2012
2011
The life of a Games Programmer: Collision detection...
(via)Lemmings never did full sprite to background collision checking, in fact all it did was test a pixel at the feet of a lemming, into the mask. And you could do that directly in GML if you wanted to! In fact, Lemmings had a "1600x160" play area, and you could easily convert this to a 200x160 "BIT" per-pixel mask.
2009
2008
N Tutorials - Broad-Phase Collision
tutorials on object-tile collisions, with ideas out of "game programming gems"
2007
GMAN-GAMES: Programming M.C. Kids
How collisions where handled in MC Kids platformer. Featuring "hot points", "hill tiles" and the like ...
1
(9 marks)