Question

我正在尝试在Unity中编写一个脚本，它在玩家直接面对的对象周围创建一种径向菜单，但菜单中的按钮数量是一个变量。

我已经生成了主菜单的角度，对象应该很容易出现......

            // int buttonCount = number of buttons
            float buttonWidth = 360 / buttonCount;
            for (int i = 1; i <= buttonCount; i++)
            {
                float maxAngle = buttonWidth * i;
                float minAngle;
                if (i == 0)
                {
                    minAngle = 0f;
                }
                else if (i == buttonCount)
                {
                    minAngle = 360 - buttonWidth;
                }
                else
                {
                    minAngle = buttonWidth * (i - 1);
                }
                float buttonAngle = (minAngle + maxAngle) / 2;
            }

...但现在我正试图将按钮对象放在中央菜单对象周围的相应角度，我不知道怎么办？

Answer 1

此功能将按钮所需的对象作为参数，播放器游戏对象，以便您可以将新按钮定向到播放器，按钮所需的角度以及半径（按钮的距离）将来自buttonCenter）。它的输出是世界空间中的按钮位置。您可以为要添加的每个按钮调用它。

Vector3 positionButton(GameObject buttonCenter, GameObject player, float angle, float radius) {
    //get the up and right vectors from the player object so we can orient the buttons
    Vector3 up = player.transform.up;
    Vector3 right = player.transform.right;

    angle = Mathf.Deg2Rad * angle;  //convert degrees to radians.  radians=degrees * 2pi / 360

    //cos(angle) give an x coordinate, on a unit circle centered around 0
    //sin(angle) is the y coordinate on the unit circle
    //take those values, multiply them by the up and right vectors to orient them to the player, 
    //multiply by the radius to move them the correct distance from the buttoncenter, 
    //and add the buttoncenter position so they circle around the correct point
    Vector3 buttonPos =buttonCenter.transform.position +  (radius * right * Mathf.Cos(angle)) + (radius* up * Mathf.Sin(angle));
    return buttonPos;
}

Answer 2

首先，为每个按钮定义原点和距离。当你有角度时，你可以应用三角学，它可以让你找到给定角度，距离和原点的点的坐标。该点将由角度的cos（）和sin（）定义。

Have a look at the 2nd section here

如何在Unity中以“径向风格”排列定位对象？

2 个答案: