Some scripts to reverse the file formats used in WarHawk.

The ultimate goal of this project is to end up with a collection of scripts that can convert the custom file formats into common formats (eg .obj, .dds). Howver, the emphasis is on the texture and model formats (.rtt and .ngp). Currently, almost all .rtt files can be converted to .dds, and ngp_models.py provides a crude but functioning method of extracting most of the models.

Within the psarc, the file formats used are as follows:

• .rtt - Basically a DDS with a custom header
• .vram - Multiple textures
• .ngp - Stores some texture data, the model data and presumably some others (animation, normal maps, uv maps etc.)
• .ptr - Has list of location for various model header and textures
• .dat - content.dat or external_paths.dat
• .loc - Localisation files (these seem to be in UTF-16 Big Endian)
• .fbin - Compiled fragment shaders
• .vbin - Compiled vertex shaders
• .twk - Config (tweak) files (eg reload time for jeep machine gun)
• .tvm3 - Seems to define the game modes on a specific map

.rtt files can be converted to .dds files with rtt2dds.py. Simply pass the path of the .rtt file to the script:

./rtt2dds.py /path/to/sample_texture.rtt

This will create a sample_texture.dds file in the same path as the .rtt file. The .rtt files can also be dragged and dropped on to the rtt2dds.py script.

There is a --permissive mode that can be used to bypass the checks that validate the .rtt file.

./rtt2dds.py --permissive /path/to/sample_texture1.rtt

The models within .ngp files can be extracted using ngp_models.py:

./ngp_models.py sample_ngp.ngp

This will search the .ngp file looking for a model headers. Each model will be put into an .obj file. If a texture is linked to the model, this will be output to a .dds file with a .mtl (material) file to load it on to the model.

Contributions are welcome.
Feel free to open an issue or pr.