There is no luck in combat or anywhere else in the game. It is completely deterministic.
However, there are certain random elements that will behave differently when you start a map several times. The prime example is object growth (which is not activated on all maps). Once you have started a map, the objects will always grow in the same pattern, regardless of saving and loading the game, making undo and whatever (provided that you don't change the available space for object growth, like building roads).
But if you start the same map a second time, the objects will grow in a different pattern.
Last change: Sat, 2009-01-10 21:05