Good afternoon,   I'm trying to implement mesh collisions instead of a physics system (turns out that it costs to much in performance and i don't have the time to implement it right now), at first look it looks simpler. Although... I wen't looking at the tutorial and at dad72 example, and I'm not beeing able to implement it. I don't understand the concept behind the moveWithCollisions function and the velocity vector3. In my game I don't have a velocity var, the player point and click and the sh