Avoid duplicitous collisions?

#1 After the collision occurs you could disable collisions on the object, and then set a schedule to turn them back on again.

#2 Hey, that seems to have worked pretty well (after a brief test). I just hope that it still works under bad framerate conditions since the schedule() isn't based on scenegraph time. Thanks for the suggestion, Philip! :)

#3 Increment a counter for each collision that refreshes per sceneTime tick, and check it with an if statement to make sure that value isn't greater than 0?

#4 That's a good idea, too. I was saving the "last collided object" and the "last collision scene time" and comparing them on each collision, but it didn't seem to work. *shrugs*

Turning off collisions and then scheduling them back on works ok, but there are some cases where the objects slide through each other somwhat, so I don't use it for everything.

#5 Matt, Nice idea. I have some code that uses schedules and I was concerned about the lack of synchronisation between schedule timings and scene updates. Thanks!

#6 I struggled with multiple collisions causing problems then found an easy away around this. I check the object's tag (which I set for all objects). Just set they colliding object's tag to null - then subsequent collisions will not meet the criteria - maybe my code will better explain:

//-----------------------------------------------------------------------------
// Name: fxSceneObject2D::onCollision(%srcObj, ...)
// Desc: Called when a collision is detected
//-----------------------------------------------------------------------------
function fxSceneObject2D::onCollision(%srcObj, %dstObj, %srcRef, %dstRef, %time, %normal, %contactCount, %contacts)
{
   // Handle the source object
   switch (%srcObj.tag)
   {
		// Player hit something
		case "player":
			
			if (%dstObj.tag $= "oilslick")
			{
				// Make sure you can't collide with dstObj more than once
				%dstObj.tag = "";

				echo("Collided with oilslick");
				
				// Disable controls
				playerMap.pop();

				// Spin car sprite
				$player.setAngularVelocity(360);
				 
				// Stop spinning car sprite in 4 seconds
				schedule(4000,0,stopSpinning);

				// Skidding Tires Audio.
				alxPlay( skiddingTiresAudio );
			}

			if (%dstObj.tag $= "jump")
			{
				// Make sure you can't collide with dstObj more than once
				%dstObj.tag = "";

				echo("Collided with jump");
				
				// Jump car sprite
				playerJump();
			}
   }
}

Hopefully this will help some of you out - I am still learning so feel free to point out any troublesome parts with this method.