sector height

[CBM]

is it possible to use a zscript to control the height of a sector on the fly?

[Caligari87]

Yes, though figuring out how requires some code-diving because ZScript isn't really ideal for map scripting. Here are the methods available to sector planes in gzdoom.pk3/zscript/mapdata.zs at line 199, including ChangeHeight().

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struct SecPlane native play
{
	native Vector3 Normal;
	native double D;
	native double negiC;
	
	native bool isSlope() const;
	native int PointOnSide(Vector3 pos) const;
	native clearscope double ZatPoint (Vector2 v) const;
	native double ZatPointDist(Vector2 v, double dist) const;
	native bool isEqual(Secplane other) const;
	native void ChangeHeight(double hdiff);
	native double GetChangedHeight(double hdiff) const;
	native double HeightDiff(double oldd, double newd = 1e37) const;
	native double PointToDist(Vector2 xy, double z) const;
}

In that same file at line 340 you can see that a Sector struct has two SecPlane members:

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	native readonly @secplane floorplane;
	native readonly @secplane ceilingplane;

So in zscript, you can do something like:

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level.sectors[sectornumber].floorplane.ChangeHeight(hdiff);

I believe hdiff is a relative amount to the plane normal (may be either positive or negative depending on floor or ceiling?), so you'll need to do some math and experimentation.

[Sir Robin]

Hi, I know this is an old thread but found it because I'm trying to do the same thing - change the floor height in zscript.

I tried Caligari87's way but I get told that the object on the left side of ChangeHeight is read-only (this is on 4.7.1 so maybe it was not on earlier versions?)

Anyway, I got mine working by calling special 37:

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	static void ChangeFloorHeight(int tag, int height)
	{
		Level.ExecuteSpecial(37, null, null, false, tag, int.max, abs(height), height < 0 ? 1 : 0);
	}