Collision detection

dgm · Post by **dgm** » Mon Dec 18, 2006 7:25 pm

Hi,

I want to make a simple game like pong and would like to know how I can detect that the moving image has hit the wall ( an object or edge of the card) so it can bounce back. I have looked without success in the documentation.

Thanks,

Dennis

Mark · Post by **Mark** » Mon Dec 18, 2006 9:41 pm

Hi Dennis,

You could check whether the topleft, topright, bottomleft or bottomright of your moving object is within the object that depicts the wall. You could also check out Animation Engine.

Best,

Mark

malte · Post by **malte** » Tue Dec 19, 2006 8:39 am

Hi Dennis,

to check ball / paddle and ball / brick collisions the built in intersect() function should be what you need.

if intersect(button "ball",button "paddle") then
-- collision occured
end if

If you need more sophisticated collision detection and/or asynchronous movement, AnimationEngine can help you.

All the best,

Malte

marielle · Post by **marielle** » Tue Dec 19, 2006 9:44 am

You could also give a try to the free library that Jock made available:

Forum Post::Announcement::image collision library

dgm · Post by **dgm** » Wed Dec 20, 2006 5:35 am

Thanks guys, this is just what I was looking for.

Dennis