Hi all. This is probably a question with a very simple answer, so my apologies in advance if it''s obvious. I did check the forum FAQ. I have a ball bouncing around. I also have static objects, constructed from cuboids, with which the ball might collide. I would like to know how I can detect this, given that the collision could occur at any angle. My idea so far is that I should take the displacement vector between the sphere and cuboid and project it onto each of the three unit vectors aligned with the normals of the cuboid''s faces. I hope that makes sense. If the magnitude of each of these projections is less than the radius of the sphere, a collision would be detected. I am not sure if this is correct, though, and I am not certain how I would know with which of the faces of the cuboid the sphere had collided. Any advice would be much appreciated Thanks. Harry.