockingFix1[] = {
PATCH_ADDTOOFFSET(+11), // skip over until push0
0x78, // push1 (change push0 to push1)
PATCH_END
};
// a second patch to call Lillian::ignoreActors(1) on goSee::changeState(9) in script 236
static const uint16 laurabow1SignatureTellLillyAboutGerieBlockingFix2[] = {
0x3c, // dup
0x35, 0x09, // ldi 09
0x1a, // eq?
0x30, SIG_UINT16(0x003f), // bnt [ret]
0x39, SIG_ADDTOOFFSET(+1), // pushi (view)
0x78, // push1
0x38, SIG_UINT16(0x0203), // pushi 203h (515d)
0x38, SIG_ADDTOOFFSET(+2), // pushi (posn)
0x7a, // push2
0x38, SIG_UINT16(0x00c9), // pushi C9h (201d)
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x0084), // pushi 84h (132d)
0x72, SIG_ADDTOOFFSET(+2), // lofsa Lillian (different offsets for different platforms)
0x4a, 0x0e, // send 0Eh
SIG_END
};
static const uint16 laurabow1PatchTellLillyAboutGertieBlockingFix2[] = {
0x38, PATCH_SELECTOR16(ignoreActors), // pushi (ignoreActors)
0x78, // push1
0x76, // push0
0x33, 0x00, // ldi 00 (waste 2 bytes)
PATCH_ADDTOOFFSET(+19), // skip over until send
0x4a, 0x14, // send 14h
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry laurabow1Signatures[] = {
{ true, 4, "easter egg view fix", 1, laurabow1SignatureEasterEggViewFix, laurabow1PatchEasterEggViewFix },
{ true, 37, "armor open visor fix", 1, laurabow1SignatureArmorOpenVisorFix, laurabow1PatchArmorOpenVisorFix },
{ true, 37, "armor move to fix", 2, laurabow1SignatureArmorMoveToFix, laurabow1PatchArmorMoveToFix },
{ true, 37, "allowing input, after oiling arm", 1, laurabow1SignatureArmorOilingArmFix, laurabow1PatchArmorOilingArmFix },
{ true, 236, "tell Lilly about Gertie blocking fix 1/2", 1, laurabow1SignatureTellLillyAboutGerieBlockingFix1, laurabow1PatchTellLillyAboutGertieBlockingFix1 },
{ true, 236, "tell Lilly about Gertie blocking fix 2/2", 1, laurabow1SignatureTellLillyAboutGerieBlockingFix2, laurabow1PatchTellLillyAboutGertieBlockingFix2 },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// Laura Bow 2
//
// Moving away the painting in the room with the hidden safe is problematic
// for the CD version of the game. safePic::doVerb gets triggered by the mouse-click.
// This method sets local 0 as signal, which is only meant to get handled, when
// the player clicks again to move the painting back. This signal is processed by
// the room doit-script.
// That doit-script checks safePic::cel to be not equal 0 and would then skip over
// the "close painting" trigger code. On very fast computers this script may
// get called too early (which is the case when running under ScummVM and when
// running the game using Sierra SCI in DOS-Box with cycles 15000) and thinks
// that it's supposed to move the painting back. Which then results in the painting
// getting moved to its original position immediately (which means it won't be possible
// to access the safe behind it).
//
// We patch the script, so that we check for cel to be not equal 4 (the final cel) and
// we also reset the safePic-signal immediately as well.
//
// In the floppy version Laura's coordinates are checked directly in rm560::doit
// and as soon as she moves, the painting will automatically move to its original position.
// This is not the case for the CD version of the game. The painting will only "move" back,
// when the player actually exits the room and re-enters.
//
// Applies to at least: English PC-CD
// Responsible method: rm560::doit
// Fixes bug: #6460
static const uint16 laurabow2CDSignaturePaintingClosing[] = {
0x39, 0x04, // pushi 04 (cel)
0x76, // push0
SIG_MAGICDWORD,
0x7a, // push2
0x38, SIG_UINT16(0x0231), // pushi 0231h (561)
0x76, // push0
0x43, 0x02, 0x04, // kScriptID (get export 0 of script 561)
0x4a, 0x04, // send 04 (gets safePicture::cel)
0x18, // not
0x31, 0x21, // bnt [exit]
0x38, SIG_UINT16(0x0283), // pushi 0283h
0x76, // push0
0x7a, // push2
0x39, 0x20, // pushi 20
0x76, // push0
0x43, 0x02, 0x04, // kScriptID (get export 0 of script 32)
0x4a, 0x04, // send 04 (get sHeimlich::room)
0x36, // push
0x81, 0x0b, // lag global[b] (current room)
0x1c, // ne?
0x31, 0x0e, // bnt [exit]
0x35, 0x00, // ldi 00
0xa3, 0x00, // sal local[0] -> reset safePic signal
SIG_END
};
static const uint16 laurabow2CDPatchPaintingClosing[] = {
PATCH_ADDTOOFFSET(+2),
0x3c, // dup (1 additional byte)
0x76, // push0
0x3c, // dup (1 additional byte)
0xab, 0x00, // ssl local[0] -> reset safePic signal
0x7a, // push2
0x38, PATCH_UINT16(0x0231), // pushi 0231h (561)
0x76, // push0
0x43, 0x02, 0x04, // kScriptID (get export 0 of script 561)
0x4a, 0x04, // send 04 (gets safePicture::cel)
0x1a, // eq?
0x31, 0x1d, // bnt [exit]
0x38, PATCH_UINT16(0x0283), // pushi 0283h
0x76, // push0
0x7a, // push2
0x39, 0x20, // pushi 20
0x76, // push0
0x43, 0x02, 0x04, // kScriptID (get export 0 of script 32)
0x4a, 0x04, // send 04 (get sHeimlich::room)
0x36, // push
0x81, 0x0b, // lag global[b] (current room)
0x1a, // eq? (2 opcodes changed, to save 2 bytes)
0x2f, 0x0a, // bt [exit]
PATCH_END
};
// In the CD version the system menu is disabled for certain rooms. LB2::handsOff is called,
// when leaving the room (and in other cases as well). This method remembers the disabled
// icons of the icon bar. In the new room LB2::handsOn will get called, which then enables
// all icons, but also disabled the ones, that were disabled before.
//
// Because of this behaviour certain rooms, that should have the system menu enabled, have
// it disabled, when entering those rooms from rooms, where the menu is supposed to be
// disabled.
//
// We patch this by injecting code into LB2::newRoom (which is called right after a room change)
// and reset the global variable there, that normally holds the disabled buttons.
//
// This patch may cause side-effects and it's difficult to test, because it affects every room
// in the game. At least for the intro, the speakeasy and plenty of rooms in the beginning it
// seems to work correctly.
//
// Applies to at least: English PC-CD
// Responsible method: LB2::newRoom, LB2::handsOff, LB2::handsOn
// Fixes bug: #6440
static const uint16 laurabow2CDSignatureFixProblematicIconBar[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x00f1), // pushi 00f1 (disable) - hardcoded, we only want to patch the CD version
0x76, // push0
0x81, 0x45, // lag global[45]
0x4a, 0x04, // send 04
SIG_END
};
static const uint16 laurabow2CDPatchFixProblematicIconBar[] = {
0x35, 0x00, // ldi 00
0xa1, 0x74, // sag 74h
0x35, 0x00, // ldi 00 (waste bytes)
0x35, 0x00, // ldi 00
PATCH_END
};
// When entering the main musem party room (w/ the golden Egyptian head),
// Laura is waslking a bit into the room automatically.
// In case you press a mouse button while this is happening, you will get
// stuck inside that room and won't be able to exit it anymore.
//
// Users, who played the game w/ a previous version of ScummVM can simply
// enter the debugger and then enter "send rm350 script 0:0", which will
// fix the script state.
//
// This is caused by the user controls not being locked at that point.
// Pressing a button will cause the cue from the PolyPath walker to never
// happen, which then causes sEnterSouth to never dispose itself.
//
// User controls are locked in the previous room 335, but controls
// are unlocked by frontDoor::cue.
// We do not want to change this, because it could have side-effects.
// We instead add another LB2::handsOff call inside the script responsible
// for making Laura walk into the room (sEnterSouth::changeState(0).
//
// Applies to at least: English PC-CD, English PC-Floppy, German PC-Floppy
// Responsible method: sEnterSouth::changeState
// Fixes bug: (no bug report, from GOG forum post)
static const uint16 laurabow2SignatureMuseumPartyFixEnteringSouth1[] = {
0x3c, // dup
0x35, 0x00, // ldi 00
0x1a, // eq?
0x30, SIG_UINT16(0x0097), // bnt [state 1 code]
SIG_ADDTOOFFSET(+141), // skip to end of follow-up code
0x32, SIG_ADDTOOFFSET(+2), // jmp [ret] (0x008d for CD, 0x007d for floppy)
0x35, 0x01, // ldi 01
0x65, 0x1a, // aTop cycles
0x32, SIG_ADDTOOFFSET(+2), // jmp [ret] (0x0086 for CD, 0x0076 for floppy)
// state 1 code
0x3c, // dup
0x35, 0x01, // ldi 01
0x1a, // eq?
SIG_MAGICDWORD,
0x31, 0x05, // bnt [state 2 code]
0x35, 0x00, // ldi 00
0x32, SIG_ADDTOOFFSET(+2), // jmp [ret] (0x007b for CD, 0x006b for floppy)
// state 2 code
0x3c, // dup
SIG_END
};
static const uint16 laurabow2PatchMuseumPartyFixEnteringSouth1[] = {
0x2e, PATCH_UINT16(0x00a6), // bt [state 2 code] (we skip state 1, because it's a NOP anyways)
// state 0 processing
0x32, PATCH_UINT16(+151),
SIG_ADDTOOFFSET(+149), // skip to end of follow-up code
// save 1 byte by replacing jump to [ret] into straight toss/ret
0x3a, // toss
0x48, // ret
// additional code, that gets called right at the start of step 0 processing
0x18, // not -- this here is where pushi handsOff will be inserted by the second patch
0x18, // not offset and handsOff is different for floppy + CD, that's why we do this
0x18, // not floppy also does not have a selector table, so we can't go by "handsOff" name
0x18, // not
0x76, // push0
0x81, 0x01, // lag global[1]
0x4a, 0x04, // send 04
0x32, PATCH_UINT16(0xFF5e), // jmp [back to start of step 0 processing]
PATCH_END
};
// second patch, which only inserts pushi handsOff inside our new code
// There is no other way to do this except making 2 full patches for floppy + CD, because handsOff/handsOn
// is not the same value between floppy + CD *and* floppy doesn't even have a vocab, so we can't figure out the id
// by ourselves.
static const uint16 laurabow2SignatureMuseumPartyFixEnteringSouth2[] = {
0x18, // our injected code
0x18,
0x18,
SIG_ADDTOOFFSET(+92), // skip to the handsOn code, that we are interested in
0x38, SIG_ADDTOOFFSET(+2), // pushi handsOn (0x0189 for CD, 0x024b for floppy)
0x76, // push0
0x81, 0x01, // lag global[1]
0x4a, 0x04, // send 04
0x38, SIG_ADDTOOFFSET(+2), // pushi 0274h
SIG_MAGICDWORD,
0x78, // push1
0x38, SIG_UINT16(0x033f), // pushi 033f
SIG_END
};
static const uint16 laurabow2PatchMuseumPartyFixEnteringSouth2[] = {
0x38, // pushi
PATCH_GETORIGINALUINT16ADJUST(+96, -1), // get handsOff code and ubstract 1 from it to get handsOn
PATCH_END
};
// Opening/Closing the east door in the pterodactyl room doesn't
// check, if it's locked and will open/close the door internally
// even when it is.
//
// It will get wired shut later in the game by Laura Bow and will be
// "locked" because of this. We patch in a check for the locked
// state. We also add code, that will set the "locked" state
// in case our eastDoor-wired-global is set. This makes the locked
// state effectively persistent.
//
// Applies to at least: English PC-CD, English PC-Floppy
// Responsible method (CD): eastDoor::doVerb
// Responsible method (Floppy): eastDoor::<noname300>
// Fixes bug: #6458 (partly, see additional patch below)
static const uint16 laurabow2SignatureFixWiredEastDoor[] = {
0x30, SIG_UINT16(0x0022), // bnt [skip hand action]
0x67, SIG_ADDTOOFFSET(+1), // pTos CD: doorState, Floppy: state
0x35, 0x00, // ldi 00
0x1a, // eq?
0x31, 0x08, // bnt [close door code]
0x78, // push1
SIG_MAGICDWORD,
0x39, 0x63, // pushi 63h
0x45, 0x04, 0x02, // callb export000_4, 02 (sets door-bitflag)
0x33, 0x06, // jmp [super-code]
0x78, // push1
0x39, 0x63, // pushi 63h
0x45, 0x03, 0x02, // callb export000_3, 02 (resets door-bitflag)
0x38, SIG_ADDTOOFFSET(+2), // pushi CD: 011dh, Floppy: 012ch
0x78, // push1
0x8f, 0x01, // lsp param[01]
0x59, 0x02, // rest 02
0x57, SIG_ADDTOOFFSET(+1), 0x06, // super CD: LbDoor, Floppy: Door, 06
0x33, 0x0b, // jmp [ret]
SIG_END
};
static const uint16 laurabow2PatchFixWiredEastDoor[] = {
0x31, 0x23, // bnt [skip hand action] (saves 1 byte)
0x81, 97, // lag 97d (get our eastDoor-wired-global)
0x31, 0x04, // bnt [skip setting locked property]
0x35, 0x01, // ldi 01
0x65, 0x6a, // aTop locked (set eastDoor::locked to 1)
0x63, 0x6a, // pToa locked (get eastDoor::locked)
0x2f, 0x17, // bt [skip hand action]
0x63, PATCH_GETORIGINALBYTE(+4), // pToa CD: doorState, Floppy: state
0x78, // push1
0x39, 0x63, // pushi 63h
0x2f, 0x05, // bt [close door code]
0x45, 0x04, 0x02, // callb export000_4, 02 (sets door-bitflag)
0x33, 0x0b, // jmp [super-code]
0x45, 0x03, 0x02, // callb export000_3, 02 (resets door-bitflag)
0x33, 0x06, // jmp [super-code]
PATCH_END
};
// We patch in code, so that our eastDoor-wired-global will get set to 1.
// This way the wired-state won't get lost when exiting room 430.
//
// Applies to at least: English PC-CD, English PC-Floppy
// Responsible method (CD): sWireItShut::changeState
// Responsible method (Floppy): sWireItShut::<noname144>
// Fixes bug: #6458 (partly, see additional patch above)
static const uint16 laurabow2SignatureRememberWiredEastDoor[] = {
SIG_MAGICDWORD,
0x33, 0x27, // jmp [ret]
0x3c, // dup
0x35, 0x06, // ldi 06
0x1a, // eq?
0x31, 0x21, // bnt [skip step]
SIG_END
};
static const uint16 laurabow2PatchRememberWiredEastDoor[] = {
PATCH_ADDTOOFFSET(+2), // skip jmp [ret]
0x34, PATCH_UINT16(0x0001), // ldi 0001
0xa1, PATCH_UINT16(97), // sag 97d (set our eastDoor-wired-global)
PATCH_END
};
// Laura Bow 2 CD resets the audio mode to speech on init/restart
// We already sync the settings from ScummVM (see SciEngine::syncIngameAudioOptions())
// and this script code would make it impossible to see the intro using "dual" mode w/o using debugger command
// That's why we remove the corresponding code
// Patched method: LB2::init, rm100::init
static const uint16 laurabow2CDSignatureAudioTextSupportModeReset[] = {
SIG_MAGICDWORD,
0x35, 0x02, // ldi 02
0xa1, 0x5a, // sag global[5a]
SIG_END
};
static const uint16 laurabow2CDPatchAudioTextSupportModeReset[] = {
0x34, PATCH_UINT16(0x0001), // ldi 0001 (waste bytes)
0x18, // not (waste bytes)
PATCH_END
};
// Directly use global 5a for view-cel id
// That way it's possible to use a new "dual" mode view in the game menu
// View 995, loop 13, cel 0 -> "text"
// View 995, loop 13, cel 1 -> "speech"
// View 995, loop 13, cel 2 -> "dual" (this view is injected by us into the game)
// Patched method: gcWin::open
static const uint16 laurabow2CDSignatureAudioTextMenuSupport1[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x35, 0x02, // ldi 02
0x1a, // eq?
0x36, // push
SIG_END
};
static const uint16 laurabow2CDPatchAudioTextMenuSupport1[] = {
PATCH_ADDTOOFFSET(+2),
0x35, 0x01, // ldi 01
0x04, // sub
PATCH_END
};
// Adds another button state for the text/audio button. We currently use the "speech" view for "dual" mode.
