mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-21 09:21:08 +00:00
1534 lines
39 KiB
C++
1534 lines
39 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/str.h"
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#include "scumm/charset.h"
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#include "scumm/dialogs.h"
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#include "scumm/file.h"
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#include "scumm/imuse/imuse.h"
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#include "scumm/imuse_digi/dimuse.h"
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#include "scumm/he/intern_he.h"
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#include "scumm/object.h"
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#include "scumm/resource.h"
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#include "scumm/scumm.h"
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#include "scumm/scumm_v5.h"
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#include "scumm/scumm_v8.h"
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#include "scumm/sound.h"
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#include "scumm/util.h"
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#include "scumm/verbs.h"
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namespace Scumm {
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enum {
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RF_LOCK = 0x80,
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RF_USAGE = 0x7F,
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RF_USAGE_MAX = RF_USAGE,
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RS_MODIFIED = 0x10
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};
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extern const char *resTypeFromId(int id);
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static uint16 newTag2Old(uint32 newTag);
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static const byte *findResourceSmall(uint32 tag, const byte *searchin);
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static bool checkTryMedia(BaseScummFile *handle);
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/* Open a room */
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void ScummEngine::openRoom(const int room) {
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bool result;
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byte encByte = 0;
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debugC(DEBUG_GENERAL, "openRoom(%d)", room);
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assert(room >= 0);
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/* Don't load the same room again */
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if (_lastLoadedRoom == room)
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return;
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_lastLoadedRoom = room;
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/* Room -1 means close file */
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if (room == -1) {
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deleteRoomOffsets();
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_fileHandle->close();
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return;
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}
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// Load the disk numer / room offs (special case for room 0 exists because
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// room 0 contains the data which is used to create the roomno / roomoffs
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// tables -- hence obviously we mustn't use those when loading room 0.
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const uint32 diskNumber = room ? _res->roomno[rtRoom][room] : 0;
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const uint32 room_offs = room ? _res->roomoffs[rtRoom][room] : 0;
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// FIXME: Since room_offs is const, clearly the following loop either
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// is never entered, or loops forever (if it wasn't for the return/error
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// statements in it, that is). -> This should be cleaned up!
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// Maybe we should re-enabled the looping properly, to deal with disc
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// changes in COMI ?
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while (room_offs != RES_INVALID_OFFSET) {
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if (room_offs != 0 && room != 0 && _game.heversion < 98) {
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_fileOffset = _res->roomoffs[rtRoom][room];
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return;
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}
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Common::String filename(generateFilename(room));
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// Determine the encryption, if any.
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if (_game.features & GF_USE_KEY) {
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if (_game.version <= 3)
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encByte = 0xFF;
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else if ((_game.version == 4) && (room == 0 || room >= 900))
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encByte = 0;
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else
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encByte = 0x69;
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} else
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encByte = 0;
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if (room > 0 && (_game.version == 8))
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VAR(VAR_CURRENTDISK) = diskNumber;
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// Try to open the file
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result = openResourceFile(filename, encByte);
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if (result) {
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if (room == 0)
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return;
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deleteRoomOffsets();
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readRoomsOffsets();
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_fileOffset = _res->roomoffs[rtRoom][room];
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if (_fileOffset != 8)
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return;
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error("Room %d not in %s", room, filename.c_str());
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return;
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}
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askForDisk(filename.c_str(), diskNumber);
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}
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do {
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char buf[16];
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snprintf(buf, sizeof(buf), "%.3d.lfl", room);
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encByte = 0;
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if (openResourceFile(buf, encByte))
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break;
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askForDisk(buf, diskNumber);
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} while (1);
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deleteRoomOffsets();
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_fileOffset = 0; // start of file
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}
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void ScummEngine::closeRoom() {
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if (_lastLoadedRoom != -1) {
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_lastLoadedRoom = -1;
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deleteRoomOffsets();
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_fileHandle->close();
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}
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}
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/** Delete the currently loaded room offsets. */
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void ScummEngine::deleteRoomOffsets() {
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for (int i = 0; i < _numRooms; i++) {
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if (_res->roomoffs[rtRoom][i] != RES_INVALID_OFFSET)
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_res->roomoffs[rtRoom][i] = 0;
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}
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}
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/** Read room offsets */
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void ScummEngine::readRoomsOffsets() {
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int num, room;
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debug(9, "readRoomOffsets()");
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if (_game.features & GF_SMALL_HEADER) {
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_fileHandle->seek(12, SEEK_SET); // Directly searching for the room offset block would be more generic...
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} else {
