根据forward旋转位置答案

【问题标题】：Rotate a position according to forward根据forward旋转位置
【发布时间】：2019-02-22 22:33:05
【问题描述】：

我目前正在制作一个攀爬检测系统，它可以跟随玩家并检测玩家可以攀爬的最近点。我有一个根据玩家位置投射光线的游戏对象。光线随玩家移动，但不旋转。如何让它们随播放器旋转？

这是绘制光线的代码

void Update()
{
    //Debug.DrawRay();
    raySpace = surfaceWidth / definition;
    raySpaceDividedByTwo = raySpace / 2;
    surfaceWidthDividedByTwo = surfaceWidth / 2;

    for (int i = 0; i < definition; i++)
    {
        for (int y = 0; y < definition; y++)
        {
            raycastCoordinates = new Vector3(
                (this.transform.position.x + (i * raySpace) + raySpaceDividedByTwo) - surfaceWidthDividedByTwo,
                 this.transform.position.y,
                (this.transform.position.z + (y * raySpace) + raySpaceDividedByTwo) - surfaceWidthDividedByTwo);

            //offset = Quaternion.AngleAxis(Input.GetAxis("Mouse X") * turnSpeed, Vector3.up) * offset;
            //raycastCoordinates = Quaternion.AngleAxis(this.transform.rotation.y, Vector3.up) * raycastCoordinates;

            raycastUpHitsList.Add(Physics.RaycastAll(raycastCoordinates, Vector3.up, detectionHeight, LayerMask.GetMask("Water")));
            Debug.DrawRay(raycastCoordinates, Vector3.up * detectionHeight, Color.green, 0.1f);
        }
    }
}

【问题讨论】：

标签： unity3d rotation raycasting

【解决方案1】：

这应该可行：

void Update()
{
    //Debug.DrawRay();
    raySpace = surfaceWidth / definition;
    raySpaceDividedByTwo = raySpace / 2;
    surfaceWidthDividedByTwo = surfaceWidth / 2;

    for (int i = 0; i < definition; i++)
    {
        for (int y = 0; y < definition; y++)
        {
            raycastCoordinates = new Vector3(
                (this.transform.position.x + (i * raySpace) + raySpaceDividedByTwo) - surfaceWidthDividedByTwo,
                 this.transform.position.y,
                (this.transform.position.z + (y * raySpace) + raySpaceDividedByTwo) - surfaceWidthDividedByTwo) * transform.forward;//if this doesn't work, try transform.right instead

            //offset = Quaternion.AngleAxis(Input.GetAxis("Mouse X") * turnSpeed, Vector3.up) * offset;
            //raycastCoordinates = Quaternion.AngleAxis(this.transform.rotation.y, Vector3.up) * raycastCoordinates;

            raycastUpHitsList.Add(Physics.RaycastAll(raycastCoordinates, Vector3.up, detectionHeight, LayerMask.GetMask("Water")));
            Debug.DrawRay(raycastCoordinates, Vector3.up * detectionHeight, Color.green, 0.1f);
        }
    }
}

【讨论】：