Unity中添加组件的几种方法

- 日理万妓 2022-09-23 10:57 291阅读 0赞

一、在编辑器上面添加一个组件。这个不用多说。

二、在脚本中利用AddComponent函数添加一个组件，例如：

using UnityEngine; 
using System.Collections; 
 
public class CharacterSpawner : MonoBehaviour \{ 
 
    public void Spawn(GameObject CharacterSlected)\{ 
        if(CharacterSlected)\{ 
            GameObject player = (GameObject)GameObject.Instantiate(CharacterSlected,this.transform.position,Quaternion.identity); 
            if(!player.GetComponent<PlayerManager>())\{ 
                player.AddComponent<PlayerManager>(); 
            \} 
        \} 
    \} 
\}

AddComponent的官方说明：

***[GameObject][].AddComponent***

*[Component ][Component]**AddComponent**(string **className**);*

*Description*

*Adds a component class named `className` to the game object.*

*Use this function to change behaviour of objects on the fly. You can also add script to game objects by passing in the name of the script class.*

*Some components require other components to exist in the same game object as well. This function automatically adds any required components as well eg. if you add a [HingeJoint][] this will automatically add a [Rigidbody][] as well.*

using UnityEngine;
    using System.Collections;
    
    public class Example : MonoBehaviour {
        public SphereCollider sc;
        void Example() {
            gameObject.AddComponent("FoobarScript");
            sc = gameObject.AddComponent("SphereCollider") as SphereCollider;
        }
    }

*[Component ][Component]**AddComponent**(Type **componentType**);*

*Description*

*Adds a component class of type `componentType` to the game object. C\# Users can use a generic version.*

no example available in C#

*Note that there is no RemoveComponent(), to remove a component, use Object.Destroy.*

三、利用RequireComponent添加一个组件。

using UnityEngine;  
using System.Collections;  
\[RequireComponent(typeof(PlayerCharacterController))\]  
\[RequireComponent(typeof(PlayerCharacterUI))\]  
\[RequireComponent(typeof(PlayerQuestManager))\]  
\[RequireComponent(typeof(PlayerSave))\]  
  
public class PlayerManager : MonoBehaviour \{

RequireComponent意思是表面这个类一定需要哪些组件，如果目前这些组件没有被加上，就自动加上。

官方解释：

***RequireComponent****Namespace: UnityEngine*

*Description*

*The RequireComponent attribute lets automatically add required component as a dependency.*

*When you add a script which uses RequireComponent, the required component will automatically be added to the game object. This is useful to avoid setup errors. For example a script might require that a rigid body is always added to the same game object. Using RequireComponent this will be done automatically, thus you can never get the setup wrong.*

// Mark the PlayerScript as requiring a rigidbody in the game object.
 @script <a target=_blank target="_blank" href="http://blog.csdn.net/monzart7an/article/details/RequireComponent.html" style="color: rgb(20, 93, 123); text-decoration: none;">RequireComponent</a>(<a target=_blank target="_blank" href="http://blog.csdn.net/monzart7an/article/details/Rigidbody.html" style="color: rgb(20, 93, 123); text-decoration: none;">Rigidbody</a>)function FixedUpdate() {
 	rigidbody.AddForce(<a target=_blank target="_blank" href="http://blog.csdn.net/monzart7an/article/details/Vector3-up.html" style="color: rgb(20, 93, 123); text-decoration: none;">Vector3.up</a>);
 }

*C\# Example:*

[<a target=_blank target="_blank" href="http://blog.csdn.net/monzart7an/article/details/RequireComponent.html" style="color: rgb(20, 93, 123); text-decoration: none;">RequireComponent</a> (typeof (<a target=_blank target="_blank" href="http://blog.csdn.net/monzart7an/article/details/Rigidbody.html" style="color: rgb(20, 93, 123); text-decoration: none;">Rigidbody</a>))]
 public class PlayerScript : <a target=_blank target="_blank" href="http://blog.csdn.net/monzart7an/article/details/MonoBehaviour.html" style="color: rgb(20, 93, 123); text-decoration: none;">MonoBehaviour</a> {
 	void FixedUpdate() {
 		rigidbody.AddForce(<a target=_blank target="_blank" href="http://blog.csdn.net/monzart7an/article/details/Vector3-up.html" style="color: rgb(20, 93, 123); text-decoration: none;">Vector3.up</a>);
 	}
 }

[GameObject]: http://blog.csdn.net/monzart7an/article/details/GameObject.html
[Component]: http://blog.csdn.net/monzart7an/article/details/Component.html
[HingeJoint]: http://blog.csdn.net/monzart7an/article/details/HingeJoint.html
[Rigidbody]: http://blog.csdn.net/monzart7an/article/details/Rigidbody.html