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_fileHandle->seek(16, SEEK_SET);
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}
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num = _fileHandle->readByte();
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while (num--) {
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room = _fileHandle->readByte();
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if (_res->roomoffs[rtRoom][room] != RES_INVALID_OFFSET) {
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_res->roomoffs[rtRoom][room] = _fileHandle->readUint32LE();
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} else {
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_fileHandle->readUint32LE();
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}
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}
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}
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bool ScummEngine::openFile(BaseScummFile &file, const Common::String &filename, bool resourceFile) {
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bool result = false;
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if (!_containerFile.empty()) {
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file.close();
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file.open(_containerFile);
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assert(file.isOpen());
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result = file.openSubFile(filename);
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}
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if (!result) {
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file.close();
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result = file.open(filename);
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}
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return result;
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}
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bool ScummEngine::openResourceFile(const Common::String &filename, byte encByte) {
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debugC(DEBUG_GENERAL, "openResourceFile(%s)", filename.c_str());
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if (openFile(*_fileHandle, filename, true)) {
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_fileHandle->setEnc(encByte);
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return true;
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}
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return false;
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}
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void ScummEngine::askForDisk(const char *filename, int disknum) {
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char buf[128];
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if (_game.version == 8) {
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#ifdef ENABLE_SCUMM_7_8
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char result;
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_imuseDigital->stopAllSounds();
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#ifdef MACOSX
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sprintf(buf, "Cannot find file: '%s'\nPlease insert disc %d.\nPress OK to retry, Quit to exit", filename, disknum);
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#else
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sprintf(buf, "Cannot find file: '%s'\nInsert disc %d into drive %s\nPress OK to retry, Quit to exit", filename, disknum, _gameDataDir.getPath().c_str());
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#endif
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result = displayMessage("Quit", buf);
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if (!result) {
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error("Cannot find file: '%s'", filename);
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}
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#endif
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} else {
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sprintf(buf, "Cannot find file: '%s'", filename);
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InfoDialog dialog(this, (char*)buf);
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runDialog(dialog);
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error("Cannot find file: '%s'", filename);
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}
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}
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void ScummEngine::readIndexFile() {
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uint32 blocktype, itemsize;
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int numblock = 0;
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debugC(DEBUG_GENERAL, "readIndexFile()");
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closeRoom();
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openRoom(0);
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if (_game.version <= 5) {
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// Figure out the sizes of various resources
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while (!_fileHandle->eos()) {
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blocktype = _fileHandle->readUint32BE();
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itemsize = _fileHandle->readUint32BE();
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if (_fileHandle->ioFailed())
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break;
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switch (blocktype) {
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case MKID_BE('DOBJ'):
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_numGlobalObjects = _fileHandle->readUint16LE();
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itemsize -= 2;
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break;
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case MKID_BE('DROO'):
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_numRooms = _fileHandle->readUint16LE();
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itemsize -= 2;
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break;
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case MKID_BE('DSCR'):
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_numScripts = _fileHandle->readUint16LE();
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itemsize -= 2;
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break;
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case MKID_BE('DCOS'):
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_numCostumes = _fileHandle->readUint16LE();
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itemsize -= 2;
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break;
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case MKID_BE('DSOU'):
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_numSounds = _fileHandle->readUint16LE();
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itemsize -= 2;
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break;
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}
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_fileHandle->seek(itemsize - 8, SEEK_CUR);
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}
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_fileHandle->clearIOFailed();
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_fileHandle->seek(0, SEEK_SET);
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}
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if (checkTryMedia(_fileHandle)) {
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displayMessage(NULL, "You're trying to run game encrypted by ActiveMark. This is not supported.");
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quitGame();
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return;
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}
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while (true) {
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blocktype = _fileHandle->readUint32BE();
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itemsize = _fileHandle->readUint32BE();
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if (_fileHandle->ioFailed())
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break;
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numblock++;
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readIndexBlock(blocktype, itemsize);
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}
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// if (numblock!=9)
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// error("Not enough blocks read from directory");
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closeRoom();
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}
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#define TRYMEDIA_MARK_LEN 6
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bool checkTryMedia(BaseScummFile *handle) {
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byte buf[TRYMEDIA_MARK_LEN];
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bool matched = true;
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const byte magic[2][TRYMEDIA_MARK_LEN] =
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{{ 0x00, 'T', 'M', 'S', 'A', 'M' },
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{ 'i', '=', '$', ':', '(', '$' }}; // Same but 0x69 xored