// Patched method: iconMode::doit
static const uint16 laurabow2CDSignatureAudioTextMenuSupport2[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg global[5a]
0x3c, // dup
0x1a, // eq?
0x31, 0x0a, // bnt [set text mode]
0x35, 0x02, // ldi 02
0xa1, 0x5a, // sag global[5a]
0x35, 0x01, // ldi 01
0xa5, 0x00, // sat temp[0]
0x33, 0x0e, // jmp [draw cel code]
0x3c, // dup
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, 0x08, // bnt [draw cel code]
0x35, 0x01, // ldi 01
0xa1, 0x5a, // sag global[5a]
0x35, 0x00, // ldi 00
0xa5, 0x00, // sat temp[0]
0x3a, // toss
SIG_END
};
static const uint16 laurabow2CDPatchAudioTextMenuSupport2[] = {
0x81, 0x5a, // lag global[5a]
0x78, // push1
0x02, // add
0xa1, 0x5a, // sag global[5a]
0x36, // push
0x35, 0x03, // ldi 03
0x1e, // gt?
0x31, 0x03, // bnt [skip over]
0x78, // push1
0xa9, 0x5a, // ssg global[5a]
0x89, 0x5a, // lsg global[5a]
0x35, 0x01, // ldi 01
0x04, // sub
0xa5, 0x00, // sat temp[0] - calculate global[5a] - 1 to use as view cel id
0x33, 0x07, // jmp [draw cel code, don't do toss]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry laurabow2Signatures[] = {
{ true, 560, "CD: painting closing immediately", 1, laurabow2CDSignaturePaintingClosing, laurabow2CDPatchPaintingClosing },
{ true, 0, "CD: fix problematic icon bar", 1, laurabow2CDSignatureFixProblematicIconBar, laurabow2CDPatchFixProblematicIconBar },
{ true, 350, "CD/Floppy: museum party fix entering south 1/2", 1, laurabow2SignatureMuseumPartyFixEnteringSouth1, laurabow2PatchMuseumPartyFixEnteringSouth1 },
{ true, 350, "CD/Floppy: museum party fix entering south 2/2", 1, laurabow2SignatureMuseumPartyFixEnteringSouth2, laurabow2PatchMuseumPartyFixEnteringSouth2 },
{ true, 430, "CD/Floppy: make wired east door persistent", 1, laurabow2SignatureRememberWiredEastDoor, laurabow2PatchRememberWiredEastDoor },
{ true, 430, "CD/Floppy: fix wired east door", 1, laurabow2SignatureFixWiredEastDoor, laurabow2PatchFixWiredEastDoor },
// King's Quest 6 and Laura Bow 2 share basic patches for audio + text support
{ false, 924, "CD: audio + text support 1", 1, kq6laurabow2CDSignatureAudioTextSupport1, kq6laurabow2CDPatchAudioTextSupport1 },
{ false, 924, "CD: audio + text support 2", 1, kq6laurabow2CDSignatureAudioTextSupport2, kq6laurabow2CDPatchAudioTextSupport2 },
{ false, 924, "CD: audio + text support 3", 1, kq6laurabow2CDSignatureAudioTextSupport3, kq6laurabow2CDPatchAudioTextSupport3 },
{ false, 928, "CD: audio + text support 4", 1, kq6laurabow2CDSignatureAudioTextSupport4, kq6laurabow2CDPatchAudioTextSupport4 },
{ false, 928, "CD: audio + text support 5", 2, kq6laurabow2CDSignatureAudioTextSupport5, kq6laurabow2CDPatchAudioTextSupport5 },
{ false, 0, "CD: audio + text support disable mode reset", 1, laurabow2CDSignatureAudioTextSupportModeReset, laurabow2CDPatchAudioTextSupportModeReset },
{ false, 100, "CD: audio + text support disable mode reset", 1, laurabow2CDSignatureAudioTextSupportModeReset, laurabow2CDPatchAudioTextSupportModeReset },
{ false, 24, "CD: audio + text support LB2 menu 1", 1, laurabow2CDSignatureAudioTextMenuSupport1, laurabow2CDPatchAudioTextMenuSupport1 },
{ false, 24, "CD: audio + text support LB2 menu 2", 1, laurabow2CDSignatureAudioTextMenuSupport2, laurabow2CDPatchAudioTextMenuSupport2 },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// Mother Goose SCI1/SCI1.1
// MG::replay somewhat calculates the savedgame-id used when saving again
// this doesn't work right and we remove the code completely.
// We set the savedgame-id directly right after restoring in kRestoreGame.
// We also draw the background picture in here instead.
// This Mixed Up Mother Goose draws the background picture before restoring,
// instead of doing it properly in MG::replay. This fixes graphic issues,
// when restoring from GMM.
//
// Applies to at least: English SCI1 CD, English SCI1.1 floppy, Japanese FM-Towns
// Responsible method: MG::replay (script 0)
static const uint16 mothergoose256SignatureReplay[] = {
0x7a, // push2
0x78, // push1
0x5b, 0x00, 0xbe, // lea global[BEh]
0x36, // push
0x43, 0x70, 0x04, // callk MemorySegment
0x7a, // push2
0x5b, 0x00, 0xbe, // lea global[BEh]
0x36, // push
0x76, // push0
0x43, 0x62, 0x04, // callk StrAt
0xa1, 0xaa, // sag global[AAh]
0x7a, // push2
0x5b, 0x00, 0xbe, // lea global[BEh]
0x36, // push
0x78, // push1
0x43, 0x62, 0x04, // callk StrAt
0x36, // push
0x35, 0x20, // ldi 20
0x04, // sub
0xa1, SIG_ADDTOOFFSET(+1), // sag global[57h] -> FM-Towns [9Dh]
// 35 bytes
0x39, 0x03, // pushi 03
0x89, SIG_ADDTOOFFSET(+1), // lsg global[1Dh] -> FM-Towns [1Eh]
0x76, // push0
0x7a, // push2
0x5b, 0x00, 0xbe, // lea global[BEh]
0x36, // push
0x7a, // push2
0x43, 0x62, 0x04, // callk StrAt
0x36, // push
0x35, 0x01, // ldi 01
0x04, // sub
0x36, // push
0x43, 0x62, 0x06, // callk StrAt
// 22 bytes
0x7a, // push2
0x5b, 0x00, 0xbe, // lea global[BE]
0x36, // push
0x39, 0x03, // pushi 03
0x43, 0x62, 0x04, // callk StrAt
// 10 bytes
0x36, // push
0x35, SIG_MAGICDWORD, 0x20, // ldi 20
0x04, // sub
0xa1, 0xb3, // sag global[b3]
// 6 bytes
SIG_END
};
static const uint16 mothergoose256PatchReplay[] = {
0x39, 0x06, // pushi 06
0x76, // push0
0x76, // push0
0x38, PATCH_UINT16(200), // pushi 200d
0x38, PATCH_UINT16(320), // pushi 320d
0x76, // push0
0x76, // push0
0x43, 0x15, 0x0c, // callk SetPort -> set picture port to full screen
// 15 bytes
0x39, 0x04, // pushi 04
0x3c, // dup
0x76, // push0
0x38, PATCH_UINT16(255), // pushi 255d
0x76, // push0
0x43, 0x6f, 0x08, // callk Palette -> set intensity to 0 for all colors
// 11 bytes
0x7a, // push2
0x38, PATCH_UINT16(800), // pushi 800
0x76, // push0
0x43, 0x08, 0x04, // callk DrawPic -> draw picture 800
// 8 bytes
0x39, 0x06, // pushi 06
0x39, 0x0c, // pushi 0Ch
0x76, // push0
0x76, // push0
0x38, PATCH_UINT16(200), // push 200
0x38, PATCH_UINT16(320), // push 320
0x78, // push1
0x43, 0x6c, 0x0c, // callk Graph -> send everything to screen
// 16 bytes
0x39, 0x06, // pushi 06
0x76, // push0
0x76, // push0
0x38, PATCH_UINT16(156), // pushi 156d
0x38, PATCH_UINT16(258), // pushi 258d
0x39, 0x03, // pushi 03
0x39, 0x04, // pushi 04
0x43, 0x15, 0x0c, // callk SetPort -> set picture port back
// 17 bytes
0x34, PATCH_UINT16(0x0000), // ldi 0000 (dummy)
0x34, PATCH_UINT16(0x0000), // ldi 0000 (dummy)
PATCH_END
};
// when saving, it also checks if the savegame ID is below 13.
// we change this to check if below 113 instead
//
// Applies to at least: English SCI1 CD, English SCI1.1 floppy, Japanese FM-Towns
// Responsible method: Game::save (script 994 for SCI1), MG::save (script 0 for SCI1.1)
static const uint16 mothergoose256SignatureSaveLimit[] = {
0x89, SIG_MAGICDWORD, 0xb3, // lsg global[b3]
0x35, 0x0d, // ldi 0d
0x20, // ge?
SIG_END
};
static const uint16 mothergoose256PatchSaveLimit[] = {
PATCH_ADDTOOFFSET(+2),
0x35, 0x0d + SAVEGAMEID_OFFICIALRANGE_START, // ldi 113d
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry mothergoose256Signatures[] = {
{ true, 0, "replay save issue", 1, mothergoose256SignatureReplay, mothergoose256PatchReplay },
{ true, 0, "save limit dialog (SCI1.1)", 1, mothergoose256SignatureSaveLimit, mothergoose256PatchSaveLimit },
{ true, 994, "save limit dialog (SCI1)", 1, mothergoose256SignatureSaveLimit, mothergoose256PatchSaveLimit },
SCI_SIGNATUREENTRY_TERMINATOR
};
#ifdef ENABLE_SCI32
#pragma mark -
#pragma mark Mixed-up Mother Goose Deluxe
// The game uses pic 10005 to render the Sierra logo, but then it also
// initialises a logo object with view 502 on the same priority as the pic. In
// the original interpreter, it is dumb luck which is drawn first (based on the
// order of the memory IDs), though usually the pic is drawn first because not
// many objects have been created at the start of the game. In ScummVM, the
// renderer guarantees a sort order based on the creation order of screen items,
// and since the view is created after the pic, it wins and is drawn on top.
// This patch stops the view object from being created at all.
//
// Applies to at least: English CD from King's Quest Collection
// Responsible method: sShowLogo::changeState
static const uint16 mothergooseHiresSignatureLogo[] = {
0x38, SIG_UINT16(0x8e), // pushi $8e
SIG_MAGICDWORD,
0x76, // push0
0x72, SIG_UINT16(0x82), // lofsa logo[82]
0x4a, SIG_UINT16(0x04), // send $4
SIG_END
};
static const uint16 mothergooseHiresPatchLogo[] = {
0x18, 0x18, 0x18, // waste bytes
0x18, // waste bytes
0x18, 0x18, 0x18, // waste bytes
0x18, 0x18, 0x18, // waste bytes
PATCH_END
};
// After finishing the rhyme at the fountain, a horse will appear and walk
// across the screen. The priority of the horse is set too high, so it is
// rendered in front of the fountain instead of behind the fountain. This patch
// corrects the priority so the horse draws behind the fountain.
//
// Applies to at least: English CD from King's Quest Collection
// Responsible method: rhymeScript::changeState
static const uint16 mothergooseHiresSignatureHorse[] = {
SIG_MAGICDWORD,
0x39, 0x4a, // pushi $4a (setPri)
0x78, // push1
0x38, SIG_UINT16(0xb7), // pushi $b7
SIG_END
};
static const uint16 mothergooseHiresPatchHorse[] = {
PATCH_ADDTOOFFSET(3),
0x38, PATCH_UINT16(0x59),
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry mothergooseHiresSignatures[] = {
{ true, 108, "bad logo rendering", 1, mothergooseHiresSignatureLogo, mothergooseHiresPatchLogo },
{ true, 318, "bad horse z-index", 1, mothergooseHiresSignatureHorse, mothergooseHiresPatchHorse },
SCI_SIGNATUREENTRY_TERMINATOR
};
#pragma mark -
#pragma mark Phantasmagoria
// Phantasmagoria persists audio volumes in the save games, but ScummVM manages
// game volumes through the launcher, so stop the game from overwriting the
// ScummVM volumes with volumes from save games.
// Applies to at least: English CD
static const uint16 phant1SignatureSavedVolume[] = {
0x7a, // push2
0x39, 0x08, // pushi 8
0x38, SIG_UINT16(0x20b), // push $20b (readWord)
0x76, // push0
0x72, SIG_UINT16(0x13c), // lofsa $13c (PREF.DAT)
0x4a, SIG_UINT16(0x04), // send 4
SIG_MAGICDWORD,
0xa1, 0xbc, // sag $bc
0x36, // push
0x43, 0x76, SIG_UINT16(0x04), // callk DoAudio[76], 4
0x7a, // push2
0x76, // push0
0x38, SIG_UINT16(0x20b), // push $20b (readWord)
0x76, // push0
0x72, SIG_UINT16(0x13c), // lofsa $13c (PREF.DAT)
0x4a, SIG_UINT16(0x04), // send 4
0xa1, 0xbb, // sag $bb
0x36, // push
0x43, 0x75, SIG_UINT16(0x04), // callk DoSound[75], 4
SIG_END
};
static const uint16 phant1PatchSavedVolume[] = {
0x32, PATCH_UINT16(36), // jmp [to prefFile::close]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry phantasmagoriaSignatures[] = {
{ true, 901, "invalid array construction", 1, sci21IntArraySignature, sci21IntArrayPatch },
{ true, 1111, "ignore audio settings from save game", 1, phant1SignatureSavedVolume, phant1PatchSavedVolume },
SCI_SIGNATUREENTRY_TERMINATOR
};
#endif
// ===========================================================================
// Police Quest 1 VGA
// When briefing is about to start in room 15, other officers will get into the room too.
// When one of those officers gets into the way of ego, they will tell the player to sit down.
// But control will be disabled right at that point. Ego may then go to his seat by himself,
// or more often than not will just stand there. The player is unable to do anything.
//
// Sergeant Dooley will then enter the room. Tell the player to sit down 3 times and after
// that it's game over.
//
// Because the Sergeant is telling the player to sit down, one has to assume that the player
// is meant to still be in control. Which is why this script patch removes disabling of player control.
//
// The script also tries to make ego walk to the chair, but it fails because it gets stuck with other
// actors. So I guess the safest way is to remove all of that and let the player do it manually.
//
// The responsible method seems to use a few hardcoded texts, which is why I have to assume that it's
// not used anywhere else. I also checked all scripts and couldn't find any other calls to it.
//
// This of course also happens when using the original interpreter.
//
// Scripts work like this: manX::doit (script 134) triggers gab::changeState, which then triggers rm015::notify
//
// Applies to at least: English floppy
// Responsible method: gab::changeState (script 152)
// Fixes bug: #5865
static const uint16 pq1vgaSignatureBriefingGettingStuck[] = {
0x76, // push0
0x45, 0x02, 0x00, // call export 2 of script 0 (disable control)
0x38, SIG_ADDTOOFFSET(+2), // pushi notify
0x76, // push0
0x81, 0x02, // lag global[2] (get current room)
0x4a, 0x04, // send 04
SIG_MAGICDWORD,
0x8b, 0x02, // lsl local[2]
0x35, 0x01, // ldi 01
0x02, // add
SIG_END
};
static const uint16 pq1vgaPatchBriefingGettingStuck[] = {
0x33, 0x0a, // jmp to lsl local[2], skip over export 2 and ::notify
PATCH_END // rm015::notify would try to make ego walk to the chair
};
// When at the police station, you can put or get your gun from your locker.
// The script, that handles this, is buggy. It disposes the gun as soon as
// you click, but then waits 2 seconds before it also closes the locker.
// Problem is that it's possible to click again, which then results in a
// disposed object getting accessed. This happened to work by pure luck in
// SSCI.
// This patch changes the code, so that the gun is actually given away
// when the 2 seconds have passed and the locker got closed.
// Applies to at least: English floppy
// Responsible method: putGun::changeState (script 341)
// Fixes bug: #5705 / #6400
static const uint16 pq1vgaSignaturePutGunInLockerBug[] = {
0x35, 0x00, // ldi 00
0x1a, // eq?
