In the manual it is recommended to have terrains smaller than 32x32. It is probably unneeded to support larger terrains. oh you fixed it. cool!

Pointer to skill? hmm.. I have no idea.

That code is a lot more compact than mine, which is a very good thing. My 14-year-old code is no where near your standard!

I get a compilation error in line 73. the variable 'x' is undeclared. When i get rid of the cleanup lines it compiles though..

When i press the up arrow, no ripples are anywhere. Or is this part of the problem?

Anyway, great job!