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handle->read(buf, TRYMEDIA_MARK_LEN);
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for (int i = 0; i < 2; i++) {
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matched = true;
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for (int j = 0; j < TRYMEDIA_MARK_LEN; j++)
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if (buf[j] != magic[i][j]) {
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matched = false;
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break;
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}
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if (matched)
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break;
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}
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if (matched)
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return true;
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handle->seek(0, SEEK_SET);
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return false;
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}
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#ifdef ENABLE_SCUMM_7_8
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void ScummEngine_v7::readIndexBlock(uint32 blocktype, uint32 itemsize) {
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int num;
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char *ptr;
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switch (blocktype) {
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case MKID_BE('ANAM'): // Used by: The Dig, FT
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debug(9, "found ANAM block, reading audio names");
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num = _fileHandle->readUint16LE();
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ptr = (char*)malloc(num * 9);
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_fileHandle->read(ptr, num * 9);
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_imuseDigital->setAudioNames(num, ptr);
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break;
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case MKID_BE('DRSC'): // Used by: COMI
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readResTypeList(rtRoomScripts);
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break;
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default:
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ScummEngine::readIndexBlock(blocktype, itemsize);
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}
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}
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#endif
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void ScummEngine_v70he::readIndexBlock(uint32 blocktype, uint32 itemsize) {
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int i;
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switch (blocktype) {
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case MKID_BE('DIRI'):
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readResTypeList(rtRoomImage);
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break;
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case MKID_BE('DIRM'):
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readResTypeList(rtImage);
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break;
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case MKID_BE('DIRT'):
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readResTypeList(rtTalkie);
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break;
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case MKID_BE('DLFL'):
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i = _fileHandle->readUint16LE();
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_fileHandle->seek(-2, SEEK_CUR);
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_heV7RoomOffsets = (byte *)calloc(2 + (i * 4), 1);
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_fileHandle->read(_heV7RoomOffsets, (2 + (i * 4)) );
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break;
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case MKID_BE('DISK'):
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i = _fileHandle->readUint16LE();
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_heV7DiskOffsets = (byte *)calloc(i, 1);
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_fileHandle->read(_heV7DiskOffsets, i);
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break;
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case MKID_BE('SVER'):
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// Index version number
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_fileHandle->seek(itemsize - 8, SEEK_CUR);
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break;
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case MKID_BE('INIB'):
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_fileHandle->seek(itemsize - 8, SEEK_CUR);
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debug(2, "INIB index block not yet handled, skipping");
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break;
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default:
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ScummEngine::readIndexBlock(blocktype, itemsize);
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}
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}
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void ScummEngine::readIndexBlock(uint32 blocktype, uint32 itemsize) {
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int i;
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switch (blocktype) {
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case MKID_BE('DCHR'):
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case MKID_BE('DIRF'):
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readResTypeList(rtCharset);
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break;
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case MKID_BE('DOBJ'):
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debug(9, "found DOBJ block, reading object table");
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readGlobalObjects();
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break;
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case MKID_BE('RNAM'):
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// Names of rooms. Maybe we should put them into a table, for use by the debugger?
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if (_game.heversion >= 80) {
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for (int room; (room = _fileHandle->readUint16LE()); ) {
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char buf[100];
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i = 0;
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for (byte s; (s = _fileHandle->readByte()) && i < ARRAYSIZE(buf) - 1; ) {
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buf[i++] = s;
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}
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buf[i] = 0;
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debug(5, "Room %d: '%s'", room, buf);
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}
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} else {
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for (int room; (room = _fileHandle->readByte()); ) {
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char buf[10];
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_fileHandle->read(buf, 9);
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buf[9] = 0;
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for (i = 0; i < 9; i++)
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buf[i] ^= 0xFF;
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debug(5, "Room %d: '%s'", room, buf);
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}
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}
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break;
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case MKID_BE('DROO'):
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case MKID_BE('DIRR'):
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readResTypeList(rtRoom);
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break;
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case MKID_BE('DSCR'):
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case MKID_BE('DIRS'):
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readResTypeList(rtScript);
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break;
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case MKID_BE('DCOS'):
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case MKID_BE('DIRC'):
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readResTypeList(rtCostume);
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break;
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case MKID_BE('MAXS'):
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readMAXS(itemsize);
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allocateArrays();
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break;
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case MKID_BE('DIRN'):
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case MKID_BE('DSOU'):
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readResTypeList(rtSound);
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break;
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case MKID_BE('AARY'):
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readArrayFromIndexFile();