0x31, 0x25, // bnt [next state check]
SIG_ADDTOOFFSET(+22), // [skip 22 bytes]
SIG_MAGICDWORD,
0x38, SIG_SELECTOR16(put), // pushi "put"
0x78, // push1
0x76, // push0
0x81, 0x00, // lag 00
0x4a, 0x06, // send 06 - ego::put(0)
0x35, 0x02, // ldi 02
0x65, 0x1c, // aTop 1c (set timer to 2 seconds)
0x33, 0x0e, // jmp [end of method]
0x3c, // dup --- next state check target
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x08, // bnt [end of method]
0x39, SIG_SELECTOR8(dispose), // pushi "dispose"
0x76, // push0
0x72, SIG_UINT16(0x0088), // lofsa 0088
0x4a, 0x04, // send 04 - locker::dispose
SIG_END
};
static const uint16 pq1vgaPatchPutGunInLockerBug[] = {
PATCH_ADDTOOFFSET(+3),
0x31, 0x1c, // bnt [next state check]
PATCH_ADDTOOFFSET(+22),
0x35, 0x02, // ldi 02
0x65, 0x1c, // aTop 1c (set timer to 2 seconds)
0x33, 0x17, // jmp [end of method]
0x3c, // dup --- next state check target
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x11, // bnt [end of method]
0x38, PATCH_SELECTOR16(put), // pushi "put"
0x78, // push1
0x76, // push0
0x81, 0x00, // lag 00
0x4a, 0x06, // send 06 - ego::put(0)
PATCH_END
};
// When restoring a saved game, which was made while driving around,
// the game didn't redraw the map. This also happened in Sierra SCI.
//
// The map is a picture resource and drawn over the main picture.
// This is called an "overlay" in SCI. This wasn't implemented properly.
// We fix it by actually implementing it properly.
//
// Applies to at least: English floppy
// Responsible method: rm500::init, changeOverlay::changeState (script 500)
// Fixes bug: #5016
static const uint16 pq1vgaSignatureMapSaveRestoreBug[] = {
0x39, 0x04, // pushi 04
SIG_ADDTOOFFSET(+2), // skip either lsg global[f9] or pTos register
SIG_MAGICDWORD,
0x38, 0x64, 0x80, // pushi 8064
0x76, // push0
0x89, 0x28, // lsg global[28]
0x43, 0x08, 0x08, // kDrawPic (8)
SIG_END
};
static const uint16 pq1vgaPatchMapSaveRestoreBug[] = {
0x38, PATCH_SELECTOR16(overlay), // pushi "overlay"
0x7a, // push2
0x89, 0xf9, // lsg global[f9]
0x39, 0x64, // pushi 64 (no transition)
0x81, 0x02, // lag global[02] (current room object)
0x4a, 0x08, // send 08
0x18, // not (waste byte)
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry pq1vgaSignatures[] = {
{ true, 152, "getting stuck while briefing is about to start", 1, pq1vgaSignatureBriefingGettingStuck, pq1vgaPatchBriefingGettingStuck },
{ true, 341, "put gun in locker bug", 1, pq1vgaSignaturePutGunInLockerBug, pq1vgaPatchPutGunInLockerBug },
{ true, 500, "map save/restore bug", 2, pq1vgaSignatureMapSaveRestoreBug, pq1vgaPatchMapSaveRestoreBug },
SCI_SIGNATUREENTRY_TERMINATOR
};
#ifdef ENABLE_SCI32
#pragma mark -
#pragma mark Police Quest 4
// script, description, signature patch
static const SciScriptPatcherEntry pq4Signatures[] = {
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature1, sci2NumSavesPatch1 },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature2, sci2NumSavesPatch2 },
{ true, 64990, "disable change directory button", 1, sci2ChangeDirSignature, sci2ChangeDirPatch },
SCI_SIGNATUREENTRY_TERMINATOR
};
#pragma mark -
#pragma mark Police Quest: SWAT
// The init code that runs when PQ:SWAT starts up unconditionally resets the
// master sound volume to 127, but the game should always use the volume stored
// in ScummVM.
// Applies to at least: English CD
static const uint16 pqSwatSignatureVolumeReset1[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x21a), // pushi $21a (masterVolume)
0x78, // push1
0x39, 0x7f, // push $7f
0x54, SIG_UINT16(0x06), // self 6
SIG_END
};
static const uint16 pqSwatPatchVolumeReset1[] = {
0x32, PATCH_UINT16(6), // jmp 6 [past volume reset]
PATCH_END
};
// pqInitCode::doit
static const uint16 pqSwatSignatureVolumeReset2[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x21a), // pushi $21a (masterVolume)
0x78, // push1
0x39, 0x0f, // pushi $f
0x81, 0x01, // lag 1
0x4a, SIG_UINT16(0x06), // send 6
SIG_END
};
static const uint16 pqSwatPatchVolumeReset2[] = {
0x32, PATCH_UINT16(8), // jmp 8 [past volume reset]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry pqSwatSignatures[] = {
{ true, 0, "disable volume reset on startup", 1, pqSwatSignatureVolumeReset1, pqSwatPatchVolumeReset1 },
{ true, 1, "disable volume reset on startup", 1, pqSwatSignatureVolumeReset2, pqSwatPatchVolumeReset2 },
SCI_SIGNATUREENTRY_TERMINATOR
};
#endif
// ===========================================================================
// At the healer's house there is a bird's nest up on the tree.
// The player can throw rocks at it until it falls to the ground.
// The hero will then grab the item, that is in the nest.
//
// When running is active, the hero will not reach the actual destination
// and because of that, the game will get stuck.
//
// We just change the coordinate of the destination slightly, so that walking,
// sneaking and running work.
//
// This bug was fixed by Sierra at least in the Japanese PC-9801 version.
// Applies to at least: English floppy (1.000, 1.012)
// Responsible method: pickItUp::changeState (script 54)
// Fixes bug: #6407
static const uint16 qfg1egaSignatureThrowRockAtNest[] = {
0x4a, 0x04, // send 04 (nest::x)
0x36, // push
SIG_MAGICDWORD,
0x35, 0x0f, // ldi 0f (15d)
0x02, // add
0x36, // push
SIG_END
};
static const uint16 qfg1egaPatchThrowRockAtNest[] = {
PATCH_ADDTOOFFSET(+3),
0x35, 0x12, // ldi 12 (18d)
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry qfg1egaSignatures[] = {
{ true, 54, "throw rock at nest while running", 1, qfg1egaSignatureThrowRockAtNest, qfg1egaPatchThrowRockAtNest },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// script 215 of qfg1vga pointBox::doit actually processes button-presses
// during fighting with monsters. It strangely also calls kGetEvent. Because
// the main User::doit also calls kGetEvent it's pure luck, where the event
// will hit. It's the same issue as in freddy pharkas and if you turn dos-box
// to max cycles, sometimes clicks also won't get registered. Strangely it's
// not nearly as bad as in our sci, but these differences may be caused by
// timing.
// We just reuse the active event, thus removing the duplicate kGetEvent call.
// Applies to at least: English floppy
// Responsible method: pointBox::doit
static const uint16 qfg1vgaSignatureFightEvents[] = {
0x39, SIG_MAGICDWORD,
SIG_SELECTOR8(new), // pushi "new"
0x76, // push0
0x51, 0x07, // class Event
0x4a, 0x04, // send 04 - call Event::new
0xa5, 0x00, // sat temp[0]
0x78, // push1
0x76, // push0
0x4a, 0x04, // send 04 - read Event::x
0xa5, 0x03, // sat temp[3]
0x76, // push0 (selector y)
0x76, // push0
0x85, 0x00, // lat temp[0]
0x4a, 0x04, // send 04 - read Event::y
0x36, // push
0x35, 0x0a, // ldi 0a
0x04, // sub (poor mans localization) ;-)
SIG_END
};
static const uint16 qfg1vgaPatchFightEvents[] = {
0x38, PATCH_SELECTOR16(curEvent), // pushi 15a (selector curEvent)
0x76, // push0
0x81, 0x50, // lag global[50]
0x4a, 0x04, // send 04 - read User::curEvent -> needs one byte more than previous code
0xa5, 0x00, // sat temp[0]
0x78, // push1
0x76, // push0
0x4a, 0x04, // send 04 - read Event::x
0xa5, 0x03, // sat temp[3]
0x76, // push0 (selector y)
0x76, // push0
0x85, 0x00, // lat temp[0]
0x4a, 0x04, // send 04 - read Event::y
0x39, 0x00, // pushi 00
0x02, // add (waste 3 bytes) - we don't need localization, User::doit has already done it
PATCH_END
};
// Script 814 of QFG1VGA is responsible for showing dialogs. However, the death
// screen message shown when the hero dies in room 64 (ghost room) is too large
// (254 chars long). Since the window header and main text are both stored in
// temp space, this is an issue, as the scripts read the window header, then the
// window text, which erases the window header text because of its length. To
// fix that, we allocate more temp space and move the pointer used for the
// window header a little bit, wherever it's used in script 814.
// Fixes bug: #6139.
// Patch 1: Increase temp space
static const uint16 qfg1vgaSignatureTempSpace[] = {
SIG_MAGICDWORD,
0x3f, 0xba, // link 0xba
0x87, 0x00, // lap 0
SIG_END
};
static const uint16 qfg1vgaPatchTempSpace[] = {
0x3f, 0xca, // link 0xca
PATCH_END
};
// Patch 2: Move the pointer used for the window header a little bit
static const uint16 qfg1vgaSignatureDialogHeader[] = {
SIG_MAGICDWORD,
0x5b, 0x04, 0x80, // lea temp[0x80]
0x36, // push
SIG_END
};
static const uint16 qfg1vgaPatchDialogHeader[] = {
0x5b, 0x04, 0x90, // lea temp[0x90]
PATCH_END
};
// When clicking on the crusher in room 331, Ego approaches him to talk to him,
// an action that is handled by moveToCrusher::changeState in script 331. The
// scripts set Ego to move close to the crusher, but when Ego is sneaking instead
// of walking, the target coordinates specified by script 331 are never reached,
// as Ego is making larger steps, and never reaches the required spot. This is an
// edge case that can occur when Ego is set to sneak. Normally, when clicking on
// the crusher, ego is supposed to move close to position 79, 165. We change it
// to 85, 165, which is not an edge case thus the freeze is avoided.
// Fixes bug: #6180
static const uint16 qfg1vgaSignatureMoveToCrusher[] = {
SIG_MAGICDWORD,
0x51, 0x1f, // class Motion
0x36, // push
0x39, 0x4f, // pushi 4f (79 - x)
0x38, SIG_UINT16(0x00a5), // pushi 00a5 (165 - y)
0x7c, // pushSelf
SIG_END
};
static const uint16 qfg1vgaPatchMoveToCrusher[] = {
PATCH_ADDTOOFFSET(+3),
0x39, 0x55, // pushi 55 (85 - x)
PATCH_END
};
// Same pathfinding bug as above, where Ego is set to move to an impossible
// spot when sneaking. In GuardsTrumpet::changeState, we change the final
// location where Ego is moved from 111, 111 to 116, 116.
// target coordinate is really problematic here.
//
// 114, 114 works when the speed slider is all the way up, but doesn't work
// when the speed slider is not.
//
// It seems that this bug was fixed by Sierra for the Macintosh version.
//
// Applies to at least: English PC floppy
// Responsible method: GuardsTrumpet::changeState(8)
// Fixes bug: #6248
static const uint16 qfg1vgaSignatureMoveToCastleGate[] = {
0x51, SIG_ADDTOOFFSET(+1), // class MoveTo
SIG_MAGICDWORD,
0x36, // push
0x39, 0x6f, // pushi 6f (111d)
0x3c, // dup (111d) - coordinates 111, 111
0x7c, // pushSelf
SIG_END
};
static const uint16 qfg1vgaPatchMoveToCastleGate[] = {
PATCH_ADDTOOFFSET(+3),
0x39, 0x74, // pushi 74 (116d), changes coordinates to 116, 116
PATCH_END
};
// Typo in the original Sierra scripts
// Looking at a cheetaur resulted in a text about a Saurus Rex
// The code treats both monster types the same.
// Applies to at least: English floppy
// Responsible method: smallMonster::doVerb
// Fixes bug #6249
static const uint16 qfg1vgaSignatureCheetaurDescription[] = {
SIG_MAGICDWORD,
0x34, SIG_UINT16(0x01b8), // ldi 01b8
0x1a, // eq?
0x31, 0x16, // bnt 16
0x38, SIG_SELECTOR16(say), // pushi 0127h (selector "say")
0x39, 0x06, // pushi 06
0x39, 0x03, // pushi 03
0x78, // push1
0x39, 0x12, // pushi 12 -> monster type Saurus Rex
SIG_END
};
static const uint16 qfg1vgaPatchCheetaurDescription[] = {
PATCH_ADDTOOFFSET(+14),
0x39, 0x11, // pushi 11 -> monster type cheetaur
PATCH_END
};
// In the "funny" room (Yorick's room) in QfG1 VGA, pulling the chain and
// then pressing the button on the right side of the room results in
// a broken game. This also happens in SSCI.
// Problem is that the Sierra programmers forgot to disable the door, that
// gets opened by pulling the chain. So when ego falls down and then
// rolls through the door, one method thinks that the player walks through
// it and acts that way and the other method is still doing the roll animation.
// Local 5 of that room is a timer, that closes the door (object door11).
// Setting it to 1 during happyFace::changeState(0) stops door11::doit from
// calling goTo6::init, so the whole issue is stopped from happening.
//
// Applies to at least: English floppy
// Responsible method: happyFace::changeState, door11::doit
// Fixes bug #6181
static const uint16 qfg1vgaSignatureFunnyRoomFix[] = {
0x65, 0x14, // aTop 14 (state)
0x36, // push
0x3c, // dup
0x35, 0x00, // ldi 00
0x1a, // eq?
0x30, SIG_UINT16(0x0025), // bnt 0025 [-> next state]
SIG_MAGICDWORD,
0x35, 0x01, // ldi 01
0xa3, 0x4e, // sal 4e
SIG_END
};
static const uint16 qfg1vgaPatchFunnyRoomFix[] = {
PATCH_ADDTOOFFSET(+3),
0x2e, PATCH_UINT16(0x0029), // bt 0029 [-> next state] - saves 4 bytes
0x35, 0x01, // ldi 01
0xa3, 0x4e, // sal 4e
0xa3, 0x05, // sal 05 (sets local 5 to 1)
0xa3, 0x05, // and again to make absolutely sure (actually to waste 2 bytes)
PATCH_END
};
// The player is able to buy (and also steal) potions in the healer's hut
// Strangely Sierra delays the actual buy/get potion code for 60 ticks
// Why they did that is unknown. The code is triggered anyway only after
// the relevant dialog boxes are closed.
//
// This delay causes problems in case the user quickly enters the inventory.
// That's why we change the amount of ticks to 1, so that the remaining states
// are executed right after the dialog boxes are closed.
//
// Applies to at least: English floppy
// Responsible method: cueItScript::changeState
// Fixes bug #6706
static const uint16 qfg1vgaSignatureHealerHutNoDelay[] = {
0x65, 0x14, // aTop 14 (state)
0x36, // push
0x3c, // dup
0x35, 0x00, // ldi 00
0x1a, // eq?
0x31, 0x07, // bnt 07 [-> next state]
SIG_MAGICDWORD,
0x35, 0x3c, // ldi 3c (60 ticks)
0x65, 0x20, // aTop ticks
0x32, // jmp [-> end of method]
SIG_END
};
static const uint16 qfg1vgaPatchHealerHutNoDelay[] = {
PATCH_ADDTOOFFSET(+9),
0x35, 0x01, // ldi 01 (1 tick only, so that execution will resume as soon as dialog box is closed)
PATCH_END
};
// When following the white stag, you can actually enter the 2nd room from the mushroom/fairy location,
// which results in ego entering from the top. When you then throw a dagger at the stag, one animation
// frame will stay on screen, because of a script bug.
//
// Applies to at least: English floppy, Mac floppy
// Responsible method: stagHurt::changeState
// Fixes bug #6135
static const uint16 qfg1vgaSignatureWhiteStagDagger[] = {
0x87, 0x01, // lap param[1]
0x65, 0x14, // aTop state
0x36, // push
0x3c, // dup
0x35, 0x00, // ldi 0
0x1a, // eq?
0x31, 0x16, // bnt [next parameter check]
0x76, // push0
0x45, 0x02, 0x00, // callb export 2 from script 0, 0
SIG_MAGICDWORD,
0x38, SIG_SELECTOR16(say), // pushi 0127h (selector "say")
0x39, 0x05, // pushi 05
0x39, 0x03, // pushi 03
0x39, 0x51, // pushi 51h
0x76, // push0
0x76, // push0
0x7c, // pushSelf
0x81, 0x5b, // lag global[5Bh] -> qg1Messager
0x4a, 0x0e, // send 0Eh -> qg1Messager::say(3, 51h, 0, 0, stagHurt)
0x33, 0x12, // jmp -> [ret]
0x3c, // dup
0x35, 0x01, // ldi 1
0x1a, // eq?
