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68 lines
2.8 KiB
68 lines
2.8 KiB
using System;
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using UnityEngine;
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namespace UnityStandardAssets.Effects
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{
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[RequireComponent(typeof (SphereCollider))]
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public class AfterburnerPhysicsForce : MonoBehaviour
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{
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public float effectAngle = 15;
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public float effectWidth = 1;
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public float effectDistance = 10;
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public float force = 10;
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private Collider[] m_Cols;
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private SphereCollider m_Sphere;
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private void OnEnable()
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{
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m_Sphere = (GetComponent<Collider>() as SphereCollider);
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}
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private void FixedUpdate()
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{
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m_Cols = Physics.OverlapSphere(transform.position + m_Sphere.center, m_Sphere.radius);
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for (int n = 0; n < m_Cols.Length; ++n)
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{
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if (m_Cols[n].attachedRigidbody != null)
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{
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Vector3 localPos = transform.InverseTransformPoint(m_Cols[n].transform.position);
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localPos = Vector3.MoveTowards(localPos, new Vector3(0, 0, localPos.z), effectWidth*0.5f);
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float angle = Mathf.Abs(Mathf.Atan2(localPos.x, localPos.z)*Mathf.Rad2Deg);
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float falloff = Mathf.InverseLerp(effectDistance, 0, localPos.magnitude);
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falloff *= Mathf.InverseLerp(effectAngle, 0, angle);
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Vector3 delta = m_Cols[n].transform.position - transform.position;
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m_Cols[n].attachedRigidbody.AddForceAtPosition(delta.normalized*force*falloff,
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Vector3.Lerp(m_Cols[n].transform.position,
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transform.TransformPoint(0, 0, localPos.z),
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0.1f));
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}
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}
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}
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private void OnDrawGizmosSelected()
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{
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//check for editor time simulation to avoid null ref
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if(m_Sphere == null)
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m_Sphere = (GetComponent<Collider>() as SphereCollider);
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m_Sphere.radius = effectDistance*.5f;
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m_Sphere.center = new Vector3(0, 0, effectDistance*.5f);
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var directions = new Vector3[] {Vector3.up, -Vector3.up, Vector3.right, -Vector3.right};
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var perpDirections = new Vector3[] {-Vector3.right, Vector3.right, Vector3.up, -Vector3.up};
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Gizmos.color = new Color(0, 1, 0, 0.5f);
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for (int n = 0; n < 4; ++n)
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{
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Vector3 origin = transform.position + transform.rotation*directions[n]*effectWidth*0.5f;
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Vector3 direction =
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transform.TransformDirection(Quaternion.AngleAxis(effectAngle, perpDirections[n])*Vector3.forward);
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Gizmos.DrawLine(origin, origin + direction*m_Sphere.radius*2);
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}
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}
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}
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}
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