Add collision sounds to entities.
Entities have the ability to add a collision sound in the properties which will cause the entity to emit a sound every time the entity comes in contact, or collides, with another entity.
We'll start by making a floor to bounce something off.
The URL to a sound is set in the entity's properties as the Collision Sound URL . The sound must be a .wav file, uncompressed, 48Khz, 16 bit. The URL can be either a web address, or an ATP reference to the assets on this domain server.
For this example, copy the following link and paste it into the space for Collision Sound URL:
Find Gravity and change the value for Y to -5. This will cause it to fall a little more slowly than things on earth (use -9.8 if you want that). Gravity is in units of meters/second^2^.
As soon as you click off, the gravity will cause the ball to fall downwards. When it hits the floor, it should stop or bounce a little and the sound should play.
You can just keep picking it up and dropping it to hear the sound again.
You can duplicate the balls by ALT + Drag and then knock them into each other to get more sounds.