Collider.OnCollisionEnter(Collision)

Description

このcollider/rigidbodyは他のcollider/rigidbodyに触れた時にOnCollisionEnterは呼び出されます。

OnTriggerEnterとは対照的にOnCollisionEnterはコライダーではなく、Collisionが渡されます。 Collisionには接触点、衝突した速度などの情報が含まれています。 この関数のcollisionInfoを使用しない場合はcollisionInfoパラメーターを省略することで無駄な計算を回避することが出来ます。 複数あるコライダーのうち1つにKinematicではないRigidbodyがアタッチされている場合、衝突イベントはそのコライダーのみに送信されることに注意してください。

	function OnCollisionEnter(collision : Collision) {
		// Debug-draw all contact points and normals
		for (var contact : ContactPoint in collision.contacts) {
			Debug.DrawRay(contact.point, contact.normal, Color.white);
		}
		
		// Play a sound if the coliding objects had a big impact.		
		if (collision.relativeVelocity.magnitude > 2)
			audio.Play();
	}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void OnCollisionEnter(Collision collision) {
        foreach (ContactPoint contact in collision.contacts) {
            Debug.DrawRay(contact.point, contact.normal, Color.white);
        }
        if (collision.relativeVelocity.magnitude > 2)
            audio.Play();
        
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def OnCollisionEnter(collision as Collision) as void:
		for contact as ContactPoint in collision.contacts:
			Debug.DrawRay(contact.point, contact.normal, Color.white)
		if collision.relativeVelocity.magnitude > 2:
			audio.Play()

他の例：

	// A grenade
	// - instantiates a explosion prefab when hitting a surface
	// - then destroys itself

	var explosionPrefab : Transform;

	function OnCollisionEnter(collision : Collision) {
		// Rotate the object so that the y-axis faces along the normal of the surface
		var contact : ContactPoint = collision.contacts[0];
		var rot : Quaternion = Quaternion.FromToRotation(Vector3.up, contact.normal);
		var pos : Vector3 = contact.point;
		Instantiate(explosionPrefab, pos, rot);
		// Destroy the projectile
		Destroy (gameObject);
	}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public Transform explosionPrefab;
    void OnCollisionEnter(Collision collision) {
        ContactPoint contact = collision.contacts[0];
        Quaternion rot = Quaternion.FromToRotation(Vector3.up, contact.normal);
        Vector3 pos = contact.point;
        Instantiate(explosionPrefab, pos, rot) as Transform;
        Destroy(gameObject);
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	public explosionPrefab as Transform

	def OnCollisionEnter(collision as Collision) as void:
		contact as ContactPoint = collision.contacts[0]
		rot as Quaternion = Quaternion.FromToRotation(Vector3.up, contact.normal)
		pos as Vector3 = contact.point
		(Instantiate(explosionPrefab, pos, rot) as Transform)
		Destroy(gameObject)