SC2Mapster

I want to make a... Behavior, I think? ...that, if a unit is moving (Validator?), compares its current absolute Z postion to its Z position on the previous cycle and if the former is less than the latter, apply a stacking movement-speed buff.

There's probably more than one way to do this, and I know I could do it with triggers, but I want to do it so the performance hit is as small as possible.

(I also want to make a behavior that operates when a unit is idle, making them slide down hills. I have only vague notions of a Search Area for terrain Z and Apply Force, but I'm more concerned with the while-moving behavior. Actually, now that I think of it, does Apply Force stack with ordinary movement? I mean, if the force is applied in the same direction the unit is executing a move command.)

@DrSuperEvil: Go

Hmm... actually, how about this? Compare Z-height of terrain at position of unit to Z-height of train at position-of-unit-offset-by-small-distance-behind-unit. How would I do that?

@DrSuperEvil: Go

What about a unit's absolute Z position?

Could a behavior periodically create a model-less(actor-less?) dummy unit a short distance behind the first unit, and compare their positions with a validator?