Suppose I have a collision between two different sprites, A and B. The two are somehow “different”. I do not mean visually but have attributes that give them special characteristics. For arguments sake let us say that they both have a “weight” with B being heavier than A (the actual criteria I want to use are rather more complex but the principle remains the same)
In my own case when the two collide I want to change their linear velocities. However, the way in which the velocities of A (lighter particle) changes depends on the way the velocities of B (heavier particle) change.
What is not clear to me is this - from what I can see both A and B get the collision_response message , and so it should be. What I need to do is to be sure that the collision response for A (lighter) is handled AFTER I have successfully created the collision response for B (heavier). How do I go about doing this in a foolproof way?
From what I can see whether A gets the message first or B is haphazard. If each goes about processing its messages entirely oblivious of the other than I cannot ensure the response pattern I am after.