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4abfb1f73c
scummvm/scumm/object.cpp
Torbjörn Andersson 4abfb1f73c Bypass the Maniac Mansion copy protection by making the security door stay 
open at all times, like some original versions did. This still leaves the
player the option of blowing the mansion up by entering the wrong code.

I still don't know if it has any unforseen side-effects.

svn-id: r8517
2003-06-16 14:45:23 +00:00

1688 lines
42 KiB
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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2003 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "scumm.h"
#include "actor.h"
#include "bomp.h"
#include "object.h"
#include "resource.h"
#include "usage_bits.h"
#if !defined(__GNUC__)
#pragma START_PACK_STRUCTS
#endif
struct BompHeader { /* Bomp header */
union {
struct {
uint16 unk;
uint16 width, height;
} GCC_PACK old;
struct {
uint32 width, height;
} GCC_PACK v8;
} GCC_PACK;
} GCC_PACK;
#if !defined(__GNUC__)
#pragma END_PACK_STRUCTS
#endif
bool Scumm::getClass(int obj, int cls)
{
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getClass");
cls &= 0x7F;
checkRange(32, 1, cls, "Class %d out of range in getClass");
if (_features & GF_SMALL_HEADER) {
// Translate the new (V5) object classes to the old classes
// (for those which differ).
switch (cls) {
case kObjectClassUntouchable:
cls = 24;
break;
case kObjectClassPlayer:
cls = 23;
break;
case kObjectClassXFlip:
cls = 19;
break;
case kObjectClassYFlip:
cls = 18;
break;
}
}
return (_classData[obj] & (1 << (cls - 1))) != 0;
}
void Scumm::putClass(int obj, int cls, bool set)
{
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in putClass");
cls &= 0x7F;
checkRange(32, 1, cls, "Class %d out of range in putClass");
if (_features & GF_SMALL_HEADER) {
// Translate the new (V5) object classes to the old classes
// (for those which differ).
switch (cls) {
case kObjectClassUntouchable:
cls = 24;
break;
case kObjectClassPlayer:
cls = 23;
break;
case kObjectClassXFlip:
cls = 19;
break;
case kObjectClassYFlip:
cls = 18;
break;
}
}
// FIXME: It isn't enough for the Indy3 intro to make the
// little trains ignore boxes, they have to always clip as
// well. Is this yet another walkbox 0 error?
if (_gameId == GID_INDY3_256 && cls == kObjectClassIgnoreBoxes && _currentRoom == 76)
putClass(obj, kObjectClassAlwaysClip, set);
if (set)
_classData[obj] |= (1 << (cls - 1));
else
_classData[obj] &= ~(1 << (cls - 1));
if (1 <= obj && obj < _numActors) {
_actors[obj].classChanged(cls, set);
}
}
int Scumm::getOwner(int obj) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getOwner");
return _objectOwnerTable[obj];
}
void Scumm::putOwner(int obj, int owner) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in putOwner");
checkRange(0xFF, 0, owner, "Owner %d out of range in putOwner");
_objectOwnerTable[obj] = owner;
}
#ifndef BYPASS_COPY_PROT
#define BYPASS_COPY_PROT
#endif
int Scumm::getState(int obj) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getState");
#if defined(BYPASS_COPY_PROT)
// I knew LucasArts sold cracked copies of the original Maniac Mansion,
// at least as part of Day of the Tentacle. Apparently they also sold
// cracked versions of the enhanced version. At least in Germany.
//
// This will keep the security door open at all times. I can only
// assume that 182 and 193 each correspond to one particular side of
// the it. Fortunately it does not prevent frustrated players from
// blowing up the mansion, should they feel the urge to.
if (_gameId == GID_MANIAC && (obj == 182 || obj == 193))
_objectStateTable[obj] |= 0x08;
#endif
return _objectStateTable[obj];
}
void Scumm::putState(int obj, int state) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in putState");
checkRange(0xFF, 0, state, "State %d out of range in putState");
_objectStateTable[obj] = state;
}
int Scumm::getObjectRoom(int obj) {
checkRange(_numGlobalObjects - 1, 0, obj, "Object %d out of range in getObjectRoom");
return _objectRoomTable[obj];
}
int Scumm::getObjectIndex(int object) {
int i;
if (object < 1)
return -1;
for (i = (_numLocalObjects-1); i > 0; i--) {
if (_objs[i].obj_nr == object)
return i;
}
return -1;
}
int Scumm::whereIsObject(int object) {
int i;
if (object >= _numGlobalObjects)
return WIO_NOT_FOUND;
if (object < 1)
return WIO_NOT_FOUND;
if (_objectOwnerTable[object] != OF_OWNER_ROOM) {
for (i = 0; i < _maxInventoryItems; i++)
if (_inventory[i] == object)
return WIO_INVENTORY;
return WIO_NOT_FOUND;
}
for (i = (_numLocalObjects-1); i > 0; i--)
if (_objs[i].obj_nr == object) {
if (_objs[i].fl_object_index)
return WIO_FLOBJECT;
return WIO_ROOM;
}
return WIO_NOT_FOUND;
}
int Scumm::getObjectOrActorXY(int object, int &x, int &y) {
if (object < _numActors) {
Actor *act = derefActorSafe(object, "getObjectOrActorXY");
if (!act)
return 0;
else
return act->getActorXYPos(x, y);
}
switch (whereIsObject(object)) {
case WIO_NOT_FOUND:
return -1;
case WIO_INVENTORY:
if (_objectOwnerTable[object] < _numActors)
return derefActorSafe(_objectOwnerTable[object], "getObjectOrActorXY(2)")->getActorXYPos(x, y);
else
return 0xFF;
}
getObjectXYPos(object, x, y);
return 0;
}
/**
* Return the position of an object.
