Collisions simply aren't working

[mussashimits]

Hi,
I'm running into all sorts of problems in making my game. For one thing the collisions aren't working.

When obj A collides with obj B, obj A should play another animation. Yet obj A can even overlap obj B without this event taking place. I've tried just using fine detection so the sprites would detect one another, and I've tried using active pictures- colors squares that follow each entity.

As I'm sure it could be due to many reasons, I'd just like to know- would the fact that the game is running slow cause this to happen? Perhaps it skips the frame in which the two objects would have collided?

EDIT: I forgot to mention- sometimes the collision works, other times it does not. And it seems that if I move object A into object B, the collision works, but if object B reaches object A on its own, it doesn't. (I have a scenario where I control object A and obj B follows it).

I've also tried switching between "collides with" and "overlaps with".. would anyone be willing to explain the difference to me?
Thanks very much

[xerus]

Are you sure the collision itself isnt working, or is the animation not working? If you are trying to play a special animation, and you already have an animation like "Walking" playing, the animation probably wont play because it will be overridden by "Walking" immediately.

[mussashimits]

Sorry, I'm really not sure what you mean. But all of these animations are custom animations with custom names

[xyzzy]

active pictures have had collision problems recently (so they probably won't help), which should be fixed by the next beta

try setting the Stopped animation for Object A to Loop. It probably won't help here, but it helps with other things regarding animations

Difference between the two:
Collides With - Triggers the actions only once when the objects touch, and won't trigger again until they stop touching and touch again
Overlapping - The actions are triggered continuously as long as the objects are touching

[Sarah]

Mussashimits, why not put a simple example of what you're doing in the File Archive for us to take a look at and fix for you. Just use very simple small animations, because there's a size limit of about 300kb.