Track mask file

The file TRX_MAS.BKP, once decrypted, contains information about the terrain where you car is going. This file is a mask that can by applied to the TRX_IMA file to know in wich terrain you are.

Offset (byte)	Size (bytes)	Information
0	10	RIX3-header
10	768	circuit palette (for reversed circuit, the game use TRX_FLIP.PAL)
778	circuitHeight*circuitWidth	The terrain type.

Terrain values:

Terrain value(byte)	Information
0	-----
1	-----
2	-----
3	-----
4	-----
5	speed = speed -speed
6	speed = speed -speed * 0.11111111
7	speed = speed -speed * 0.050000001
8	-----
9	-----
10	-----
11	TURBO ZONE, speed = speed + speed * 0.013333334
12	-----
13	speed = speed - speed * 0.033333335. Random car direction
14	speed = speed -speed * 0.025
15	-----