Spring RTS Engine

So I'm trying to write some custom terraform lua that will set the height map whenever a certain "terra pylon" building gets built.

the documentation says but what exactly are the x1,z1 and x2,z2 parameters referencing?
Does it terraform the area between the rectangle defined by these points:
[x1,z1] [x2,z1]
[x1,z2] [x2,z2]
or the rectangle defined by these points?
[x1,z1] [x1+x2,z1]
[x1,z1+z2] [x1+x2,z1+z2]


That is, are the four parameters defining 2 points on a rectangle or are they in the form (cornerX,cornerY,rectangleWidth,rectangleLength)

?

1) probably absolute coordinates
2) would've been xSize/zSize, sizeX/sizeZ, or rectX/rectZ or something if they were to denote rectangle size
3) try it out..

It terraforms
[x1,z1] [x2,z1]
[x1,z2] [x2,z2]

If only 3 params given, (x,z,height) then it wil terraform a single heightmap pixel.
Remember that the x and z params given here are worldpos/8 in scale.

I would suggest something like this:
http://code.google.com/p/zero-k/source/ ... m.lua#3213 to line 3277

Unless you want a rectangle there is not much point using your function because the heightmap is really a set of points. Apparently Spring.SetHeightMapFunction is faster than multiple rectangles.

ok, got it. I can now make big flat plateus with this code: this makes nice flat areas, but once you get to the edge of that, there is a sheer clif dropoff to the original terrain height. What code can I apply along the edges of the clif to make it a vehicle-passable smooth slooe?

by setting the height map: something like this except you'll want to do it linearly instead as a gradient