1 using System;
2 using UnityEngine;
3
4 namespace UnityStandardAssets.Effects
5 {
6 [RequireComponent(typeof (SphereCollider))]
7 public class AfterburnerPhysicsForce : MonoBehaviour
8 {
9 public float effectAngle = 15;
10 public float effectWidth = 1;
11 public float effectDistance = 10;
12 public float force = 10;
13
14 private Collider[] m_Cols;
15 private SphereCollider m_Sphere;
16
17
18 private void OnEnable()
19 {
20 m_Sphere = (GetComponent<Collider>() as SphereCollider);
21 }
22
23
24 private void FixedUpdate()
25 {
26 m_Cols = Physics.OverlapSphere(transform.position + m_Sphere.center, m_Sphere.radius);
27 for (int n = 0; n < m_Cols.Length; ++n)
28 {
29 if (m_Cols[n].attachedRigidbody != null)
30 {
31 Vector3 localPos = transform.InverseTransformPoint(m_Cols[n].transform.position);
32 localPos = Vector3.MoveTowards(localPos, new Vector3(0, 0, localPos.z), effectWidth*0.5f);
33 float angle = Mathf.Abs(Mathf.Atan2(localPos.x, localPos.z)*Mathf.Rad2Deg);
34 float falloff = Mathf.InverseLerp(effectDistance, 0, localPos.magnitude);
35 falloff *= Mathf.InverseLerp(effectAngle, 0, angle);
36 Vector3 delta = m_Cols[n].transform.position - transform.position;
37 m_Cols[n].attachedRigidbody.AddForceAtPosition(delta.normalized*force*falloff,
38 Vector3.Lerp(m_Cols[n].transform.position,
39 transform.TransformPoint(0, 0, localPos.z),
40 0.1f));
41 }
42 }
43 }
44
45
46 private void OnDrawGizmosSelected()
47 {
48 //check for editor time simulation to avoid null ref
49 if(m_Sphere == null)
50 m_Sphere = (GetComponent<Collider>() as SphereCollider);
51
52 m_Sphere.radius = effectDistance*.5f;
53 m_Sphere.center = new Vector3(0, 0, effectDistance*.5f);
54 var directions = new Vector3[] {Vector3.up, -Vector3.up, Vector3.right, -Vector3.right};
55 var perpDirections = new Vector3[] {-Vector3.right, Vector3.right, Vector3.up, -Vector3.up};
56 Gizmos.color = new Color(0, 1, 0, 0.5f);
57 for (int n = 0; n < 4; ++n)
58 {
59 Vector3 origin = transform.position + transform.rotation*directions[n]*effectWidth*0.5f;
60
61 Vector3 direction =
62 transform.TransformDirection(Quaternion.AngleAxis(effectAngle, perpDirections[n])*Vector3.forward);
63
64 Gizmos.DrawLine(origin, origin + direction*m_Sphere.radius*2);
65 }
66 }
67 }
68 }