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break;
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default:
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error("Bad ID %04X('%s') found in index file directory", blocktype,
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tag2str(blocktype));
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}
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}
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void ScummEngine::readArrayFromIndexFile() {
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error("readArrayFromIndexFile() not supported in pre-V6 games");
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}
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void ScummEngine::readResTypeList(int id) {
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int num;
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int i;
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debug(9, "readResTypeList(%s)", resTypeFromId(id));
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if (_game.version == 8)
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num = _fileHandle->readUint32LE();
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else
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num = _fileHandle->readUint16LE();
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if (num != _res->num[id]) {
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error("Invalid number of %ss (%d) in directory", resTypeFromId(id), num);
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}
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for (i = 0; i < num; i++) {
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_res->roomno[id][i] = _fileHandle->readByte();
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}
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for (i = 0; i < num; i++) {
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_res->roomoffs[id][i] = _fileHandle->readUint32LE();
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if (id == rtRoom && _game.heversion >= 70)
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_heV7RoomIntOffsets[i] = _res->roomoffs[id][i];
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}
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if (_game.heversion >= 70) {
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for (i = 0; i < num; i++) {
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_res->globsize[id][i] = _fileHandle->readUint32LE();
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}
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}
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}
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void ResourceManager::allocResTypeData(int id, uint32 tag, int num_, const char *name_, int mode_) {
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debug(9, "allocResTypeData(%s/%s,%s,%d,%d)", resTypeFromId(id), name_, tag2str(TO_BE_32(tag)), num_, mode_);
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assert(id >= 0 && id < (int)(ARRAYSIZE(this->mode)));
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if (num_ >= 8000)
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error("Too many %ss (%d) in directory", name_, num_);
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mode[id] = mode_;
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num[id] = num_;
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tags[id] = tag;
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name[id] = name_;
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address[id] = (byte **)calloc(num_, sizeof(void *));
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flags[id] = (byte *)calloc(num_, sizeof(byte));
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status[id] = (byte *)calloc(num_, sizeof(byte));
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if (mode_) {
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roomno[id] = (byte *)calloc(num_, sizeof(byte));
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roomoffs[id] = (uint32 *)calloc(num_, sizeof(uint32));
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}
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if (_vm->_game.heversion >= 70) {
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globsize[id] = (uint32 *)calloc(num_, sizeof(uint32));
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}
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}
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|
|
void ScummEngine::loadCharset(int no) {
|
|
int i;
|
|
byte *ptr;
|
|
|
|
debugC(DEBUG_GENERAL, "loadCharset(%d)", no);
|
|
|
|
/* FIXME - hack around crash in Indy4 (occurs if you try to load after dieing) */
|
|
if (_game.id == GID_INDY4 && no == 0)
|
|
no = 1;
|
|
|
|
/* for Humongous catalogs */
|
|
if (_game.heversion >= 70 && _numCharsets == 1) {
|
|
debug(0, "Not loading charset as it doesn't seem to exist?");
|
|
return;
|
|
}
|
|
|
|
assert(no < (int)sizeof(_charsetData) / 16);
|
|
assertRange(1, no, _numCharsets - 1, "charset");
|
|
|
|
ptr = getResourceAddress(rtCharset, no);
|
|
|
|
for (i = 0; i < 15; i++) {
|
|
_charsetData[no][i + 1] = ptr[i + 14];
|
|
}
|
|
}
|
|
|
|
void ScummEngine::nukeCharset(int i) {
|
|
assertRange(1, i, _numCharsets - 1, "charset");
|
|
_res->nukeResource(rtCharset, i);
|
|
}
|
|
|
|
void ScummEngine::ensureResourceLoaded(int type, int i) {
|
|
void *addr = NULL;
|
|
|
|
debugC(DEBUG_RESOURCE, "ensureResourceLoaded(%s,%d)", resTypeFromId(type), i);
|
|
|
|
if ((type == rtRoom) && i > 0x7F && _game.version < 7 && _game.heversion <= 71) {
|
|
i = _resourceMapper[i & 0x7F];
|
|
}
|
|
|
|
// FIXME: This check used to be "i==0". However, that causes
|
|
// problems when using this function to ensure charset 0 is loaded.
|
|
// This is done for many games, e.g. Zak256 or Indy3 (EGA and VGA).
|
|
// For now we restrict the check to anything which is not a charset.
|
|
// Question: Why was this check like that in the first place?
|
|
// Answer: costumes with an index of zero in the newer games at least.
|
|
// TODO: determine why the heck anything would try to load a costume
|
|
// with id 0. Is that "normal", or is it caused by yet another bug in
|
|
// our code base? After all we also have to add special cases for many
|
|
// of our script opcodes that check for the (invalid) actor 0... so
|
|
// maybe both issues are related...
|
|
if (type != rtCharset && i == 0)
|
|
return;
|
|
|
|
if (i <= _res->num[type])
|
|
addr = _res->address[type][i];
|
|
|
|
if (addr)
|
|
return;
|
|
|
|
loadResource(type, i);
|
|
|
|
if (_game.version == 5 && type == rtRoom && i == _roomResource)
|
|
VAR(VAR_ROOM_FLAG) = 1;
|
|
}
|
|
|
|
int ScummEngine::loadResource(int type, int idx) {
|
|
int roomNr;
|
|
uint32 fileOffs;
|
|
uint32 size, tag;
|
|
|
|
debugC(DEBUG_RESOURCE, "loadResource(%s,%d)", resTypeFromId(type), idx);
|
|
|
|
if (type == rtCharset && (_game.features & GF_SMALL_HEADER)) {
|
|
loadCharset(idx);
|
|
return 1;
|
|
}
|
|
|
|
roomNr = getResourceRoomNr(type, idx);
|
|
|
|
if (idx >= _res->num[type])
|
|
error("%s %d undefined %d %d", _res->name[type], idx, _res->num[type], roomNr);
|
|
|
|
if (roomNr == 0)
|
|
roomNr = _roomResource;
|
|
|
|
if (type == rtRoom) {
|
|
if (_game.version == 8)
|
|
fileOffs = 8;
|
|
else if (_game.heversion >= 70)
|
|
fileOffs = _heV7RoomIntOffsets[idx];
|
|
else
|
|
fileOffs = 0;
|
|
} else {
|
|
fileOffs = _res->roomoffs[type][idx];
|
|
if (fileOffs == RES_INVALID_OFFSET)
|
|
return 0;
|
|
}
|
|
|
|
openRoom(roomNr);
|
|
|
|
_fileHandle->seek(fileOffs + _fileOffset, SEEK_SET);
|
|
|
|
if (_game.features & GF_OLD_BUNDLE) {
|
|
if ((_game.version == 3) && !(_game.platform == Common::kPlatformAmiga) && (type == rtSound)) {
|
|
return readSoundResourceSmallHeader(idx);
|
|
} else {
|
|
size = _fileHandle->readUint16LE();
|
|
_fileHandle->seek(-2, SEEK_CUR);
|
|
}
|
|
} else if (_game.features & GF_SMALL_HEADER) {
|
|
if (_game.version == 4)
|
|
_fileHandle->seek(8, SEEK_CUR);
|
|
size = _fileHandle->readUint32LE();
|
|
tag = _fileHandle->readUint16LE();
|
|
_fileHandle->seek(-6, SEEK_CUR);
|
|
if ((type == rtSound) && !(_game.platform == Common::kPlatformAmiga) && !(_game.platform == Common::kPlatformFMTowns)) {
|
|
return readSoundResourceSmallHeader(idx);
|
|
}
|
|
} else {
|
|
if (type == rtSound) {
|
|
return readSoundResource(idx);
|
|
}
|
|
|
|
tag = _fileHandle->readUint32BE();
|
|
|
|
if (tag != _res->tags[type] && _game.heversion < 70) {
|
|
error("%s %d not in room %d at %d+%d in file %s",
|
|
_res->name[type], idx, roomNr,
|
|
_fileOffset, fileOffs, _fileHandle->getName());
|
|
}
|
|
|
|
size = _fileHandle->readUint32BE();
|
|
_fileHandle->seek(-8, SEEK_CUR);
|
|
}
|
|
_fileHandle->read(_res->createResource(type, idx, size), size);
|
|
|
|
// dump the resource if requested
|
|
if (_dumpScripts && type == rtScript) {
|
|
dumpResource("script-", idx, getResourceAddress(rtScript, idx));
|
|
}
|
|
|
|
if (!_fileHandle->ioFailed()) {
|
|
return 1;
|
|
}
|
|
|
|
_res->nukeResource(type, idx);
|
|
|
|
error("Cannot read resource");
|
|
}
|
|
|
|
int ScummEngine::getResourceRoomNr(int type, int idx) {
|
|
if (type == rtRoom && _game.heversion < 70)
|
|
return idx;
|
|
return _res->roomno[type][idx];
|
|
}
|
|
|
|
int ScummEngine::getResourceSize(int type, int idx) {
|
|
byte *ptr = getResourceAddress(type, idx);
|
|
assert(ptr);
|
|
MemBlkHeader *hdr = (MemBlkHeader *)(ptr - sizeof(MemBlkHeader));
|
|
|
|
return hdr->size;
|
|
}
|
|
|
|
byte *ScummEngine::getResourceAddress(int type, int idx) {
|
|