* Returns X, Y and direction in angles
*/
void Scumm::getObjectXYPos(int object, int &x, int &y, int &dir) {
ObjectData *od = &_objs[getObjectIndex(object)];
int state;
const byte *ptr;
const ImageHeader *imhd;
if (_version >= 6) {
state = getState(object) - 1;
if (state < 0)
state = 0;
if (od->fl_object_index) {
ptr = getResourceAddress(rtFlObject, od->fl_object_index);
ptr = findResource(MKID('OBIM'), ptr);
} else {
ptr = getResourceAddress(rtRoom, _roomResource);
ptr += od->OBIMoffset;
}
if (!ptr) {
// FIXME: We used to assert here, but it seems that in the nexus
// in The Dig, this can happen, at least with old savegames, and
// it's safe to continue...
warning("getObjectXYPos: Can't find object %d", object);
return;
}
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), ptr);
if (_version == 8) {
x = od->x_pos + (int32)READ_LE_UINT32(&imhd->v8.hotspot[state].x);
y = od->y_pos + (int32)READ_LE_UINT32(&imhd->v8.hotspot[state].y);
} else if (_version == 7) {
x = od->x_pos + (int16)READ_LE_UINT16(&imhd->v7.hotspot[state].x);
y = od->y_pos + (int16)READ_LE_UINT16(&imhd->v7.hotspot[state].y);
} else {
x = od->x_pos + (int16)READ_LE_UINT16(&imhd->old.hotspot[state].x);
y = od->y_pos + (int16)READ_LE_UINT16(&imhd->old.hotspot[state].y);
}
} else {
x = od->walk_x;
y = od->walk_y;
}
if (_version == 8)
dir = fromSimpleDir(1, od->actordir);
else
dir = oldDirToNewDir(od->actordir & 3);
}
int Scumm::getObjActToObjActDist(int a, int b) {
int x, y, x2, y2;
Actor *acta = NULL;
Actor *actb = NULL;
if (a < _numActors)
acta = derefActorSafe(a, "getObjActToObjActDist");
if (b < _numActors)
actb = derefActorSafe(b, "getObjActToObjActDist(2)");
if (acta && actb && acta->getRoom() == actb->getRoom() && acta->getRoom() && !acta->isInCurrentRoom())
return 0;
if (getObjectOrActorXY(a, x, y) == -1)
return 0xFF;
if (getObjectOrActorXY(b, x2, y2) == -1)
return 0xFF;
if (acta) {
AdjustBoxResult r = acta->adjustXYToBeInBox(x2, y2);
x2 = r.x;
y2 = r.y;
}
y = abs(y - y2);
x = abs(x - x2);
if (y > x)
x = y;
return (_version <= 2) ? x / 8 : x;
}
int Scumm::findObject(int x, int y) {
int i, b;
byte a;
const int mask = (_version <= 2) ? 0x8 : 0xF;
for (i = 1; i < _numLocalObjects; i++) {
if ((_objs[i].obj_nr < 1) || getClass(_objs[i].obj_nr, kObjectClassUntouchable))
continue;
if ((_version <= 2) && _objs[i].state & 0x2)
continue;
b = i;
do {
a = _objs[b].parentstate;
b = _objs[b].parent;
if (b == 0) {
if (_objs[i].x_pos <= x && _objs[i].width + _objs[i].x_pos > x &&
_objs[i].y_pos <= y && _objs[i].height + _objs[i].y_pos > y)
return _objs[i].obj_nr;
break;
}
} while ((_objs[b].state & mask) == a);
}
return 0;
}
void Scumm::drawRoomObject(int i, int arg) {
ObjectData *od;
byte a;
const int mask = (_version <= 2) ? 0x8 : 0xF;
od = &_objs[i];
if ((i < 1) || (od->obj_nr < 1) || !od->state)
return;
do {
a = od->parentstate;
if (!od->parent) {
drawObject(i, arg);
break;
}
od = &_objs[od->parent];
} while ((od->state & mask) == a);
}
void Scumm::drawRoomObjects(int arg) {
int i;
const int mask = (_version <= 2) ? 0x8 : 0xF;
if (_features & GF_DRAWOBJ_OTHER_ORDER) {
for (i = 1; i < _numLocalObjects; i++)
if (_objs[i].obj_nr > 0)
drawRoomObject(i, arg);
} else {
for (i = (_numLocalObjects-1); i > 0; i--)
if (_objs[i].obj_nr > 0 && (_objs[i].state & mask)) {
drawRoomObject(i, arg);
}
}
}
static const uint32 IMxx_tags[] = {
MKID('IM00'),
MKID('IM01'),
MKID('IM02'),
MKID('IM03'),
MKID('IM04'),
MKID('IM05'),
MKID('IM06'),
MKID('IM07'),
MKID('IM08'),
MKID('IM09'),
MKID('IM0A'),
MKID('IM0B'),
MKID('IM0C'),
MKID('IM0D'),
MKID('IM0E'),
MKID('IM0F')
};
void Scumm::drawObject(int obj, int arg) {
ObjectData *od;
int xpos, ypos, height, width;
const byte *ptr;
int x, a, numstrip;
int tmp;
if (_BgNeedsRedraw)
arg = 0;
od = &_objs[obj];
if (od->obj_nr == 0)
return;
checkRange(_numGlobalObjects - 1, 0, od->obj_nr, "Object %d out of range in drawObject");
xpos = od->x_pos >> 3;
ypos = od->y_pos;
width = od->width >> 3;
height = od->height &= 0xFFFFFFF8; // Mask out last 3 bits
if (width == 0 || xpos > _screenEndStrip || xpos + width < _screenStartStrip)
return;
if (od->fl_object_index) {
ptr = getResourceAddress(rtFlObject, od->fl_object_index);
ptr = findResource(MKID('OBIM'), ptr);
} else {
ptr = getResourceAddress(rtRoom, _roomResource);
ptr = ptr + od->OBIMoffset;
}
if (_features & GF_OLD_BUNDLE)
ptr += 0;
else if (_features & GF_SMALL_HEADER)
ptr += 8;
else if (_version == 8) {
ptr = findResource(MKID('IMAG'), ptr);
if (!ptr)
return;
ptr = findResource(MKID('WRAP'), ptr);
assert(ptr);
ptr = findResource(MKID('OFFS'), ptr);
assert(ptr);
// Get the address of the specified SMAP (corresponding to IMxx)
ptr += READ_LE_UINT32(ptr + 4 + 4*getState(od->obj_nr));
} else
ptr = findResource(IMxx_tags[getState(od->obj_nr)], ptr);
if (!ptr)
return;
x = 0xFFFF;
for (a = numstrip = 0; a < width; a++) {
tmp = xpos + a;
if (arg == 1 && _screenStartStrip != tmp)
continue;
if (arg == 2 && _screenEndStrip != tmp)
continue;
if (tmp < _screenStartStrip || tmp > _screenEndStrip)
continue;
setGfxUsageBit(tmp, USAGE_BIT_DIRTY);
if (tmp < x)
x = tmp;
numstrip++;
}
if (numstrip != 0) {
byte flags = Gdi::dbAllowMaskOr;
if (_version == 1) {
gdi._C64ObjectMode = true;
gdi.decodeC64Gfx(ptr, gdi._C64ObjectMap, width * (height >> 3) * 3);
}
// Sam & Max needs this to fix object-layering problems with
// the inventory and conversation icons.
