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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "scumm/scumm_v4.h"
#include "scumm/file.h"
#include "scumm/resource.h"
#include "scumm/util.h"
namespace Scumm {
extern const char *nameOfResType(ResType type);
int ScummEngine_v4::readResTypeList(ResType type) {
uint num;
debug(9, "readResTypeList(%s)", nameOfResType(type));
num = _fileHandle->readUint16LE();
if (num != _res->_types[type].size()) {
error("Invalid number of %ss (%d) in directory", nameOfResType(type), num);
}
for (ResId idx = 0; idx < num; idx++) {
_res->_types[type][idx]._roomno = _fileHandle->readByte();
_res->_types[type][idx]._roomoffs = _fileHandle->readUint32LE();
}
return num;
}
void ScummEngine_v4::readIndexFile() {
uint16 blocktype;
uint32 itemsize;
int numblock = 0;
debug(9, "readIndexFile()");
closeRoom();
openRoom(0);
while (true) {
// Figure out the sizes of various resources
itemsize = _fileHandle->readUint32LE();
blocktype = _fileHandle->readUint16LE();
if (_fileHandle->eos() || _fileHandle->err())
break;
switch (blocktype) {
case 0x4E52: // 'NR'
_fileHandle->readUint16LE();
break;
case 0x5230: // 'R0'
_numRooms = _fileHandle->readUint16LE();
break;
case 0x5330: // 'S0'
_numScripts = _fileHandle->readUint16LE();
break;
case 0x4E30: // 'N0'
_numSounds = _fileHandle->readUint16LE();
break;
case 0x4330: // 'C0'
_numCostumes = _fileHandle->readUint16LE();
break;
case 0x4F30: // 'O0'
_numGlobalObjects = _fileHandle->readUint16LE();
// Indy3 FM-TOWNS has 32 extra bytes of unknown meaning
if (_game.id == GID_INDY3 && _game.platform == Common::kPlatformFMTowns)
itemsize += 32;
break;
default:
break;
}
_fileHandle->seek(itemsize - 8, SEEK_CUR);
}
_fileHandle->seek(0, SEEK_SET);
readMAXS(0);
allocateArrays();
while (true) {
itemsize = _fileHandle->readUint32LE();
if (_fileHandle->eos() || _fileHandle->err())
break;
blocktype = _fileHandle->readUint16LE();
numblock++;
switch (blocktype) {
case 0x4E52: // 'NR'
// Names of rooms. Maybe we should put them into a table, for use by the debugger?
for (int room; (room = _fileHandle->readByte()); ) {
char buf[10];
_fileHandle->read(buf, 9);
buf[9] = 0;
for (int i = 0; i < 9; i++)
buf[i] ^= 0xFF;
debug(5, "Room %d: '%s'", room, buf);
}
break;
case 0x5230: // 'R0'
readResTypeList(rtRoom);
break;
case 0x5330: // 'S0'
readResTypeList(rtScript);
break;
case 0x4E30: // 'N0'
readResTypeList(rtSound);
break;
case 0x4330: // 'C0'
readResTypeList(rtCostume);
break;
case 0x4F30: // 'O0'
readGlobalObjects();
break;
default:
error("Bad ID %c%c found in directory", blocktype & 0xFF, blocktype >> 8);
}
}
closeRoom();
}
void ScummEngine_v4::loadCharset(int no) {
uint32 size;
memset(_charsetData, 0, sizeof(_charsetData));
assertRange(0, no, 4, "charset");
closeRoom();
Common::File file;
char buf[20];
sprintf(buf, "%03d.LFL", 900 + no);
file.open(buf);
if (file.isOpen() == false) {
error("loadCharset(%d): Missing file charset: %s", no, buf);
}
size = file.readUint32LE() + 11;
file.read(_res->createResource(rtCharset, no, size), size);
}
void ScummEngine_v4::readMAXS(int blockSize) {
// 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
}
void ScummEngine_v4::readGlobalObjects() {
int i;
int num = _fileHandle->readUint16LE();
assert(num == _numGlobalObjects);
uint32 bits;
byte tmp;
if (_game.id == GID_LOOM && _game.platform == Common::kPlatformPCEngine) {
for (i = 0; i != num; i++) {
bits = _fileHandle->readByte();
bits |= _fileHandle->readByte() << 8;
bits |= _fileHandle->readByte() << 16;
_classData[i] = bits;
}
for (i = 0; i != num; i++) {
tmp = _fileHandle->readByte();
_objectOwnerTable[i] = tmp & OF_OWNER_MASK;
_objectStateTable[i] = tmp >> OF_STATE_SHL;
}
} else {
for (i = 0; i != num; i++) {
bits = _fileHandle->readByte();
bits |= _fileHandle->readByte() << 8;
bits |= _fileHandle->readByte() << 16;
_classData[i] = bits;
tmp = _fileHandle->readByte();
_objectOwnerTable[i] = tmp & OF_OWNER_MASK;
_objectStateTable[i] = tmp >> OF_STATE_SHL;
}
}
// FIXME: Indy3 FM-TOWNS has 32 extra bytes of unknown meaning
if (_game.id == GID_INDY3 && _game.platform == Common::kPlatformFMTowns)
_fileHandle->seek(32, SEEK_CUR);
}
} // End of namespace Scumm
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