Common::Array<NodePtr> Database::loadRoomScripts(RoomData *room) {
Common::Array<NodePtr> nodes;
Common::SeekableSubReadStreamEndian *file = openDatabaseFile();
// Load the node scripts
if (room->scriptsOffset) {
file->seek(room->scriptsOffset);
loadRoomNodeScripts(file, nodes);
}
// Load the ambient sound scripts, if any
if (room->ambSoundsOffset) {
file->seek(room->ambSoundsOffset);
loadRoomSoundScripts(file, nodes, false);
}
if (room->unkOffset) {
file->seek(room->unkOffset);
loadRoomSoundScripts(file, nodes, true);
}
delete file;
return nodes;
}
Database::Database(Myst3Engine *vm) :
_vm(vm),
_currentRoomID(0),
_executableVersion(0),
_currentRoomData(0) {
_executableVersion = _vm->getExecutableVersion();
if (_executableVersion != 0) {
debug("Initializing database from %s (Platform: %s) (%s)", _executableVersion->executable, getPlatformDescription(_vm->getPlatform()), _executableVersion->description);
} else {
error("Could not find any executable to load");
}
// Load the ages and rooms description
Common::SeekableSubReadStreamEndian *file = openDatabaseFile();
file->seek(_executableVersion->ageTableOffset);
_ages = loadAges(*file);
for (uint i = 0; i < _ages.size(); i++) {
file->seek(_ages[i].roomsOffset);
// Read the room offset table
Common::Array<uint32> roomsOffsets;
for (uint j = 0; j < _ages[i].roomCount; j++) {
uint32 offset = file->readUint32() - _executableVersion->baseOffset;
roomsOffsets.push_back(offset);
}
// Load the rooms
for (uint j = 0; j < roomsOffsets.size(); j++) {
file->seek(roomsOffsets[j]);
_ages[i].rooms.push_back(loadRoomDescription(*file));
}
}
file->seek(_executableVersion->nodeInitScriptOffset);
_nodeInitScript = loadOpcodes(*file);
file->seek(_executableVersion->soundNamesOffset);
loadSoundNames(file);
delete file;
preloadCommonRooms();
}
void TalkTable_GFF::readString05(Common::SeekableSubReadStreamEndian &huffTree,
Common::SeekableSubReadStreamEndian &bitStream, Entry &entry) const {
/* Read a string encoded in a Huffman'd bitstream.
*
* The Huffman tree itself is made up of signed 32bit nodes:
* - Positive values are internal nodes, encoding a child index
* - Negative values are leaf nodes, encoding an UTF-16 character value
*
* Kudos to Rick (gibbed) (<http://gib.me/>).
*/
std::vector<uint16> utf16Str;
const uint32 startOffset = entry.strct->getUint(kGFF4HuffTalkStringBitOffset);
uint32 index = startOffset >> 5;
uint32 shift = startOffset & 0x1F;
do {
ptrdiff_t e = (huffTree.size() / 8) - 1;
while (e >= 0) {
bitStream.seek(index * 4);
const ptrdiff_t offset = (bitStream.readUint32() >> shift) & 1;
huffTree.seek(((e * 2) + offset) * 4);
e = huffTree.readSint32();
shift++;
index += (shift >> 5);
shift %= 32;
}
utf16Str.push_back(TO_LE_16(0xFFFF - e));
} while (utf16Str.back() != 0);
const byte *data = reinterpret_cast<const byte *>(&utf16Str[0]);
const size_t size = utf16Str.size() * 2;
entry.text = Common::readString(data, size, Common::kEncodingUTF16LE);
}
Database::Database(Myst3Engine *vm) :
_vm(vm),
_currentRoomID(0),
_executableVersion(0),
_currentRoomData(0) {
_executableVersion = _vm->getExecutableVersion();
if (_executableVersion != 0) {
debug("Initializing database from %s (Platform: %s) (%s)", _executableVersion->executable, getPlatformDescription(_vm->getPlatform()), _executableVersion->description);
} else {
error("Could not find any executable to load");
}
// Load the ages and rooms description
Common::SeekableSubReadStreamEndian *file = openDatabaseFile();
file->seek(_executableVersion->ageTableOffset);
_ages = loadAges(*file);
for (uint i = 0; i < _ages.size(); i++) {
file->seek(_ages[i].roomsOffset);
// Read the room offset table
Common::Array<uint32> roomsOffsets;
for (uint j = 0; j < _ages[i].roomCount; j++) {
uint32 offset = file->readUint32() - _executableVersion->baseOffset;
roomsOffsets.push_back(offset);
}
// Load the rooms
for (uint j = 0; j < roomsOffsets.size(); j++) {
file->seek(roomsOffsets[j]);
_ages[i].rooms.push_back(loadRoomDescription(*file));
}
}
file->seek(_executableVersion->nodeInitScriptOffset);
_nodeInitScript = loadOpcodes(*file);
file->seek(_executableVersion->soundNamesOffset);
loadSoundNames(file);
// TODO: Remove once the offset table is complete
if (!_executableVersion->ambientCuesOffset) {
error("The description for this executable (%s, %s) does not contain the ambient cues offset. Please contact the ResidualVM team.",
_executableVersion->executable, _executableVersion->description);
}
file->seek(_executableVersion->ambientCuesOffset);
loadAmbientCues(file);
preloadCommonRooms(file);
initializeZipBitIndexTable(file);
delete file;
}
CondScript Database::loadCondScript(Common::SeekableSubReadStreamEndian &s) {
CondScript script;
script.condition = s.readUint16();
if(!script.condition)
return script;
// WORKAROUND: Original data bug in MATO 32765
// The script data for node MATO 32765 is missing its first two bytes
// of data, resulting in incorrect opcodes being read
// Original disassembly:
// init 0 > c[v565 != 0]
// op 115, ifVarInRange ( )
// op 45, inventoryAddBack ( )
// op 53, varSetValue ( vSunspotColor 4090 )
// op 53, varSetValue ( vSunspotRadius 40 )
// op 33, waterEffectSetWave ( 100 80 )
// op 32, waterEffectSetAttenuation ( 359 )
// op 31, waterEffectSetSpeed ( 15 )
// Fixed disassembly
// init 0 > c[v1 != 0]
// op 53, varSetValue ( vSunspotIntensity 45 )
// op 53, varSetValue ( vSunspotColor 4090 )
// op 53, varSetValue ( vSunspotRadius 40 )
// op 33, waterEffectSetWave ( 100 80 )
// op 32, waterEffectSetAttenuation ( 359 )
// op 31, waterEffectSetSpeed ( 15 )
if (script.condition == 565) {
script.condition = 1;
s.seek(-2, SEEK_CUR);
}
// END WORKAROUND
script.script = loadOpcodes(s);
return script;
}