变换拖动移动答案

【问题标题】：Transform dragging on movement变换拖动移动
【发布时间】：2015-09-26 06:29:48
【问题描述】：

这就是视频形式的问题

https://pbs.twimg.com/tweet_video/CPsvjgbWoAACKCp.mp4

在不移动船的时候，盾牌可以左右移动，但是当你开始移动时，它只能在你身后拖动并移动一点，这根本没有好处。我无法弄清楚我在这里做错了什么！

public class ShieldMovement : MonoBehaviour {

public Transform target; //player shield is attaced to
public float circSpeed = 0.1f; // Speed Shield moves around ship

private Vector3 direction = Vector3.up;
private float distance = 0.8f; // distance from player so it doesn't clip
private float deadzone = 0.15f;
private float separation;
private bool canMove = true;

private Vector3 shipPos;

private Rigidbody2D tRB;
private Rigidbody2D rb;

// Use this for initialization
void Start () 
{
    tRB = target.GetComponent<Rigidbody2D>();
    rb = GetComponent<Rigidbody2D>();
}

void OnCollisionEnter2D (Collision2D other) 
{
    canMove = false;
}

void OnCollisionStay2d(Collision2D other)
{
    canMove = false;
}

void OnCollisionExit2D (Collision2D other) 
{
    canMove = true;
}

// Update is called once per frame
void Update () {

    float rh = Input.GetAxisRaw("rightH");
    float rv = Input.GetAxisRaw("rightV");

    shipPos = target.position;

    separation = Mathf.Abs((transform.position - shipPos).magnitude);

    if(Mathf.Abs(rh) > deadzone || Mathf.Abs(rv) > deadzone)
    {
        Vector3 targetDir = new Vector3(rh, rv, 0.0f);
        direction  = Vector3.Slerp(transform.position-shipPos, targetDir, circSpeed);

    }

    Ray ray = new Ray(shipPos, direction); // cast ray in direction of point on circle shield is to go

    if(canMove)
    {
        transform.position = ray.GetPoint(distance); //move shield to the ray as far as the distance
    }

    if(separation != distance) //If the shield get torn away from the ship
    {
        transform.position = ray.GetPoint(distance); //move shield to the ray as far as the distance
    }

    float angleY = transform.position.y - shipPos.y;
    float angleX = -(transform.position.x - shipPos.x);

    float angle = Mathf.Atan2 (angleY, angleX) * Mathf.Rad2Deg-90; //Get angle

    if(Mathf.Abs(rh) > deadzone || Mathf.Abs(rv) > deadzone)
    {
        transform.rotation = Quaternion.AngleAxis(angle,Vector3.forward*-1); // keep shield facing outwards in respect to player
    }


}

void FixedUpdate ()
{
    if(!canMove)
    {

        tRB.velocity = new Vector2(0.0f, 0.0f);
        rb.velocity = new Vector2(0.0f, 0.0f);

    }
}

感谢一百万的帮助:)

【问题讨论】：

看看RotateAround()函数，它可能更适合你的用途：docs.unity3d.com/ScriptReference/Transform.RotateAround.html
我试过 RotateAround() 但它似乎只在给定位置在自己的轴上旋转盾牌，我需要更改变换位置

标签： c# unity3d transform

【解决方案1】：

您需要将盾牌与船一起移动。您可以通过将船舶速度添加到盾牌来做到这一点。比如：

shipPos = target.position;
transform.position += shipVelocity;
separation = Mathf.Abs((transform.position - shipPos).magnitude);

或者让盾牌成为飞船的子对象。

【讨论】：

在我摆脱了围绕“transform.rotation”的条件语句之后，你知道的越多，孩子的盾牌就起作用了！大声笑

【解决方案2】：

好的，所以我需要做的就是让盾牌成为一个孩子，并摆脱 transform.rotation 周围的条件语句，这样它就不会继承父级旋转并破坏盾牌。这是小事！

【讨论】：