Unity在屏幕边界追踪目标提示

最新推荐文章于 2023-03-14 14:34:51 发布

原创最新推荐文章于 2023-03-14 14:34:51 发布 · 3.1k 阅读

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本文介绍了一种在游戏开发中实现玩家追踪标记的方法。通过计算玩家与目标位置之间的相对坐标，利用Unity引擎的数学工具计算箭头指示方向，并确定其在屏幕上的位置，确保追踪标记始终出现在屏幕边界上。

    void SetOthersAt(Vector3 playerPosition,Vector3 otherPosition,GameObject showUI)
    {
        //计算方向
        Vector3 CachePosion = new Vector3(otherPosition.x, 0, otherPosition.z) - new Vector3(playerPosition.x, 0, playerPosition.z);
        CachePosion = new Vector3(CachePosion.x, CachePosion.z, 0);

        //计算箭头指示方向
        float angleZ = Vector3.Angle(new Vector3(0, 1, 0), CachePosion);
        Vector3 angleNormal = Vector3.Cross(new Vector3(0, 1, 0), CachePosion);
        angleZ *= Mathf.Sign(Vector3.Dot(angleNormal, new Vector3(0, 0, 1)));


        showUI.transform.eulerAngles = new Vector3(0, 0, angleZ);
        //计算箭头在屏幕中的位置
        CachePosion = CachePosion.normalized * (Screen.width > Screen.height ? Screen.width -10: Screen.height-10);
        CachePosion.x = Mathf.Clamp(CachePosion.x, -Screen.width / 2 + 15, Screen.width / 2 - 15);
        CachePosion.y = Mathf.Clamp(CachePosion.y, -Screen.height / 2 + 15, Screen.height / 2 - 15);

        showUI.GetComponent<RectTransform>().anchoredPosition3D = CachePosion;


    }

如何在游戏中屏幕边界显示追踪标记