NGP.md

NGP

.ngp files store models, texture data, the model data, UV coordinates and presumably some other data (animation, normal maps etc.)

Header

The header is 0x20 bytes long.

Offset	Length	Example	Name	Notes
0x00	0x08	0x696570334616A42B	Magic Number	NGPs always start with this
0x08	0x04	0x466F37AB	Object Identifier	Present in PTR and VRAM file headers for same object
0x0C	0x04	0x0000001C	Table 1 Pointer	Relative pointer
0x10	0x04	0x00000070	Texture Table (Table 2) Pointer	Relative pointer
0x14	0x04	0x00095FB4	Table 3 Pointer	Relative pointer
0x18	0x04	0x00002F68	Data 4 Pointer	Relative pointer
0x1C	0x04	0x000022E0	Data 5 Pointer	Relative pointer

Overall File Structure

• Header
• Table 1
• Texture Table (Table 2)
• Unknown
• Model headers (maybe includes pointer to texture headers?)
• Unknown
• Model data
  1. Face data - Each face is 3 vertex indices which are shorts
  2. Vertex data - short_signed
• Unknown
• Snippets of stuff with a header (at the bottom of the data?) that includes strings like "hud" and "vehicle"
• Unknown
• NGP Texture Headers
• Unknown
• Texture data (pointed to by the NGP Texture Headers)
• Unknown

Subparts

• Table 1
• Texture Table (Table 2)
• Table 3
• Data 4
• Data 5
• Model Headers

Notes

In addition to the terminology outlined in the docs README.md, there is some terminology specific to NGP:

Standard Table

Offset	Length	Example	Name	Notes
0x00	0x04	0x00000001	Number of entries in table
0x04 + (n * 0x04)	0x04	0x00000804	Entry in table	Relative pointer