0x31, 0x0c, // bnt [ret]
0x38, // pushi...
SIG_ADDTOOFFSET(+11),
0x3a, // toss
0x48, // ret
SIG_END
};
static const uint16 qfg1vgaPatchWhiteStagDagger[] = {
PATCH_ADDTOOFFSET(+4),
0x2f, 0x05, // bt [next check] (state != 0)
// state = 0 code
0x35, 0x01, // ldi 1
0x65, 0x1a, // aTop cycles
0x48, // ret
0x36, // push
0x35, 0x01, // ldi 1
0x1a, // eq?
0x31, 0x16, // bnt [state = 2 code]
// state = 1 code
0x76, // push0
0x45, 0x02, 0x00, // callb export 2 from script 0, 0
0x38, PATCH_SELECTOR16(say), // pushi 0127h (selector "say")
0x39, 0x05, // pushi 05
0x39, 0x03, // pushi 03
0x39, 0x51, // pushi 51h
0x76, // push0
0x76, // push0
0x7c, // pushSelf
0x81, 0x5b, // lag global[5Bh] -> qg1Messager
0x4a, 0x0e, // send 0Eh -> qg1Messager::say(3, 51h, 0, 0, stagHurt)
0x48, // ret
// state = 2 code
PATCH_ADDTOOFFSET(+13),
0x48, // ret (remove toss)
PATCH_END
};
// The dagger range has a script bug that can freeze the game or cause Brutus to kill you even after you've killed him.
// This is a bug in the original game.
//
// When Bruno leaves, a 300 tick countdown starts. If you kill Brutus or leave room 73 within those 300 ticks then
// the game is left in a broken state. For the rest of the game, if you ever return to the dagger range from the
// east or west during the first half of the day then the game will freeze or Brutus will come back to life
// and kill you, even if you already killed him.
//
// Special thanks, credits and kudos to sluicebox, who did a ton of research on this and even found this game bug originally.
//
// Applies to at least: English floppy, Mac floppy
// Responsible method: brutusWaits::changeState
// Fixes bug #9558
static const uint16 qfg1vgaSignatureBrutusScriptFreeze[] = {
0x78, // push1
0x38, SIG_UINT16(0x144), // pushi 144h (324d)
0x45, 0x05, 0x02, // call export 5 of script 0
SIG_MAGICDWORD,
0x34, SIG_UINT16(0x12c), // ldi 12Ch (300d)
0x65, 0x20, // aTop ticks
SIG_END
};
static const uint16 qfg1vgaPatchBrutusScriptFreeze[] = {
0x34, PATCH_UINT16(0), // ldi 0 (waste 7 bytes)
0x35, 0x00, // ldi 0
0x35, 0x00, // ldi 0
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry qfg1vgaSignatures[] = {
{ true, 41, "moving to castle gate", 1, qfg1vgaSignatureMoveToCastleGate, qfg1vgaPatchMoveToCastleGate },
{ true, 55, "healer's hut, no delay for buy/steal", 1, qfg1vgaSignatureHealerHutNoDelay, qfg1vgaPatchHealerHutNoDelay },
{ true, 73, "brutus script freeze glitch", 1, qfg1vgaSignatureBrutusScriptFreeze, qfg1vgaPatchBrutusScriptFreeze },
{ true, 77, "white stag dagger throw animation glitch", 1, qfg1vgaSignatureWhiteStagDagger, qfg1vgaPatchWhiteStagDagger },
{ true, 96, "funny room script bug fixed", 1, qfg1vgaSignatureFunnyRoomFix, qfg1vgaPatchFunnyRoomFix },
{ true, 210, "cheetaur description fixed", 1, qfg1vgaSignatureCheetaurDescription, qfg1vgaPatchCheetaurDescription },
{ true, 215, "fight event issue", 1, qfg1vgaSignatureFightEvents, qfg1vgaPatchFightEvents },
{ true, 216, "weapon master event issue", 1, qfg1vgaSignatureFightEvents, qfg1vgaPatchFightEvents },
{ true, 331, "moving to crusher", 1, qfg1vgaSignatureMoveToCrusher, qfg1vgaPatchMoveToCrusher },
{ true, 814, "window text temp space", 1, qfg1vgaSignatureTempSpace, qfg1vgaPatchTempSpace },
{ true, 814, "dialog header offset", 3, qfg1vgaSignatureDialogHeader, qfg1vgaPatchDialogHeader },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// This is a very complicated bug.
// When the player encounters an enemy in the desert while riding a saurus and later
// tries to get back on it by entering "ride", the game will not give control back
// to the player.
//
// This is caused by script mountSaurus getting triggered twice.
// Once by entering the command "ride" and then a second time by a proximity check.
//
// Both are calling mountSaurus::init() in script 20, this one disables controls
// then mountSaurus::changeState() from script 660 is triggered
// mountSaurus::changeState(5) finally calls mountSaurus::dispose(), which is also in script 20
// which finally re-enables controls
//
// A fix is difficult to implement. The code in script 20 is generic and used by multiple objects
//
// Originally I decided to change the responsible globals (66h and A1h) during mountSaurus::changeState(5).
// This worked as far as for controls, but mountSaurus::init changes a few selectors of ego as well, which
// won't get restored in that situation, which then messes up room changes and other things.
//
// I have now decided to change sheepScript::changeState(2) in script 665 instead.
//
// This fix could cause issues in case there is a cutscene, where ego is supposed to get onto the saurus using
// sheepScript.
//
// Applies to at least: English PC Floppy, English Amiga Floppy
// Responsible method: mountSaurus::changeState(), mountSaurus::init(), mountSaurus::dispose()
// Fixes bug: #5156
static const uint16 qfg2SignatureSaurusFreeze[] = {
0x3c, // dup
0x35, 0x02, // ldi 5
SIG_MAGICDWORD,
0x1a, // eq?
0x30, SIG_UINT16(0x0043), // bnt [ret]
0x76, // push0
SIG_ADDTOOFFSET(+61), // skip to dispose code
0x39, SIG_SELECTOR8(dispose), // pushi "dispose"
0x76, // push0
0x54, 0x04, // self 04
SIG_END
};
static const uint16 qfg2PatchSaurusFreeze[] = {
0x81, 0x66, // lag 66h
0x2e, SIG_UINT16(0x0040), // bt [to dispose code]
0x35, 0x00, // ldi 0 (waste 2 bytes)
PATCH_END
};
// Script 944 in QFG2 contains the FileSelector system class, used in the
// character import screen. This gets incorrectly called constantly, whenever
// the user clicks on a button in order to refresh the file list. This was
// probably done because it would be easier to refresh the list whenever the
// user inserted a new floppy disk, or changed directory. The problem is that
// the script has a bug, and it invalidates the text of the entries in the
// list. This has a high probability of breaking, as the user could change the
// list very quickly, or the garbage collector could kick in and remove the
// deleted entries. We don't allow the user to change the directory, thus the
// contents of the file list are constant, so we can avoid the constant file
// and text entry refreshes whenever a button is pressed, and prevent possible
// crashes because of these constant quick object reallocations.
// Fixes bug: #5096
static const uint16 qfg2SignatureImportDialog[] = {
0x63, SIG_MAGICDWORD, 0x20, // pToa text
0x30, SIG_UINT16(0x000b), // bnt [next state]
0x7a, // push2
0x39, 0x03, // pushi 03
0x36, // push
0x43, 0x72, 0x04, // callk Memory 4
0x35, 0x00, // ldi 00
0x65, 0x20, // aTop text
SIG_END
};
static const uint16 qfg2PatchImportDialog[] = {
PATCH_ADDTOOFFSET(+5),
0x48, // ret
PATCH_END
};
// Quest For Glory 2 character import doesn't properly set the character type
// in versions 1.102 and below, which makes all importerted characters a fighter.
//
// Sierra released an official patch. However the fix is really easy to
// implement on our side, so we also patch the flaw in here in case we find it.
//
// The version released on GOG is 1.102 without this patch applied, so us
// patching it is quite useful.
//
// Applies to at least: English Floppy
// Responsible method: importHero::changeState
// Fixes bug: inside versions 1.102 and below
static const uint16 qfg2SignatureImportCharType[] = {
0x35, 0x04, // ldi 04
0x90, SIG_UINT16(0x023b), // lagi global[23Bh]
0x02, // add
0x36, // push
0x35, 0x04, // ldi 04
0x08, // div
0x36, // push
0x35, 0x0d, // ldi 0D
0xb0, SIG_UINT16(0x023b), // sagi global[023Bh]
0x8b, 0x1f, // lsl local[1Fh]
0x35, 0x05, // ldi 05
SIG_MAGICDWORD,
0xb0, SIG_UINT16(0x0150), // sagi global[0150h]
0x8b, 0x02, // lsl local[02h]
SIG_END
};
static const uint16 qfg2PatchImportCharType[] = {
0x80, PATCH_UINT16(0x023f), // lag global[23Fh] <-- patched to save 2 bytes
0x02, // add
0x36, // push
0x35, 0x04, // ldi 04
0x08, // div
0x36, // push
0xa8, SIG_UINT16(0x0248), // ssg global[0248h] <-- patched to save 2 bytes
0x8b, 0x1f, // lsl local[1Fh]
0xa8, SIG_UINT16(0x0155), // ssg global[0155h] <-- patched to save 2 bytes
// new code, directly from the official sierra patch file
0x83, 0x01, // lal local[01h]
0xa1, 0xbb, // sag global[BBh]
0xa1, 0x73, // sag global[73h]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry qfg2Signatures[] = {
{ true, 665, "getting back on saurus freeze fix", 1, qfg2SignatureSaurusFreeze, qfg2PatchSaurusFreeze },
{ true, 805, "import character type fix", 1, qfg2SignatureImportCharType, qfg2PatchImportCharType },
{ true, 944, "import dialog continuous calls", 1, qfg2SignatureImportDialog, qfg2PatchImportDialog },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// Patch for the import screen in QFG3, same as the one for QFG2 above
static const uint16 qfg3SignatureImportDialog[] = {
0x63, SIG_MAGICDWORD, 0x2a, // pToa text
0x31, 0x0b, // bnt [next state]
0x7a, // push2
0x39, 0x03, // pushi 03
0x36, // push
0x43, 0x72, 0x04, // callk Memory 4
0x35, 0x00, // ldi 00
0x65, 0x2a, // aTop text
SIG_END
};
static const uint16 qfg3PatchImportDialog[] = {
PATCH_ADDTOOFFSET(+4),
0x48, // ret
PATCH_END
};
// ===========================================================================
// Patch for the Woo dialog option in Uhura's conversation.
// Problem: The Woo dialog option (0xffb5) is negative, and therefore
// treated as an option opening a submenu. This leads to uhuraTell::doChild
// being called, which calls hero::solvePuzzle and then proceeds with
// Teller::doChild to open the submenu. However, there is no actual submenu
// defined for option -75 since -75 does not show up in uhuraTell::keys.
// This will cause Teller::doChild to run out of bounds while scanning through
// uhuraTell::keys.
// Strategy: there is another conversation option in uhuraTell::doChild calling
// hero::solvePuzzle (0xfffc) which does a ret afterwards without going to
// Teller::doChild. We jump to this call of hero::solvePuzzle to get that same
// behaviour.
// Applies to at least: English, German, Italian, French, Spanish Floppy
// Responsible method: uhuraTell::doChild
// Fixes bug: #5172
static const uint16 qfg3SignatureWooDialog[] = {
SIG_MAGICDWORD,
0x67, 0x12, // pTos 12 (query)
0x35, 0xb6, // ldi b6
0x1a, // eq?
0x2f, 0x05, // bt 05
0x67, 0x12, // pTos 12 (query)
0x35, 0x9b, // ldi 9b
0x1a, // eq?
0x31, 0x0c, // bnt 0c
0x38, SIG_SELECTOR16(solvePuzzle), // pushi 0297
0x7a, // push2
0x38, SIG_UINT16(0x010c), // pushi 010c
0x7a, // push2
0x81, 0x00, // lag 00
0x4a, 0x08, // send 08
0x67, 0x12, // pTos 12 (query)
0x35, 0xb5, // ldi b5
SIG_END
};
static const uint16 qfg3PatchWooDialog[] = {
PATCH_ADDTOOFFSET(+0x29),
0x33, 0x11, // jmp to 0x6a2, the call to hero::solvePuzzle for 0xFFFC
PATCH_END
};
// Alternative version, with uint16 offsets, for GOG release of QfG3.
static const uint16 qfg3SignatureWooDialogAlt[] = {
SIG_MAGICDWORD,
0x67, 0x12, // pTos 12 (query)
0x35, 0xb6, // ldi b6
0x1a, // eq?
0x2e, SIG_UINT16(0x0005), // bt 05
0x67, 0x12, // pTos 12 (query)
0x35, 0x9b, // ldi 9b
0x1a, // eq?
0x30, SIG_UINT16(0x000c), // bnt 0c
0x38, SIG_SELECTOR16(solvePuzzle), // pushi 0297
0x7a, // push2
0x38, SIG_UINT16(0x010c), // pushi 010c
0x7a, // push2
0x81, 0x00, // lag 00
0x4a, 0x08, // send 08
0x67, 0x12, // pTos 12 (query)
0x35, 0xb5, // ldi b5
SIG_END
};
static const uint16 qfg3PatchWooDialogAlt[] = {
PATCH_ADDTOOFFSET(+0x2C),
0x33, 0x12, // jmp to 0x708, the call to hero::solvePuzzle for 0xFFFC
PATCH_END
};
// When exporting characters at the end of Quest for Glory 3, the underlying
// code has issues with values, that are above 9999.
// For further study: https://github.com/Blazingstix/QFGImporter/blob/master/QFGImporter/QFGImporter/QFG3.txt
//
// If a value is above 9999, parts or even the whole character file will get corrupted.
//
// We are fixing the code because of that. We are patching code, that is calculating the checksum
// and add extra code to lower such values to 9999.
//
// Applies to at least: English, French, German, Italian, Spanish floppy
// Responsible method: saveHero::changeState
// Fixes bug #6807
static const uint16 qfg3SignatureExportChar[] = {
0x35, SIG_ADDTOOFFSET(+1), // ldi 00 / ldi 01 (2 loops, we patch both)
0xa5, 0x00, // sat temp[0] [contains index to data]
0x8d, 0x00, // lst temp[0]
SIG_MAGICDWORD,
0x35, 0x2c, // ldi 2c
0x22, // lt? [index above or equal 2Ch (44d)?
0x31, 0x23, // bnt [exit loop]
// from this point it's actually useless code, maybe a sci compiler bug
0x8d, 0x00, // lst temp[0]
0x35, 0x01, // ldi 01
0x02, // add
0x9b, 0x00, // lsli local[0] ---------- load local[0 + ACC] onto stack
0x8d, 0x00, // lst temp[0]
0x35, 0x01, // ldi 01
0x02, // add
0xb3, 0x00, // sali local[0] ---------- save stack to local[0 + ACC]
// end of useless code
0x8b, SIG_ADDTOOFFSET(+1), // lsl local[36h/37h] ---- load local[36h/37h] onto stack
0x8d, 0x00, // lst temp[0]
0x35, 0x01, // ldi 01
0x02, // add
0x93, 0x00, // lali local[0] ---------- load local[0 + ACC] into ACC
0x02, // add -------------------- add ACC + stack and put into ACC
0xa3, SIG_ADDTOOFFSET(+1), // sal local[36h/37h] ---- save ACC to local[36h/37h]
0x8d, 0x00, // lst temp[0] ------------ temp[0] to stack
0x35, 0x02, // ldi 02
0x02, // add -------------------- add 2 to stack
0xa5, 0x00, // sat temp[0] ------------ save ACC to temp[0]
0x33, 0xd6, // jmp [loop]
SIG_END
};
static const uint16 qfg3PatchExportChar[] = {
PATCH_ADDTOOFFSET(+11),
0x85, 0x00, // lat temp[0]
0x9b, 0x01, // lsli local[0] + 1 ------ load local[ ACC + 1] onto stack
0x3c, // dup
0x34, PATCH_UINT16(0x2710), // ldi 2710h (10000d)
0x2c, // ult? ------------------- is value smaller than 10000?
0x2f, 0x0a, // bt [jump over]
0x3a, // toss
0x38, PATCH_UINT16(0x270f), // pushi 270fh (9999d)
0x3c, // dup
0x85, 0x00, // lat temp[0]
0xba, PATCH_UINT16(0x0001), // ssli local[0] + 1 ------ save stack to local[ ACC + 1] (UINT16 to waste 1 byte)
// jump offset
0x83, PATCH_GETORIGINALBYTE(+26), // lal local[37h/36h] ---- load local[37h/36h] into ACC
0x02, // add -------------------- add local[37h/36h] + data value
PATCH_END
};
// Quest for Glory 3 doesn't properly import the character type of Quest for Glory 1 character files.
