Question

我的错误是

＆＃39; UnityEngine.Collider2D＆＃39;是一种＆＃39;类型＆＃39;但用作变量＆＃39;
最佳重载方法匹配＆＃39; UnityEngine.Vector3.Vector3（浮点数，浮点数，浮点数）＆＃39;有一些无效的论点

参数＆＃39; 1＆＃39;：无法转换为＆＃39; double＆＃39;到＆＃39;漂浮＆＃39;

using UnityEngine;
using System.Collections; 

public class MoveRacket : MonoBehaviour {
    public float speed = 30;
    public string axis = "Vertical";
    public object racket = "Racket";
    public bool touchInput = true;
    public Vector2 touchPos;





    void FixedUpdate () {

        //used to not have anything in parentheses
        //float v = Input.GetAxisRaw (axis);
        float v = Input.GetAxisRaw (axis);
        GetComponent<Rigidbody2D> ().velocity = new Vector2 (0, v) * speed;
        if (Input.touchCount == 1)
        {
            Vector3 wp = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
            Vector2 touchPos = new Vector2(wp.x, wp.y);
            if (Touch = Physics2D.OverlapPoint(touchPos))
            {
                this.transform.position =  new Vector3 (3.94,wp.y,0);

        }
        }
    }
}

Answer 1

这里有2个问题。第一个是你试图将Physics2D.OverlapPoint（touchPos）的Collider2D结果分配给Touch的统一结构类型。不太确定你的意图在这里。如果您只想测试touchPos是否重叠，请使用以下代码：

public class MoveRacket : MonoBehaviour {
public float speed = 30;
public string axis = "Vertical";
public object racket = "Racket";
public bool touchInput = true;
public Vector2 touchPos;





void FixedUpdate () {

    //used to not have anything in parentheses
    //float v = Input.GetAxisRaw (axis);
    float v = Input.GetAxisRaw (axis);
    GetComponent<Rigidbody2D> ().velocity = new Vector2 (0, v) * speed;
    if (Input.touchCount == 1)
    {
        Vector3 wp = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
        Vector2 touchPos = new Vector2(wp.x, wp.y);
        if (Physics2D.OverlapPoint(touchPos) != null)
        {
            this.transform.position =  new Vector3 (3.94f,wp.y,0);

    }
    }
}
}

你的另一个问题是，当vector3构造函数需要float时，3.94的值被视为double数据类型。要将其解释为浮点数，请添加＆＃34; f＆＃34;到数字的末尾。

改变unity3d运动到拖动时的错误（c＃）

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