Hi, I'm aware that's there is another thread on a similar topic, but mine is slightly different. I don't want to react with every kind of slopes, instead, I want the player to interact with 2 object a 45° wall and a 22.5° wall. I tried to do it with basic trigonometry, and it clearly does not work. I need help. EDIT : i forgot to say but, the tricky part is that i need to keep my momentum.