Best code examples for terrain generation, AI and quests?

[Derakon]

Oh yeah, come to think, Sangband used to be hilariously unbalanced, like, you could buy as many skills as you liked, crafted heavy crossbows always gave +6 to at least one stat, and there was a crafting skill that let you combine two items into one that had attributes of both, which I seem to recall was buggy and tended to produce functional equivalents of Bladeturner.

Sangband's been around for awhile, is what I'm saying.