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WDT files
WDT files specify exactly which map tiles are present in a world, if any, and can also reference a "global" WMO. They have a Chunked File Structure.
| Identifier | MVER |
|---|---|
| Length | 4 bytes |
This chunk specifies the format version. All WDT Files in 1.12.X have Version 18.
| Identifier | MPHD |
|---|---|
| Length | 32 bytes |
This chunk is the Map header. It contains 8 int32 Values.
00h uint32 flags;
04h uint32 something;
08h uint32 unused[6];
Flags values are not well understood. From Wowdev:
Flag Description
--------------------------------------------------------------------------------------------------------
0x01 Use global map object definition.
0x02 CMapRenderChunk::SetVertexFormat( 2 ); (else: 1) -- Use vertex shading (ADT.MCNK.MCCV)
0x04 Decides whether to use _env terrain shaders or not: funky and if MCAL has 4096 instead of 2048(?)
0x08 Disables something. No idea what. Another rendering thing. Someone may check all them in wild life..
0x10 if( flags & 0x02 && CMap::enableTerrainShaderVertex ) CMapRenderChunk::SetVertexFormat( 16 ); // cataclysm?
The second integer is not ignored but stores something too. This is even less well understood.
| Identifier | MAIN |
|---|---|
| Length | 32768 bytes |
This is the map table data. It contains 64x64 8 byte entries.
00h uint32 m_flags;
04h void* m_area; // only set during runtime.
Flags:
Flag Description
-----------------------------------------------------------------
0x01 There is an ADT File for this position
0x02 Set by the client during runtime if the chunk was loaded
We just need to know the 0x01 flag. The corresponding ADT File is found in World\Maps\<MAPNAME>\<MAPNAME>_XX_YY.adt
| Identifier | MWMO |
|---|---|
| Length | varies |
If there is no terrain in a map (e.g. Deeprun Tram), all entries in the MAIN Chunk are 0. In this, and ONLY in this case, the MWMO Chunk contains exactly one WMO File Name (Zero Terminated).
| Identifier | MODF |
|---|---|
| Length | 64 bytes |
If the MWMO Chunk is not empty, MODF contains placement information for the WMO.
00h uint32 ID (index in the MWID list)
04h uint32 unique identifier for this instance
08h float[3] Position (X,Y,Z)
14h float[3] Orientation (A,B,C)
20h float[6] Bounding Box
38h uint16 Flags
3Ah uint16 Doodad set index
3Ch uint16 Name set?
3Eh uint16 Padding
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