RequireComponent
The RequireComponent attribute automatically adds required components as dependencies.
読み終わるまでの所要時間 4 分最終更新 1ヶ月前
Definition
- Type: Class
- Namespace: UnityEngine
- Assembly: UnityEngine.CoreModule
- Inherits from: Attribute
[AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]public sealed class RequireComponent : Attribute
Remarks
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.
Examples
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); }}
Constructors
Constructor | Description |
|---|---|
| RequireComponent(System.Type) | Require a single component. |
| RequireComponent(System.Type,System.Type) | Require two components. |
| RequireComponent(System.Type,System.Type,System.Type) | Require three components. |