i don
Revert "i don"

This reverts commit 6e2d5fd045b6eb3865f8e420f8656d4c48bfc055.
Revert "redundant calculation removed"

This reverts commit 685f4b8a079e54a98231d0f7cc07ab3968ef885c.
Revert "variable name change (trivial)"

This reverts commit cbec31217bfbf33f562e5c925a1e7fbc5780ce51.
Revert "working on wall collision detection"

This reverts commit 5a1e49d47237d133caff8ea6d1d4ee2be101d9ac.