Algodoo

do you mean that it shouldn't act like a hold when the lazer hits the black box??

yes, i think i have the answer. so here it is : i used some mirrors to redirect the laser beam to not hit the black box.(with a circle) then for hitting it i used another mirror . it makes one or two q's


A link to q's : http://www.algodoo.com/algobox/details.php?id=35544

maybe this is a solution. i uploaded the scene here:
http://www.file-upload.ne … o.phz.html

the laser gets activated remote-controlled and after one hit it deactivates itself which results in one q per key press.
but if you want to make more keys it's better to do it directly via onCollide because you don't need custom variables for the remote-control again and again.

Thanks KarateBrot i used you solution