if ((_version >= 7 || _gameId == GID_SAMNMAX) && getClass(od->obj_nr, kObjectClassIgnoreBoxes))
flags |= Gdi::dbDrawMaskOnAll;
gdi.drawBitmap(ptr, &virtscr[0], x, ypos, width << 3, height, x - xpos, numstrip, flags);
}
}
void Scumm::clearRoomObjects() {
int i;
if (_features & GF_SMALL_HEADER) {
for (i = 0; i < _numLocalObjects; i++) {
_objs[i].obj_nr = 0;
}
} else {
// FIXME: Locking/FlObjects stuff?
for (i = 0; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr < 1) // Optimise codepath
continue;
// Nuke all non-flObjects (flObjects are nuked in script.cpp)
if (_objs[i].fl_object_index == 0) {
_objs[i].obj_nr = 0;
} else {
// Nuke all unlocked flObjects
if (!(res.flags[rtFlObject][_objs[i].fl_object_index] & RF_LOCK)) {
nukeResource(rtFlObject, _objs[i].fl_object_index);
_objs[i].obj_nr = 0;
_objs[i].fl_object_index = 0;
}
}
}
}
}
void Scumm::loadRoomObjects() {
int i, j;
ObjectData *od;
const byte *ptr;
uint16 obim_id;
const byte *room, *searchptr, *rootptr;
const ImageHeader *imhd;
const RoomHeader *roomhdr;
const CodeHeader *cdhd;
CHECK_HEAP
room = getResourceAddress(rtRoom, _roomResource);
roomhdr = (const RoomHeader *)findResourceData(MKID('RMHD'), room);
if (_version == 8)
_numObjectsInRoom = (byte)READ_LE_UINT32(&(roomhdr->v8.numObjects));
else if (_version == 7)
_numObjectsInRoom = READ_LE_UINT16(&(roomhdr->v7.numObjects));
else
_numObjectsInRoom = READ_LE_UINT16(&(roomhdr->old.numObjects));
if (_numObjectsInRoom == 0)
return;
if (_numObjectsInRoom > _numLocalObjects)
error("More than %d objects in room %d", _numLocalObjects, _roomResource);
if (_version == 8)
searchptr = rootptr = getResourceAddress(rtRoomScripts, _roomResource);
else
searchptr = rootptr = room;
assert(searchptr);
// Load in new room objects
for (i = 0; i < _numObjectsInRoom; i++) {
od = &_objs[findLocalObjectSlot()];
ptr = findResource(MKID('OBCD'), searchptr);
if (ptr == NULL)
error("Room %d missing object code block(s)", _roomResource);
od->OBCDoffset = ptr - rootptr;
cdhd = (const CodeHeader *)findResourceData(MKID('CDHD'), ptr);
if (_version >= 7)
od->obj_nr = READ_LE_UINT16(&(cdhd->v7.obj_id));
else if (_version == 6)
od->obj_nr = READ_LE_UINT16(&(cdhd->v6.obj_id));
else
od->obj_nr = READ_LE_UINT16(&(cdhd->v5.obj_id));
if (_dumpScripts) {
char buf[32];
sprintf(buf, "roomobj-%d-", _roomResource);
ptr = findResource(MKID('VERB'), ptr, 0);
dumpResource(buf, od->obj_nr, ptr);
}
searchptr = NULL;
}
searchptr = room;
for (i = 0; i < _numObjectsInRoom; i++) {
ptr = findResource(MKID('OBIM'), searchptr);
if (ptr == NULL)
error("Room %d missing image blocks(s)", _roomResource);
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), ptr);
if (_version == 8)
// In V8, IMHD has no obj_id, but rather a name string. We map the name
// back to an object id using a table derived from the DOBJ resource.
obim_id = _objectIDMap[imhd->v8.name];
else if (_version == 7)
obim_id = READ_LE_UINT16(&imhd->v7.obj_id);
else
obim_id = READ_LE_UINT16(&imhd->old.obj_id);
for (j = 1; j < _numLocalObjects; j++) {
if (_objs[j].obj_nr == obim_id)
_objs[j].OBIMoffset = ptr - room;
}
searchptr = NULL;
}
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr && !_objs[i].fl_object_index)
setupRoomObject(&_objs[i], room);
}
CHECK_HEAP
}
void Scumm::loadRoomObjectsOldBundle() {
int i;
ObjectData *od;
const byte *room, *ptr;
CHECK_HEAP
room = getResourceAddress(rtRoom, _roomResource);
_numObjectsInRoom = room[20];
if (_numObjectsInRoom == 0)
return;
if (_numObjectsInRoom > _numLocalObjects)
error("More than %d objects in room %d", _numLocalObjects, _roomResource);
if (_version <= 2)
ptr = room + 28;
else
ptr = room + 29;
for (i = 0; i < _numObjectsInRoom; i++) {
od = &_objs[findLocalObjectSlot()];
od->OBIMoffset = READ_LE_UINT16(ptr);
od->OBCDoffset = READ_LE_UINT16(ptr + 2 * _numObjectsInRoom);
setupRoomObject(od, room);
ptr += 2;
if (_dumpScripts) {
char buf[32];
sprintf(buf, "roomobj-%d-", _roomResource);
dumpResource(buf, od->obj_nr, room + od->OBCDoffset);
}
}
CHECK_HEAP
}
void Scumm::loadRoomObjectsSmall() {
int i, j;
ObjectData *od;
const byte *ptr;
uint16 obim_id;
const byte *room, *searchptr;
const RoomHeader *roomhdr;
CHECK_HEAP
room = getResourceAddress(rtRoom, _roomResource);
roomhdr = (const RoomHeader *)findResourceData(MKID('RMHD'), room);
_numObjectsInRoom = READ_LE_UINT16(&(roomhdr->old.numObjects));