// This issue was never addressed. It's caused by Sierra reading data directly from the local
// area, which is only set by Quest For Glory 2 import data, instead of reading the properly set global variable.
//
// We fix it, by also directly setting the local variable.
//
// Applies to at least: English, French, German, Italian, Spanish floppy
// Responsible method: importHero::changeState(4)
static const uint16 qfg3SignatureImportQfG1Char[] = {
SIG_MAGICDWORD,
0x82, SIG_UINT16(0x0238), // lal local[0x0238]
0xa0, SIG_UINT16(0x016a), // sag global[0x016a]
0xa1, 0x7d, // sag global[0x7d]
0x35, 0x01, // ldi 01
0x99, 0xfb, // lsgi global[0xfb]
SIG_END
};
static const uint16 qfg3PatchImportQfG1Char[] = {
PATCH_ADDTOOFFSET(+8),
0xa3, 0x01, // sal 01 -> also set local[01]
0x89, 0xfc, // lsg global[0xFD] -> save 2 bytes
PATCH_END
};
// The chief in his hut (room 640) is not drawn using the correct priority,
// which results in a graphical glitch. This is a game bug and also happens
// in Sierra's SCI. We adjust priority accordingly to fix it.
//
// Applies to at least: English, French, German, Italian, Spanish floppy
// Responsible method: heap in script 640
// Fixes bug #5173
static const uint16 qfg3SignatureChiefPriority[] = {
SIG_MAGICDWORD,
SIG_UINT16(0x0002), // yStep 0x0002
SIG_UINT16(0x0281), // view 0x0281
SIG_UINT16(0x0000), // loop 0x0000
SIG_UINT16(0x0000), // cel 0x0000
SIG_UINT16(0x0000), // priority 0x0000
SIG_UINT16(0x0000), // underbits 0x0000
SIG_UINT16(0x1000), // signal 0x1000
SIG_END
};
static const uint16 qfg3PatchChiefPriority[] = {
PATCH_ADDTOOFFSET(+8),
PATCH_UINT16(0x000A), // new priority 0x000A (10d)
PATCH_ADDTOOFFSET(+2),
PATCH_UINT16(0x1010), // signal 0x1010 (set fixed priority flag)
PATCH_END
};
// There are 3 points that can't be achieved in the game. They should've been
// awarded for telling Rakeesh and Kreesha (room 285) about the Simabni
// initiation.
// However the array of posibble messages the hero can tell in that room
// (local 156) is missing the "Tell about Initiation" message (#31) which
// awards these points.
// This patch adds the message to that array, thus allowing the hero to tell
// that message (after completing the initiation) and gain the 3 points.
// A side effect of increasing the local156 array is that the next local
// array is shifted and shrinks in size from 4 words to 3. The patch changes
// the 2 locations in the script that reference that array, to point to the new
// location ($aa --> $ab). It is safe to shrink the 2nd array to 3 words
// because only the first element in it is ever used.
//
// Note: You have to re-enter the room in case a saved game was loaded from a
// previous version of ScummVM and that saved game was made inside that room.
//
// Applies to: English, French, German, Italian, Spanish and the GOG release.
// Responsible method: heap in script 285
// Fixes bug #7086
static const uint16 qfg3SignatureMissingPoints1[] = {
// local[$9c] = [0 -41 -76 1 -30 -77 -33 -34 -35 -36 -37 -42 -80 999]
// local[$aa] = [0 0 0 0]
SIG_UINT16(0x0000), // 0 START MARKER
SIG_MAGICDWORD,
SIG_UINT16(0xFFD7), // -41 "Greet"
SIG_UINT16(0xFFB4), // -76 "Say Good-bye"
SIG_UINT16(0x0001), // 1 "Tell about Tarna"
SIG_UINT16(0xFFE2), // -30 "Tell about Simani"
SIG_UINT16(0xFFB3), // -77 "Tell about Prisoner"
SIG_UINT16(0xFFDF), // -33 "Dispelled Leopard Lady"
SIG_UINT16(0xFFDE), // -34 "Tell about Leopard Lady"
SIG_UINT16(0xFFDD), // -35 "Tell about Leopard Lady"
SIG_UINT16(0xFFDC), // -36 "Tell about Leopard Lady"
SIG_UINT16(0xFFDB), // -37 "Tell about Village"
SIG_UINT16(0xFFD6), // -42 "Greet"
SIG_UINT16(0xFFB0), // -80 "Say Good-bye"
SIG_UINT16(0x03E7), // 999 END MARKER
SIG_ADDTOOFFSET(+2), // local[$aa][0]
SIG_END
};
static const uint16 qfg3PatchMissingPoints1[] = {
PATCH_ADDTOOFFSET(+14),
PATCH_UINT16(0xFFE1), // -31 "Tell about Initiation"
PATCH_UINT16(0xFFDE), // -34 "Tell about Leopard Lady"
PATCH_UINT16(0xFFDD), // -35 "Tell about Leopard Lady"
PATCH_UINT16(0xFFDC), // -36 "Tell about Leopard Lady"
PATCH_UINT16(0xFFDB), // -37 "Tell about Village"
PATCH_UINT16(0xFFD6), // -42 "Greet"
PATCH_UINT16(0xFFB0), // -80 "Say Good-bye"
PATCH_UINT16(0x03E7), // 999 END MARKER
PATCH_GETORIGINALUINT16(+28), // local[$aa][0]
PATCH_END
};
static const uint16 qfg3SignatureMissingPoints2a[] = {
SIG_MAGICDWORD,
0x35, 0x00, // ldi 0
0xb3, 0xaa, // sali local[$aa]
SIG_END
};
static const uint16 qfg3SignatureMissingPoints2b[] = {
SIG_MAGICDWORD,
0x36, // push
0x5b, 0x02, 0xaa, // lea local[$aa]
SIG_END
};
static const uint16 qfg3PatchMissingPoints2[] = {
PATCH_ADDTOOFFSET(+3),
0xab, // local[$aa] ==> local[$ab]
PATCH_END
};
// Partly WORKAROUND:
// During combat, the game is not properly throttled. That's because the game uses
// an inner loop for combat and does not iterate through the main loop.
// It also doesn't call kGameIsRestarting. This may get fixed properly at some point
// by rewriting the speed throttler.
//
// Additionally Sierra set the cycle speed of the hero to 0. Which explains
// why the actions of the hero are so incredibly fast. This issue also happened
// in the original interpreter, when the computer was too powerful.
//
// Applies to at least: English, French, German, Italian, Spanish PC floppy
// Responsible method: combatControls::dispatchEvent (script 550) + WarriorObj in heap
// Fixes bug #6247
static const uint16 qfg3SignatureCombatSpeedThrottling1[] = {
0x31, 0x0d, // bnt [skip code]
SIG_MAGICDWORD,
0x89, 0xd2, // lsg global[D2h]
0x35, 0x00, // ldi 0
0x1e, // gt?
0x31, 0x06, // bnt [skip code]
0xe1, 0xd2, // -ag global[D2h] (jump skips over this)
0x81, 0x58, // lag global[58h]
0xa3, 0x01, // sal local[01]
SIG_END
};
static const uint16 qfg3PatchCombatSpeedThrottling1[] = {
0x80, 0xd2, // lsg global[D2h]
0x14, // or
0x31, 0x06, // bnt [skip code] - saves 4 bytes
0xe1, 0xd2, // -ag global[D2h]
0x81, 0x58, // lag global[58h]
0xa3, 0x01, // sal local[01] (jump skips over this)
// our code
0x76, // push0
0x43, 0x2c, 0x00, // callk GameIsRestarting <-- add this so that our speed throttler is triggered
PATCH_END
};
static const uint16 qfg3SignatureCombatSpeedThrottling2[] = {
SIG_MAGICDWORD,
SIG_UINT16(12), // priority 12
SIG_UINT16(0), // underbits 0
SIG_UINT16(0x4010), // signal 4010h
SIG_ADDTOOFFSET(+18),
SIG_UINT16(0), // scaleSignal 0
SIG_UINT16(128), // scaleX
SIG_UINT16(128), // scaleY
SIG_UINT16(128), // maxScale
SIG_UINT16(0), // cycleSpeed
SIG_END
};
static const uint16 qfg3PatchCombatSpeedThrottling2[] = {
PATCH_ADDTOOFFSET(+32),
PATCH_UINT16(5), // set cycleSpeed to 5
PATCH_END
};
// In room #750, when the hero enters from the top east path (room #755), it
// could go out of the contained-access polygon bounds, and be able to travel
// freely in the room.
// The reason is that the cutoff y value (42) that determines whether the hero
// enters from the top or bottom path is inaccurate: it's possible to enter the
// top path from as low as y=45.
// This patch changes the cutoff to be 50 which should be low enough.
// It also changes the position in which the hero enters from the top east path
// as the current location is hidden behind the tree.
//
// Applies to: English, French, German, Italian, Spanish and the GOG release.
// Responsible method: enterEast::changeState (script 750)
// Fixes bug #6693
static const uint16 qfg3SignatureRoom750Bounds1[] = {
// (if (< (ego y?) 42)
0x76, // push0 ("y")
0x76, // push0
0x81, 0x00, // lag global[0] (ego)
0x4a, 0x04, // send 4
SIG_MAGICDWORD,
0x36, // push
0x35, 42, // ldi 42 <-- comparing ego.y with 42
0x22, // lt?
SIG_END
};
static const uint16 qfg3PatchRoom750Bounds1[] = {
// (if (< (ego y?) 50)
PATCH_ADDTOOFFSET(+8),
50, // 42 --> 50
PATCH_END
};
static const uint16 qfg3SignatureRoom750Bounds2[] = {
// (ego x: 294 y: 39)
0x78, // push1 ("x")
0x78, // push1
0x38, SIG_UINT16(294), // pushi 294
0x76, // push0 ("y")
0x78, // push1
SIG_MAGICDWORD,
0x39, 29, // pushi 29
0x81, 0x00, // lag global[0] (ego)
0x4a, 0x0c, // send 12
SIG_END
};
static const uint16 qfg3PatchRoom750Bounds2[] = {
// (ego x: 320 y: 39)
PATCH_ADDTOOFFSET(+3),
PATCH_UINT16(320), // 294 --> 320
PATCH_ADDTOOFFSET(+3),
39, // 29 --> 39
PATCH_END
};
static const uint16 qfg3SignatureRoom750Bounds3[] = {
// (ego setMotion: MoveTo 282 29 self)
0x38, SIG_SELECTOR16(setMotion), // pushi "setMotion" 0x133 in QfG3
0x39, 0x04, // pushi 4
0x51, SIG_ADDTOOFFSET(+1), // class MoveTo
0x36, // push
0x38, SIG_UINT16(282), // pushi 282
SIG_MAGICDWORD,
0x39, 29, // pushi 29
0x7c, // pushSelf
0x81, 0x00, // lag global[0] (ego)
0x4a, 0x0c, // send 12
SIG_END
};
static const uint16 qfg3PatchRoom750Bounds3[] = {
// (ego setMotion: MoveTo 309 35 self)
PATCH_ADDTOOFFSET(+9),
PATCH_UINT16(309), // 282 --> 309
PATCH_ADDTOOFFSET(+1),
35, // 29 --> 35
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry qfg3Signatures[] = {
{ true, 944, "import dialog continuous calls", 1, qfg3SignatureImportDialog, qfg3PatchImportDialog },
{ true, 440, "dialog crash when asking about Woo", 1, qfg3SignatureWooDialog, qfg3PatchWooDialog },
{ true, 440, "dialog crash when asking about Woo", 1, qfg3SignatureWooDialogAlt, qfg3PatchWooDialogAlt },
{ true, 52, "export character save bug", 2, qfg3SignatureExportChar, qfg3PatchExportChar },
{ true, 54, "import character from QfG1 bug", 1, qfg3SignatureImportQfG1Char, qfg3PatchImportQfG1Char },
{ true, 640, "chief in hut priority fix", 1, qfg3SignatureChiefPriority, qfg3PatchChiefPriority },
{ true, 285, "missing points for telling about initiation heap", 1, qfg3SignatureMissingPoints1, qfg3PatchMissingPoints1 },
{ true, 285, "missing points for telling about initiation script", 1, qfg3SignatureMissingPoints2a, qfg3PatchMissingPoints2 },
{ true, 285, "missing points for telling about initiation script", 1, qfg3SignatureMissingPoints2b, qfg3PatchMissingPoints2 },
{ true, 550, "combat speed throttling script", 1, qfg3SignatureCombatSpeedThrottling1, qfg3PatchCombatSpeedThrottling1 },
{ true, 550, "combat speed throttling heap", 1, qfg3SignatureCombatSpeedThrottling2, qfg3PatchCombatSpeedThrottling2 },
{ true, 750, "hero goes out of bounds in room 750", 2, qfg3SignatureRoom750Bounds1, qfg3PatchRoom750Bounds1 },
{ true, 750, "hero goes out of bounds in room 750", 2, qfg3SignatureRoom750Bounds2, qfg3PatchRoom750Bounds2 },
{ true, 750, "hero goes out of bounds in room 750", 2, qfg3SignatureRoom750Bounds3, qfg3PatchRoom750Bounds3 },
SCI_SIGNATUREENTRY_TERMINATOR
};
#ifdef ENABLE_SCI32
#pragma mark -
#pragma mark Quest for Glory 4
// The init code that runs when QFG4 starts up unconditionally resets the
// master music volume to 15, but the game should always use the volume stored
// in ScummVM.
// Applies to at least: English floppy
static const uint16 qfg4SignatureVolumeReset[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x215), // pushi $215 (masterVolume)
0x78, // push1
0x39, 0x0f, // pushi $f
0x81, 0x01, // lag 1 (Glory object)
0x4a, SIG_UINT16(0x06), // send 6
SIG_END
};
// Same as above, but with a different masterVolume selector.
// Applies to at least: English CD
static const uint16 qfg4CDSignatureVolumeReset[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x217), // pushi $217 (masterVolume)
0x78, // push1
0x39, 0x0f, // pushi $f
0x81, 0x01, // lag 1 (Glory object)
0x4a, SIG_UINT16(0x06), // send 6
SIG_END
};
static const uint16 qfg4PatchVolumeReset[] = {
0x32, PATCH_UINT16(8), // jmp 8 [past volume changes]
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry qfg4Signatures[] = {
{ true, 1, "disable volume reset on startup (floppy)", 1, qfg4SignatureVolumeReset, qfg4PatchVolumeReset },
{ true, 1, "disable volume reset on startup (CD)", 1, qfg4CDSignatureVolumeReset, qfg4PatchVolumeReset },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature1, sci2NumSavesPatch1 },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature2, sci2NumSavesPatch2 },
{ true, 64990, "disable change directory button", 1, sci2ChangeDirSignature, sci2ChangeDirPatch },
SCI_SIGNATUREENTRY_TERMINATOR
};
#endif
// ===========================================================================
// script 298 of sq4/floppy has an issue. object "nest" uses another property
// which isn't included in property count. We return 0 in that case, the game
// adds it to nest::x. The problem is that the script also checks if x exceeds
// we never reach that of course, so the pterodactyl-flight will go endlessly
// we could either calculate property count differently somehow fixing this
// but I think just patching it out is cleaner.
// Fixes bug: #5093
static const uint16 sq4FloppySignatureEndlessFlight[] = {
0x39, 0x04, // pushi 04 (selector x)
SIG_MAGICDWORD,
0x78, // push1
0x67, 0x08, // pTos 08 (property x)
0x63, SIG_ADDTOOFFSET(+1), // pToa (invalid property) - 44h for English floppy, 4ch for German floppy
0x02, // add
SIG_END
};
static const uint16 sq4FloppyPatchEndlessFlight[] = {
PATCH_ADDTOOFFSET(+5),
0x35, 0x03, // ldi 03 (which would be the content of the property)
PATCH_END
};
// Floppy-only: When the player tries to throw something at the sequel police in Space Quest X (zero g zone),
// the game will first show a textbox and then cause a signature mismatch in ScummVM/
// crash the whole game in Sierra SCI/display garbage (the latter when the Sierra "patch" got applied).
//
// All of this is caused by a typo in the script. Right after the code for showing the textbox,
// there is more similar code for showing another textbox, but without a pointer to the text.
// This has to be a typo, because there is no unused text to be found within that script.
//
// Sierra's "patch" didn't include a proper fix (as in a modified script). Instead they shipped a dummy
// text resource, which somewhat "solved" the issue in Sierra SCI, but it still showed another textbox
// with garbage in it. Funnily Sierra must have known that, because that new text resource contains:
// "Hi! This is a kludge!"
