Question

我有一个齿轮，用户可以转动旋转吊桥。目前，齿轮和吊桥以相同的速度旋转，就像这样：https://gyazo.com/14426947599095c30ace94a046e9ca21

这是我当前的代码：

[SerializeField] private Rigidbody2D thingToRotate;
    void OnMouseDrag()
    {
        Vector3 mousePosition = Input.mousePosition;
        mousePosition = Camera.main.ScreenToWorldPoint(mousePosition);

        Vector2 direction = new Vector2(
            mousePosition.x - transform.position.x,
            mousePosition.y - transform.position.y
         );

        transform.right = direction;
        thingToRotate.transform.up = transform.right;

    }

我想要这样，以便当用户转动齿轮时，它只会稍微旋转一下对象，因此用户可以在吊桥关闭之前将齿轮转动几次。

我尝试增加吊桥的欧拉角。我尝试将吊桥旋转设置为齿轮旋转，然后将该旋转除以2。

Answer 1

不要设置固定方向，而是使用正确的方法。

Mathf.SignedAngle来确定当前transform.right与direction
如果使用RigidBody2D，请使用Rigidbody2D.MoveRotation，而不要通过Transform组件设置旋转角度。

然后我将存储totalAngle，以便对其进行轮换，例如完成足够的轮播后，调用一些事件。

您仅将thingToRotate旋转到totalAngle / factor。

// Adjust in the Inspector how often the cog thing has to be turned
// in order to make the thingToRotate perform a full 360° rotation
public float factor = 5f;

private float totalAngle = 0f;

[SerializeField] private Rigidbody2D thingToRotate;
private void OnMouseDrag()
{
    var mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);

    // this is shorter ;)
    Vector2 direction = (mousePosition - transform.position).normalized;

    // get the angle difference you will move
    var angle = Vector2.SignedAngle(transform.right, direction);

    // rotate yourselve correctly
    transform.Rotate(Vector3.forward * angle);

    // add the rotated amount to the totalangle
    totalAngle += angle;

    // for rigidBodies rather use MoveRotation instead of setting values through
    // the Transform component
    thingToRotate.MoveRotation(totalAngle / factor);
}

如何使一个对象基于另一个对象旋转？

1 个答案: