public RelocationPointerList GetListForPart(byte module, byte block)
{
for (int i = 0; i < pointerBlocks.Length; i++)
{
RelocationPointerList e = pointerBlocks[i];
if (e.module == module && e.id == block)
{
return(e);
}
}
return(null);
}
private void ReadPointerBlock(Reader reader, RelocationPointerList pointerBlock)
{
for (int j = 0; j < pointerBlock.count; j++)
{
// One pointer info struct contains the address where the pointer is located and the module & block of the part it points to.
// The address that it points to is to be read at address offsetInMemory.
// The part's baseInMemory should be subtracted from it to get the offset relative to the part.
pointerBlock.pointers[j] = new RelocationPointerInfo();
pointerBlock.pointers[j].offsetInMemory = reader.ReadUInt32();
pointerBlock.pointers[j].module = reader.ReadByte();
pointerBlock.pointers[j].id = reader.ReadByte();
if (Settings.s.engineVersion > Settings.EngineVersion.TT && Settings.s.game != Settings.Game.PlaymobilLaura)
{
pointerBlock.pointers[j].byte6 = reader.ReadByte();
pointerBlock.pointers[j].byte7 = reader.ReadByte();
}
}
}
// Used for Tonic Trouble's Fixlvl.rtb, which contains a list of fix->lvl pointers that should be loaded along with the fix.rtb file
public void Add(RelocationTable rt)
{
if (rt == null)
{
return;
}
for (int i = 0; i < rt.pointerBlocks.Length; i++)
{
RelocationPointerList ptrList = GetListForPart(rt.pointerBlocks[i].module, rt.pointerBlocks[i].id);
if (ptrList == null)
{
Array.Resize(ref pointerBlocks, pointerBlocks.Length + 1);
pointerBlocks[pointerBlocks.Length - 1] = rt.pointerBlocks[i];
}
else
{
ptrList.count += rt.pointerBlocks[i].count;
Array.Resize(ref ptrList.pointers, (int)ptrList.count);
Array.Copy(rt.pointerBlocks[i].pointers, 0, ptrList.pointers, ptrList.count - rt.pointerBlocks[i].count, rt.pointerBlocks[i].count);
}
}
}
void Read(EndianBinaryReader reader)
{
MapLoader l = MapLoader.Loader;
byte count = reader.ReadByte();
reader.ReadUInt32();
pointerBlocks = new RelocationPointerList[count];
for (int i = 0; i < count; i++)
{
// A pointer list contains pointers located in SNA part with matching module & block
pointerBlocks[i] = new RelocationPointerList();
pointerBlocks[i].module = reader.ReadByte();
pointerBlocks[i].id = reader.ReadByte();
l.print("Parsing pointer block for (" + pointerBlocks[i].module + "," + pointerBlocks[i].id + ")");
//l.print("Module: " + parts[i].module + " - Block: " + parts[i].block);
pointerBlocks[i].count = reader.ReadUInt32();
pointerBlocks[i].pointers = new RelocationPointerInfo[pointerBlocks[i].count];
for (int j = 0; j < pointerBlocks[i].count; j++)
{
// One pointer info struct contains the address where the pointer is located and the module & block of the part it points to.
// The address that it points to is to be read at address offsetInMemory.
// The part's baseInMemory should be subtracted from it to get the offset relative to the part.
pointerBlocks[i].pointers[j] = new RelocationPointerInfo();
pointerBlocks[i].pointers[j].offsetInMemory = reader.ReadUInt32();
if (pointerBlocks[i].pointers[j].offsetInMemory == 1824756 || pointerBlocks[i].pointers[j].offsetInMemory == 1824748)
{
l.print("Found! It's (" + pointerBlocks[i].module + "," + pointerBlocks[i].id + ")");
}
pointerBlocks[i].pointers[j].module = reader.ReadByte();
pointerBlocks[i].pointers[j].id = reader.ReadByte();
pointerBlocks[i].pointers[j].byte6 = reader.ReadByte();
pointerBlocks[i].pointers[j].byte7 = reader.ReadByte();
}
}
}
async Task Read(Reader reader)
{
MapLoader l = MapLoader.Loader;
PartialHttpStream httpStream = reader.BaseStream as PartialHttpStream;
if (httpStream != null)
{
await httpStream.FillCacheForRead(5);
}
byte count = reader.ReadByte();
if (Settings.s.game != Settings.Game.R2Demo &&
Settings.s.engineVersion > Settings.EngineVersion.Montreal)
{
reader.ReadUInt32();
}
pointerBlocks = new RelocationPointerList[count];
for (int i = 0; i < count; i++)
{
if (reader.BaseStream.Position >= reader.BaseStream.Length)
{
Array.Resize(ref pointerBlocks, i);
break;
}
if (httpStream != null)
{
await httpStream.FillCacheForRead(6);
}
// A pointer list contains pointers located in SNA part with matching module & block
pointerBlocks[i] = new RelocationPointerList();
pointerBlocks[i].module = reader.ReadByte();
pointerBlocks[i].id = reader.ReadByte();
l.print("Parsing pointer block for (" + pointerBlocks[i].module + "," + pointerBlocks[i].id + ")");
//l.print("Module: " + parts[i].module + " - Block: " + parts[i].block);
pointerBlocks[i].count = reader.ReadUInt32();
pointerBlocks[i].pointers = new RelocationPointerInfo[pointerBlocks[i].count];
if (pointerBlocks[i].count > 0)
{
if (Settings.s.snaCompression)
{
if (httpStream != null)
{
await httpStream.FillCacheForRead(5 *4);
}
uint isCompressed = reader.ReadUInt32();
uint compressedSize = reader.ReadUInt32();
uint compressedChecksum = reader.ReadUInt32();
uint decompressedSize = reader.ReadUInt32();
uint decompressedChecksum = reader.ReadUInt32();
if (httpStream != null)
{
await httpStream.FillCacheForRead((int)compressedSize);
}
byte[] compressedData = reader.ReadBytes((int)compressedSize);
if (isCompressed != 0)
{
using (var compressedStream = new MemoryStream(compressedData))
using (var lzo = new LzoStream(compressedStream, CompressionMode.Decompress))
using (Reader lzoReader = new Reader(lzo, Settings.s.IsLittleEndian)) {
ReadPointerBlock(lzoReader, pointerBlocks[i]);
}
}
else
{
using (var uncompressedStream = new MemoryStream(compressedData))
using (Reader unCompressedReader = new Reader(uncompressedStream, Settings.s.IsLittleEndian)) {
ReadPointerBlock(unCompressedReader, pointerBlocks[i]);
}
}
}
else
{
if (httpStream != null)
{
await httpStream.FillCacheForRead((int)pointerBlocks[i].count * 8);
}
ReadPointerBlock(reader, pointerBlocks[i]);
}
}
}
}
ushort GetRelocationKey(RelocationPointerList list) // The list of pointers for a certain SNA block
{
return(GetRelocationKey(list.module, list.id));
}