将unity3d移动更改为拖动时出错(c#)

Question

我的错误是

• 'UnityEngine.Collider2D‘是'type’，但使用起来像‘变量’
• 最佳重载方法匹配“UnityEngine.Vector3.Vector3(浮点、浮点、浮点数)”有一些无效的参数
• 参数“1”：不能从“双”转换为“浮动” 使用UnityEngine；使用System.Collections；公共类MoveRacket : MonoBehaviour {公共浮动速度= 30；公共字符串轴=“垂直”；公共对象球拍=“球拍”；公共bool touchInput = true；public Vector2 touchPos；FixedUpdate () {//用于括号内没有任何东西//浮点数v= Input.GetAxisRaw (轴)；浮点数v= Input.GetAxisRaw (轴)；GetComponent ().velocity =新的Vector2 (0，v) *速度；if (Input.touchCount == 1) { Vector3 wp =Vector3 Vector2 touchPos =新Vector2(wp.x，wp.y)；if (Touch = Physics2D.OverlapPoint(touchPos)) { this.transform.position =新Vector3 (3.94，wp.y,0)；}

Answer 1

你这里有两个问题。首先，您试图将Collider2D结果Physics2D.OverlapPoint(touchPos)分配给Touch的统一结构类型。不太清楚你的意图是什么。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);

    }
    }
}
}

另一个问题是，当vector3构造函数期望浮动时，值3.94被视为一个双数据类型。若要将其解释为浮点数，请在数字的末尾添加"f“。