Battlezone 1

I am trying to port BZ1 maps to UDK and I need the maketrn source code to understand how the map files(not map textures) are used together so I can accurately port BZ1 maps to the Unreal Development Kit.

Thanks,

I don't think it exists where anybody can find it. It's as easy to find as the RO source code, UNZFS source code, etc. We were lucky enough to have Ken Miller with the BZ source code making a patch.

Mainly I need the format of the *.mat file. Do you think if I asked Mr Miller extra nice, I could at least get the format specs?

From what I can tell based on the source code, the terrain is organized as an array of "zones". Each zone consists of a 128x128 grid of 12-bit height field entries (the .hgt file) and a 64x64 grid of 16-bit material entries (the .mat file). The material entries are a bit complicated since they pack a lot of data into a very small space.

From least-significant bit to most-significant bit:
2 bits at shift 0 (0x0003): Variant
2 bits at shift 4 (0x0030): Rotation
1 bit at shift 6 (0x0040): Flip
1 bit at shift 7 (0x0080): Cap
4 bits at shift 8 (0x0F00): Next
4 bits at shift 12 (0xF000): Base

If Base and Next are the same, it's a Solid tile
If Cap is 0, it's a CapTo tile where Base touches Next on only one side
If Cap is 1, it's a DiagonalTo tile where Base touches Next on two adjacent sides
Variant selects from several similar textures for the tile (_A0, _A1, _A2, and _A3)
Rotation, Flip, and Cap combine to select the texture coordinates for the tile:
0: (u, v) cap 0
1: (-v, u) cap 90
2: (-u, -v) cap 180
3: (v, -u) cap 270
4: (-u, v) flip across z
5: (-v, -u) flip across -x/z diagonal
6: (u, -v) flip across x
7: (v, u) flip across x/z diagonal
8: (u, v) diag 0
9: (-v, u) diag 90
10: (-u, -v) diag 180
11: (v, -u) diag 270
12: (-v, -u) flip across -x/z diagonal
13: (u, -v) flip across x
14: (v, u) flip across x/z diagonal
15: (-u, v) flip across z

Fun, eh?