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resource_v2.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2002-2004 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: /cvsroot/scummvm/scummvm/scumm/resource_v2.cpp,v 1.42 2004/10/22 10:25:55 eriktorbjorn Exp $
 *
 */

#include "stdafx.h"
#include "scumm/scumm.h"
#include "scumm/intern.h"
#include "scumm/player_v2.h"
#include "scumm/player_v1.h"
#include "scumm/resource.h"
#include "sound/mididrv.h"

namespace Scumm {

void ScummEngine_v2::readClassicIndexFile() {
      int i;

      if (_gameId == GID_MANIAC) {
            if (!(_features & GF_AMIGA) && !(_features & GF_NES))
                  _musicEngine = new Player_V1(this, _midiDriver != MD_PCSPK);

            _numGlobalObjects = 800;
            _numRooms = 55;
            _numCostumes = 35;
            _numScripts = 200;
            _numSounds = 100;
      } else if (_gameId == GID_ZAK) {
            if (!(_features & GF_AMIGA))
                  _musicEngine = new Player_V2(this, _midiDriver != MD_PCSPK);

            _numGlobalObjects = 775;
            _numRooms = 61;
            _numCostumes = 37;
            _numScripts = 155;
            _numSounds = 120;
      }

      _fileHandle.seek(0, SEEK_SET);

      readMAXS();

      // Jamieson630: palManipulate variable initialization
      _palManipCounter = 0;
      _palManipPalette = 0; // Will allocate when needed
      _palManipIntermediatePal = 0; // Will allocate when needed

      _fileHandle.readUint16LE(); /* version magic number */
      for (i = 0; i != _numGlobalObjects; i++) {
            byte tmp = _fileHandle.readByte();
            _objectOwnerTable[i] = tmp & OF_OWNER_MASK;
            _objectStateTable[i] = tmp >> OF_STATE_SHL;
      }

      for (i = 0; i < _numRooms; i++) {
            res.roomno[rtRoom][i] = i;
      }
      _fileHandle.seek(_numRooms, SEEK_CUR);
      for (i = 0; i < _numRooms; i++) {
            res.roomoffs[rtRoom][i] = _fileHandle.readUint16LE();
            if (res.roomoffs[rtRoom][i] == 0xFFFF)
                  res.roomoffs[rtRoom][i] = 0xFFFFFFFF;
      }

      for (i = 0; i < _numCostumes; i++) {
            res.roomno[rtCostume][i] = _fileHandle.readByte();
      }
      for (i = 0; i < _numCostumes; i++) {
            res.roomoffs[rtCostume][i] = _fileHandle.readUint16LE();
            if (res.roomoffs[rtCostume][i] == 0xFFFF)
                  res.roomoffs[rtCostume][i] = 0xFFFFFFFF;
      }

      for (i = 0; i < _numScripts; i++) {
            res.roomno[rtScript][i] = _fileHandle.readByte();
      }
      for (i = 0; i < _numScripts; i++) {
            res.roomoffs[rtScript][i] = _fileHandle.readUint16LE();
            if (res.roomoffs[rtScript][i] == 0xFFFF)
                  res.roomoffs[rtScript][i] = 0xFFFFFFFF;
      }

      for (i = 0; i < _numSounds; i++) {
            res.roomno[rtSound][i] = _fileHandle.readByte();
      }
      for (i = 0; i < _numSounds; i++) {
            res.roomoffs[rtSound][i] = _fileHandle.readUint16LE();
            if (res.roomoffs[rtSound][i] == 0xFFFF)
                  res.roomoffs[rtSound][i] = 0xFFFFFFFF;
      }
}

void ScummEngine_v2::readEnhancedIndexFile() {

      if (!(_features & GF_AMIGA))
            _musicEngine = new Player_V2(this, _midiDriver != MD_PCSPK);

      _numGlobalObjects = _fileHandle.readUint16LE();
      _fileHandle.seek(_numGlobalObjects, SEEK_CUR); // Skip object flags
      _numRooms = _fileHandle.readByte();
      _fileHandle.seek(_numRooms * 3, SEEK_CUR);
      _numCostumes = _fileHandle.readByte();
      _fileHandle.seek(_numCostumes * 3, SEEK_CUR);
      _numScripts = _fileHandle.readByte();
      _fileHandle.seek(_numScripts * 3, SEEK_CUR);
      _numSounds = _fileHandle.readByte();

      _fileHandle.clearIOFailed();
      _fileHandle.seek(0, SEEK_SET);

      readMAXS();

      // Jamieson630: palManipulate variable initialization
      _palManipCounter = 0;
      _palManipPalette = 0; // Will allocate when needed
      _palManipIntermediatePal = 0; // Will allocate when needed

      _fileHandle.readUint16LE(); /* version magic number */
      int num = _fileHandle.readUint16LE();
      assert(num == _numGlobalObjects);
      for (int i = 0; i != num; i++) {
            byte tmp = _fileHandle.readByte();
            _objectOwnerTable[i] = tmp & OF_OWNER_MASK;
            _objectStateTable[i] = tmp >> OF_STATE_SHL;
      }
      readResTypeList(rtRoom, MKID('ROOM'), "room");
      readResTypeList(rtCostume, MKID('COST'), "costume");
      readResTypeList(rtScript, MKID('SCRP'), "script");
      readResTypeList(rtSound, MKID('SOUN'), "sound");
}

void ScummEngine_v2::readIndexFile() {
      int magic = 0;
      debug(9, "readIndexFile()");

      closeRoom();
      openRoom(0);

      magic = _fileHandle.readUint16LE();

      switch (magic) {
            case 0x0100:
                  printf("Enhanced V2 game detected\n");
                  readEnhancedIndexFile();                  
                  break;
            case 0x0A31:
                  printf("Classic V1 game detected\n");
                  _version = 1;
                  readClassicIndexFile();
                  break;
            case 0x4643:
                  error("No support for NES version");
                  if (!(_features & GF_NES))
                        error("Use maniacnes target");
                  printf("NES V1 game detected\n");
                  _version = 1;
                  readClassicIndexFile();
                  break;
            default:
                  error("Unknown magic id (0x%X) - this version is unsupported", magic);
                  break;
      }

      closeRoom();
}

void ScummEngine_v2::readMAXS() {
      // FIXME - I'm not sure for those values yet, they will have to be rechecked

      _numVariables = 800;                      // 800
      _numBitVariables = 4096;                  // 2048
      _numLocalObjects = 200;                   // 200
      _numArray = 50;
      _numVerbs = 100;
      _numNewNames = 50;
      _objectRoomTable = NULL;
      _numCharsets = 9;                         // 9
      _numInventory = 80;                             // 80
      _numGlobalScripts = 200;
      _numFlObject = 50;

      _shadowPaletteSize = 256;

      _shadowPalette = (byte *) calloc(_shadowPaletteSize, 1);    // FIXME - needs to be removed later
      allocateArrays();
}

void ScummEngine_v2::loadCharset(int num) {
      // Stub, V2 font resources are hardcoded into the engine.
}

} // End of namespace Scumm

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