splatPrototype.texture broken?

Unity Engine
1

Hi all.

So lately ive been playing with the terraindata.splatPrototype variable. It contains the texture from what I can tell that i am using to create my terrain. So if I got grass,sand,dirt.

terraindata.splatPrototype[0].texture.name == "grass"

and this is allowed/true, I check the splatPrototype’s name after wards and it checks out.

So my problem is when I try something like

terraindata.splatPrototype[0].texture = grassTxt;

IT compiles and runs, no errors, but it never changes the texture.

Any idea why I can assign these variables, but they still do nothing? Is this a built in problem or am I just going crazy. Any idea how to get around this.

2

I’ve run into a similar problem, even after using the Flush() method to (allegedly) apply the changes.
Why is there virtually no documentation for anything dealing with runtime modification of terrain?

3

Same problem here, I’m trying to change the textures on the terrain through a custom editor script with something like this :

terrain.terraindata.splatPrototype[0].texture = MyTexture;

If I then output a Debug.Log, my splatPrototype still has the same value even though the function above does not report an error.

Any idea on how to make this work anyone ?

EDIT: I actually found a workaround by modifying the content of the textures while keeping the same file name instead of jumping from a texture to another, seems to work…

4

Terrains and GUI are two of Unity’s serious failings. I’ve just come across this problem myself. This order worked for me:

  • Create TerrainData (set all properties – detail resolution, size, etc)
  • terrainData.SetHeights()
  • Add TerrainCollider and have it use terrainData
  • Create an array of SplatPrototypes and fill it with texture references
  • terrainData.splatPrototypes = array created in the previous step
  • terrainData.SetAlphaMaps

And yeah, once the splat map prototypes are set, nothing can alter the textures that they use except Unity’s terrain inspector.