I know, I really struggled to make a good collision system. Thank you to have made the effort to change the code to play my game, I really appreciate it.

Another mistake I did among many others. That was my first game ever and I had so much problems when I tried to program the collision myself. I just learned few hours ago of a module (pymunk), that propose a physic system that can be use with pygame. I'm an idiot, I will do better next time.

I encounter a problem, you can only run it with linux. But if you want you can run the source code with python. In that case make sure to have the pygame module installed.