2d vector collision?

BlitzPlus Forums/BlitzPlus Programming/2d vector collision?

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i'm using Blitz3D but since this is a 2D question i figure it's better to ask here..

i'm mostly a 3d kind of programmer but recently i started messing with 2d. it's fun :) i've got a simple tile engine and simple collision. but it only works per-tile. i'd like to be able to do things like balls rolling down slopes. i've heard about vector collision, but i've yet to find a decent example of it or any documentation.

does anyone know of a good tutorial or document or even a piece of code that could help? thanks :)