DISCLAIMER: This file comes with no guarantee as to its accuracy, and must not be used to break the law in any way. I accept no responsibility for any problems relating to this document, use at your own risk.
A selection of file formats for Jurassic Park Operation Genesis. Written and researched by Andres.
Material Library (.tml)
Model file (.tmd)
Contain a bunch of textures. Textures can be 16bit or 32bit RGBA, or DirectX Texture (DXT) compressed. Files named "*16.tml" contain only 16bit textures (data_format=2,7), others have data_format=0,2,6 (maybe 7 too?).
struct TMLFile {
char[4] magic = "TML1";
uint unknown = 0x00;
uint num_textures;
array of struct {
uint texture_id; // numbered in reverse order ie. texture[n].texture_id = num_textures-1-n
uint data_size; // see data_format below
uint unknown1;
uint unknown2;
short data_format; // 0 = RGBA 8888 (rgba order), data_size = width*height*4
// 2 = RGBA 5551 (rgba order), data_size = width*height*2
// 6 = Raw DDS file. Either DXT3 or 5 compressed (brga order, as per DXT specs).
// data_size = size of DDS file, as per DDS/DXT specification
// 7 = RGBA 4444 (rgba order), data_size = width*height*2
short width;
short height;
short unknown3; // = 0xFFFF always?
uint unknown4; // = 0x43000000 always?
byte data[data_size];
} texture[num_textures];
uint num_strings;
char[32] strings[num_strings];
array of struct {
uint string_num; // index into strings array
short unknown;
short num_refs;
uint texture_id[num_refs]; // list of texture_id of textures with this name
} string_table[num_strings];
}
Contains a scene graph (including meshes) for a single model. Scene graph nodes have a standard transformation matrix, children nodes, and optional mesh. A mesh is stored conveniently for rendering, each using a single material, with triangles stored as a triangle strip.
struct TMDFile {
char[4] magic = "TMDL";
uint unknown1 = 0x00;
uint data_size; // = filesize - 12
char[8] catagory; // eg. "STRUCT", "MISC", "FLORA"
uint unknown2;
char[4] unknown3 = "IX2",0x00;
uint graph_size; // same as graph_size2
uint unknown4; // this is position 0x20 in file. Related to
// FirstPart.unknown2 at file position 0x74
uint unknown5;
uint unknown6;
uint unknown7[4]; // = {0,0,0,0} always?
uint graph_size2; // same as graph_size
}
// The SceneGraphBlock starts at file position 0x40.
// sizeof(SceneGraphBlock) = TMDFile.graph_size
struct SceneGraphBlock {
short numNodes;
short N; //
short P; //
short Q; //
uint unknown1[11]; // always = {0x00, 0x00, ...}?
uint unknown2; // related to TMDFile.unknown4 (at file position 0x20)
array of struct Node { // sizeof(Node) = 0xB0
float4 rotation; // quaternion
float16 transform; // position float3 starts at transform[12]
float16 invtransform;
byte node_name_length; // number of non-zero chars
char node_name[15];
short parent; // index of parent node
short no_mesh; // 0 if node has a mesh, or if a child has a mesh
// 1 otherwise
float3 pivot_offset; // usually equals transform.position
} nodes[num_nodes];
uint unknown3; // related to TMDFile.unknown4 (at file position 0x20)
uint unknown4; // = 0x71655340 always?
uint unknown5; // = 0x10 always?
uint unknown6[4]; // = {0,0,0,0} always?
uint O; //
uint unknown7; // = 0x3D088889 always?
uint unknown8[num_nodes]; // related to TMDFile.unknown4? (at file position 0x20)
uint unknown9[3]; // = {0x00200000, 0, 0} always?
uint unknown7; // = 0x3D088889 always?
// Kiosk.tmd has two sets of these tables, and has P = Q = 2 instead of 1
array[O] of struct {
uint block_num; // numbered in reverse order
...
}
}
// MeshBlock starts at immediately after the ScenGraph Block
// ie. at file position 0x40+TMDFile.graph_size
struct MeshBlock {
uint unknown1;
uint num_meshes;
uint unknown2 = 0x00;
uint unknown3[4]; // last two sometimes floats
array of struct Mesh {
uint unknown1; // = 0x01 always?
uint tri_strip_size;
uint num_verts;
char material_name[32];
uint A;
uint B;
uint num_nodes;
uint B2; // = B always
float unknown2[6];
uint nodes[num_nodes]; // indexes of scene graph nodes using this mesh
array of struct Vertex {
float3 position;
float3 unknown1; // normal?
float2 unknown2;
float2 texpos;
} verts[num_verts];
// Indexed triangle strip. If any two vertex indicies for a triangle
// are the same, skip it. Eg. vertex indicies for triangles are in:
// {tri_strip[0,1,2], tri_strip[3,2,1], tri_strip[2,3,4],
// tri_strip[5,4,3], tri_strip[4,5,6], tri_strip[7,6,5], ...}
short tri_strip[tri_strip_size];
} meshes[num_meshes];
}
Page created: 11-Aug-2003