if (_numObjectsInRoom == 0)
return;
if (_numObjectsInRoom > _numLocalObjects)
error("More than %d objects in room %d", _numLocalObjects, _roomResource);
searchptr = room;
for (i = 0; i < _numObjectsInRoom; i++) {
od = &_objs[findLocalObjectSlot()];
ptr = findResourceSmall(MKID('OBCD'), searchptr);
if (ptr == NULL)
error("Room %d missing object code block(s)", _roomResource);
od->OBCDoffset = ptr - room;
od->obj_nr = READ_LE_UINT16(ptr + 6);
if (_dumpScripts) {
char buf[32];
sprintf(buf, "roomobj-%d-", _roomResource);
dumpResource(buf, od->obj_nr, ptr);
}
searchptr = NULL;
}
searchptr = room;
for (i = 0; i < _numObjectsInRoom; i++) {
ptr = findResourceSmall(MKID('OBIM'), searchptr);
if (ptr == NULL)
error("Room %d missing image blocks(s)", _roomResource);
obim_id = READ_LE_UINT16(ptr + 6);
for (j = 1; j < _numLocalObjects; j++) {
if (_objs[j].obj_nr == obim_id)
_objs[j].OBIMoffset = ptr - room;
}
searchptr = NULL;
}
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr && !_objs[i].fl_object_index) {
setupRoomObject(&_objs[i], room);
}
}
CHECK_HEAP
}
void Scumm::setupRoomObject(ObjectData *od, const byte *room, const byte *searchptr) {
const CodeHeader *cdhd = NULL;
const ImageHeader *imhd = NULL;
assert(room);
if (_features & GF_SMALL_HEADER) {
const byte *ptr = room + od->OBCDoffset;
if (_features & GF_OLD_BUNDLE)
ptr -= 2;
od->obj_nr = READ_LE_UINT16(ptr + 6);
od->x_pos = *(ptr + 9) << 3;
od->y_pos = ((*(ptr + 10)) & 0x7F) << 3;
od->parentstate = (*(ptr + 10) & 0x80) ? 1 : 0;
if (_version <= 2)
od->parentstate <<= 3;
od->width = *(ptr + 11) << 3;
od->parent = *(ptr + 12);
if (_version <= 2) {
od->walk_x = *(ptr + 13) * 8;
od->walk_y = (*(ptr + 14) & 0x1f) * 8;
od->actordir = (*(ptr + 15)) & 7;
od->height = *(ptr + 15) & 0xf8;
} else {
od->walk_x = READ_LE_UINT16(ptr + 13);
od->walk_y = READ_LE_UINT16(ptr + 15);
od->actordir = (*(ptr + 17)) & 7;
od->height = *(ptr + 17) & 0xf8;
}
return;
}
if (searchptr == NULL) {
if (_version == 8)
searchptr = getResourceAddress(rtRoomScripts, _roomResource);
else
searchptr = room;
}
cdhd = (const CodeHeader *)findResourceData(MKID('CDHD'), searchptr + od->OBCDoffset);
if (cdhd == NULL)
error("Room %d missing CDHD blocks(s)", _roomResource);
if (_version == 8) {
od->obj_nr = READ_LE_UINT16(&(cdhd->v7.obj_id));
od->parent = cdhd->v7.parent;
od->parentstate = cdhd->v7.parentstate;
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), room + od->OBIMoffset);
od->x_pos = (int)READ_LE_UINT32(&imhd->v8.x_pos);
od->y_pos = (int)READ_LE_UINT32(&imhd->v8.y_pos);
od->width = (uint)READ_LE_UINT32(&imhd->v8.width);
od->height = (uint)READ_LE_UINT32(&imhd->v8.height);
// HACK: This is done sinec an angle doesn't fit into a byte (360 > 256)
od->actordir = toSimpleDir(1, READ_LE_UINT32(&imhd->v8.actordir));
} else if (_version == 7) {
od->obj_nr = READ_LE_UINT16(&(cdhd->v7.obj_id));
od->parent = cdhd->v7.parent;
od->parentstate = cdhd->v7.parentstate;
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), room + od->OBIMoffset);
od->x_pos = READ_LE_UINT16(&imhd->v7.x_pos);
od->y_pos = READ_LE_UINT16(&imhd->v7.y_pos);
od->width = READ_LE_UINT16(&imhd->v7.width);
od->height = READ_LE_UINT16(&imhd->v7.height);
od->actordir = READ_LE_UINT16(&imhd->v7.actordir);
} else if (_version == 6) {
od->obj_nr = READ_LE_UINT16(&(cdhd->v6.obj_id));
od->width = READ_LE_UINT16(&cdhd->v6.w);
od->height = READ_LE_UINT16(&cdhd->v6.h);
od->x_pos = ((int16)READ_LE_UINT16(&cdhd->v6.x));
od->y_pos = ((int16)READ_LE_UINT16(&cdhd->v6.y));
if (cdhd->v6.flags == 0x80) {
od->parentstate = 1;
} else {
od->parentstate = (cdhd->v6.flags & 0xF);
}
od->parent = cdhd->v6.parent;
od->actordir = cdhd->v6.actordir;
} else {
od->obj_nr = READ_LE_UINT16(&(cdhd->v5.obj_id));
od->width = cdhd->v5.w << 3;
od->height = cdhd->v5.h << 3;
od->x_pos = cdhd->v5.x << 3;
od->y_pos = cdhd->v5.y << 3;
if (cdhd->v5.flags == 0x80) {
od->parentstate = 1;
} else {
od->parentstate = (cdhd->v5.flags & 0xF);
}
od->parent = cdhd->v5.parent;
od->walk_x = READ_LE_UINT16(&cdhd->v5.walk_x);
od->walk_y = READ_LE_UINT16(&cdhd->v5.walk_y);
od->actordir = cdhd->v5.actordir;
}
od->fl_object_index = 0;
}
void Scumm::fixObjectFlags() {
int i;
ObjectData *od = &_objs[1];
for (i = 1; i < _numLocalObjects; i++, od++) {
if (od->obj_nr > 0)
od->state = getState(od->obj_nr);
