[solved] trigger_catapult does not check collisions
In my map, the player approaches a cube and wishes to grab it. But before that happens, he steps into a trigger_once and an arm catapults the cube away.
Obviously, the cube needs to be inside of a disabled trigger_catapult, which is then enabled. However, when the trigger is enabled, the cube won't move. -> trigger_catapult doesn't check for collisions when its enabled.
Another thought was to put the trigger slightly above the cube, which is afterwards pushed into it by the robot arm. This, though, makes the cube uncontrolable. It will miss the target and hit other objects in the room.
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I had the same problem with a coop-map: Player 1 lets a dropper drop a cube onto a deactivated faithplate, Player 2 stands on a button to activate the faithplate and fire the cube.
Eventually, I made a 1 unit thick physics clip above a 1 unit thick catapult that got deactivated when the cube was supposed to be launched. I never found another way to do it.
Good workaround zivi7 
Brainstone, have you checked the flag "physics objects" and set the "Physics Objects Speed" to a value enough to catapult the cube?
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[/spoiler]Of course. The catapult works if I lift the cube and let it fall into the trigger.
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OK, I've found this thread here. Looks like it is a known and common issue with the trigger_catapult entity. If the cube is already sat down on the trigger, it won't get launched, however if the cube isn't there and touches the trigger_catapult enabled, it is launched.
In this thread 2 ppl suggests a good workaround: use a trigger_push below with direction of push set up (-90 0 0) with some low push value (that makes your cube reach the trigger_catapult ofc 
), and problem solved.
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What happens if a func_clip_vphysics is enabled around it? Same problem?
Also, chariots chariots. 
What was the pre-DLC2 rank for having over 500 posts?
Okay guys, thanks for your help. I did it zivi7's way.
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