Unity技能伤害区域判定（矩形，圆，三角形，扇形）（三）

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 源码地址：https://download.csdn.net/download/qq_37310110/10886004

一. 判断目标点是否在指定的扇形内

 

 public GameObject target;
    private float skillDistance = 5;
    private float skillAngle = 60;

    // Update is called once per frame
    void Update()
    {
        float distance = Vector3.Distance(transform.position, target.transform. position);
        Vector3 norVec =  transform.localPosition+new Vector3(0,0, skillDistance);
        Vector3 temVec = target.transform.position - transform.position;

        Debug.DrawLine(transform.position, norVec, Color.red);
        Debug.DrawLine(transform.position, target.transform.position, Color.green);

        if (Input.GetKeyDown(KeyCode.Q))
        {
            //计算两个向量间的夹角
            float angle = Mathf.Acos(Vector3.Dot(norVec.normalized, temVec.normalized)) * Mathf.Rad2Deg;
            if (distance <= skillDistance && angle * 2 <= skillAngle)
            {
                Debug.Log("在扇形范围内");
            }
            else
            {
                Debug.Log("不在扇形范围内");
            }
        }
    }

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