Hello, I'm currently developing a platformer-adventure game using GameSalad. So far I've met only 2 problems with it. Could you please help me solve them? Could you please give me some tips on them? 1. How can I make my actor move only when I'm manually changing it's velocity when it still has to bounce when colliding with other actors? I think it's Physics what I mean. How can I disable physics? I'll give you a real example: door. I need door to be movable to move them to a certain position when some action is done to open it. But I need it to stay in place when colliding with a player and it can't let the player pass through. Well I can make it unmovable and change it's movable attribute to true when door attribute is opened but then my door is still able to be moved while it's opening. I hope you got me right. 2. Second thing is a problem with my Player actor. It has to be affected by gravity so I make him accelerate to the bottom and then friction affects player's movement so I changed friction to 0 but now when my player has to climb up onto rotated platform, it slides down and doesn't stop sliding. I want my player to walk at the same speed on the rotated platform as always. Thanks for the help.