Hello, I know that there are many articles, tutorials etc. about this topic and although I researched a lot I cant get into the whole issue. If you are annoyed, just ignore this post. I am trying to perform a collision detection with moving and rotating sprites (rectangles or squares). I have the position, lenght, width and angle of every sprite. As far as am familiar with collision detection, I have to test the range of every axis projection of the rectangles. If all the axis projections overlap, the rectangles collide. Now I would like to know how I can implement this into my project because I am not quite familiar with the mathematical operations required (at least I know what a vector is). What is the best way to start and what calculations are necessary? Thank you for your help, Phex