1 using System;
2 using System.Collections;
3 using UnityEngine;
4 using Random = UnityEngine.Random;
5
6 namespace UnityStandardAssets.Effects
7 {
8 public class ExplosionFireAndDebris : MonoBehaviour
9 {
10 public Transform[] debrisPrefabs;
11 public Transform firePrefab;
12 public int numDebrisPieces = 0;
13 public int numFires = 0;
14
15
16 private IEnumerator Start()
17 {
18 float multiplier = GetComponent<ParticleSystemMultiplier>().multiplier;
19
20 for (int n = 0; n < numDebrisPieces*multiplier; ++n)
21 {
22 var prefab = debrisPrefabs[Random.Range(0, debrisPrefabs.Length)];
23 Vector3 pos = transform.position + Random.insideUnitSphere*3*multiplier;
24 Quaternion rot = Random.rotation;
25 Instantiate(prefab, pos, rot);
26 }
27
28 // wait one frame so these new objects can be picked up in the overlapsphere function
29 yield return null;
30
31 float r = 10*multiplier;
32 var cols = Physics.OverlapSphere(transform.position, r);
33 foreach (var col in cols)
34 {
35 if (numFires > 0)
36 {
37 RaycastHit fireHit;
38 Ray fireRay = new Ray(transform.position, col.transform.position - transform.position);
39 if (col.Raycast(fireRay, out fireHit, r))
40 {
41 AddFire(col.transform, fireHit.point, fireHit.normal);
42 numFires--;
43 }
44 }
45 }
46
47 float testR = 0;
48 while (numFires > 0 && testR < r)
49 {
50 RaycastHit fireHit;
51 Ray fireRay = new Ray(transform.position + Vector3.up, Random.onUnitSphere);
52 if (Physics.Raycast(fireRay, out fireHit, testR))
53 {
54 AddFire(null, fireHit.point, fireHit.normal);
55 numFires--;
56 }
57 testR += r*.1f;
58 }
59 }
60
61
62 private void AddFire(Transform t, Vector3 pos, Vector3 normal)
63 {
64 pos += normal*0.5f;
65 Transform fire = (Transform) Instantiate(firePrefab, pos, Quaternion.identity);
66 fire.parent = t;
67 }
68 }
69 }
