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[英]Attribute 'XmlElement' is not valid on this declaration type. It is only valid on 'property, indexer, field, param, return' declarations
[英]The attribute UnityEngine.RequireComponent is not valid on this declaration type. It is valid on class declarations only
我正在嘗試使用 Unity2D 編寫我的第一個游戲“Tappy Bird”。 當我嘗試運行該應用程序時,我在 Unity 中收到以下錯誤消息:
Assets/scripts/TapController.cs(6,6):錯誤 CS0592:屬性 UnityEngine.RequireComponent 在此聲明類型上無效。 它僅對類聲明有效
代碼:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class NewBehaviourScript : MonoBehaviour
{
[RequireComponent(typeof(Rigidbody2D))]
public float tapForce = 10;
public float tiltSmooth = 5;
public Vector3 startPos;
Rigidbody2D rigidbody;
Quaternion downRotation;
Quaternion forwardRotation;
void Start()
{
rigidbody = GetComponent<Rigidbody2D();
downRotation = Quaternion.Euler(0, 0, -90);
forwardRotation = Quaternion.Euler(0, 0, 35);
}
void update()
{
if (input.GetMouseButtonDown(0))
{
transform.rotation = forwardRotation;
rigidbody.AddForce(vector2.up * tapForce, ForceMode2D.Force);
}
transform.rotation = Quaternion.Lerp(
transform.rotation, downRotation, tiltSmooth * Time.deltaTime);
}
void onTriggerEnter2D(Collider2D col){
if(col.gameObject.tag == "ScoreZone") {
//register a Score event
//play sound
}
if(col.gmeObject.tag == "DeadZone") {
//register a dead event
//play a sound
}
}
}
如果我理解你的代碼正確,你應該在類聲明之前添加屬性:
[RequireComponent(typeof(Rigidbody2D))]
public class NewBehaviourScript : MonoBehaviour
{
...
}
添加所需組件作為依賴項的 RequireComponent 屬性需要在您的類之外設置。
https://docs.unity3d.com/ScriptReference/RequireComponent.html
https://docs.unity3d.com/ScriptReference/RequireComponent.html
首先,它應該在類名的前面;
其次,如果您已將腳本附加到游戲對象,則需要再次重新附加。
[RequireComponent(typeof(Rigidbody2D))]
public class NewBehaviourScript : MonoBehaviour
{
//...
}
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