byte *ptr;
|
|
|
|
if (_game.heversion >= 80 && type == rtString)
|
|
idx &= ~0x33539000;
|
|
|
|
if (!_res->validateResource("getResourceAddress", type, idx))
|
|
return NULL;
|
|
|
|
if (!_res->address[type]) {
|
|
debugC(DEBUG_RESOURCE, "getResourceAddress(%s,%d), _res->address[type] == NULL", resTypeFromId(type), idx);
|
|
return NULL;
|
|
}
|
|
|
|
if (_res->mode[type] && !_res->address[type][idx]) {
|
|
ensureResourceLoaded(type, idx);
|
|
}
|
|
|
|
if (!(ptr = (byte *)_res->address[type][idx])) {
|
|
debugC(DEBUG_RESOURCE, "getResourceAddress(%s,%d) == NULL", resTypeFromId(type), idx);
|
|
return NULL;
|
|
}
|
|
|
|
_res->setResourceCounter(type, idx, 1);
|
|
|
|
debugC(DEBUG_RESOURCE, "getResourceAddress(%s,%d) == %p", resTypeFromId(type), idx, ptr + sizeof(MemBlkHeader));
|
|
return ptr + sizeof(MemBlkHeader);
|
|
}
|
|
|
|
byte *ScummEngine::getStringAddress(int i) {
|
|
byte *addr = getResourceAddress(rtString, i);
|
|
return addr;
|
|
}
|
|
|
|
byte *ScummEngine_v6::getStringAddress(int i) {
|
|
byte *addr = getResourceAddress(rtString, i);
|
|
if (addr == NULL)
|
|
return NULL;
|
|
// Skip over the ArrayHeader
|
|
return addr + 6;
|
|
}
|
|
|
|
byte *ScummEngine::getStringAddressVar(int i) {
|
|
return getStringAddress(_scummVars[i]);
|
|
}
|
|
|
|
void ResourceManager::increaseExpireCounter() {
|
|
if (!(++_expireCounter)) {
|
|
increaseResourceCounter();
|
|
}
|
|
}
|
|
|
|
void ResourceManager::increaseResourceCounter() {
|
|
int i, j;
|
|
byte counter;
|
|
|
|
for (i = rtFirst; i <= rtLast; i++) {
|
|
for (j = num[i]; --j >= 0;) {
|
|
counter = flags[i][j] & RF_USAGE;
|
|
if (counter && counter < RF_USAGE_MAX) {
|
|
setResourceCounter(i, j, counter + 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ResourceManager::setResourceCounter(int type, int idx, byte flag) {
|
|
flags[type][idx] &= ~RF_USAGE;
|
|
flags[type][idx] |= flag;
|
|
}
|
|
|
|
/* 2 bytes safety area to make "precaching" of bytes in the gdi drawer easier */
|
|
#define SAFETY_AREA 2
|
|
|
|
byte *ResourceManager::createResource(int type, int idx, uint32 size) {
|
|
byte *ptr;
|
|
|
|
debugC(DEBUG_RESOURCE, "_res->createResource(%s,%d,%d)", resTypeFromId(type), idx, size);
|
|
|
|
if (!validateResource("allocating", type, idx))
|
|
return NULL;
|
|
|
|
if (_vm->_game.version <= 2) {
|
|
// Nuking and reloading a resource can be harmful in some
|
|
// cases. For instance, Zak tries to reload the intro music
|
|
// while it's playing. See bug #1253171.
|
|
|
|
if (address[type][idx] && (type == rtSound || type == rtScript || type == rtCostume))
|
|
return address[type][idx] + sizeof(MemBlkHeader);
|
|
}
|
|
|
|
nukeResource(type, idx);
|
|
|
|
expireResources(size);
|
|
|
|
ptr = (byte *)calloc(size + sizeof(MemBlkHeader) + SAFETY_AREA, 1);
|
|
if (ptr == NULL) {
|
|
error("createResource(%s,%d): Out of memory while allocating %d", resTypeFromId(type), idx, size);
|
|
}
|
|
|
|
_allocatedSize += size;
|
|
|
|
address[type][idx] = ptr;
|
|
((MemBlkHeader *)ptr)->size = size;
|
|
setResourceCounter(type, idx, 1);
|
|
return ptr + sizeof(MemBlkHeader); /* skip header */
|
|
}
|
|
|
|
ResourceManager::ResourceManager(ScummEngine *vm) {
|
|
memset(this, 0, sizeof(ResourceManager));
|
|
_vm = vm;
|
|
// _allocatedSize = 0;
|
|
}
|
|
|
|
ResourceManager::~ResourceManager() {
|
|
freeResources();
|
|
}
|
|
|
|
void ResourceManager::setHeapThreshold(int min, int max) {
|
|
assert(0 < max);
|
|
assert(min <= max);
|
|
_maxHeapThreshold = max;
|
|
_minHeapThreshold = min;
|
|
}
|
|
|
|
bool ResourceManager::validateResource(const char *str, int type, int idx) const {
|
|
if (type < rtFirst || type > rtLast || (uint) idx >= (uint)num[type]) {
|
|
error("%s Illegal Glob type %s (%d) num %d", str, resTypeFromId(type), type, idx);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void ResourceManager::nukeResource(int type, int idx) {
|
|
byte *ptr;
|
|
|
|
if (!address[type])
|
|
return;
|
|
|
|
assert(idx >= 0 && idx < num[type]);
|
|
|
|
ptr = address[type][idx];
|
|
if (ptr != NULL) {
|
|
debugC(DEBUG_RESOURCE, "nukeResource(%s,%d)", resTypeFromId(type), idx);
|
|
address[type][idx] = 0;
|
|
flags[type][idx] = 0;
|
|
status[type][idx] &= ~RS_MODIFIED;
|
|
_allocatedSize -= ((MemBlkHeader *)ptr)->size;
|
|
free(ptr);
|
|
}
|
|
}
|
|
|
|
const byte *ScummEngine::findResourceData(uint32 tag, const byte *ptr) {
|
|
if (_game.features & GF_OLD_BUNDLE)
|
|
error("findResourceData must not be used in GF_OLD_BUNDLE games");
|
|
else if (_game.features & GF_SMALL_HEADER)
|
|
ptr = findResourceSmall(tag, ptr);
|
|
else
|
|
ptr = findResource(tag, ptr);
|
|
|
|
if (ptr == NULL)
|
|
return NULL;
|
|
return ptr + _resourceHeaderSize;
|
|
}
|
|
|
|
int ScummEngine::getResourceDataSize(const byte *ptr) const {
|
|
if (ptr == NULL)
|
|
return 0;
|
|
|
|
if (_game.features & GF_OLD_BUNDLE)
|
|
return READ_LE_UINT16(ptr) - _resourceHeaderSize;
|
|
else if (_game.features & GF_SMALL_HEADER)
|
|
return READ_LE_UINT32(ptr) - _resourceHeaderSize;
|
|
else
|
|
return READ_BE_UINT32(ptr - 4) - _resourceHeaderSize;
|
|
}
|
|
|
|
void ResourceManager::lock(int type, int i) {
|
|
if (!validateResource("Locking", type, i))
|
|
return;
|
|
flags[type][i] |= RF_LOCK;
|
|
}
|
|
|
|
void ResourceManager::unlock(int type, int i) {
|
|
if (!validateResource("Unlocking", type, i))
|
|
return;
|
|
flags[type][i] &= ~RF_LOCK;
|
|
}
|
|
|
|
bool ResourceManager::isLocked(int type, int i) const {
|
|
if (!validateResource("isLocked", type, i))
|
|
return false;
|
|
return (flags[type][i] & RF_LOCK) != 0;
|
|
}
|
|
|
|
bool ScummEngine::isResourceInUse(int type, int i) const {
|
|
if (!_res->validateResource("isResourceInUse", type, i))
|
|
return false;
|
|
switch (type) {
|
|
case rtRoom:
|
|
return _roomResource == (byte)i;
|
|
case rtRoomImage:
|
|
return _roomResource == (byte)i;
|
|
case rtRoomScripts:
|
|
return _roomResource == (byte)i;
|
|
case rtScript:
|
|
return isScriptInUse(i);
|
|
case rtCostume:
|
|
return isCostumeInUse(i);
|
|
case rtSound:
|
|
return _sound->isSoundInUse(i);
|
|
case rtCharset:
|
|
return _charset->getCurID() == i;
|
|
case rtImage:
|
|
return _res->isModified(type, i) != 0;
|
|
case rtSpoolBuffer:
|
|
return _sound->isSoundRunning(10000 + i) != 0;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void ResourceManager::setModified(int type, int i) {
|
|
if (!validateResource("Modified", type, i))
|
|
return;
|
|
status[type][i] |= RS_MODIFIED;
|
|
}
|
|
|
|
bool ResourceManager::isModified(int type, int i) const {
|
|
if (!validateResource("isModified", type, i))
|
|
return false;
|
|
return (status[type][i] & RS_MODIFIED) != 0;
|
|
}
|
|
|
|
void ResourceManager::expireResources(uint32 size) {
|
|
int i, j;
|
|
byte flag;
|
|
byte best_counter;
|
|
int best_type, best_res = 0;
|
|
uint32 oldAllocatedSize;
|
|
|
|
if (_expireCounter != 0xFF) {
|
|
_expireCounter = 0xFF;
|
|
increaseResourceCounter();
|
|
}
|
|
|
|
if (size + _allocatedSize < _maxHeapThreshold)
|
|
return;
|
|
|
|
oldAllocatedSize = _allocatedSize;
|
|
|
|
do {
|
|
best_type = 0;
|
|
best_counter = 2;
|
|
|
|
for (i = rtFirst; i <= rtLast; i++)
|
|
if (mode[i]) {
|
|
for (j = num[i]; --j >= 0;) {
|
|
flag = flags[i][j];
|
|
if (!(flag & RF_LOCK) && flag >= best_counter && address[i][j] && !_vm->isResourceInUse(i, j)) {
|
|
best_counter = flag;
|
|
best_type = i;
|
|
best_res = j;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!best_type)
|
|
break;
|
|
nukeResource(best_type, best_res);
|
|
} while (size + _allocatedSize > _minHeapThreshold);
|
|
|
|
increaseResourceCounter();
|
|
|
|
debugC(DEBUG_RESOURCE, "Expired resources, mem %d -> %d", oldAllocatedSize, _allocatedSize);
|
|
}
|
|
|
|
void ResourceManager::freeResources() {
|
|
int i, j;
|
|
for (i = rtFirst; i <= rtLast; i++) {
|
|
for (j = num[i]; --j >= 0;) {
|
|
if (isResourceLoaded(i, j))
|
|
nukeResource(i, j);
|
|
}
|
|
free(address[i]);
|
|
free(flags[i]);
|
|
free(status[i]);
|
|
free(roomno[i]);
|
|
free(roomoffs[i]);
|
|
|
|
free(globsize[i]);
|
|
}
|
|
}
|
|
|
|
void ScummEngine::loadPtrToResource(int type, int resindex, const byte *source) {
|
|
byte *alloced;
|
|
int i, len;
|
|
|
|
_res->nukeResource(type, resindex);
|
|
|
|
len = resStrLen(source) + 1;
|
|
|
|
if (len <= 0)
|
|
return;
|
|
|
|
alloced = _res->createResource(type, resindex, len);
|
|
|
|
if (!source) {
|
|
alloced[0] = fetchScriptByte();
|
|
for (i = 1; i < len; i++)
|
|
alloced[i] = *_scriptPointer++;
|
|
} else {
|
|
for (i = 0; i < len; i++)
|
|
alloced[i] = source[i];
|
|
}
|
|
}
|
|
|
|
bool ResourceManager::isResourceLoaded(int type, int idx) const {
|
|
if (!validateResource("isResourceLoaded", type, idx))
|
|
return false;
|
|
return address[type][idx] != NULL;
|
|
}
|
|
|
|
void ResourceManager::resourceStats() {
|
|
int i, j;
|
|
uint32 lockedSize = 0, lockedNum = 0;
|
|
byte flag;
|
|
|
|
for (i = rtFirst; i <= rtLast; i++)
|
|
for (j = num[i]; --j >= 0;) {
|
|
flag = flags[i][j];
|
|
if (flag & RF_LOCK && address[i][j]) {
|
|
lockedSize += ((MemBlkHeader *)address[i][j])->size;
|
|
lockedNum++;
|
|
}
|
|
}
|
|
|
|
debug(1, "Total allocated size=%d, locked=%d(%d)", _allocatedSize, lockedSize, lockedNum);
|
|
}
|
|
|
|
void ScummEngine_v5::readMAXS(int blockSize) {
|
|
debug(9, "ScummEngine_v5 readMAXS: MAXS has blocksize %d", blockSize);
|
|
|
|
_numVariables = _fileHandle->readUint16LE(); // 800
|
|
_fileHandle->readUint16LE(); // 16
|
|
_numBitVariables = _fileHandle->readUint16LE(); // 2048
|
|
_numLocalObjects = _fileHandle->readUint16LE(); // 200
|
|
_numArray = 50;
|
|
_numVerbs = 100;
|
|
// Used to be 50, which wasn't enough for MI2 and FOA. See bugs
|
|
// #933610, #936323 and #941275.
