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engines/scumm/resource_v2.cpp
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engines/scumm/resource_v2.cpp
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/* 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "scumm/file.h"
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#include "scumm/scumm_v2.h"
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#include "scumm/resource.h"
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namespace Scumm {
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void ScummEngine_v2::readClassicIndexFile() {
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int i;
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if (_game.id == GID_MANIAC) {
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if (_game.version == 0) {
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_numGlobalObjects = 256;
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_numRooms = 55;
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_numCostumes = 25;
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if (_game.features & GF_DEMO) {
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_numScripts = 55;
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_numSounds = 40;
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} else {
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_numScripts = 160;
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_numSounds = 70;
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}
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} else if (_game.platform == Common::kPlatformNES) {
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_numGlobalObjects = 775;
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_numRooms = 55;
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// costumes 25-36 are special. see v1MMNEScostTables[] in costume.cpp
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// costumes 37-76 are room graphics resources
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// costume 77 is a character set translation table
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// costume 78 is a preposition list
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// costume 79 is unused but allocated, so the total is a nice even number :)
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_numCostumes = 80;
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_numScripts = 200;
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_numSounds = 100;
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} else {
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_numGlobalObjects = 800;
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_numRooms = 55;
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_numCostumes = 35;
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_numScripts = 200;
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_numSounds = 100;
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}
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} else if (_game.id == GID_ZAK) {
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if (_game.platform == Common::kPlatformC64) {
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_numGlobalObjects = 775;
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_numRooms = 59;
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_numCostumes = 38;
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_numScripts = 155;
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_numSounds = 127;
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} else {
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_numGlobalObjects = 775;
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_numRooms = 61;
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_numCostumes = 37;
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_numScripts = 155;
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_numSounds = 120;
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}
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}
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_fileHandle->seek(0, SEEK_SET);
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readMAXS(0);
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allocateArrays();
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_fileHandle->readUint16LE(); /* version magic number */
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for (i = 0; i != _numGlobalObjects; i++) {
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byte tmp = _fileHandle->readByte();
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_objectOwnerTable[i] = tmp & OF_OWNER_MASK;
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_objectStateTable[i] = tmp >> OF_STATE_SHL;
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}
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for (i = 0; i < _numRooms; i++) {
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_res->_types[rtRoom][i]._roomno = i;
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}
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_fileHandle->seek(_numRooms, SEEK_CUR);
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for (i = 0; i < _numRooms; i++) {
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_res->_types[rtRoom][i]._roomoffs = _fileHandle->readUint16LE();
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if (_res->_types[rtRoom][i]._roomoffs == 0xFFFF)
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_res->_types[rtRoom][i]._roomoffs = (uint32)RES_INVALID_OFFSET;
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}
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for (i = 0; i < _numCostumes; i++) {
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_res->_types[rtCostume][i]._roomno = _fileHandle->readByte();
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}
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for (i = 0; i < _numCostumes; i++) {
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_res->_types[rtCostume][i]._roomoffs = _fileHandle->readUint16LE();
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if (_res->_types[rtCostume][i]._roomoffs == 0xFFFF)
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_res->_types[rtCostume][i]._roomoffs = (uint32)RES_INVALID_OFFSET;
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}
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for (i = 0; i < _numScripts; i++) {
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_res->_types[rtScript][i]._roomno = _fileHandle->readByte();
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}
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for (i = 0; i < _numScripts; i++) {
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_res->_types[rtScript][i]._roomoffs = _fileHandle->readUint16LE();
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if (_res->_types[rtScript][i]._roomoffs == 0xFFFF)
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_res->_types[rtScript][i]._roomoffs = (uint32)RES_INVALID_OFFSET;
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}
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for (i = 0; i < _numSounds; i++) {
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_res->_types[rtSound][i]._roomno = _fileHandle->readByte();
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}
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for (i = 0; i < _numSounds; i++) {
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_res->_types[rtSound][i]._roomoffs = _fileHandle->readUint16LE();
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if (_res->_types[rtSound][i]._roomoffs == 0xFFFF)
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_res->_types[rtSound][i]._roomoffs = (uint32)RES_INVALID_OFFSET;
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}
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}
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void ScummEngine_v2::readEnhancedIndexFile() {
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_numGlobalObjects = _fileHandle->readUint16LE();
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_fileHandle->seek(_numGlobalObjects, SEEK_CUR);
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_numRooms = _fileHandle->readByte();
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_fileHandle->seek(_numRooms * 3, SEEK_CUR);
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_numCostumes = _fileHandle->readByte();
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_fileHandle->seek(_numCostumes * 3, SEEK_CUR);
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_numScripts = _fileHandle->readByte();
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_fileHandle->seek(_numScripts * 3, SEEK_CUR);
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_numSounds = _fileHandle->readByte();
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_fileHandle->clearErr();
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_fileHandle->seek(0, SEEK_SET);
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readMAXS(0);
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allocateArrays();
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_fileHandle->readUint16LE(); /* version magic number */
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readGlobalObjects();
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readResTypeList(rtRoom);
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readResTypeList(rtCostume);
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readResTypeList(rtScript);
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readResTypeList(rtSound);
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}
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void ScummEngine_v2::readGlobalObjects() {
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int i;
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int num = _fileHandle->readUint16LE();
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assert(num == _numGlobalObjects);
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for (i = 0; i != num; i++) {
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byte tmp = _fileHandle->readByte();
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_objectOwnerTable[i] = tmp & OF_OWNER_MASK;
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_objectStateTable[i] = tmp >> OF_STATE_SHL;
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}
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}
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void ScummEngine_v2::readIndexFile() {
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int magic = 0;
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debug(9, "readIndexFile()");
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closeRoom();
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openRoom(0);
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magic = _fileHandle->readUint16LE();
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switch (magic) {
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case 0x0100:
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debug("Enhanced V2 game detected");
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assert(_game.version == 2);
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readEnhancedIndexFile();
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break;
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case 0x0A31:
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debug("Classic V1 game detected");
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assert(_game.version == 1);
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readClassicIndexFile();
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break;
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case 0x4643:
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if (!(_game.platform == Common::kPlatformNES))
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error("Use maniac target");
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debug("NES V1 game detected");
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assert(_game.version == 1);
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readClassicIndexFile();
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break;
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case 0x132:
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debug("C64 V1 game detected");
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if (_game.id == GID_MANIAC) {
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assert(_game.version == 0);
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} else {
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assert(_game.version == 1);
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}
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readClassicIndexFile();
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break;
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case 0x032:
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debug("Apple II V1 game detected");
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assert(_game.version == 0);
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readClassicIndexFile();
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break;
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default:
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error("Unknown magic id (0x%X) - this version is unsupported", magic);
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break;
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}
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closeRoom();
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}
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void ScummEngine_v2::loadCharset(int num) {
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// Stub, V2 font resources are hardcoded into the engine.
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}
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} // End of namespace Scumm
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