}
}
void Scumm::processDrawQue() {
int i, j;
for (i = 0; i < _drawObjectQueNr; i++) {
j = _drawObjectQue[i];
if (j)
drawObject(j, 0);
}
_drawObjectQueNr = 0;
}
void Scumm::clearOwnerOf(int obj) {
int i, j;
uint16 *a;
stopObjectScript(obj);
if (getOwner(obj) == OF_OWNER_ROOM) {
i = 0;
do {
if (_objs[i].obj_nr == obj) {
if (!_objs[i].fl_object_index)
return;
nukeResource(rtFlObject, _objs[i].fl_object_index);
_objs[i].obj_nr = 0;
_objs[i].fl_object_index = 0;
}
} while (++i < _numLocalObjects);
return;
}
for (i = 1; i < _maxInventoryItems; i++) {
if (_inventory[i] == obj) {
j = whereIsObject(obj);
if (j == WIO_INVENTORY) {
nukeResource(rtInventory, i);
_inventory[i] = 0;
}
a = &_inventory[1];
for (i = 1; i < _maxInventoryItems - 1; i++, a++) {
if (!a[0] && a[1]) {
a[0] = a[1];
a[1] = 0;
_baseInventoryItems[i] = _baseInventoryItems[i + 1];
_baseInventoryItems[i + 1] = NULL;
}
}
return;
}
}
}
void Scumm::removeObjectFromRoom(int obj) {
int i, j, strip;
for (i = 1; i < _numLocalObjects; i++) {
if (_objs[i].obj_nr == (uint16)obj) {
if (_objs[i].width != 0) {
for (j = 0; j < _objs[i].width >> 3; j++) {
strip = (_objs[i].x_pos >> 3) + j;
// Clip value
if (strip < _screenStartStrip)
continue;
if (strip > _screenEndStrip)
break;
setGfxUsageBit(strip, USAGE_BIT_DIRTY);
}
}
_BgNeedsRedraw = true;
return;
}
}
}
void Scumm::addObjectToDrawQue(int object) {
_drawObjectQue[_drawObjectQueNr++] = object;
if ((unsigned int)_drawObjectQueNr > ARRAYSIZE(_drawObjectQue))
error("Draw Object Que overflow");
}
void Scumm::clearDrawObjectQueue() {
_drawObjectQueNr = 0;
}
const byte *Scumm::getObjOrActorName(int obj) {
byte *objptr;
int i;
if (obj < _numActors)
return derefActor(obj, "getObjOrActorName")->getActorName();
if (_version >= 6) {
for (i = 0; i < _numNewNames; i++) {
if (_newNames[i] == obj) {
debug(5, "Found new name for object %d at _newNames[%d]", obj, i);
return getResourceAddress(rtObjectName, i);
break;
}
}
}
objptr = getOBCDFromObject(obj);
if (objptr == NULL)
return NULL;
if (_features & GF_SMALL_HEADER) {
byte offset = 0;
if (_version <= 2)
offset = *(objptr + 14);
else if (_features & GF_OLD_BUNDLE)
offset = *(objptr + 16);
else
offset = READ_LE_UINT16(objptr + 18);
return (objptr + offset);
}
return findResourceData(MKID('OBNA'), objptr);
}
uint32 Scumm::getOBCDOffs(int object) {
int i;
if (_objectOwnerTable[object] != OF_OWNER_ROOM)
return 0;
for (i = (_numLocalObjects-1); i > 0; i--) {
if (_objs[i].obj_nr == object) {
if (_objs[i].fl_object_index != 0)
return 8;
return _objs[i].OBCDoffset;
}
}
return 0;
}
byte *Scumm::getOBCDFromObject(int obj) {
int i;
if (_objectOwnerTable[obj] != OF_OWNER_ROOM) {
for (i = 0; i < _maxInventoryItems; i++) {
if (_inventory[i] == obj)
return getResourceAddress(rtInventory, i);
}
} else {
for (i = (_numLocalObjects-1); i > 0; --i) {
if (_objs[i].obj_nr == obj) {
if (_objs[i].fl_object_index)
return getResourceAddress(rtFlObject, _objs[i].fl_object_index) + 8;
if (_version == 8)
return getResourceAddress(rtRoomScripts, _roomResource) + _objs[i].OBCDoffset;
else
return getResourceAddress(rtRoom, _roomResource) + _objs[i].OBCDoffset;
}
}
}
return 0;
}
void Scumm::addObjectToInventory(uint obj, uint room) {
int i, slot;
uint32 size;
const byte *ptr;
byte *dst;
FindObjectInRoom foir;
debug(1, "Adding object %d from room %d into inventory", obj, room);
CHECK_HEAP
if (whereIsObject(obj) == WIO_FLOBJECT) {
i = getObjectIndex(obj);
ptr = getResourceAddress(rtFlObject, _objs[i].fl_object_index) + 8;
size = READ_BE_UINT32(ptr + 4);
} else {
findObjectInRoom(&foir, foCodeHeader, obj, room);
if (_features & GF_OLD_BUNDLE)
size = READ_LE_UINT16(foir.obcd);
else if (_features & GF_SMALL_HEADER)
size = READ_LE_UINT32(foir.obcd);
else
size = READ_BE_UINT32(foir.obcd + 4);
ptr = foir.obcd;
}
slot = getInventorySlot();
_inventory[slot] = obj;
dst = createResource(rtInventory, slot, size);
assert(dst);
memcpy(dst, ptr, size);
CHECK_HEAP
}
void Scumm::findObjectInRoom(FindObjectInRoom *fo, byte findWhat, uint id, uint room) {
const CodeHeader *cdhd;
int i, numobj;
const byte *roomptr, *obcdptr, *obimptr, *searchptr;
const ImageHeader *imhd;
int id2;
int id3;
if (findWhat & foCheckAlreadyLoaded && getObjectIndex(id) != -1) {
if (_features & GF_OLD_BUNDLE) {
// I am not sure if this is even needed for old games...
