111 lines
3.8 KiB
C#
111 lines
3.8 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace MeshCombineStudio
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{
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[ExecuteInEditMode]
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public class ObjectSpawner : MonoBehaviour
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{
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public GameObject[] objects;
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public float density = 0.5f;
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public Vector2 scaleRange = new Vector2(0.5f, 2f);
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public Vector3 rotationRange = new Vector3(5, 360, 5);
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public Vector2 heightRange = new Vector2(0, 1);
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public float scaleMulti = 1;
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public float resolutionPerMeter = 2;
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public bool spawnInRuntime;
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public bool spawn;
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public bool deleteChildren;
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Transform t;
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private void Awake()
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{
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t = transform;
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if (spawnInRuntime && Application.isPlaying)
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{
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Spawn();
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}
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}
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private void Update()
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{
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if (spawn)
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{
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spawn = false;
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Spawn();
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}
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if (deleteChildren)
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{
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deleteChildren = false;
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DeleteChildren();
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}
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}
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public void DeleteChildren()
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{
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Transform[] transforms = GetComponentsInChildren<Transform>();
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for (int i = 0; i < transforms.Length; i++)
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{
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if (t != transforms[i] && transforms[i] != null) DestroyImmediate(transforms[i].gameObject);
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}
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}
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public void Spawn()
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{
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Bounds bounds = new Bounds();
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bounds.center = transform.position;
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bounds.size = transform.lossyScale;
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float xStart = bounds.min.x;
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float xEnd = bounds.max.x;
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float yStart = bounds.min.y;
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float yEnd = bounds.max.y;
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float zStart = bounds.min.z;
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float zEnd = bounds.max.z;
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int objectCount = objects.Length;
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float halfRes = resolutionPerMeter * 0.5f;
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float heightOffset = transform.lossyScale.y * 0.5f;
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int count = 0;
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for (float z = zStart; z < zEnd; z += resolutionPerMeter)
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{
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for (float x = xStart; x < xEnd; x += resolutionPerMeter)
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{
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for (float y = yStart; y < yEnd; y += resolutionPerMeter)
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{
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int index = Random.Range(0, objectCount);
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float spawnValue = Random.value;
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if (spawnValue < density)
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{
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Vector3 pos = new Vector3(x + Random.Range(-halfRes, halfRes), yStart + (Random.Range(0, bounds.size.y) * Random.Range(heightRange.x, heightRange.y)), z + Random.Range(-halfRes, halfRes));
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if (pos.x < xStart || pos.x > xEnd || pos.y < yStart || pos.y > yEnd || pos.z < zStart || pos.z > zEnd) continue;
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pos.y += heightOffset;
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Vector3 eulerAngles = new Vector3(Random.Range(0, rotationRange.x), Random.Range(0, rotationRange.y), Random.Range(0, rotationRange.z));
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GameObject go = (GameObject)Instantiate(objects[index], pos, Quaternion.Euler(eulerAngles));
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float scale = Random.Range(scaleRange.x, scaleRange.y) * scaleMulti;
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go.transform.localScale = new Vector3(scale, scale, scale);
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go.transform.parent = t;
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++count;
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}
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}
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}
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}
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Debug.Log("Spawned " + count);
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}
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private void OnDrawGizmosSelected()
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{
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Gizmos.DrawWireCube(transform.position + new Vector3(0, transform.lossyScale.y * 0.5f, 0), transform.lossyScale);
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}
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}
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} |