Actuate something only once (when it enters the scene)

Game Engine Game Engine Support and Discussion
1

I need a starting velocity but that’s it. I’m making a rock fly from a catapult.

2

Solved, please help in my other thread

3

Thanks for sharing the solution.

4

Previously, I had 1 sensor saying the catapult was fire ready, connected to a message and an action. They were both running frequently, so I made a new sensor, and then linked the message to it. I rearranged the keyframes in the action so they aligned with the new sensor, and then made a delay in the length of the action. One linked to the edit object, and the other to object velocity, so instead of adding the object a bunch of times and having a constant velocity, I separated those too.