//
// We properly fix it by removing the faulty code.
// Applies to at least: English Floppy
// Responsible method: sp1::doVerb
// Fixes bug: found by SCI developer
static const uint16 sq4FloppySignatureThrowStuffAtSequelPoliceBug[] = {
0x47, 0xff, 0x00, 0x02, // call export 255_0, 2
0x3a, // toss
SIG_MAGICDWORD,
0x36, // push
0x47, 0xff, 0x00, 0x02, // call export 255_0, 2
SIG_END
};
static const uint16 sq4FloppyPatchThrowStuffAtSequelPoliceBug[] = {
PATCH_ADDTOOFFSET(+5),
0x48, // ret
PATCH_END
};
// Right at the start of Space Quest 4 CD, when walking up in the first room, ego will
// immediately walk down just after entering the upper room.
//
// This is caused by the scripts setting ego's vertical coordinate to 189 (BDh), which is the
// trigger in rooms to walk to the room below it. Sometimes this isn't triggered, because
// the scripts also initiate a motion to vertical coordinate 188 (BCh). When you lower the game's speed,
// this bug normally always triggers. And it triggers of course also in the original interpreter.
//
// It doesn't happen in PC floppy, because nsRect is not the same as in CD.
//
// We fix it by setting ego's vertical coordinate to 188 and we also initiate a motion to 187.
//
// Applies to at least: English PC CD
// Responsible method: rm045::doit
// Fixes bug: #5468
static const uint16 sq4CdSignatureWalkInFromBelowRoom45[] = {
0x76, // push0
SIG_MAGICDWORD,
0x78, // push1
0x38, SIG_UINT16(0x00bd), // pushi 00BDh
0x38, SIG_ADDTOOFFSET(+2), // pushi [setMotion selector]
0x39, 0x03, // pushi 3
0x51, SIG_ADDTOOFFSET(+1), // class [MoveTo]
0x36, // push
0x78, // push1
0x76, // push0
0x81, 0x00, // lag global[0]
0x4a, 0x04, // send 04 -> get ego::x
0x36, // push
0x38, SIG_UINT16(0x00bc), // pushi 00BCh
SIG_END
};
static const uint16 sq4CdPatchWalkInFromBelowRoom45[] = {
PATCH_ADDTOOFFSET(+2),
0x38, PATCH_UINT16(0x00bc), // pushi 00BCh
PATCH_ADDTOOFFSET(+15),
0x38, PATCH_UINT16(0x00bb), // pushi 00BBh
PATCH_END
};
// It seems that Sierra forgot to set a script flag, when cleaning out the bank account
// in Space Quest 4 CD. This was probably caused by the whole bank account interaction
// getting a rewrite and polish in the CD version.
//
// Because of this bug, points for changing back clothes will not get awarded, which
// makes it impossible to get a perfect point score in the CD version of the game.
// The points are awarded by rm371::doit in script 371.
//
// We fix this. Bug also happened, when using the original interpreter.
// Bug does not happen for PC floppy.
//
// Attention: Some Let's Plays on youtube show that points are in fact awarded. Which is true.
// But those Let's Plays were actually created by playing a hacked Space Quest 4 version
// (which is part Floppy, part CD version - we consider it to be effectively pirated)
// and not the actual CD version of Space Quest 4.
// It's easy to identify - talkie + store called "Radio Shack" -> is hacked version.
//
// Applies to at least: English PC CD
// Responsible method: but2Script::changeState(2)
// Fixes bug: #6866
static const uint16 sq4CdSignatureGetPointsForChangingBackClothes[] = {
0x35, 0x02, // ldi 02
SIG_MAGICDWORD,
0x1a, // eq?
0x30, SIG_UINT16(0x006a), // bnt [state 3]
0x76,
SIG_ADDTOOFFSET(+46), // jump over "withdraw funds" code
0x33, 0x33, // jmp [end of state 2, set cycles code]
SIG_ADDTOOFFSET(+51), // jump over "clean bank account" code
0x35, 0x02, // ldi 02
0x65, 0x1a, // aTop cycles
0x33, 0x0b, // jmp [toss/ret]
0x3c, // dup
0x35, 0x03, // ldi 03
0x1a, // eq?
0x31, 0x05, // bnt [toss/ret]
SIG_END
};
static const uint16 sq4CdPatchGetPointsForChangingBackClothes[] = {
PATCH_ADDTOOFFSET(+3),
0x30, PATCH_UINT16(0x0070), // bnt [state 3]
PATCH_ADDTOOFFSET(+47), // "withdraw funds" code
0x33, 0x39, // jmp [end of state 2, set cycles code]
PATCH_ADDTOOFFSET(+51),
0x78, // push1
0x39, 0x1d, // ldi 1Dh
0x45, 0x07, 0x02, // call export 7 of script 0 (set flag) -> effectively sets global 73h, bit 2
0x35, 0x02, // ldi 02
0x65, 0x1c, // aTop cycles
0x33, 0x05, // jmp [toss/ret]
// check for state 3 code removed to save 6 bytes
PATCH_END
};
// For Space Quest 4 CD, Sierra added a pick up animation for Roger, when he picks up the rope.
//
// When the player is detected by the zombie right at the start of the game, while picking up the rope,
// scripts bomb out. This also happens, when using the original interpreter.
//
// This is caused by code, that's supposed to make Roger face the arriving drone.
// We fix it, by checking if ego::cycler is actually set before calling that code.
//
// Applies to at least: English PC CD
// Responsible method: droidShoots::changeState(3)
// Fixes bug: #6076
static const uint16 sq4CdSignatureGettingShotWhileGettingRope[] = {
0x35, 0x02, // ldi 02
0x65, 0x1a, // aTop cycles
0x32, SIG_UINT16(0x02fa), // jmp [end]
SIG_MAGICDWORD,
0x3c, // dup
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, 0x0b, // bnt [state 3 check]
0x76, // push0
0x45, 0x02, 0x00, // call export 2 of script 0 -> disable controls
0x35, 0x02, // ldi 02
0x65, 0x1a, // aTop cycles
0x32, SIG_UINT16(0x02e9), // jmp [end]
0x3c, // dup
0x35, 0x03, // ldi 03
0x1a, // eq?
0x31, 0x1e, // bnt [state 4 check]
0x76, // push0
0x45, 0x02, 0x00, // call export 2 of script 0 -> disable controls again??
0x7a, // push2
0x89, 0x00, // lsg global[0]
0x72, SIG_UINT16(0x0242), // lofsa deathDroid
0x36, // push
0x45, 0x0d, 0x04, // call export 13 of script 0 -> set heading of ego to face droid
SIG_END
};
static const uint16 sq4CdPatchGettingShotWhileGettingRope[] = {
PATCH_ADDTOOFFSET(+11),
// this makes state 2 only do the 2 cycles wait, controls should always be disabled already at this point
0x2f, 0xf3, // bt [previous state aTop cycles code]
// Now we check for state 3, this change saves us 11 bytes
0x3c, // dup
0x35, 0x03, // ldi 03
0x1a, // eq?
0x31, 0x29, // bnt [state 4 check]
// new state 3 code
0x76, // push0
0x45, 0x02, 0x00, // call export 2 of script 0 (disable controls, actually not needed)
0x38, PATCH_SELECTOR16(cycler), // pushi cycler
0x76, // push0
0x81, 0x00, // lag global[0]
0x4a, 0x04, // send 04 (get ego::cycler)
0x30, PATCH_UINT16(10), // bnt [jump over heading call]
PATCH_END
};
// The scripts in SQ4CD support simultaneous playing of speech and subtitles,
// but this was not available as an option. The following two patches enable
// this functionality in the game's GUI options dialog.
// Patch 1: iconTextSwitch::show, called when the text options button is shown.
// This is patched to add the "Both" text resource (i.e. we end up with
// "Speech", "Text" and "Both")
static const uint16 sq4CdSignatureTextOptionsButton[] = {
SIG_MAGICDWORD,
0x35, 0x01, // ldi 0x01
0xa1, 0x53, // sag 0x53
0x39, 0x03, // pushi 0x03
0x78, // push1
0x39, 0x09, // pushi 0x09
0x54, 0x06, // self 0x06
SIG_END
};
static const uint16 sq4CdPatchTextOptionsButton[] = {
PATCH_ADDTOOFFSET(+7),
0x39, 0x0b, // pushi 0x0b
PATCH_END
};
// Patch 2: Adjust a check in babbleIcon::init, which handles the babble icon
// (e.g. the two guys from Andromeda) shown when dying/quitting.
// Fixes bug: #6068
static const uint16 sq4CdSignatureBabbleIcon[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg 5a
0x35, 0x02, // ldi 02
0x1a, // eq?
0x31, 0x26, // bnt 26 [02a7]
SIG_END
};
static const uint16 sq4CdPatchBabbleIcon[] = {
0x89, 0x5a, // lsg 5a
0x35, 0x01, // ldi 01
0x1a, // eq?
0x2f, 0x26, // bt 26 [02a7]
PATCH_END
};
// Patch 3: Add the ability to toggle among the three available options,
// when the text options button is clicked: "Speech", "Text" and "Both".
// Refer to the patch above for additional details.
// iconTextSwitch::doit (called when the text options button is clicked)
static const uint16 sq4CdSignatureTextOptions[] = {
SIG_MAGICDWORD,
0x89, 0x5a, // lsg 0x5a (load global 90 to stack)
0x3c, // dup
0x35, 0x01, // ldi 0x01
0x1a, // eq? (global 90 == 1)
0x31, 0x06, // bnt 0x06 (0x0691)
0x35, 0x02, // ldi 0x02
0xa1, 0x5a, // sag 0x5a (save acc to global 90)
0x33, 0x0a, // jmp 0x0a (0x69b)
0x3c, // dup
0x35, 0x02, // ldi 0x02
0x1a, // eq? (global 90 == 2)
0x31, 0x04, // bnt 0x04 (0x069b)
0x35, 0x01, // ldi 0x01
0xa1, 0x5a, // sag 0x5a (save acc to global 90)
0x3a, // toss
0x38, SIG_SELECTOR16(show), // pushi 0x00d9
0x76, // push0
0x54, 0x04, // self 0x04
0x48, // ret
SIG_END
};
static const uint16 sq4CdPatchTextOptions[] = {
0x89, 0x5a, // lsg 0x5a (load global 90 to stack)
0x3c, // dup
0x35, 0x03, // ldi 0x03 (acc = 3)
0x1a, // eq? (global 90 == 3)
0x2f, 0x07, // bt 0x07
0x89, 0x5a, // lsg 0x5a (load global 90 to stack again)
0x35, 0x01, // ldi 0x01 (acc = 1)
0x02, // add: acc = global 90 (on stack) + 1 (previous acc value)
0x33, 0x02, // jmp 0x02
0x35, 0x01, // ldi 0x01 (reset acc to 1)
0xa1, 0x5a, // sag 0x5a (save acc to global 90)
0x33, 0x03, // jmp 0x03 (jump over the wasted bytes below)
0x34, PATCH_UINT16(0x0000), // ldi 0x0000 (waste 3 bytes)
0x3a, // toss
// (the rest of the code is the same)
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry sq4Signatures[] = {
{ true, 298, "Floppy: endless flight", 1, sq4FloppySignatureEndlessFlight, sq4FloppyPatchEndlessFlight },
{ true, 700, "Floppy: throw stuff at sequel police bug", 1, sq4FloppySignatureThrowStuffAtSequelPoliceBug, sq4FloppyPatchThrowStuffAtSequelPoliceBug },
{ true, 45, "CD: walk in from below for room 45 fix", 1, sq4CdSignatureWalkInFromBelowRoom45, sq4CdPatchWalkInFromBelowRoom45 },
{ true, 396, "CD: get points for changing back clothes fix",1, sq4CdSignatureGetPointsForChangingBackClothes, sq4CdPatchGetPointsForChangingBackClothes },
{ true, 701, "CD: getting shot, while getting rope", 1, sq4CdSignatureGettingShotWhileGettingRope, sq4CdPatchGettingShotWhileGettingRope },
{ true, 0, "CD: Babble icon speech and subtitles fix", 1, sq4CdSignatureBabbleIcon, sq4CdPatchBabbleIcon },
{ true, 818, "CD: Speech and subtitles option", 1, sq4CdSignatureTextOptions, sq4CdPatchTextOptions },
{ true, 818, "CD: Speech and subtitles option button", 1, sq4CdSignatureTextOptionsButton, sq4CdPatchTextOptionsButton },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// When you leave Ulence Flats, another timepod is supposed to appear.
// On fast machines, that timepod appears fully immediately and then
// starts to appear like it should be. That first appearance is caused
// by the scripts setting an invalid cel number and the machine being
// so fast that there is no time for another script to actually fix
// the cel number. On slower machines, the cel number gets fixed
// by the cycler and that's why only fast machines are affected.
// The same issue happens in Sierra SCI.
// We simply set the correct starting cel number to fix the bug.
// Responsible method: robotIntoShip::changeState(9)
static const uint16 sq1vgaSignatureUlenceFlatsTimepodGfxGlitch[] = {
0x39,
SIG_MAGICDWORD, SIG_SELECTOR8(cel), // pushi "cel"
0x78, // push1
0x39, 0x0a, // pushi 0x0a (set ship::cel to 10)
0x38, SIG_UINT16(0x00a0), // pushi 0x00a0 (ship::setLoop)
SIG_END
};
static const uint16 sq1vgaPatchUlenceFlatsTimepodGfxGlitch[] = {
PATCH_ADDTOOFFSET(+3),
0x39, 0x09, // pushi 0x09 (set ship::cel to 9)
PATCH_END
};
// In Ulence Flats, there is a space ship, that you will use at some point.
// Near that space ship are 2 force field generators.
// When you look at the top of those generators, the game will crash.
// This happens also in Sierra SCI. It's caused by a jump, that goes out of bounds.
// We currently do not know if this was caused by a compiler glitch or if it was a developer error.
// Anyway we patch this glitchy code, so that the game won't crash anymore.
//
// Applies to at least: English Floppy
// Responsible method: radar1::doVerb
// Fixes bug: #6816
static const uint16 sq1vgaSignatureUlenceFlatsGeneratorGlitch[] = {
SIG_MAGICDWORD, 0x1a, // eq?
0x30, SIG_UINT16(0xcdf4), // bnt absolute 0xf000
SIG_END
};
static const uint16 sq1vgaPatchUlenceFlatsGeneratorGlitch[] = {
PATCH_ADDTOOFFSET(+1),
0x32, PATCH_UINT16(0x0000), // jmp 0x0000 (waste bytes)
PATCH_END
};
// No documentation for this patch (TODO)
static const uint16 sq1vgaSignatureEgoShowsCard[] = {
SIG_MAGICDWORD,
0x38, SIG_SELECTOR16(timesShownID), // push "timesShownID"
0x78, // push1
0x38, SIG_SELECTOR16(timesShownID), // push "timesShownID"
0x76, // push0
0x51, 0x7c, // class DeltaurRegion
0x4a, 0x04, // send 0x04 (get timesShownID)
0x36, // push
0x35, 0x01, // ldi 1
0x02, // add
0x36, // push
0x51, 0x7c, // class DeltaurRegion
0x4a, 0x06, // send 0x06 (set timesShownID)
0x36, // push (wrong, acc clobbered by class, above)
0x35, 0x03, // ldi 0x03
0x22, // lt?
SIG_END
};
// Note that this script patch is merely a reordering of the
// instructions in the original script.
static const uint16 sq1vgaPatchEgoShowsCard[] = {
0x38, PATCH_SELECTOR16(timesShownID), // push "timesShownID"
0x76, // push0
0x51, 0x7c, // class DeltaurRegion
0x4a, 0x04, // send 0x04 (get timesShownID)
0x36, // push
0x35, 0x01, // ldi 1
0x02, // add
0x36, // push (this push corresponds to the wrong one above)
0x38, PATCH_SELECTOR16(timesShownID), // push "timesShownID"
0x78, // push1
0x36, // push
0x51, 0x7c, // class DeltaurRegion
0x4a, 0x06, // send 0x06 (set timesShownID)
0x35, 0x03, // ldi 0x03
0x22, // lt?
PATCH_END
};
// The spider droid on planet Korona has a fixed movement speed,
// which is way faster than the default movement speed of ego.
// This means that the player would have to turn up movement speed,
// otherwise it will be impossible to escape it.
// We fix this issue by making the droid move a bit slower than ego
// does (relative to movement speed setting).
