object collisions

[Guest_imported]

how can i make the screen flash when an object collides into another? I was thinking of using a variable 'a' and then a goto 'a' in a blank frame(used to simulate a flash). I don't know how to make variables global though and i am assuming that thats my problem.

 

[defkon2012]

the best way to do that would probably be with _hitTest.
It returns a Boolean indicating whether or not a movieClip intersects with a given point or another movieClip.
Then to get the screen to flash you should have a different movieClip with an animation for the effect.
So lets assume your two movieClips are mc01 and mc02. And the screen effect is called flash.
Your code would look something like this.

if(mc01.hitTest(mc02)){
flash.gotoAndPlay("on"
}

that should give you an idea of how it could work.

defkon2012