无法将类型“unityengine.vector3”隐式转换为“float”

Posted 2023-04-12

【中文标题】无法将类型“unityengine.vector3”隐式转换为“float”

【英文标题】：Cannot implicitly convert type 'unityengine.vector3' to 'float'

【发布时间】：2022-01-15 14:58:39

【问题描述】：

我有一些代码跟随相机，我的错误是：

Assets/Scripts/CameraFollow.cs(15,46)：错误 CS0029：无法将 UnityEngine.Vector3' 类型隐式转换为 float'

Assets/Scripts/CameraFollow.cs(25,58)：错误 CS0103：名称“camWidth”在当前上下文中不存在

这是我的代码：

using System.Collections;
using System.Collections.Generic
using UnityEngine;

public class CameraFollow : MonoBehaviour 

    public Transform target;
    public Transform leftBounds;
    public Transform rightBounds;

    public float smoothDampTime = 0.15f;
    private  float smoothDampVelocity = Vector3.zero;

    private float camHeight, camWidht, levelMinX, levelMaxX;

    // Use this for initialization
    void Start () 
        
        camHeight = Camera.main.orthographicSize * 2;   
        camWidht = camHeight * Camera.main.aspect;

        float leftBoundsWidth = leftBounds.GetComponentInChildren<SpriteRenderer> ().bounds.size.x / 2;
        float rightBoundsWidth = rightBounds.GetComponentInChildren<SpriteRenderer> ().bounds.size.x / 2;

        levelMinX = leftBounds.position.x + leftBoundsWidth + (camWidth/2);
        levelMaxX = rightBounds.position.x - rightBoundsWidth - (camWidth/2);
    
    
    // Update is called once per frame
    void Update () 

        if (target)

            float targetX = Mathf.Max (levelMinX, Mathf.Min (levelMaxX, target.position.x));

            float x = Mathf.SmoothDamp(transform.position.x, targetX, ref smoothDampVelocity, smoothDampTime);
            
            transform.position = new Vector3(x, transform.position.y, transform.position.z);
        
    

【问题讨论】：

camWidht 中有一个类型！= camWidth 是的，float smoothDampVelocity = Vector3.zero; 没有多大意义......应该只是 0 （或者什么都没有，因为那是无论如何都是默认值）

请澄清您的具体问题或提供其他详细信息以准确突出您的需求。正如目前所写的那样，很难准确地说出你在问什么。

【参考方案1】：

根据文档Vector3.Zero 是写Vector3(0, 0, 0) 的简写。并且不是float 类型。您需要相应地使用数据类型，例如transform.position