2D collisions for adventure games

Blitz3D Forums/Blitz3D Programming/2D collisions for adventure games

Anyone know a good way to set up a collision system for 2D stillscenes Monkey Island style? I have no idea where to even start with this, how did they do it in the old days? 3D commands are no good, I have a collision system with invisible 3D objects already and it works fine but for several reasons I can't really use it.

EDIT: Oops, wrong forum. Any moderators up for moving this to beginners area?