koobas.hobune.stream
How to randomly spawn GameObject on a Terrain
Hello, I have an issue with my script - I want to spawn random amount of trees on a terrain. The problem is - trees just ignore the terrain and spawn inside of it, but not on a terrain. Please, help! Here's my script:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class TreeSpawner : MonoBehaviour {
public GameObject Tree;
public Terrain terrain;
private int terrainWidth;
private int terrainLength;
private int terrainPosX;
private int terrainPosZ;
void Start () {
terrainWidth = (int)terrain.terrainData.size.x;
terrainLength = (int)terrain.terrainData.size.z;
terrainPosX = (int)terrain.transform.position.x;
terrainPosZ = (int)terrain.transform.position.z;
}
void Update () {
int randNumber = Random.Range (50, 100);
if (Input.GetKeyDown (KeyCode.Space)) {
foreach (Transform child in gameObject.transform) {
GameObject.Destroy (child.gameObject);
}
for (int i = 0; i < randNumber; i++) {
int posX = Random.Range (terrainPosX, terrainPosX + terrainWidth);
int posZ = Random.Range (terrainPosZ, terrainPosZ + terrainLength);
float posY = Terrain.activeTerrain.SampleHeight (new Vector3 (posX, 0, posZ));
GameObject newTree = (GameObject)Instantiate (Tree, new Vector3 (posX,posY,posZ), Quaternion.identity);
newTree.transform.parent = transform;
}
}
}
}
Dont have time to read you script but if they spawn inside the terrain, then you could do a sampleheight at the tree position and assign the y value to the terrain height