//
// Applies to at least: English PC floppy
// Responsible method: spider::doit
static const uint16 sq1vgaSignatureSpiderDroidTiming[] = {
SIG_MAGICDWORD,
0x63, 0x4e, // pToa script
0x30, SIG_UINT16(0x0005), // bnt [further method code]
0x35, 0x00, // ldi 00
0x32, SIG_UINT16(0x0062), // jmp [super-call]
0x38, SIG_UINT16(0x0088), // pushi 0088h (script)
0x76, // push0
0x81, 0x02, // lag global[2] (current room)
0x4a, 0x04, // send 04 (get [current room].script)
0x30, SIG_UINT16(0x0005), // bnt [further method code]
0x35, 0x00, // ldi 00
0x32, SIG_UINT16(0x0052), // jmp [super-call]
0x89, 0xa6, // lsg global[a6] <-- flag gets set to 1 when ego went up the skeleton tail, when going down it's set to 2
0x35, 0x01, // ldi 01
0x1a, // eq?
0x30, SIG_UINT16(0x0012), // bnt [PChase set code], in case global A6 <> 1
0x81, 0xb5, // lag global[b5]
0x30, SIG_UINT16(0x000d), // bnt [PChase set code], in case global B5 == 0
0x38, SIG_UINT16(0x008c), // pushi 008c
0x78, // push1
0x72, SIG_UINT16(0x1cb6), // lofsa 1CB6 (moveToPath)
0x36, // push
0x54, 0x06, // self 06
0x32, SIG_UINT16(0x0038), // jmp [super-call]
// PChase set call
0x81, 0xb5, // lag global[B5]
0x18, // not
0x30, SIG_UINT16(0x0032), // bnt [super-call], in case global B5 <> 0
// followed by:
// is spider in current room
// is global A6h == 2? -> set PChase
SIG_END
}; // 58 bytes)
// Global A6h <> 1 (did NOT went up the skeleton)
// Global B5h = 0 -> set PChase
// Global B5h <> 0 -> do not do anything
// Global A6h = 1 (did went up the skeleton)
// Global B5h = 0 -> set PChase
// Global B5h <> 0 -> set moveToPath
static const uint16 sq1vgaPatchSpiderDroidTiming[] = {
0x63, 0x4e, // pToa script
0x2f, 0x68, // bt [super-call]
0x38, PATCH_UINT16(0x0088), // pushi 0088 (script)
0x76, // push0
0x81, 0x02, // lag global[2] (current room)
0x4a, 0x04, // send 04
0x2f, 0x5e, // bt [super-call]
// --> 12 bytes saved
// new code
0x38, PATCH_UINT16(0x0176), // pushi 0176 (egoMoveSpeed)
0x76, // push0
0x81, 0x01, // lag global[1]
0x4a, 0x04, // send 04 - sq1::egoMoveSpeed
0x36, // push
0x36, // push
0x35, 0x03, // ldi 03
0x0c, // shr
0x02, // add --> egoMoveSpeed + (egoMoveSpeed >> 3)
0x39, 0x01, // push 01 (waste 1 byte)
0x02, // add --> egoMoveSpeed++
0x65, 0x4c, // aTop cycleSpeed
0x65, 0x5e, // aTop moveSpeed
// new code end
0x81, 0xb5, // lag global[B5]
0x31, 0x13, // bnt [PChase code chunk]
0x89, 0xa6, // lsg global[A6]
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x3e, // bnt [super-call]
0x38, PATCH_UINT16(0x008c), // pushi 008c
0x78, // push1
0x72, PATCH_UINT16(0x1cb6), // lofsa moveToPath
0x36, // push
0x54, 0x06, // self 06 - spider::setScript(movePath)
0x33, 0x32, // jmp [super-call]
// --> 9 bytes saved
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry sq1vgaSignatures[] = {
{ true, 45, "Ulence Flats: timepod graphic glitch", 1, sq1vgaSignatureUlenceFlatsTimepodGfxGlitch, sq1vgaPatchUlenceFlatsTimepodGfxGlitch },
{ true, 45, "Ulence Flats: force field generator glitch", 1, sq1vgaSignatureUlenceFlatsGeneratorGlitch, sq1vgaPatchUlenceFlatsGeneratorGlitch },
{ true, 58, "Sarien armory droid zapping ego first time", 1, sq1vgaSignatureEgoShowsCard, sq1vgaPatchEgoShowsCard },
{ true, 704, "spider droid timing issue", 1, sq1vgaSignatureSpiderDroidTiming, sq1vgaPatchSpiderDroidTiming },
SCI_SIGNATUREENTRY_TERMINATOR
};
// ===========================================================================
// The toolbox in sq5 is buggy. When you click on the upper part of the "put
// in inventory"-button (some items only - for example the hole puncher - at the
// upper left), points will get awarded correctly and the item will get put into
// the player's inventory, but you will then get a "not here" message and the
// item will also remain to be the current mouse cursor.
// The bug report also says that items may get lost. I wasn't able to reproduce
// that part.
// This is caused by the mouse-click event getting reprocessed (which wouldn't
// be a problem by itself) and during this reprocessing coordinates are not
// processed the same as during the first click (script 226 includes a local
// subroutine, which checks coordinates in a hardcoded way w/o port-adjustment).
// Because of this, the hotspot for the button is lower than it should be, which
// then results in the game thinking that the user didn't click on the button
// and also results in the previously mentioned message.
// This happened in Sierra SCI as well (of course).
// We fix it by combining state 0 + 1 of takeTool::changeState and so stopping
// the event to get reprocessed. This was the only way possible, because everything
// else is done in SCI system scripts and I don't want to touch those.
// Applies to at least: English/German/French PC floppy
// Responsible method: takeTool::changeState
// Fixes bug: #6457
static const uint16 sq5SignatureToolboxFix[] = {
0x31, 0x13, // bnt [check for state 1]
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x00aa), // pushi 00aa
0x39, 0x05, // pushi 05
0x39, 0x16, // pushi 16
0x76, // push0
0x39, 0x03, // pushi 03
0x76, // push0
0x7c, // pushSelf
0x81, 0x5b, // lag 5b
0x4a, 0x0e, // send 0e
0x32, SIG_UINT16(0x0088), // jmp [end-of-method]
0x3c, // dup
0x35, 0x01, // ldi 01
0x1a, // eq?
0x31, 0x28, // bnt [check for state 2]
SIG_END
};
static const uint16 sq5PatchToolboxFix[] = {
0x31, 0x41, // bnt [check for state 2]
PATCH_ADDTOOFFSET(+16), // skip to jmp offset
0x35, 0x01, // ldi 01
0x65, 0x14, // aTop [state]
0x36, 0x00, 0x00, // ldi 0000 (waste 3 bytes)
0x35, 0x00, // ldi 00 (waste 2 bytes)
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry sq5Signatures[] = {
{ true, 226, "toolbox fix", 1, sq5SignatureToolboxFix, sq5PatchToolboxFix },
SCI_SIGNATUREENTRY_TERMINATOR
};
#ifdef ENABLE_SCI32
#pragma mark -
#pragma mark Shivers
// In room 35170, there is a CCTV control station with a joystick that must be
// clicked and dragged to pan the camera. In order to enable dragging, on
// mousedown, the vJoystick::handleEvent method calls vJoystick::doVerb(1),
// which enables the drag functionality of the joystick. However,
// vJoystick::handleEvent then makes a super call to ShiversProp::handleEvent,
// which calls vJoystick::doVerb(). This second call, which fails to pass an
// argument, causes an uninitialized read off the stack for the first parameter.
// In SSCI, this happens to work because the uninitialized value on the stack
// happens to be 1. Disabling the super call avoids the bad doVerb call without
// any apparent ill effect.
// The same problem exists when trying to drag the volume & brightness sliders
// in the main menu. These controls are also fixed by this patch.
static const uint16 shiversSignatureSuperCall[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0xa5), // pushi handleEvent
0x78, // push1
0x8f, 0x01, // lsp 1
0x59, 0x02, // &rest 2
0x57, 0x7f, SIG_UINT16(6), // super ShiversProp[7f], 6
SIG_END
};
static const uint16 shiversPatchSuperCall[] = {
0x48, // ret
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry shiversSignatures[] = {
{ true, 35170, "fix CCTV joystick interaction", 1, shiversSignatureSuperCall, shiversPatchSuperCall },
{ true, 990, "fix volume & brightness sliders", 2, shiversSignatureSuperCall, shiversPatchSuperCall },
SCI_SIGNATUREENTRY_TERMINATOR
};
#pragma mark -
#pragma mark Space Quest 6
// After the explosion in the Quarters of Deepship 86, the game tries to perform
// a dramatic long fade, but does this with an unreasonably large number of
// divisions which takes tens of seconds to finish (because transitions are not
// CPU-dependent in ScummVM).
static const uint16 sq6SlowTransitionSignature1[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x578), // pushi $0578
0x51, 0x33, // class Styler
SIG_END
};
static const uint16 sq6SlowTransitionPatch1[] = {
0x38, SIG_UINT16(500), // pushi 500
PATCH_END
};
// For whatever reason, SQ6 sets the default number of transition divisions to
// be a much larger value at startup (200 vs 30) if it thinks it is running in
// Windows. Room 410 (eulogy room) also unconditionally resets divisions to the
// larger value.
static const uint16 sq6SlowTransitionSignature2[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0xc8), // pushi $c8
0x51, 0x33, // class Styler
SIG_END
};
static const uint16 sq6SlowTransitionPatch2[] = {
0x38, SIG_UINT16(30), // pushi 30
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry sq6Signatures[] = {
{ true, 0, "fix slow transitions", 1, sq6SlowTransitionSignature2, sq6SlowTransitionPatch2 },
{ true, 15, "invalid array construction", 1, sci21IntArraySignature, sci21IntArrayPatch },
{ true, 22, "invalid array construction", 1, sci21IntArraySignature, sci21IntArrayPatch },
{ true, 410, "fix slow transitions", 1, sq6SlowTransitionSignature2, sq6SlowTransitionPatch2 },
{ true, 460, "invalid array construction", 1, sci21IntArraySignature, sci21IntArrayPatch },
{ true, 500, "fix slow transitions", 1, sq6SlowTransitionSignature1, sq6SlowTransitionPatch1 },
{ true, 510, "invalid array construction", 1, sci21IntArraySignature, sci21IntArrayPatch },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature1, sci2NumSavesPatch1 },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature2, sci2NumSavesPatch2 },
{ true, 64990, "disable change directory button", 1, sci2ChangeDirSignature, sci2ChangeDirPatch },
SCI_SIGNATUREENTRY_TERMINATOR
};
#pragma mark -
#pragma mark Torins Passage
// The init code that runs when Torin starts up unconditionally resets the
// master music volume to defaults, but the game should always use the volume
// stored in ScummVM.
// Applies to at least: English CD
static const uint16 torinVolumeResetSignature1[] = {
SIG_MAGICDWORD,
0x35, 0x28, // ldi $28
0xa1, 0xe3, // sag $e3 (music volume)
0x35, 0x3c, // ldi $3c
0xa1, 0xe4, // sag $e4 (sfx volume)
0x35, 0x64, // ldi $64
0xa1, 0xe5, // sag $e5 (speech volume)
SIG_END
};
static const uint16 torinVolumeResetPatch1[] = {
0x33, 0x0a, // jmp [past volume resets]
PATCH_END
};
// The init code that runs when Torin starts up unconditionally resets the
// master music volume to values stored in torin.prf, but the game should always
// use the volume stored in ScummVM.
// Applies to at least: English CD
static const uint16 torinVolumeResetSignature2[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x20b), // pushi $020b
0x76, // push0
SIG_ADDTOOFFSET(6), // advance file stream
0xa1, 0xe3, // sag $e3 (music volume)
SIG_ADDTOOFFSET(10), // advance file stream
0xa1, 0xe4, // sag $e4 (sfx volume)
SIG_ADDTOOFFSET(10), // advance file stream
0xa1, 0xe5, // sag $e5 (speech volume)
SIG_END
};
static const uint16 torinVolumeResetPatch2[] = {
PATCH_ADDTOOFFSET(10), // advance file stream
0x18, 0x18, // waste bytes
PATCH_ADDTOOFFSET(10), // advance file stream
0x18, 0x18, // waste bytes
PATCH_ADDTOOFFSET(10), // advance file stream
0x18, 0x18, // waste bytes
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry torinSignatures[] = {
{ true, 64000, "disable volume reset on startup 1/2", 1, torinVolumeResetSignature1, torinVolumeResetPatch1 },
{ true, 64000, "disable volume reset on startup 2/2", 1, torinVolumeResetSignature2, torinVolumeResetPatch2 },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature1, sci2NumSavesPatch1 },
{ true, 64990, "increase number of save games", 1, sci2NumSavesSignature2, sci2NumSavesPatch2 },
SCI_SIGNATUREENTRY_TERMINATOR
};
#endif
// =================================================================================
ScriptPatcher::ScriptPatcher() {
int selectorCount = ARRAYSIZE(selectorNameTable);
int selectorNr;
// Allocate table for selector-IDs and initialize that table as well
_selectorIdTable = new Selector[ selectorCount ];
for (selectorNr = 0; selectorNr < selectorCount; selectorNr++)
_selectorIdTable[selectorNr] = -1;
_runtimeTable = NULL;
_isMacSci11 = false;
}
ScriptPatcher::~ScriptPatcher() {
delete[] _runtimeTable;
delete[] _selectorIdTable;
}
// will actually patch previously found signature area
void ScriptPatcher::applyPatch(const SciScriptPatcherEntry *patchEntry, SciSpan<byte> scriptData, int32 signatureOffset) {
const uint16 *patchData = patchEntry->patchData;
byte orgData[PATCH_VALUELIMIT];
int32 offset = signatureOffset;
uint16 patchWord = *patchEntry->patchData;
uint16 patchSelector = 0;
// Copy over original bytes from script
uint32 orgDataSize = scriptData.size() - offset;
if (orgDataSize > PATCH_VALUELIMIT)
orgDataSize = PATCH_VALUELIMIT;
scriptData.subspan(offset, orgDataSize).unsafeCopyDataTo(orgData);
while (patchWord != PATCH_END) {
uint16 patchCommand = patchWord & PATCH_COMMANDMASK;
uint16 patchValue = patchWord & PATCH_VALUEMASK;
switch (patchCommand) {
case PATCH_CODE_ADDTOOFFSET: {
// add value to offset
offset += patchValue;
break;
}
case PATCH_CODE_GETORIGINALBYTE: {
// get original byte from script and adjust it
if (patchValue >= orgDataSize)
error("Script-Patcher: can not get requested original byte from script");
byte orgByte = orgData[patchValue];
int16 adjustValue;
patchData++; adjustValue = (int16)(*patchData);
scriptData[offset] = orgByte + adjustValue;
offset++;
break;
}
case PATCH_CODE_GETORIGINALUINT16: {
// get original byte from script and adjust it
if ((patchValue >= orgDataSize) || (((uint32)patchValue + 1) >= orgDataSize))
error("Script-Patcher: can not get requested original uint16 from script");
uint16 orgUINT16;
int16 adjustValue;
if (!_isMacSci11) {
orgUINT16 = orgData[patchValue] | (orgData[patchValue + 1] << 8);
} else {
orgUINT16 = orgData[patchValue + 1] | (orgData[patchValue] << 8);
}
patchData++; adjustValue = (int16)(*patchData);
orgUINT16 += adjustValue;
if (!_isMacSci11) {
scriptData[offset] = orgUINT16 & 0xFF;
scriptData[offset + 1] = orgUINT16 >> 8;
} else {
scriptData[offset] = orgUINT16 >> 8;
scriptData[offset + 1] = orgUINT16 & 0xFF;
}
offset += 2;
break;
}
case PATCH_CODE_UINT16:
case PATCH_CODE_SELECTOR16: {
byte byte1;
byte byte2;
switch (patchCommand) {
case PATCH_CODE_UINT16: {
byte1 = patchValue & PATCH_BYTEMASK;
patchData++; patchWord = *patchData;
if (patchWord & PATCH_COMMANDMASK)
error("Script-Patcher: Patch inconsistent");
byte2 = patchWord & PATCH_BYTEMASK;
break;
}
case PATCH_CODE_SELECTOR16: {
patchSelector = _selectorIdTable[patchValue];
byte1 = patchSelector & 0xFF;
byte2 = patchSelector >> 8;
break;
}
default:
byte1 = 0; byte2 = 0;
}
if (!_isMacSci11) {
scriptData[offset++] = byte1;
scriptData[offset++] = byte2;
} else {
// SCI1.1+ on macintosh had uint16s in script in BE-order
scriptData[offset++] = byte2;
scriptData[offset++] = byte1;
}
break;
}
case PATCH_CODE_SELECTOR8: {
patchSelector = _selectorIdTable[patchValue];
if (patchSelector & 0xFF00)
error("Script-Patcher: 8 bit selector required, game uses 16 bit selector");
scriptData[offset] = patchSelector & 0xFF;
offset++;
break;
}
case PATCH_CODE_BYTE:
scriptData[offset] = patchValue & PATCH_BYTEMASK;
offset++;
}
patchData++;
patchWord = *patchData;
}
}
bool ScriptPatcher::verifySignature(uint32 byteOffset, const uint16 *signatureData, const char *signatureDescription, const SciSpan<const byte> &scriptData) {
uint16 sigSelector = 0;
uint16 sigWord = *signatureData;
while (sigWord != SIG_END) {
uint16 sigCommand = sigWord & SIG_COMMANDMASK;
uint16 sigValue = sigWord & SIG_VALUEMASK;
switch (sigCommand) {
case SIG_CODE_ADDTOOFFSET: {
// add value to offset
byteOffset += sigValue;
break;
}
case SIG_CODE_UINT16:
case SIG_CODE_SELECTOR16: {
if (byteOffset + 1 < scriptData.size()) {
byte byte1;
byte byte2;
switch (sigCommand) {
case SIG_CODE_UINT16: {
byte1 = sigValue & SIG_BYTEMASK;
signatureData++; sigWord = *signatureData;
if (sigWord & SIG_COMMANDMASK)
error("Script-Patcher: signature inconsistent\nFaulty signature: '%s'", signatureDescription);
byte2 = sigWord & SIG_BYTEMASK;
break;
}
case SIG_CODE_SELECTOR16: {
sigSelector = _selectorIdTable[sigValue];
byte1 = sigSelector & 0xFF;
byte2 = sigSelector >> 8;
break;
}
default:
byte1 = 0; byte2 = 0;
}
if (!_isMacSci11) {
if ((scriptData[byteOffset] != byte1) || (scriptData[byteOffset + 1] != byte2))
sigWord = SIG_MISMATCH;
} else {
// SCI1.1+ on macintosh had uint16s in script in BE-order
if ((scriptData[byteOffset] != byte2) || (scriptData[byteOffset + 1] != byte1))
sigWord = SIG_MISMATCH;
}
byteOffset += 2;
} else {
sigWord = SIG_MISMATCH;
}
break;
}
case SIG_CODE_SELECTOR8: {
if (byteOffset < scriptData.size()) {
sigSelector = _selectorIdTable[sigValue];
if (sigSelector & 0xFF00)
error("Script-Patcher: 8 bit selector required, game uses 16 bit selector\nFaulty signature: '%s'", signatureDescription);
if (scriptData[byteOffset] != (sigSelector & 0xFF))
sigWord = SIG_MISMATCH;
byteOffset++;
} else {
sigWord = SIG_MISMATCH; // out of bounds
}
break;
}
case SIG_CODE_BYTE:
if (byteOffset < scriptData.size()) {
if (scriptData[byteOffset] != sigWord)
sigWord = SIG_MISMATCH;
byteOffset++;
} else {
sigWord = SIG_MISMATCH; // out of bounds
}
}
if (sigWord == SIG_MISMATCH)
break;
signatureData++;
sigWord = *signatureData;
}
if (sigWord == SIG_END) // signature fully matched?
