It seems to be quite indestuctible. The only hiccup was when the player got stuck under the stairs. Also, if you continuously click the left mouse button, it will increase the function count by one for each click. So, if I press the button 50 times before the player gets to the spot, there will be 50 functions running on top of whatever runs all the time. If you click a null spot, it zeros out(except for those 6-7 always running functions), and the player stops moving.

Anyway, congratulations...this is perfect for a point & click game..adventure or otherwise.