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MYST3: Build the zip-bit index at runtime

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This commit is contained in:
Bastien Bouclet 2014-09-11 06:42:00 +02:00
parent 642b095379
commit 540d4d8ba7
2 changed files with 24 additions and 49 deletions
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71
engines/myst3/database.cpp
View File

@ -86,6 +86,7 @@ Database::Database(Myst3Engine *vm) :
loadAmbientCues(file);
preloadCommonRooms(file);
initializeZipBitIndexTable(file);
delete file;
}
@ -148,59 +149,31 @@ NodePtr Database::getNodeData(uint16 nodeID, uint32 roomID, uint32 ageID) {
return NodePtr();
}
int32 Database::getNodeZipBitIndex(uint16 nodeID, uint32 roomID) {
static const struct {
uint16 id;
int16 zipBitIndex;
} roomsZipBitIndex[] = {
{ 101, 0 },
{ 201, 17 },
{ 301, 18 },
{ 401, 47 },
{ 501, 55 },
{ 502, 195 },
{ 503, 228 },
{ 504, 241 },
{ 505, 254 },
{ 506, 279 },
{ 601, 315 },
{ 602, 354 },
{ 603, 398 },
{ 604, 477 },
{ 605, 520 },
{ 703, 527 },
{ 701, 547 },
{ 704, 591 },
{ 707, 617 },
{ 706, 665 },
{ 705, 693 },
{ 708, 734 },
{ 801, 764 },
{ 903, 826 },
{ 901, 831 },
{ 902, 855 },
{ 904, 861 },
{ 1001, 865 },
{ 1002, 897 },
{ 1003, 944 },
{ 1004, 971 },
{ 1005, 1038 },
{ 1006, 1044 }
};
void Database::initializeZipBitIndexTable(Common::SeekableSubReadStreamEndian *file) {
int16 zipBit = 0;
for (uint i = 0; i < _ages.size(); i++) {
for (uint j = 0; j < _ages[i].rooms.size(); j++) {
_roomZipBitIndex.setVal(_ages[i].rooms[j].id, zipBit);
// Add the highest zip-bit index for the current room
// to get the zip-bit index for the next room
int16 maxZipBitForRoom = 0;
Common::Array<NodePtr> nodes = loadRoomScripts(file, &_ages[i].rooms[j]);
for (uint k = 0; k < nodes.size(); k++) {
maxZipBitForRoom = MAX(maxZipBitForRoom, nodes[k]->zipBitIndex);
}
zipBit += maxZipBitForRoom + 1;
}
}
}
int32 Database::getNodeZipBitIndex(uint16 nodeID, uint32 roomID) {
if (roomID == 0) {
roomID = _currentRoomID;
}
int16 roomZipBitIndex = -1;
for (uint i = 0; i < ARRAYSIZE(roomsZipBitIndex); i++) {
if (roomsZipBitIndex[i].id == roomID) {
roomZipBitIndex = roomsZipBitIndex[i].zipBitIndex;
break;
}
}
if (roomZipBitIndex == -1) {
if (!_roomZipBitIndex.contains(roomID)) {
error("Unable to find zip-bit index for room %d", roomID);
}
@ -208,7 +181,7 @@ int32 Database::getNodeZipBitIndex(uint16 nodeID, uint32 roomID) {
for (uint i = 0; i < nodes.size(); i++) {
if (nodes[i]->id == nodeID) {
return roomZipBitIndex + nodes[i]->zipBitIndex;
return _roomZipBitIndex[roomID] + nodes[i]->zipBitIndex;
}
}

2
engines/myst3/database.h
View File

@ -151,6 +151,7 @@ private:
Common::HashMap<uint32, Common::String> _soundNames;
Common::HashMap<uint16, AmbientCue> _ambientCues;
Common::HashMap<uint32, int16> _roomZipBitIndex;
RoomData *findRoomData(uint32 roomID);
Common::Array<NodePtr> getRoomNodes(uint32 roomID);
@ -159,6 +160,7 @@ private:
void loadRoomNodeScripts(Common::SeekableSubReadStreamEndian *file, Common::Array<NodePtr> &nodes);
void loadRoomSoundScripts(Common::SeekableSubReadStreamEndian *file, Common::Array<NodePtr> &nodes, bool background);
void preloadCommonRooms(Common::SeekableSubReadStreamEndian *file);
void initializeZipBitIndexTable(Common::SeekableSubReadStreamEndian *file);
Common::Array<AgeData> loadAges(Common::ReadStreamEndian &s);
RoomData loadRoomDescription(Common::ReadStreamEndian &s);