.xxw Format

Overview

Terrain files (*.xxw) represent a single terrain to be used by a world. This format was used in Star Wars: The Clone Wars.

This page contains snippets of research.

Terrain Header

The Terrain Header is always 1152 bytes in length.

ad  length  type    ex          desc
0   4       ?       1152        ?
4           long    3           version?
8           long    1024        terrain size?
12          int     257         ?
16          int     2           ?
20          float   32          grid size?
24          float   0.1...      ?
28          
32          int     128         map size?
36
40          int     128         extents with 8? or 6 sets of RGB colors?

64-124      float               Tile-range for each texture layer


1,668 -     514 size chunks?
132,218
--- BLOCKS
size * size (* 2) heights
xV4_ ?

Offset	Data Type	Size (bytes)	Description
0	byte [4]	4	Header size indicator (1152).
4	long uint	4	File format version? (03)
8	long uint	4	? (1024)
12	long uint	4	Terrain size. (257, 513)
16	long uint	4	? (2)
20	float	4	Grid scale. (32, 16, 8)
24	float	4	Height scale. (0.1, 0.03, 0.23)
28	long int [4]	16	Map extents (i.e. -256, 256, -256, 256 for a 512x512 map)
44+	?	20	?
64	float [16]	64	Tile-range for each texture layer. 0.031 (1/32): the texture spans 32 meters. This is stored as 1/X of the value in ZeroEditor.
128	TextureLayer [16]	1024	Texture layers (see below).

Terrain Blocks

The Terrain Header is always 2821 bytes in length.

Name	Data Type	Size
Height	signed short	*Terrain size Terrain size** * 2
		Height value for every point on the grid. This value will be multiplied with the map scale multiplier.
?	?	Size: (Terrain size - 1) * (Terrain size - 1) * 2

?	?	Size:
		Chunks with 38 bytes of data?

Terrain Structs

TextureLayer

Data Type	Size (bytes)	Description
`char [32]`	32	Diffuse texture name.
`char [32]`	32	Detail texture name.

WaterLayer

Data Type	Size (bytes)	Description
`float [2]`	8	Water height value (twice).
`byte [8]`	8	Unknown, always zero.
`float [2]`	8	UV animation velocity.
`float [2]`	8	UV animation repeat.
`byte [4]`	4	RGBA color values.
`char [32]`	32	Water texture name.