|
|
_numNewNames = 150;
|
|
_objectRoomTable = NULL;
|
|
|
|
_fileHandle->readUint16LE(); // 50
|
|
_numCharsets = _fileHandle->readUint16LE(); // 9
|
|
_fileHandle->readUint16LE(); // 100
|
|
_fileHandle->readUint16LE(); // 50
|
|
_numInventory = _fileHandle->readUint16LE(); // 80
|
|
_numGlobalScripts = 200;
|
|
|
|
_shadowPaletteSize = 256;
|
|
|
|
_numFlObject = 50;
|
|
|
|
if (_shadowPaletteSize)
|
|
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
|
|
}
|
|
|
|
#ifdef ENABLE_SCUMM_7_8
|
|
void ScummEngine_v8::readMAXS(int blockSize) {
|
|
debug(9, "ScummEngine_v8 readMAXS: MAXS has blocksize %d", blockSize);
|
|
|
|
_fileHandle->seek(50, SEEK_CUR); // Skip over SCUMM engine version
|
|
_fileHandle->seek(50, SEEK_CUR); // Skip over data file version
|
|
_numVariables = _fileHandle->readUint32LE(); // 1500
|
|
_numBitVariables = _fileHandle->readUint32LE(); // 2048
|
|
_fileHandle->readUint32LE(); // 40
|
|
_numScripts = _fileHandle->readUint32LE(); // 458
|
|
_numSounds = _fileHandle->readUint32LE(); // 789
|
|
_numCharsets = _fileHandle->readUint32LE(); // 1
|
|
_numCostumes = _fileHandle->readUint32LE(); // 446
|
|
_numRooms = _fileHandle->readUint32LE(); // 95
|
|
_fileHandle->readUint32LE(); // 80
|
|
_numGlobalObjects = _fileHandle->readUint32LE(); // 1401
|
|
_fileHandle->readUint32LE(); // 60
|
|
_numLocalObjects = _fileHandle->readUint32LE(); // 200
|
|
_numNewNames = _fileHandle->readUint32LE(); // 100
|
|
_numFlObject = _fileHandle->readUint32LE(); // 128
|
|
_numInventory = _fileHandle->readUint32LE(); // 80
|
|
_numArray = _fileHandle->readUint32LE(); // 200
|
|
_numVerbs = _fileHandle->readUint32LE(); // 50
|
|
|
|
_objectRoomTable = (byte *)calloc(_numGlobalObjects, 1);
|
|
_numGlobalScripts = 2000;
|
|
|
|
_shadowPaletteSize = NUM_SHADOW_PALETTE * 256;
|
|
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
|
|
}
|
|
|
|
void ScummEngine_v7::readMAXS(int blockSize) {
|
|
debug(9, "ScummEngine_v7 readMAXS: MAXS has blocksize %d", blockSize);
|
|
|
|
_fileHandle->seek(50, SEEK_CUR); // Skip over SCUMM engine version
|
|
_fileHandle->seek(50, SEEK_CUR); // Skip over data file version
|
|
_numVariables = _fileHandle->readUint16LE();
|
|
_numBitVariables = _fileHandle->readUint16LE();
|
|
_fileHandle->readUint16LE();
|
|
_numGlobalObjects = _fileHandle->readUint16LE();
|
|
_numLocalObjects = _fileHandle->readUint16LE();
|
|
_numNewNames = _fileHandle->readUint16LE();
|
|
_numVerbs = _fileHandle->readUint16LE();
|
|
_numFlObject = _fileHandle->readUint16LE();
|
|
_numInventory = _fileHandle->readUint16LE();
|
|
_numArray = _fileHandle->readUint16LE();
|
|
_numRooms = _fileHandle->readUint16LE();
|
|
_numScripts = _fileHandle->readUint16LE();
|
|
_numSounds = _fileHandle->readUint16LE();
|
|
_numCharsets = _fileHandle->readUint16LE();
|
|
_numCostumes = _fileHandle->readUint16LE();
|
|
|
|
_objectRoomTable = (byte *)calloc(_numGlobalObjects, 1);
|
|
|
|
if ((_game.id == GID_FT) && (_game.features & GF_DEMO) &&
|
|
(_game.platform == Common::kPlatformPC))
|
|
_numGlobalScripts = 300;
|
|
else
|
|
_numGlobalScripts = 2000;
|
|
|
|
_shadowPaletteSize = NUM_SHADOW_PALETTE * 256;
|
|
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
|
|
}
|
|
#endif
|
|
|
|
void ScummEngine_v6::readMAXS(int blockSize) {
|
|
if (blockSize == 38) {
|
|
debug(0, "ScummEngine_v6 readMAXS: MAXS has blocksize %d", blockSize);
|
|
|
|
_numVariables = _fileHandle->readUint16LE();
|
|
_fileHandle->readUint16LE();
|
|
_numBitVariables = _fileHandle->readUint16LE();
|
|
_numLocalObjects = _fileHandle->readUint16LE();
|
|
_numArray = _fileHandle->readUint16LE();
|
|
_fileHandle->readUint16LE();
|
|
_numVerbs = _fileHandle->readUint16LE();
|
|
_numFlObject = _fileHandle->readUint16LE();
|
|
_numInventory = _fileHandle->readUint16LE();
|
|
_numRooms = _fileHandle->readUint16LE();
|
|
_numScripts = _fileHandle->readUint16LE();
|
|
_numSounds = _fileHandle->readUint16LE();
|
|
_numCharsets = _fileHandle->readUint16LE();
|
|
_numCostumes = _fileHandle->readUint16LE();
|
|
_numGlobalObjects = _fileHandle->readUint16LE();
|
|
_numNewNames = 50;
|
|
|
|
_objectRoomTable = NULL;
|
|
_numGlobalScripts = 200;
|
|
|
|
if (_game.heversion >= 70) {
|
|
_objectRoomTable = (byte *)calloc(_numGlobalObjects, 1);
|
|
}
|
|
|
|
if (_game.heversion <= 70) {
|
|
_shadowPaletteSize = 256;
|
|
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
|
|
}
|
|
} else
|
|
error("readMAXS(%d) failed to read MAXS data", blockSize);
|
|
}
|
|
|
|
void ScummEngine::readGlobalObjects() {
|
|
int i;
|
|
int num = _fileHandle->readUint16LE();
|
|
assert(num == _numGlobalObjects);
|
|
assert(_objectStateTable);
|
|
assert(_objectOwnerTable);
|
|
|
|
_fileHandle->read(_objectOwnerTable, num);
|
|
for (i = 0; i < num; i++) {
|
|
_objectStateTable[i] = _objectOwnerTable[i] >> OF_STATE_SHL;
|
|
_objectOwnerTable[i] &= OF_OWNER_MASK;
|
|
}
|
|
|
|
_fileHandle->read(_classData, num * sizeof(uint32));
|
|
|
|
#if defined(SCUMM_BIG_ENDIAN)
|
|
// Correct the endianess if necessary
|
|
for (i = 0; i != num; i++)
|
|
_classData[i] = FROM_LE_32(_classData[i]);
|
|
#endif
|
|
}
|
|
|
|
#ifdef ENABLE_SCUMM_7_8
|
|
void ScummEngine_v8::readGlobalObjects() {
|
|
int i;
|
|
int num = _fileHandle->readUint32LE();
|
|
assert(num == _numGlobalObjects);
|
|
assert(_objectStateTable);
|
|
assert(_objectOwnerTable);
|
|
|
|
_objectIDMap = new ObjectNameId[num];
|
|
_objectIDMapSize = num;
|
|
for (i = 0; i < num; i++) {
|
|
// Add to object name-to-id map
|
|
_fileHandle->read(_objectIDMap[i].name, 40);
|
|
_objectIDMap[i].id = i;
|
|
|
|
_objectStateTable[i] = _fileHandle->readByte();
|
|
_objectRoomTable[i] = _fileHandle->readByte();
|
|
_classData[i] = _fileHandle->readUint32LE();
|
|
}
|
|
memset(_objectOwnerTable, 0xFF, num);
|
|
|
|
// Finally, sort the object name->ID map, so we can later use
|
|
// bsearch on it. For this we (ab)use strcmp, which works fine
|
|
// since the table entries start with a string.
