WDT
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.
MPHD chunk
Contains 8 32-bit integers.
uint32 flags; uint32 something; uint32 unused[6];
These are the only flags checked:
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 : Use vertex lighting (ADT.MCNK.MCLV) 0x20 Flips the ground display upside down to create a ceiling (Cataclysm)
See a list here.
The second integer is not ignored but stores something too:
for( int i = 0; i < WDT_MPHD.something/8; i++ ) { WDT_MAIN[i].flags = 0; WDT_MAIN[i].somedata = 0; }
The other bytes seem to be unused from what I can tell.
MAIN chunk
- Map tile table. Needs to contain 64x64 = 4096 entries of sizeof(SMAreaInfo) ( 8 ) bytes each.
struct SMAreaInfo // -> CMapAreaTableEntry { uint32 m_flags; void* m_area; // only set during runtime. };
- Flags:
- CMapAreaTableEntry::Flag_HasADT = 1,
- CMapAreaTableEntry::Flag_Loaded = 2,
On Cataclysm, 2 on a tile displays "fake water" ingame.
Blizzard was just too lazy to compress the files here. A simple bool array and adding the fields when parsing would the alternative. We just need to know the &1 flag.
MWMO, MODF chunks
For worlds with terrain, parsing ends here. If it has none, there is one MWMO and one MODF chunk here. The MODF chunk is limited to one entry. See the ADT format description for details.
MWMO chunk
- A filename for one WMO (world map object) that appears in this map. A zero-terminated string. 0x100 is the maximum size for this chunk due to being copied into a stack allocated array (at least in MOP)! (including \0).
MODF chunk
- Placement information for the global WMO. 64 bytes. Only one instance is possible.
Offset Type Description 0x00 uint32 ID (index in the MWID list) 0x04 uint32 unique identifier for this instance 0x08 3 floats Position (X,Y,Z) 0x14 3 floats Orientation (A,B,C) 0x20 3 floats Upper Extents 0x2C 3 floats Lower Extents 0x38 uint16 Flags 0x3A uint16 Doodad set index 0x3C uint16 Name set? 0x3E uint16 Padding
struct SMMapObjDef // 03-29-2005 By ObscuR { /*000h*/ UINT32 nameId; /*004h*/ UINT32 uniqueId; /*008h*/ float pos[3]; /*00Ch*/ /*010h*/ /*014h*/ float rot[3]; /*018h*/ /*01Ch*/ /*020h*/ float extents[6]; /*024h*/ /*028h*/ /*02Ch*/ /*030h*/ /*034h*/ /*038h*/ UINT16 flags; /*03Ah*/ UINT16 doodadSetIndex; /*03Ch*/ UINT16 nameSet; /*03Eh*/ UINT16 pad; };