How to check who's object collides and change frame?

Hi,

How to change the frame of two objects when it collides each other?

Thanks.

If they are different object types you should be able to check collisions separately, or pick the colliding object by getting the first instance (0). If the objects are of the same type it gets a bit more tricky.

https://www.scirra.com/forum/check-vars-when-instances-of-same-object-collide_t83220

Let's say you have two Sprite objects called A and B. On the event sheet you make an event for A object: On collision with B. Then you add the Set frame action for A and/or B objects to that event. Since a collision picks the two instances taking part in the collision, you can set their frame just by checking the collision and using the set frame action.

Thanks rf900 and — Appreciated.