public int ReadFrom(byte[] Buffer, int StartIndex = 0)
{
int cursor = StartIndex;
uint signature = BitConverter.ToUInt32(Buffer, cursor);
cursor += TypeSizes.INT;
if (signature == SIGNATURE)
{
RooVersion = BitConverter.ToUInt32(Buffer, cursor);
cursor += TypeSizes.INT;
// supported version ?
if (RooVersion >= RooFile.MINVERSION)
{
Challenge = BitConverter.ToUInt32(Buffer, cursor);
cursor += TypeSizes.INT;
OffsetClient = BitConverter.ToUInt32(Buffer, cursor);
cursor += TypeSizes.INT;
OffsetServer = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
}
else
throw new Exception("RooVersion too old, got: " + RooVersion + " Expected greater " + RooFile.MINVERSION);
}
else
throw new Exception("Wrong file signature: " + signature + " (expected " + SIGNATURE + ").");
//
// Client part (was encrypted once)
//
// Check if file is encrypted
if (BitConverter.ToUInt32(Buffer, cursor) == ENCRYPTIONFLAG)
{
#if WINCLR && X86
EncryptionEnabled = true;
cursor += TypeSizes.INT;
// get additional values for decryption
EncryptedStreamLength = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
ExpectedResponse = BitConverter.ToUInt32(Buffer, cursor);
cursor += TypeSizes.INT;
Crush32.Decrypt(Buffer, cursor, EncryptedStreamLength, Challenge, ExpectedResponse, GetPassword());
#else
throw new Exception(ERRORCRUSHPLATFORM);
#endif
}
else
EncryptionEnabled = false;
// Get the basic infos, like room dimension and section offsets
RoomSizeX = BitConverter.ToUInt32(Buffer, cursor);
cursor += TypeSizes.INT;
RoomSizeY = BitConverter.ToUInt32(Buffer, cursor);
cursor += TypeSizes.INT;
OffsetBSPTree = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
OffsetWalls = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
OffsetWallsEditor = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
OffsetSideDefs = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
OffsetSectors = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
OffsetThings = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
// used to save section item counts
ushort len;
// Section 1: BSP-Tree
cursor = OffsetBSPTree + (Convert.ToByte(EncryptionEnabled) * 12);
len = BitConverter.ToUInt16(Buffer, cursor);
cursor += TypeSizes.SHORT;
BSPTree = new List<RooBSPItem>(len);
for (int i = 0; i < len; i++)
{
RooBSPItem bspItem = RooBSPItem.ExtractBSPItem(RooVersion, Buffer, cursor);
cursor += bspItem.ByteLength;
BSPTree.Add(bspItem);
}
// Section 2: Walls
cursor = OffsetWalls + (Convert.ToByte(EncryptionEnabled) * 12);
len = BitConverter.ToUInt16(Buffer, cursor);
cursor += TypeSizes.SHORT;
Walls = new List<RooWall>(len);
for (int i = 0; i < len; i++)
{
RooWall lineDef = new RooWall(RooVersion, Buffer, cursor);
cursor += lineDef.ByteLength;
lineDef.Num = i + 1;
Walls.Add(lineDef);
}
// Section 3: WallsEditor
cursor = OffsetWallsEditor + (Convert.ToByte(EncryptionEnabled) * 12);
len = BitConverter.ToUInt16(Buffer, cursor);
cursor += TypeSizes.SHORT;
WallsEditor = new List<RooWallEditor>(len);
for (int i = 0; i < len; i++)
{
RooWallEditor wallEditor = new RooWallEditor(Buffer, cursor);
cursor += wallEditor.ByteLength;
wallEditor.Num = i + 1;
WallsEditor.Add(wallEditor);
}
// Section 4: SideDefs
cursor = OffsetSideDefs + (Convert.ToByte(EncryptionEnabled) * 12);
len = BitConverter.ToUInt16(Buffer, cursor);
cursor += TypeSizes.SHORT;
SideDefs = new List<RooSideDef>(len);
for (int i = 0; i < len; i++)
{
RooSideDef sideDef = new RooSideDef(Buffer, cursor);
cursor += sideDef.ByteLength;
sideDef.Num = i + 1;
sideDef.TextureChanged += OnSideTextureChanged;
SideDefs.Add(sideDef);
}
// Section 5: Sectors
cursor = OffsetSectors + (Convert.ToByte(EncryptionEnabled) * 12);
len = BitConverter.ToUInt16(Buffer, cursor);
cursor += TypeSizes.SHORT;
bool hasSpeed = (RooVersion >= VERSIONSPEED);
Sectors = new List<RooSector>(len);
for (int i = 0; i < len; i++)
{
RooSector sectorDef = new RooSector(RooVersion, Buffer, cursor, hasSpeed);
cursor += sectorDef.ByteLength;
sectorDef.Num = i + 1;
sectorDef.TextureChanged += OnSectorTextureChanged;
sectorDef.Moved += OnSectorMoved;
Sectors.Add(sectorDef);
}
// Section 6: Things
cursor = OffsetThings + (Convert.ToByte(EncryptionEnabled) * 12);
len = BitConverter.ToUInt16(Buffer, cursor);
cursor += TypeSizes.SHORT;
Things = new List<RooThing>(len);
if (len > 2)
{
for (int i = 0; i < len; i++)
{
RooThingExtended rooThing = new RooThingExtended(Buffer, cursor);
cursor += rooThing.ByteLength;
Things.Add(rooThing);
}
}
else
{
for (int i = 0; i < len; i++)
{
RooThing rooThing = new RooThing(Buffer, cursor);
cursor += rooThing.ByteLength;
Things.Add(rooThing);
}
}
// some older maps don't have the roomid
// so if we've already reached the serveroffset, set it to 0
if (cursor == OffsetServer)
{
RoomID = 0;
}
else
{
// get roomid
RoomID = BitConverter.ToInt32(Buffer, cursor);
cursor += TypeSizes.INT;
}
//
// Server part
//
// load grids
Grids = new RooGrids(RooVersion, Buffer, cursor);
cursor += Grids.ByteLength;
return cursor - StartIndex;
}
public unsafe void ReadFrom(ref byte* Buffer)
{
// save the startptr, we need it later
byte* readStartPtr = Buffer;
uint signature = *((uint*)Buffer);
Buffer += TypeSizes.INT;
if (signature == SIGNATURE)
{
RooVersion = *((uint*)Buffer);
Buffer += TypeSizes.INT;
// supported version ?
