How do I control particles?

Hey guys,

I want to make particles visible whenever there is collision between two objects, one of the objects is moving and changes the angle so the pin thing doesn't seem to work, any ideas? Please help.

You can pin by angles too, I believe.

Your question is kind of vague.

Well let say that I have a box that is moving on the ground I want to make particles that move with the box while in collision with ground but when I jump the box rotates and when it falls the particles are no longer on the ground since it follow the angle that is the problem with pin?

Are you dragging tin cans behind like a marriage ceremony?

I am not sure how you intend to have objects move "with the box" while still colliding with the ground?

You might have to parse out the x and y directions of the particles and limit each one separately.

Thanks for the help I finally made it!!!