P1 and P2 are shooting (pretty much rapidfire) bullets at each other, and we need to check when one players bullet collides with another players.
Each bullet DOES have a PV 'Player' that is set from 1 to 4, depending on which player used it.
That way if two players use the same character with the same attacks, it can still be differentiated.
@Daiz: That method didn't quite work, but I think I have an idea I'd like to try.[/quote:2lybd6aj]
How did it not work? It should work exactly as you want, since I've used the exact technique myself as well. In your case, the events would go something like this:
+ Bullets1 colldes with Bullets2
+ Bullets1 value 'player' is different to Bullets2 value 'player'
- Destroy Bullets1
- Destroy Bullets2
No matter what the object is, as long as it's in two families differentiating between colliding instances is very easy.