3D model format
Stores 3D models, more investigation needed.
Thanks to Martin for initial format reversing.
- Magic -
PMD V1.83- some files use version 1.82 instead, but they aren't used by the game, the engine in PC version won't recognise anything other than 1.83
- There is one unused mention of
PMD V1.71in the game binary
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x18? | Magic - PMD V1.83
|
| 0x18 | 0x4 | Type - 0 = shadow & skybox; 1 = track; 2 = car |
| 0x1C | 0x4 | Zeroes? |
| 0x20 | 0x94? | offsetsTable? array of 37 ints, might need to add constant 0x148 for elements 0-12 |
| 0xB4 | 0x94? | Sizes of data chunks ,array of 37 ints |
offsets1Table
- Looks like indexes 12,
13, 19, 34, and 35are always set to 0 in all known models 14-33 (minus 19 of course) is only set if the type is set to track (1)- I was off by 3 bytes, need to redo that part
You have to add 0x148 to each value to get proper pointers (works with elements 0-12, later ones will probably need different bias)
All blocks (or at least 0-11) are 32-bytes aligned, 12 is aligned so that the next block is 32-bit aligned
| ID | offset | size offset | Description |
|---|---|---|---|
| 0 | 0x20 | 0xb4 | track stuff??? |
| 1 | 0x24 | 0xb8 | polygons data? |
| 2 | 0x28 | 0xbc | UV texture data? |
| 3 | 0x2c | 0xc0 | vertex data? |
| 4 | 0x30 | 0xc4 | faces data? |
| 5 | 0x34 | 0xc8 | Textures names |
| 6 | 0x38 | 0xcc | Offsets to texture names, absolute addresses in file |
| 7 | 0x3c | 0xd0 | Each element is 16B long, ?, ?, float, float |
| 8 | 0x40 | 0xd4 | Holds IDs of elements in 7 |
| 9 | 0x44 | 0xd8 | surface transforms data? |
| 10 | 0x48 | 0xdc | surfaces data? |
| 11 | 0x4c | 0xe0 | |
| 12 | 0x50 | 0xe4 | Offset is 0x0; the size is non-zero, for shadow it's 1, with one 00 byte, size is checked for tracks
|
| 13 | 0x54 | 0xe8 | |
| 14 | 0x58 | 0xec | track stuff |
| 15 | 0x5c | 0xf0 | track stuff |
| 16 | 0x60 | 0xf4 | track stuff |
| 17 | 0x64 | 0xf8 | |
| 18 | 0x68 | 0xfc | |
| 19 | 0x6c | 0x100 | |
| 20 | 0x70 | 0x104 | |
| 21 | 0x74 | 0x108 | track stuff |
| 22 | 0x78 | 0x10c | track stuff |
| 23 | 0x7c | 0x110 | track stuff |
| 24 | 0x80 | 0x114 | track stuff |
| 25 | 0x84 | 0x118 | track stuff |
| 26 | 0x88 | 0x11c | track stuff |
| 27 | 0x8c | 0x120 | track stuff |
| 28 | 0x90 | 0x124 | track stuff |
| 29 | 0x94 | 0x128 | track stuff |
| 30 | 0x98 | 0x12c | track stuff |
| 31 | 0x9c | 0x130 | track stuff |
| 32 | 0xa0 | 0x134 | track stuff |
| 33 | 0xa4 | 0x138 | |
| 34 | 0xa8 | 0x13c | |
| 35 | 0xac | 0x140 | |
| 36 | 0xb0 | 0x144 |