|
|
qsort(_objectIDMap, _objectIDMapSize, sizeof(ObjectNameId),
|
|
(int (*)(const void*, const void*))strcmp);
|
|
}
|
|
|
|
void ScummEngine_v7::readGlobalObjects() {
|
|
int num = _fileHandle->readUint16LE();
|
|
assert(num == _numGlobalObjects);
|
|
assert(_objectStateTable);
|
|
assert(_objectOwnerTable);
|
|
|
|
_fileHandle->read(_objectStateTable, num);
|
|
_fileHandle->read(_objectRoomTable, num);
|
|
memset(_objectOwnerTable, 0xFF, num);
|
|
|
|
_fileHandle->read(_classData, num * sizeof(uint32));
|
|
|
|
#if defined(SCUMM_BIG_ENDIAN)
|
|
// Correct the endianess if necessary
|
|
for (int i = 0; i != num; i++)
|
|
_classData[i] = FROM_LE_32(_classData[i]);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
void ScummEngine::allocateArrays() {
|
|
// Note: Buffers are now allocated in scummMain to allow for
|
|
// early GUI init.
|
|
|
|
_objectOwnerTable = (byte *)calloc(_numGlobalObjects, 1);
|
|
_objectStateTable = (byte *)calloc(_numGlobalObjects, 1);
|
|
_classData = (uint32 *)calloc(_numGlobalObjects, sizeof(uint32));
|
|
_newNames = (uint16 *)calloc(_numNewNames, sizeof(uint16));
|
|
|
|
_inventory = (uint16 *)calloc(_numInventory, sizeof(uint16));
|
|
_verbs = (VerbSlot *)calloc(_numVerbs, sizeof(VerbSlot));
|
|
_objs = (ObjectData *)calloc(_numLocalObjects, sizeof(ObjectData));
|
|
_roomVars = (int32 *)calloc(_numRoomVariables, sizeof(int32));
|
|
_scummVars = (int32 *)calloc(_numVariables, sizeof(int32));
|
|
_bitVars = (byte *)calloc(_numBitVariables >> 3, 1);
|
|
if (_game.heversion >= 60) {
|
|
_arraySlot = (byte *)calloc(_numArray, 1);
|
|
}
|
|
|
|
_res->allocResTypeData(rtCostume, (_game.features & GF_NEW_COSTUMES) ? MKID_BE('AKOS') : MKID_BE('COST'),
|
|
_numCostumes, "costume", 1);
|
|
_res->allocResTypeData(rtRoom, MKID_BE('ROOM'), _numRooms, "room", 1);
|
|
_res->allocResTypeData(rtRoomImage, MKID_BE('RMIM'), _numRooms, "room image", 1);
|
|
_res->allocResTypeData(rtRoomScripts, MKID_BE('RMSC'), _numRooms, "room script", 1);
|
|
_res->allocResTypeData(rtSound, MKID_BE('SOUN'), _numSounds, "sound", 2);
|
|
_res->allocResTypeData(rtScript, MKID_BE('SCRP'), _numScripts, "script", 1);
|
|
_res->allocResTypeData(rtCharset, MKID_BE('CHAR'), _numCharsets, "charset", 1);
|
|
_res->allocResTypeData(rtObjectName, 0, _numNewNames, "new name", 0);
|
|
_res->allocResTypeData(rtInventory, 0, _numInventory, "inventory", 0);
|
|
_res->allocResTypeData(rtTemp, 0, 10, "temp", 0);
|
|
_res->allocResTypeData(rtScaleTable, 0, 5, "scale table", 0);
|
|
_res->allocResTypeData(rtActorName, 0, _numActors, "actor name", 0);
|
|
_res->allocResTypeData(rtVerb, 0, _numVerbs, "verb", 0);
|
|
_res->allocResTypeData(rtString, 0, _numArray, "array", 0);
|
|
_res->allocResTypeData(rtFlObject, 0, _numFlObject, "flobject", 0);
|
|
_res->allocResTypeData(rtMatrix, 0, 10, "boxes", 0);
|
|
_res->allocResTypeData(rtImage, MKID_BE('AWIZ'), _numImages, "images", 1);
|
|
_res->allocResTypeData(rtTalkie, MKID_BE('TLKE'), _numTalkies, "talkie", 1);
|
|
|
|
if (_game.heversion >= 70) {
|
|
_res->allocResTypeData(rtSpoolBuffer, 0, 9, "spool buffer", 1);
|
|
_heV7RoomIntOffsets = (uint32 *)calloc(_numRooms, sizeof(uint32));
|
|
}
|
|
}
|
|
|
|
void ScummEngine::dumpResource(const char *tag, int idx, const byte *ptr, int length) {
|
|
char buf[256];
|
|
Common::DumpFile out;
|
|
|
|
uint32 size;
|
|
if (length >= 0)
|
|
size = length;
|
|
else if (_game.features & GF_OLD_BUNDLE)
|
|
size = READ_LE_UINT16(ptr);
|
|
else if (_game.features & GF_SMALL_HEADER)
|
|
size = READ_LE_UINT32(ptr);
|
|
else
|
|
size = READ_BE_UINT32(ptr + 4);
|
|
|
|
sprintf(buf, "dumps/%s%d.dmp", tag, idx);
|
|
|
|
out.open(buf);
|
|
if (out.isOpen() == false)
|
|
return;
|
|
out.write(ptr, size);
|
|
out.close();
|
|
}
|
|
|
|
ResourceIterator::ResourceIterator(const byte *searchin, bool smallHeader)
|
|
: _ptr(searchin), _smallHeader(smallHeader) {
|
|
assert(searchin);
|
|
if (_smallHeader) {
|
|
_size = READ_LE_UINT32(searchin);
|
|
_pos = 6;
|
|
_ptr = searchin + 6;
|
|
} else {
|
|
_size = READ_BE_UINT32(searchin + 4);
|
|
_pos = 8;
|
|
_ptr = searchin + 8;
|
|
}
|
|
|
|
}
|
|
|
|
const byte *ResourceIterator::findNext(uint32 tag) {
|
|
uint32 size = 0;
|
|
const byte *result = 0;
|
|
|
|
if (_smallHeader) {
