Use Cases:

• Any source, which is producing particles, could be used for more complex effects than only visual effects
• Additionally: You could react with ppEffects on different particle sources (for example teargas or other crowd control mechanisms)

Possible solution:

• Attach an eventhandler directly in the engine to particles, which detects if a procued particle collides with some other object. Could possible utilize the existing rubble handler to inject other types of commands

The event handler would need:

• Particle source object

Challenge: It should not be activated per default. For saving performance, this feature needs to be activated / deactived per source type or source object.

Reverse Handler: Attached to object

• Utilize for example EPEContact to determine, if a particle hits an object, which is being hit by an article
• Or - stick the particles to a object, if he collides for some milliseconds. And and a event handler, if object has sticking particles count > 0.