return true;
return false;
}
// will return -1 if no match was found, otherwise an offset to the start of the signature match
int32 ScriptPatcher::findSignature(uint32 magicDWord, int magicOffset, const uint16 *signatureData, const char *patchDescription, const SciSpan<const byte> &scriptData) {
if (scriptData.size() < 4) // we need to find a DWORD, so less than 4 bytes is not okay
return -1;
// magicDWord is in platform-specific BE/LE form, so that the later match will work, this was done for performance
const uint32 searchLimit = scriptData.size() - 3;
uint32 DWordOffset = 0;
// first search for the magic DWORD
while (DWordOffset < searchLimit) {
if (magicDWord == scriptData.getUint32At(DWordOffset)) {
// magic DWORD found, check if actual signature matches
uint32 offset = DWordOffset + magicOffset;
if (verifySignature(offset, signatureData, patchDescription, scriptData))
return offset;
}
DWordOffset++;
}
// nothing found
return -1;
}
int32 ScriptPatcher::findSignature(const SciScriptPatcherEntry *patchEntry, const SciScriptPatcherRuntimeEntry *runtimeEntry, const SciSpan<const byte> &scriptData) {
return findSignature(runtimeEntry->magicDWord, runtimeEntry->magicOffset, patchEntry->signatureData, patchEntry->description, scriptData);
}
// Attention: Magic DWord is returned using platform specific byte order. This is done on purpose for performance.
void ScriptPatcher::calculateMagicDWordAndVerify(const char *signatureDescription, const uint16 *signatureData, bool magicDWordIncluded, uint32 &calculatedMagicDWord, int &calculatedMagicDWordOffset) {
Selector curSelector = -1;
int magicOffset;
byte magicDWord[4];
int magicDWordLeft = 0;
uint16 curWord;
uint16 curCommand;
uint32 curValue;
byte byte1 = 0;
byte byte2 = 0;
memset(magicDWord, 0, sizeof(magicDWord));
curWord = *signatureData;
magicOffset = 0;
while (curWord != SIG_END) {
curCommand = curWord & SIG_COMMANDMASK;
curValue = curWord & SIG_VALUEMASK;
switch (curCommand) {
case SIG_MAGICDWORD: {
if (magicDWordIncluded) {
if ((calculatedMagicDWord) || (magicDWordLeft))
error("Script-Patcher: Magic-DWORD specified multiple times in signature\nFaulty patch: '%s'", signatureDescription);
magicDWordLeft = 4;
calculatedMagicDWordOffset = magicOffset;
} else {
error("Script-Patcher: Magic-DWORD sequence found in patch data\nFaulty patch: '%s'", signatureDescription);
}
break;
}
case SIG_CODE_ADDTOOFFSET: {
magicOffset -= curValue;
if (magicDWordLeft)
error("Script-Patcher: Magic-DWORD contains AddToOffset command\nFaulty patch: '%s'", signatureDescription);
break;
}
case SIG_CODE_UINT16:
case SIG_CODE_SELECTOR16: {
// UINT16 or 1
switch (curCommand) {
case SIG_CODE_UINT16: {
signatureData++; curWord = *signatureData;
if (curWord & SIG_COMMANDMASK)
error("Script-Patcher: signature entry inconsistent\nFaulty patch: '%s'", signatureDescription);
if (!_isMacSci11) {
byte1 = curValue;
byte2 = curWord & SIG_BYTEMASK;
} else {
byte1 = curWord & SIG_BYTEMASK;
byte2 = curValue;
}
break;
}
case SIG_CODE_SELECTOR16: {
curSelector = _selectorIdTable[curValue];
if (curSelector == -1) {
curSelector = g_sci->getKernel()->findSelector(selectorNameTable[curValue]);
_selectorIdTable[curValue] = curSelector;
}
if (!_isMacSci11) {
byte1 = curSelector & 0x00FF;
byte2 = curSelector >> 8;
} else {
byte1 = curSelector >> 8;
byte2 = curSelector & 0x00FF;
}
break;
}
}
magicOffset -= 2;
if (magicDWordLeft) {
// Remember current word for Magic DWORD
magicDWord[4 - magicDWordLeft] = byte1;
magicDWordLeft--;
if (magicDWordLeft) {
magicDWord[4 - magicDWordLeft] = byte2;
magicDWordLeft--;
}
if (!magicDWordLeft) {
// Magic DWORD is now known, convert to platform specific byte order
calculatedMagicDWord = READ_UINT32(magicDWord);
}
}
break;
}
case SIG_CODE_BYTE:
case SIG_CODE_SELECTOR8: {
if (curCommand == SIG_CODE_SELECTOR8) {
curSelector = _selectorIdTable[curValue];
if (curSelector == -1) {
curSelector = g_sci->getKernel()->findSelector(selectorNameTable[curValue]);
_selectorIdTable[curValue] = curSelector;
if (curSelector != -1) {
if (curSelector & 0xFF00)
error("Script-Patcher: 8 bit selector required, game uses 16 bit selector\nFaulty patch: '%s'", signatureDescription);
}
}
curValue = curSelector;
}
magicOffset--;
if (magicDWordLeft) {
// Remember current byte for Magic DWORD
magicDWord[4 - magicDWordLeft] = (byte)curValue;
magicDWordLeft--;
if (!magicDWordLeft) {
// Magic DWORD is now known, convert to platform specific byte order
calculatedMagicDWord = READ_UINT32(magicDWord);
}
}
break;
}
case PATCH_CODE_GETORIGINALBYTE:
case PATCH_CODE_GETORIGINALUINT16: {
signatureData++; // skip over extra uint16
break;
}
default:
break;
}
signatureData++;
curWord = *signatureData;
}
if (magicDWordLeft)
error("Script-Patcher: Magic-DWORD beyond End-Of-Signature\nFaulty patch: '%s'", signatureDescription);
if (magicDWordIncluded) {
if (!calculatedMagicDWord) {
error("Script-Patcher: Magic-DWORD not specified in signature\nFaulty patch: '%s'", signatureDescription);
}
}
}
// This method calculates the magic DWORD for each entry in the signature table
// and it also initializes the selector table for selectors used in the signatures/patches of the current game
void ScriptPatcher::initSignature(const SciScriptPatcherEntry *patchTable) {
const SciScriptPatcherEntry *curEntry = patchTable;
SciScriptPatcherRuntimeEntry *curRuntimeEntry;
int patchEntryCount = 0;
// Count entries and allocate runtime data
while (curEntry->signatureData) {
patchEntryCount++; curEntry++;
}
_runtimeTable = new SciScriptPatcherRuntimeEntry[patchEntryCount];
memset(_runtimeTable, 0, sizeof(SciScriptPatcherRuntimeEntry) * patchEntryCount);
curEntry = patchTable;
curRuntimeEntry = _runtimeTable;
while (curEntry->signatureData) {
// process signature
curRuntimeEntry->active = curEntry->defaultActive;
curRuntimeEntry->magicDWord = 0;
curRuntimeEntry->magicOffset = 0;
// We verify the signature data and remember the calculated magic DWord from the signature data
calculateMagicDWordAndVerify(curEntry->description, curEntry->signatureData, true, curRuntimeEntry->magicDWord, curRuntimeEntry->magicOffset);
// We verify the patch data
calculateMagicDWordAndVerify(curEntry->description, curEntry->patchData, false, curRuntimeEntry->magicDWord, curRuntimeEntry->magicOffset);
curEntry++; curRuntimeEntry++;
}
}
// This method enables certain patches
// It's used for patches, which are not meant to get applied all the time
void ScriptPatcher::enablePatch(const SciScriptPatcherEntry *patchTable, const char *searchDescription) {
const SciScriptPatcherEntry *curEntry = patchTable;
SciScriptPatcherRuntimeEntry *runtimeEntry = _runtimeTable;
int searchDescriptionLen = strlen(searchDescription);
int matchCount = 0;
while (curEntry->signatureData) {
if (strncmp(curEntry->description, searchDescription, searchDescriptionLen) == 0) {
// match found, enable patch
runtimeEntry->active = true;
matchCount++;
}
curEntry++; runtimeEntry++;
}
if (!matchCount)
error("Script-Patcher: no patch found to enable");
}
void ScriptPatcher::processScript(uint16 scriptNr, SciSpan<byte> scriptData) {
const SciScriptPatcherEntry *signatureTable = NULL;
const SciScriptPatcherEntry *curEntry = NULL;
SciScriptPatcherRuntimeEntry *curRuntimeEntry = NULL;
const Sci::SciGameId gameId = g_sci->getGameId();
switch (gameId) {
case GID_CAMELOT:
signatureTable = camelotSignatures;
break;
case GID_ECOQUEST:
signatureTable = ecoquest1Signatures;
break;
case GID_ECOQUEST2:
signatureTable = ecoquest2Signatures;
break;
case GID_FANMADE:
signatureTable = fanmadeSignatures;
break;
case GID_FREDDYPHARKAS:
signatureTable = freddypharkasSignatures;
break;
#ifdef ENABLE_SCI32
case GID_HOYLE5:
signatureTable = hoyle5Signatures;
break;
case GID_GK1:
signatureTable = gk1Signatures;
break;
case GID_GK2:
signatureTable = gk2Signatures;
break;
#endif
case GID_KQ5:
signatureTable = kq5Signatures;
break;
case GID_KQ6:
signatureTable = kq6Signatures;
break;
#ifdef ENABLE_SCI32
case GID_KQ7:
signatureTable = kq7Signatures;
break;
#endif
case GID_LAURABOW:
signatureTable = laurabow1Signatures;
break;
case GID_LAURABOW2:
signatureTable = laurabow2Signatures;
break;
case GID_LONGBOW:
signatureTable = longbowSignatures;
break;
case GID_LSL2:
signatureTable = larry2Signatures;
break;
case GID_LSL5:
signatureTable = larry5Signatures;
break;
case GID_LSL6:
signatureTable = larry6Signatures;
break;
#ifdef ENABLE_SCI32
case GID_LSL6HIRES:
signatureTable = larry6HiresSignatures;
break;
#endif
case GID_MOTHERGOOSE256:
signatureTable = mothergoose256Signatures;
break;
#ifdef ENABLE_SCI32
case GID_MOTHERGOOSEHIRES:
signatureTable = mothergooseHiresSignatures;
break;
case GID_PHANTASMAGORIA:
signatureTable = phantasmagoriaSignatures;
break;
#endif
case GID_PQ1:
signatureTable = pq1vgaSignatures;
break;
#ifdef ENABLE_SCI32
case GID_PQ4:
signatureTable = pq4Signatures;
break;
case GID_PQSWAT:
signatureTable = pqSwatSignatures;
break;
#endif
case GID_QFG1:
signatureTable = qfg1egaSignatures;
break;
case GID_QFG1VGA:
signatureTable = qfg1vgaSignatures;
break;
case GID_QFG2:
signatureTable = qfg2Signatures;
break;
case GID_QFG3:
signatureTable = qfg3Signatures;
break;
#ifdef ENABLE_SCI32
case GID_QFG4:
signatureTable = qfg4Signatures;
break;
case GID_SHIVERS:
signatureTable = shiversSignatures;
break;
#endif
case GID_SQ1:
signatureTable = sq1vgaSignatures;
break;
case GID_SQ4:
signatureTable = sq4Signatures;
break;
case GID_SQ5:
signatureTable = sq5Signatures;
break;
#ifdef ENABLE_SCI32
case GID_SQ6:
signatureTable = sq6Signatures;
break;
case GID_TORIN:
signatureTable = torinSignatures;
break;
#endif
default:
break;
}
if (signatureTable) {
_isMacSci11 = (g_sci->getPlatform() == Common::kPlatformMacintosh && getSciVersion() >= SCI_VERSION_1_1);
if (!_runtimeTable) {
// Abort, in case selectors are not yet initialized (happens for games w/o selector-dictionary)
if (!g_sci->getKernel()->selectorNamesAvailable())
return;
// signature table needs to get initialized (Magic DWORD set, selector table set)
initSignature(signatureTable);
// Do additional game-specific initialization
switch (gameId) {
case GID_KQ5:
if (g_sci->_features->useAltWinGMSound()) {
// See the explanation in the kq5SignatureWinGMSignals comment
enablePatch(signatureTable, "Win: GM Music signal checks");
}
break;
case GID_KQ6:
if (g_sci->isCD()) {
// Enables Dual mode patches (audio + subtitles at the same time) for King's Quest 6
enablePatch(signatureTable, "CD: audio + text support");
}
break;
case GID_LAURABOW2:
if (g_sci->isCD()) {
// Enables Dual mode patches (audio + subtitles at the same time) for Laura Bow 2
enablePatch(signatureTable, "CD: audio + text support");
}
break;
default:
break;
}
}
curEntry = signatureTable;
curRuntimeEntry = _runtimeTable;
while (curEntry->signatureData) {
if ((scriptNr == curEntry->scriptNr) && (curRuntimeEntry->active)) {
int32 foundOffset = 0;
int16 applyCount = curEntry->applyCount;
do {
foundOffset = findSignature(curEntry, curRuntimeEntry, scriptData);
if (foundOffset != -1) {
// found, so apply the patch
debugC(kDebugLevelScriptPatcher, "Script-Patcher: '%s' on script %d offset %d", curEntry->description, scriptNr, foundOffset);
applyPatch(curEntry, scriptData, foundOffset);
}
applyCount--;
} while ((foundOffset != -1) && (applyCount));
}
curEntry++; curRuntimeEntry++;
}
}
}
} // End of namespace Sci
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