// but using RES_SIZE definitely won't work with OLD_BUNDLE, since it
// assumes the size is 32 bit but in old games it's 16 bit
error("findObjectInRoom foCheckAlreadyLoaded NYI for GF_OLD_BUNDLE (id = %d, room = %d)", id, room);
}
fo->obcd = obcdptr = getOBCDFromObject(id);
assert((const byte *)obcdptr > (byte *)256);
fo->obim = obimptr = obcdptr + RES_SIZE(obcdptr);
fo->cdhd = (const CodeHeader *)findResourceData(MKID('CDHD'), obcdptr);
fo->imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), obimptr);
return;
}
fo->roomptr = roomptr = getResourceAddress(rtRoom, room);
if (!roomptr)
error("findObjectInRoom: failed getting roomptr to %d", room);
if (_features & GF_OLD_BUNDLE) {
numobj = roomptr[20];
} else {
const RoomHeader *roomhdr = (const RoomHeader *)findResourceData(MKID('RMHD'), roomptr);
if (_version == 8)
numobj = READ_LE_UINT32(&(roomhdr->v8.numObjects));
else if (_version == 7)
numobj = READ_LE_UINT16(&(roomhdr->v7.numObjects));
else
numobj = READ_LE_UINT16(&(roomhdr->old.numObjects));
}
if (numobj == 0)
error("findObjectInRoom: No object found in room %d", room);
if (numobj > _numLocalObjects)
error("findObjectInRoom: More (%d) than %d objects in room %d", numobj, _numLocalObjects, room);
if (_features & GF_OLD_BUNDLE) {
if (_version <= 2)
searchptr = roomptr + 28;
else
searchptr = roomptr + 29;
for (i = 0; i < numobj; i++) {
obimptr = roomptr + READ_LE_UINT16(searchptr);
obcdptr = roomptr + READ_LE_UINT16(searchptr + 2 * _numObjectsInRoom);
id2 = READ_LE_UINT16(obcdptr + 4);
if (id2 == (uint16)id) {
if (findWhat & foCodeHeader) {
fo->obcd = obcdptr;
fo->cdhd = (const CodeHeader *)(obcdptr + 10); // TODO - FIXME
}
if (findWhat & foImageHeader) {
fo->obim = obimptr;
fo->imhd = NULL;
}
break;
}
searchptr += 2;
}
return;
}
if (findWhat & foCodeHeader) {
if (_version == 8)
searchptr = getResourceAddress(rtRoomScripts, room);
else
searchptr = roomptr;
assert(searchptr);
for (i = 0;;) {
if (_features & GF_SMALL_HEADER)
obcdptr = findResourceSmall(MKID('OBCD'), searchptr);
else
obcdptr = findResource(MKID('OBCD'), searchptr);
if (obcdptr == NULL)
error("findObjectInRoom: Not enough code blocks in room %d", room);
cdhd = (const CodeHeader *)findResourceData(MKID('CDHD'), obcdptr);
if (_features & GF_SMALL_HEADER)
id2 = READ_LE_UINT16(obcdptr + 6);
else if (_version >= 7)
id2 = READ_LE_UINT16(&(cdhd->v7.obj_id));
else if (_version == 6)
id2 = READ_LE_UINT16(&(cdhd->v6.obj_id));
else
id2 = READ_LE_UINT16(&(cdhd->v5.obj_id));
if (id2 == (uint16)id) {
fo->obcd = obcdptr;
fo->cdhd = cdhd;
break;
}
if (++i == numobj)
error("findObjectInRoom: Object %d not found in room %d", id, room);
searchptr = NULL;
}
}
roomptr = fo->roomptr;
if (findWhat & foImageHeader) {
searchptr = roomptr;
assert(searchptr);
for (i = 0;;) {
if (_features & GF_SMALL_HEADER)
obimptr = findResourceSmall(MKID('OBIM'), searchptr);
else
obimptr = findResource(MKID('OBIM'), searchptr);
if (obimptr == NULL)
error("findObjectInRoom: Not enough image blocks in room %d", room);
imhd = (const ImageHeader *)findResourceData(MKID('IMHD'), obimptr);
if (_features & GF_SMALL_HEADER)
id3 = READ_LE_UINT16(obimptr + 6);
else if (_version == 8)
// In V8, IMHD has no obj_id, but rather a name string. We map the name
// back to an object id using a table derived from the DOBJ resource.
id3 = _objectIDMap[imhd->v8.name];
else if (_version == 7)
id3 = READ_LE_UINT16(&imhd->v7.obj_id);
else
id3 = READ_LE_UINT16(&imhd->old.obj_id);
if (id3 == (uint16)id) {
fo->obim = obimptr;
fo->imhd = imhd;
break;
}
if (++i == numobj)
error("findObjectInRoom: Object %d image not found in room %d", id, room);
searchptr = NULL;
}
}
}
int Scumm::getInventorySlot() {
int i;
for (i = 1; i <= _maxInventoryItems; i++) {
if (_inventory[i] == 0)
return i;
}
error("Inventory full, %d max items", _maxInventoryItems);
return -1;
}
void Scumm::SamInventoryHack(int obj) {
// FIXME: Sam and Max hack
int base = 6;
while (base < 80) {
int value = readArray(178, 0, base);
if (value == obj)
return;
if (value == 0) {
_scummVars[179]++;
writeArray(178, 0, base, obj);
return;
}
base++;
}
}
void Scumm::setOwnerOf(int obj, int owner) {
ScriptSlot *ss;
if (owner == 0) {
clearOwnerOf(obj);
ss = &vm.slot[_currentScript];
if (ss->where == WIO_INVENTORY && _inventory[ss->number] == obj) {
putOwner(obj, 0);
runInventoryScript(0);
stopObjectCode();
return;
}
}
if ((owner == 2) && (_gameId == GID_SAMNMAX))
SamInventoryHack(obj);
putOwner(obj, owner);
runInventoryScript(0);
}
int Scumm::getObjX(int obj) {
if (obj < _numActors) {
if (obj < 1)
return 0; /* fix for indy4's map */
return derefActor(obj, "getObjX")->x;
} else {
if (whereIsObject(obj) == WIO_NOT_FOUND)
return -1;
int x, y;
getObjectOrActorXY(obj, x, y);
return x;
}
}
int Scumm::getObjY(int obj) {
if (obj < _numActors) {
if (obj < 1)
return 0; /* fix for indy4's map */
return derefActor(obj, "getObjY")->y;
} else {
if (whereIsObject(obj) == WIO_NOT_FOUND)
return -1;
int x, y;
getObjectOrActorXY(obj, x, y);
return y;
}
}
int Scumm::getObjOldDir(int obj) {
return newDirToOldDir(getObjNewDir(obj));
}
int Scumm::getObjNewDir(int obj) {
int dir;
if (obj < _numActors) {
dir = derefActor(obj, "getObjNewDir")->facing;
} else {
int x, y;
getObjectXYPos(obj, x, y, dir);
}
return dir;
}
int Scumm::findInventory(int owner, int idx) {
int count = 1, i, obj;
for (i = 0; i != _maxInventoryItems; i++) {
obj = _inventory[i];
