Question by Lost_Syndicate · May 24, 2018 at 12:43 AM · c#terrain destroy

Deform of terrain? (Real-time)

I'm making a game that includes mining, And I'm wondering how do you subtract terrain through scripting, and reset it to its original state after play testing? I look on youtube, but all of the videos include Adding height, not subtracting. Some features are: You mine where you look, (Left/Right) clicking; The derode is circular, in a small area, and I also need it to be addable, So you can keep mining forever. (Do all of this in Real time)

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Deformation_Terrain : MonoBehaviour {
 
     public Terrain terrainMain;
 
     void OnGUI()
     {
         if(GUI.Button(new Rect(30, 30, 200, 30), "Change terrain height"))
         {
             // Get the terrains [x,y]
             int xRes = terrainMain.terrainData.heightmapWidth;
             int yRes = terrainMain.terrainData.heightmapHeight;
 
             // Manipulate current heights value, and set it as an array using [x,y]
             float[,] height = terrainMain.terrainData.GetHeights(0, 0, xRes, yRes);
 
             // Change height, maximum height is 1, and lowest is 0.
             height[10, 10] = 1f;
 
             terrainMain.terrainData.SetHeights(0, 0, height);
 
 
         }
     }
 
 }

Code - (Like requested)

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Scribe · May 25, 2018 at 07:05 PM 0

If you know how to add height, then just put a $$anonymous$$us sign in front of the value... You might need to initialize the terrain heights to be 1 so that you can go down. Unity terrains have a $$anonymous$$imum and a maximum height so you can never use them to $$anonymous$$e 'forever' but you could set the position to be very very low down.

Alternatively you could go generate a mesh procedurally a bit like in a voxel system which would allow you to break the mesh up into smaller chunks and allow you to have quite good resolution 'locally' whilst not burning all your resources on a huge ~infinite~ world.

If you share some of the code you have managed then someone may be able to help fix/improve it.