Recreation and analysis of the physics engine from the classic racing game from 1995.

This project aims to reconstitute/reverse engineer accurately as possible the physics formulas used in the game, decompiled from DOS, PSX and 3DO binaries, and manually rewritten to C.

• 2D car driving simulation, with a 2-wheel tire grip model;
• 3D box rigid body collision physics;
• Engine, clutch and transmission simulation;
• AI opponent driver;
• Now supports loading TNFSSE "TRI" track files, or it will auto generate a random track, if not supplied;
• Fixed point math;
• No assets required;
• Basic wireframe 3D graphics;
• SDL2/OpenGL 3D in pure C.

1. clone/download repo;
2. install libsdl2-dev;
3. make
4. run ./build/tnfs [<optional_track_file.tri>]

Use the keys to drive:

• Up/Down - Accel and brake
• Left/Right - Steer
• Space - Handbrake
• A/Z - Change gears
• C - Change camera
• D - Crash opponent's car
• R - Reset car
• F1 - Turn ABS on/off
• F2 - Turn TCS on/off
• F3 - Change traction (RWD/AWD/FWD)
• F4 - Change Auto/Manual transmission mode
• F5 - Change cheat modes/easter eggs: 1. Crashing Cars (3DO); 2. Rally Mode (PSX)

• https://ghidra-sre.org/
• https://github.com/grumpycoders/pcsx-redux
• https://github.com/AndyGura/nfs-resources-converter
• https://www.cmls.polytechnique.fr/cmat/auroux/nfs/index.us.html