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Sixth in a series of ray casting demos: Vertical motions: ability to look up, look down, fly and crouch. To move around, use the arrow keys on your keyboard or: W = move forwad A = turn left S = move down D = turn right Vertical motions: Q = look up Z = look down E = fly C = crouch Checkout the source and other demos in the series in the Git Hub repository Vertical motions section: https://permadi.com/1996/05/ray-casting-tutorial-16/ and https://permadi.com/1996/05/ray-casting-tutorial-17/