Reply To: What if the walls are not straight?
HI Nathi,
Not sure if Thom will check the questions on this Course, but collisions are hard to calculate, when Objects get more complex. With a Monkey Head, each Face would have to be considered as a separate ‘wall’.
A Sphere would be a lot easier than a Cube, it’s the simplest Object in 3D. Just a Point (the Center) and a Distance to that Point. The Normal of any Surface Point, is the Vector from that point to the Center.
More Complex Objects can often be approximated by simpler forms:
You can also combine things, like Distance to Center, but not Less Than Zero (for instance):
Hope this helps a bit.