|
|
uint16 smallTag = newTag2Old(tag);
|
|
do {
|
|
if (_pos >= _size)
|
|
return 0;
|
|
|
|
result = _ptr;
|
|
size = READ_LE_UINT32(result);
|
|
if ((int32)size <= 0)
|
|
return 0; // Avoid endless loop
|
|
|
|
_pos += size;
|
|
_ptr += size;
|
|
} while (READ_LE_UINT16(result + 4) != smallTag);
|
|
} else {
|
|
do {
|
|
if (_pos >= _size)
|
|
return 0;
|
|
|
|
result = _ptr;
|
|
size = READ_BE_UINT32(result + 4);
|
|
if ((int32)size <= 0)
|
|
return 0; // Avoid endless loop
|
|
|
|
_pos += size;
|
|
_ptr += size;
|
|
} while (READ_BE_UINT32(result) != tag);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
const byte *ScummEngine::findResource(uint32 tag, const byte *searchin) {
|
|
uint32 curpos, totalsize, size;
|
|
|
|
debugC(DEBUG_RESOURCE, "findResource(%s, %lx)", tag2str(tag), searchin);
|
|
|
|
if (!searchin) {
|
|
if (_game.heversion >= 70) {
|
|
searchin = _resourceLastSearchBuf;
|
|
totalsize = _resourceLastSearchSize;
|
|
curpos = 0;
|
|
} else {
|
|
assert(searchin);
|
|
return NULL;
|
|
}
|
|
} else {
|
|
searchin += 4;
|
|
_resourceLastSearchSize = totalsize = READ_BE_UINT32(searchin);
|
|
curpos = 8;
|
|
searchin += 4;
|
|
}
|
|
|
|
while (curpos < totalsize) {
|
|
if (READ_BE_UINT32(searchin) == tag) {
|
|
_resourceLastSearchBuf = searchin;
|
|
return searchin;
|
|
}
|
|
|
|
size = READ_BE_UINT32(searchin + 4);
|
|
if ((int32)size <= 0) {
|
|
error("(%s) Not found in %d... illegal block len %d", tag2str(tag), 0, size);
|
|
return NULL;
|
|
}
|
|
|
|
curpos += size;
|
|
searchin += size;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const byte *findResourceSmall(uint32 tag, const byte *searchin) {
|
|
uint32 curpos, totalsize, size;
|
|
uint16 smallTag;
|
|
|
|
smallTag = newTag2Old(tag);
|
|
if (smallTag == 0)
|
|
return NULL;
|
|
|
|
assert(searchin);
|
|
|
|
totalsize = READ_LE_UINT32(searchin);
|
|
searchin += 6;
|
|
curpos = 6;
|
|
|
|
while (curpos < totalsize) {
|
|
size = READ_LE_UINT32(searchin);
|
|
|
|
if (READ_LE_UINT16(searchin + 4) == smallTag)
|
|
return searchin;
|
|
|
|
if ((int32)size <= 0) {
|
|
error("(%s) Not found in %d... illegal block len %d", tag2str(tag), 0, size);
|
|
return NULL;
|
|
}
|
|
|
|
curpos += size;
|
|
searchin += size;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
uint16 newTag2Old(uint32 newTag) {
|
|
switch (newTag) {
|
|
case (MKID_BE('RMHD')):
|
|
return (0x4448); // HD
|
|
case (MKID_BE('IM00')):
|
|
return (0x4D42); // BM
|
|
case (MKID_BE('EXCD')):
|
|
return (0x5845); // EX
|
|
case (MKID_BE('ENCD')):
|
|
return (0x4E45); // EN
|
|
case (MKID_BE('SCAL')):
|
|
return (0x4153); // SA
|
|
case (MKID_BE('LSCR')):
|
|
return (0x534C); // LS
|
|
case (MKID_BE('OBCD')):
|
|
return (0x434F); // OC
|
|
case (MKID_BE('OBIM')):
|
|
return (0x494F); // OI
|
|
case (MKID_BE('SMAP')):
|
|
return (0x4D42); // BM
|
|
case (MKID_BE('CLUT')):
|
|
return (0x4150); // PA
|
|
case (MKID_BE('BOXD')):
|
|
return (0x5842); // BX
|
|
case (MKID_BE('CYCL')):
|
|
return (0x4343); // CC
|
|
case (MKID_BE('EPAL')):
|
|
return (0x5053); // SP
|
|
default:
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
const char *resTypeFromId(int id) {
|
|
static char buf[100];
|
|
|
|
switch (id) {
|
|
case rtRoom:
|
|
return "Room";
|
|
case rtScript:
|
|
return "Script";
|
|
case rtCostume:
|
|
return "Costume";
|
|
case rtSound:
|
|
return "Sound";
|
|
case rtInventory:
|
|
return "Inventory";
|
|
case rtCharset:
|
|
return "Charset";
|
|
case rtString:
|
|
return "String";
|
|
case rtVerb:
|
|
return "Verb";
|
|
case rtActorName:
|
|
return "ActorName";
|
|
case rtBuffer:
|
|
return "Buffer";
|
|
case rtScaleTable:
|
|
return "ScaleTable";
|
|
case rtTemp:
|
|
return "Temp";
|
|
case rtFlObject:
|
|
return "FlObject";
|
|
case rtMatrix:
|
|
return "Matrix";
|
|
case rtBox:
|
|
return "Box";
|
|
case rtObjectName:
|
|
return "ObjectName";
|
|
case rtRoomScripts:
|
|
return "RoomScripts";
|
|
case rtRoomImage:
|
|
return "RoomImage";
|
|
case rtImage:
|
|
return "Image";
|
|
case rtTalkie:
|
|
return "Talkie";
|
|
case rtSpoolBuffer:
|
|
return "SpoolBuffer";
|
|
case rtNumTypes:
|
|
return "NumTypes";
|
|
default:
|
|
sprintf(buf, "%d", id);
|
|
return buf;
|
|
}
|
|
}
|
|
|
|
} // End of namespace Scumm
|