@Pappenheimer: I agree. That's basically why I still think that there's a bug in c_move. However, my entity can still walk up stairs, so luckily everything is working. (PS: howdy!)

I posted all my movement code to the wiki at: http://www.coniserver.net/wiki/index.php/Modified_Kingdom_Hearts_Movement

@F.Lim: I was worried too that Damocles's solution wouldn't work for my entity because his entity floated above the ground and mine is standing on the ground. However, you can keep the entity on the ground and just lift the bounding box slightly off the ground. This might not be a great solution for a car if you're seeking realistic movement, but it worked great for my little goblin game.