if (RooVersion >= RooFile.MINVERSION)
{
Challenge = *((uint*)Buffer);
Buffer += TypeSizes.INT;
OffsetClient = *((uint*)Buffer);
Buffer += TypeSizes.INT;
OffsetServer = *((int*)Buffer);
Buffer += TypeSizes.INT;
}
else
throw new Exception("RooVersion too old, got: " + RooVersion + " Expected greater " + RooFile.MINVERSION);
}
else
throw new Exception("Wrong file signature: " + signature + " (expected " + SIGNATURE + ").");
//
// Client part (was encrypted once)
//
// Check if file is encrypted
if (*((uint*)Buffer) == ENCRYPTIONFLAG)
{
#if WINCLR && X86
EncryptionEnabled = true;
Buffer += TypeSizes.INT;
// get additional values for decryption
EncryptedStreamLength = *((int*)Buffer);
Buffer += TypeSizes.INT;
ExpectedResponse = *((uint*)Buffer);
Buffer += TypeSizes.INT;
Crush32.Decrypt(Buffer, EncryptedStreamLength, Challenge, ExpectedResponse, GetPassword());
#else
throw new Exception(ERRORCRUSHPLATFORM);
#endif
}
else
EncryptionEnabled = false;
// Get the basic infos, like room dimension and section offsets
RoomSizeX = *((uint*)Buffer);
Buffer += TypeSizes.INT;
RoomSizeY = *((uint*)Buffer);
Buffer += TypeSizes.INT;
OffsetBSPTree = *((int*)Buffer);
Buffer += TypeSizes.INT;
OffsetWalls = *((int*)Buffer);
Buffer += TypeSizes.INT;
OffsetWallsEditor = *((int*)Buffer);
Buffer += TypeSizes.INT;
OffsetSideDefs = *((int*)Buffer);
Buffer += TypeSizes.INT;
OffsetSectors = *((int*)Buffer);
Buffer += TypeSizes.INT;
OffsetThings = *((int*)Buffer);
Buffer += TypeSizes.INT;
// used to save section item counts
ushort len;
// Section 1: BSP-Tree
len = *((ushort*)Buffer);
Buffer += TypeSizes.SHORT;
BSPTree = new List<RooBSPItem>(len);
for (int i = 0; i < len; i++)
{
RooBSPItem bspItem = RooBSPItem.ExtractBSPItem(RooVersion, ref Buffer);
BSPTree.Add(bspItem);
}
// Section 2: Walls
len = *((ushort*)Buffer);
Buffer += TypeSizes.SHORT;
Walls = new List<RooWall>(len);
for (int i = 0; i < len; i++)
{
RooWall lineDef = new RooWall(RooVersion, ref Buffer);
lineDef.Num = i + 1;
Walls.Add(lineDef);
}
// Section 3: WallsEditor
len = *((ushort*)Buffer);
Buffer += TypeSizes.SHORT;
WallsEditor = new List<RooWallEditor>(len);
for (int i = 0; i < len; i++)
{
RooWallEditor wallEditor = new RooWallEditor(ref Buffer);
wallEditor.Num = i + 1;
WallsEditor.Add(wallEditor);
}
// Section 4: SideDefs
len = *((ushort*)Buffer);
Buffer += TypeSizes.SHORT;
SideDefs = new List<RooSideDef>(len);
for (int i = 0; i < len; i++)
{
RooSideDef sideDef = new RooSideDef(ref Buffer);
sideDef.Num = i + 1;
sideDef.TextureChanged += OnSideTextureChanged;
SideDefs.Add(sideDef);
}
// Section 5: Sectors
len = *((ushort*)Buffer);
Buffer += TypeSizes.SHORT;
bool hasSpeed = (RooVersion >= VERSIONSPEED);
Sectors = new List<RooSector>(len);
for (int i = 0; i < len; i++)
{
RooSector sectorDef = new RooSector(RooVersion, ref Buffer, hasSpeed);
sectorDef.TextureChanged += OnSectorTextureChanged;
sectorDef.Moved += OnSectorMoved;
sectorDef.Num = i + 1;
Sectors.Add(sectorDef);
}
// Section 6: Things
// There is old and new variant of "thing"
len = *((ushort*)Buffer);
Buffer += TypeSizes.SHORT;
Things = new List<RooThing>(len);
if (len > 2)
{
for (int i = 0; i < len; i++)
Things.Add(new RooThingExtended(ref Buffer));
}
else
{
for (int i = 0; i < len; i++)
Things.Add(new RooThing(ref Buffer));
}
// some older maps don't have the roomid
// so if we've already reached the serveroffset, set it to 0
if (Buffer - readStartPtr == OffsetServer)
{
RoomID = 0;
}
else
{
// roomid
RoomID = *((int*)Buffer);
Buffer += TypeSizes.INT;
}
//
// Server part
//
Grids = new RooGrids(RooVersion, ref Buffer);
}