if (obj && getOwner(obj) == owner && count++ == idx)
return obj;
}
return 0;
}
int Scumm::getInventoryCount(int owner) {
int i, obj;
int count = 0;
for (i = 0; i != _maxInventoryItems; i++) {
obj = _inventory[i];
if (obj && getOwner(obj) == owner)
count++;
}
return count;
}
void Scumm::setObjectState(int obj, int state, int x, int y) {
int i;
i = getObjectIndex(obj);
if (i == -1) {
warning("setObjectState: no such object %d", obj);
return;
}
if (x != -1) {
_objs[i].x_pos = x << 3;
_objs[i].y_pos = y << 3;
}
addObjectToDrawQue(i);
putState(obj, state);
}
static int getDist(int x, int y, int x2, int y2) {
int a = abs(y - y2);
int b = abs(x - x2);
if (a > b)
return a;
return b;
}
int Scumm::getDistanceBetween(bool is_obj_1, int b, int c, bool is_obj_2, int e, int f) {
int i, j;
int x, y;
int x2, y2;
j = i = 0xFF;
if (is_obj_1) {
if (getObjectOrActorXY(b, x, y) == -1)
return -1;
if (b < _numActors)
i = derefActor(b, "unkObjProc1")->scalex;
} else {
x = b;
y = c;
}
if (is_obj_2) {
if (getObjectOrActorXY(e, x2, y2) == -1)
return -1;
if (e < _numActors)
j = derefActor(e, "unkObjProc1(2)")->scalex;
} else {
x2 = e;
y2 = f;
}
return getDist(x, y, x2, y2) * 0xFF / ((i + j) >> 1);
}
void Scumm::setCursorImg(uint img, uint room, uint imgindex) {
int w, h;
const byte *dataptr, *bomp;
uint32 size;
FindObjectInRoom foir;
if (room == (uint) - 1)
room = getObjectRoom(img);
findObjectInRoom(&foir, foCodeHeader | foImageHeader | foCheckAlreadyLoaded, img, room);
if (_version == 8) {
setCursorHotspot(READ_LE_UINT32(&foir.imhd->v8.hotspot[0].x),
READ_LE_UINT32(&foir.imhd->v8.hotspot[0].y));
w = READ_LE_UINT32(&foir.imhd->v8.width) >> 3;
h = READ_LE_UINT32(&foir.imhd->v8.height) >> 3;
} else if (_version == 7) {
setCursorHotspot(READ_LE_UINT16(&foir.imhd->v7.hotspot[0].x),
READ_LE_UINT16(&foir.imhd->v7.hotspot[0].y));
w = READ_LE_UINT16(&foir.imhd->v7.width) >> 3;
h = READ_LE_UINT16(&foir.imhd->v7.height) >> 3;
} else {
setCursorHotspot(READ_LE_UINT16(&foir.imhd->old.hotspot[0].x),
READ_LE_UINT16(&foir.imhd->old.hotspot[0].y));
w = READ_LE_UINT16(&foir.cdhd->v6.w) >> 3;
h = READ_LE_UINT16(&foir.cdhd->v6.h) >> 3;
}
// TODO - for V8 don't use IMxx_tags. Rather, we do something similiar to the V8
// code in drawBlastObject. It would be *much* nicer if we could aggregate this
// common code into some helper functions, instead of having long convuluted
// cases scattered all over the place.
if (_version == 8) {
dataptr = findResource(MKID('IMAG'), foir.obim);
assert(dataptr);
dataptr = findResource(MKID('WRAP'), dataptr);
assert(dataptr);
dataptr = findResource(MKID('OFFS'), dataptr);
assert(dataptr);
dataptr += READ_LE_UINT32(dataptr + 4 + 4*imgindex);
// TODO - distinguish between SMAP and BOMP here?
// HACK - adjust dataptr here until bomp code gets adjusted for V8
bomp = dataptr;
} else {
dataptr = findResource(IMxx_tags[imgindex], foir.obim);
if (dataptr == NULL)
error("setCursorImg: No such image");
size = READ_BE_UINT32(dataptr + 4);
if (size > sizeof(_grabbedCursor))
error("setCursorImg: Cursor image too large");
bomp = findResource(MKID('BOMP'), dataptr);
}
if (bomp != NULL)
useBompCursor(bomp, w, h);
else
useIm01Cursor(dataptr, w, h);
}
void Scumm::nukeFlObjects(int min, int max) {
ObjectData *od;
int i;
warning("nukeFlObjects(%d,%d)", min, max);
for (i = (_numLocalObjects-1), od = _objs; --i >= 0; od++)
if (od->fl_object_index && od->obj_nr >= min && od->obj_nr <= max) {
nukeResource(rtFlObject, od->fl_object_index);
od->obj_nr = 0;
od->fl_object_index = 0;
}
}
void Scumm::enqueueObject(int objectNumber, int objectX, int objectY, int objectWidth,
int objectHeight, int scaleX, int scaleY, int image, int mode) {
BlastObject *eo;
ObjectData *od;
if (_blastObjectQueuePos >= (int)ARRAYSIZE(_blastObjectQueue)) {
warning("enqueueObject: overflow");
return;
}
int idx = getObjectIndex(objectNumber);
eo = &_blastObjectQueue[_blastObjectQueuePos++];
eo->number = objectNumber;
eo->posX = objectX + (camera._cur.x & 7);
eo->posY = objectY + (camera._cur.y - (_screenHeight / 2));
if (objectWidth == 0) {
od = &_objs[idx];
eo->width = od->width;
} else {
eo->width = objectWidth;
}
if (objectHeight == 0) {
od = &_objs[idx];
eo->height = od->height;
} else {
eo->height = objectHeight;
}
eo->scaleX = scaleX;
eo->scaleY = scaleY;
eo->image = image;
eo->mode = mode;
}
void Scumm::drawBlastObjects() {
BlastObject *eo;
int i;
eo = _blastObjectQueue;
for (i = 0; i < _blastObjectQueuePos; i++, eo++) {
drawBlastObject(eo);
}
}
void Scumm::drawBlastObject(BlastObject *eo) {
VirtScreen *vs;
const byte *bomp, *ptr;
int idx, objnum;
BompDrawData bdd;
vs = &virtscr[0];
checkRange(_numGlobalObjects - 1, 30, eo->number, "Illegal Blast object %d");
objnum = getObjectIndex(eo->number);
if (objnum == -1)
error("drawBlastObject: getObjectIndex on BlastObject %d failed", eo->number);
idx = _objs[objnum].fl_object_index;
if (idx) {
ptr = getResourceAddress(rtFlObject, idx);
ptr = findResource(MKID('OBIM'), ptr);
} else {
idx = objnum;
ptr = getResourceAddress(rtRoom, _roomResource) + _objs[objnum].OBIMoffset;
}
if (!ptr)
error("BlastObject object %d (%d) image not found", eo->number, idx);
if (_version == 8) {
// The OBIM contains an IMAG, which in turn contains a WRAP, which contains
// an OFFS chunk and multiple BOMP chunks. To find the right BOMP, we can
// either use the offsets in the OFFS chunk, or iterate over all BOMPs we find.
