Version: 2017.1

Collision2D.relativeVelocity

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public Vector2 relativeVelocity ;

描述

这两个碰撞对象的相对线性速度(只读)。

// Play a sound when we hit an object with a big velocity
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { AudioSource audioSource;

void Start() { audioSource = GetComponent<AudioSource>(); }

void OnCollisionEnter2D(Collision2D collision) { if (collision.relativeVelocity.magnitude > 2) audioSource.Play(); } }