public Collider2D collider ;



如果命中的对象具有多个碰撞体,这可能会十分有用 - 此属性可以用于确定特定碰撞体而不仅仅是对象。

请注意,返回单个 RaycastHit2D 的某些函数会将碰撞体保留为 NULL,这指示未命中任何对象。RaycastHit2D 实现了一个转换为 bool 的隐式转换运算符,检查此属性时,将其用于确定是否发生命中的简单条件检查。

using UnityEngine;
using System.Collections;

//Attach this script to an empty gameobject. //When you click on a sprite with a collider it will tell you it's name. public class ExampleClass : MonoBehaviour { void Update() { //If the left mouse button is clicked. if (Input.GetMouseButtonDown(0)) { //Get the mouse position on the screen and send a raycast into the game world from that position. Vector2 worldPoint = Camera.main.ScreenToWorldPoint(Input.mousePosition); RaycastHit2D hit = Physics2D.Raycast(worldPoint,;

//If something was hit, the RaycastHit2D.collider will not be null. if (hit.collider != null) { Debug.Log(; } } } }