Version: 2021.2

RequireComponent

class in UnityEngine

切换到手册

描述

RequireComponent 属性自动将所需的组件添加为依赖项。

When you add a script which uses RequireComponent to a GameObject, the required component is automatically added to the GameObject. This is useful to avoid setup errors. For example a script might require that a Rigidbody is always added to the same GameObject. When you use RequireComponent, this is done automatically, so you are unlikely to get the setup wrong.

Note: RequireComponent only checks for missing dependencies when GameObject.AddComponent is called. This happens both in the Editor, or at runtime. Unity does not automatically add any missing dependences to the components with GameObjects that lack the new dependencies.

using UnityEngine;

// PlayerScript requires the GameObject to have a Rigidbody component [RequireComponent(typeof(Rigidbody))] public class PlayerScript : MonoBehaviour { Rigidbody rb;

void Start() { rb = GetComponent<Rigidbody>(); }

void FixedUpdate() { rb.AddForce(Vector3.up); } }

构造函数

RequireComponent需要一个组件。
Copyright © 2023 Unity Technologies
优美缔软件(上海)有限公司 版权所有
"Unity"、Unity 徽标及其他 Unity 商标是 Unity Technologies 或其附属机构在美国及其他地区的商标或注册商标。其他名称或品牌是其各自所有者的商标。
公安部备案号:
31010902002961