Collision detection is the process of determining whether objects in the game world are intersecting or will be intersecting soon. The collision can be resolved in a step called "collision response". This is used to make objects react to each other in a more or less convincing way.
- Pixel-perfect collision detection with SDL
- Rectangular and circular collision detection in VB
- 2D convex polygon intersection in C - source code for the "Oriented Bounding Box" (OBB) test.