// Here we use the first method.
ptr = findResource(MKID('IMAG'), ptr);
assert(ptr);
ptr = findResource(MKID('WRAP'), ptr);
assert(ptr);
ptr = findResource(MKID('OFFS'), ptr);
assert(ptr);
// Get the address of the specified BOMP (we really should verify it's a BOMP and not a SMAP
bomp = ptr + READ_LE_UINT32(ptr + 4 + 4*eo->image) + 8;
} else {
const byte *img = findResource(IMxx_tags[eo->image], ptr);
if (!img)
img = findResource(IMxx_tags[1], ptr); // Backward compatibility with samnmax blast objects
if (!img)
error("blast-object %d invalid image %d (1-x)", eo->number, eo->image);
bomp = findResourceData(MKID('BOMP'), img);
}
if (!bomp)
error("object %d is not a blast object", eo->number);
//hexdump(bomp,32);
if (_version == 8) {
bdd.srcwidth = READ_LE_UINT32(&((const BompHeader *)bomp)->v8.width);
bdd.srcheight = READ_LE_UINT32(&((const BompHeader *)bomp)->v8.height);
} else {
bdd.srcwidth = READ_LE_UINT16(&((const BompHeader *)bomp)->old.width);
bdd.srcheight = READ_LE_UINT16(&((const BompHeader *)bomp)->old.height);
}
bdd.out = vs->screenPtr + vs->xstart;
bdd.outwidth = vs->width;
bdd.outheight = vs->height;
if (_version == 8) {
bdd.dataptr = bomp + 8; // Why this? See also useBompCursor
} else {
bdd.dataptr = bomp + 10; // Why this? See also useBompCursor
}
bdd.x = eo->posX;
bdd.y = eo->posY;
bdd.scale_x = (byte)eo->scaleX;
bdd.scale_y = (byte)eo->scaleY;
if ((bdd.scale_x != 255) || (bdd.scale_y != 255)) {
byte bomp_scaling_x[64], bomp_scaling_y[64];
bdd.scalingXPtr = bomp_scaling_x;
bdd.scalingYPtr = bomp_scaling_y;
bdd.scaleRight = setupBompScale(bomp_scaling_x, bdd.srcwidth, bdd.scale_x);
bdd.scaleBottom = setupBompScale(bomp_scaling_y, bdd.srcheight, bdd.scale_y);
bdd.shadowMode = 0;
drawBomp(bdd, false);
} else {
bdd.scalingXPtr = NULL;
bdd.scalingYPtr = NULL;
bdd.scaleRight = 0;
bdd.scaleBottom = 0;
bdd.shadowMode = eo->mode;
drawBomp(bdd, false);
}
updateDirtyRect(vs->number, bdd.x, bdd.x + bdd.srcwidth, bdd.y, bdd.y + bdd.srcheight, 0);
}
void Scumm::removeBlastObjects() {
BlastObject *eo;
int i;
eo = _blastObjectQueue;
for (i = 0; i < _blastObjectQueuePos; i++, eo++) {
removeBlastObject(eo);
}
clearEnqueue();
}
void Scumm::removeBlastObject(BlastObject *eo) {
VirtScreen *vs = &virtscr[0];
int top, bottom, left, right;
int left_strip, right_strip;
int i;
top = eo->posY;
bottom = eo->posY + eo->height;
left = eo->posX;
right = eo->posX + eo->width;
if (bottom < 0 || right < 0 || top > vs->height || left > vs->width)
return;
if (top < 0)
top = 0;
if (bottom > vs->height)
bottom = vs->height;
if (left < 0)
left = 0;
if (right > vs->width)
right = vs->width;
left_strip = left >> 3;
right_strip = (right - 1) >> 3;
if (left_strip < 0)
left_strip = 0;
if (_version >= 7) {
if (right_strip > 409)
right_strip = 409;
} else {
if (right_strip >= 200)
right_strip = 200;
}
for (i = left_strip; i <= right_strip; i++)
gdi.resetBackground(top, bottom, i);
updateDirtyRect(0, left, right, top, bottom, USAGE_BIT_RESTORED);
}
int Scumm::findLocalObjectSlot() {
int i;
for (i = 1; i < _numLocalObjects; i++) {
if (!_objs[i].obj_nr)
return i;
}
return -1;
}
int Scumm::findFlObjectSlot() {
int i;
for (i = 1; i < _maxFLObject; i++) {
if (_baseFLObject[i] == NULL)
return i;
}
error("findFlObjectSlot: Out of FLObject slots");
return -1;
}
void Scumm::loadFlObject(uint object, uint room) {
FindObjectInRoom foir;
int slot, objslot;
ObjectData *od;
byte *flob;
uint32 obcd_size, obim_size, flob_size;
bool isRoomLocked, isRoomScriptsLocked;
// Don't load an already loaded object
if (whereIsObject(object) != WIO_NOT_FOUND)
return;
// Locate the object in the room resource
findObjectInRoom(&foir, foImageHeader | foCodeHeader, object, room);
// Add an entry for the new floating object in the local object table
if (!(objslot = findLocalObjectSlot()))
error("loadFlObject: Local Object Table overflow");
od = &_objs[objslot];
// Dump object script
if (_dumpScripts) {
char buf[32];
const byte *ptr = foir.obcd;
sprintf(buf, "roomobj-%d-", room);
ptr = findResource(MKID('VERB'), ptr, 0);
dumpResource(buf, object, ptr);
}
// Setup sizes
obcd_size = READ_BE_UINT32(foir.obcd + 4);
od->OBCDoffset = 8;
od->OBIMoffset = obcd_size + 8;
obim_size = READ_BE_UINT32(foir.obim + 4);
flob_size = obcd_size + obim_size + 8;
// Lock room/roomScripts for the given room. They contains the OBCD/OBIM
// data, and a call to createResource might expire them, hence we lock them.
isRoomLocked = ((res.flags[rtRoom][room] & RF_LOCK) != 0);
isRoomScriptsLocked = ((res.flags[rtRoomScripts][room] & RF_LOCK) != 0);
if (!isRoomLocked)
lock(rtRoom, room);
if (_version == 8 && !isRoomScriptsLocked)
lock(rtRoomScripts, room);
// Allocate slot & memory for floating object
slot = findFlObjectSlot();
flob = createResource(rtFlObject, slot, flob_size);
assert(flob);
// Copy object code + object image to floating object
((uint32 *)flob)[0] = MKID('FLOB');
((uint32 *)flob)[1] = TO_BE_32(flob_size);
memcpy(flob + 8, foir.obcd, obcd_size);
memcpy(flob + 8 + obcd_size, foir.obim, obim_size);
// Unlock room/roomScripts
if (!isRoomLocked)
unlock(rtRoom, room);
if (_version == 8 && !isRoomScriptsLocked)
unlock(rtRoomScripts, room);
// Setup local object flags
setupRoomObject(od, flob, flob);
od->fl_object_index = slot;
}
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