Skip to content

Instantly share code, notes, and snippets.

@fand fand/Replicator.cs
Created Apr 11, 2019

Embed
What would you like to do?
Unity object replicator like blender's array modifier
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
[ExecuteInEditMode]
public class Replicator : MonoBehaviour
{
[SerializeField] Transform _prefab;
[SerializeField, Range(1, 300)] int _count = 1;
[SerializeField] Vector3 _translate = Vector3.zero;
[SerializeField] Vector3 _rotation = Vector3.zero;
[SerializeField] Vector3 _scale = Vector3.one;
[SerializeField] Vector3 _randomizeTranslateFactor = Vector3.zero;
[SerializeField] Vector3 _randomizeRotationFactor = Vector3.zero;
[SerializeField] Vector3 _randomizeScaleFactor = Vector3.zero;
Transform _transform;
void Start()
{
_transform = transform;
UnityEditor.EditorApplication.delayCall += Reset;
}
void Destroy()
{
UnityEditor.EditorApplication.delayCall += Reset;
}
void OnValidate()
{
_transform = transform;
UnityEditor.EditorApplication.delayCall += Reset;
}
void Reset()
{
UnityEditor.EditorApplication.delayCall -= Reset;
if (_prefab == null) {
Debug.LogError("prefab is null");
}
// Get children to remove
var objToRemove = new List<GameObject>();
foreach (Transform child in _transform) {
objToRemove.Add(child.gameObject);
}
// Create children
var pos = Vector3.zero;
var rot = Quaternion.identity;
var scale = Vector3.one;
for (int i = 0; i < _count; i++)
{
var obj = Instantiate(_prefab, pos, rot, _transform);
obj.localScale = scale;
pos += _translate + Vector3.Scale(Random.insideUnitSphere, _randomizeTranslateFactor);
rot = rot * Quaternion.Euler(_rotation + Vector3.Scale(Random.rotation.eulerAngles, _randomizeRotationFactor));
scale = Vector3.Scale(scale, _scale) + Vector3.Scale(Random.insideUnitSphere, _randomizeScaleFactor);
}
// Remove old children
foreach (var obj in objToRemove) {
DestroyImmediate(obj);
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.