Bullet 预制件未到达给定目标

Question

我正在开发我的第一款 FPS 游戏。我将尝试解释到目前为止我做了什么以及我为解决问题所做的努力。

有一个控制玩家的 FPS 控制器，并且玩家有一个武器。 Weapon 游戏对象有一个名为 ButtetSpown 的子对象。我用一个平原作为地面，并添加了一些立方体作为墙壁。那是我的基本设置。我正在通过光线投射收集目标位置。

Vector3 rayOrigin = fpsCam.ViewportToWorldPoint(new Vector3(0.5f, 0.5f, 0.0f));

我将这一点赋予实例化项目符号。下面是我的实例化过程代码（我去掉了枪的动画代码）

void Update () {

        Vector3 rayOrigin = fpsCam.ViewportToWorldPoint(new Vector3(0.5f, 0.5f, 0.0f));
        //Debug.DrawRay(rayOrigin, fpsCam.transform.forward * weaponRange, Color.green);

        if (Input.GetMouseButton(0) && Time.time > NextFire)
        { 
            NextFire = Time.time+ FireRate;

             if (Physics.Raycast(rayOrigin, fpsCam.transform.forward, out hit, weaponRange))
             {

               bulletclone = Instantiate(Bullet.transform, SpownPoint.transform.position, SpownPoint.transform.rotation) as Transform;
                bullet bulletScript = bulletclone.GetComponent<bullet>();
                bulletScript.target  = hit;
                Debug.Log("hit  " + hit.point );

                bulletScript.Accuracy = Accuracy;  

                if (hit.rigidbody != null)
                {
                    hit.rigidbody.AddForce(-hit.normal * 100);

                }
            }

            StartCoroutine( Firing ());

        }
}

子弹脚本更新方法。子弹有刚体连接并且 iskinematic 为真。

 Vector3 targetPosition=new Vector3(target.point.x + Random.Range(-Accuracy*2, Accuracy*2), target.point.y + Random.Range(-Accuracy/2, Accuracy/2), target.point.z);

Debug.Log("Target " + targetPosition);
rb.velocity = (targetPosition- transform.position).normalized * speed;

这很好用：子弹正确地瞄准了它的目标。问题发生在我添加 PoolManager 来控制预制件之后。我写了 PoolManager 脚本。 PoolManager 脚本附加到 PoolManager 游戏对象。

PoolManager.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PoolManager : MonoBehaviour {

    [Tooltip("Maximum size of a gameobject can be in the pool")]
    public int MaxPoolSize = 20;
    public bool CanGrow = true;
    public GameObject[] PoolItems;
    public int[] ItemSize;
    private GameObject[] ActiveList;

    private Dictionary<string, int> Pooled = new Dictionary<string,int>();

    void Start () {
        //Add default prefabs as child of PoolManager gameobject
        for (int i = 0; i < PoolItems.Length; i++)
        {

            Pooled.Add(PoolItems[i].name ,0);
            for (int s = 0; s < ItemSize[i]; s++)
            {
                GameObject g = Instantiate(PoolItems[i]);
                g.name =  PoolItems[i].name;
                g.transform.parent = transform;
                g.SetActive( false);
                Pooled[g.name]=s + 1;
            }
        }

    }


    public Transform InstantiateObject(int ItemIndex, Vector3 Position, Quaternion Rotation)
    {
        Transform test = TryActive(ItemIndex, Position, Rotation);
        if (CanGrow == true && test == null)
        {

            if (Pooled[PoolItems[ItemIndex].name] < MaxPoolSize)
            {
                GameObject g = Instantiate(PoolItems[ItemIndex]);
                g.name = PoolItems[ItemIndex].name;
                g.transform.parent = transform;
                Pooled[g.name] = Pooled[g.name] + 1;
                return TryActive(ItemIndex, Position, Quaternion.identity);
            }


        }
        return test;
    }

    Transform TryActive(int ItemIndex, Vector3 Position, Quaternion Rotation)
    {
        if(PoolItems.Length==0) return null;

        int children = transform.childCount;
        for (int i = 0; i < children; ++i)
        {
            if (transform.GetChild(i).name == PoolItems[ItemIndex].name)
            {
                if (transform.GetChild(i).gameObject.activeInHierarchy == false)
                {
                    transform.GetChild(i).gameObject.SetActive(true);
                    transform.GetChild(i).position = Position;
                    transform.GetChild(i).rotation = Rotation;
                    return PoolItems[ItemIndex].transform;
                }
            }
        }


    }

}

因此所有实例化的预制件都将添加为 PoolManager 游戏对象的子项。

然后我将我的 Gun 脚本更新功能更改如下：

    if (Physics.Raycast(rayOrigin, fpsCam.transform.forward, out hit, weaponRange))
    {
          //1st parameter 0 is my bullet prefab which in PoolManager (PoolItems).
          // Only this code has changed from previous version 

                    bulletclone = poolmanager.InstantiateObject(0, SpownPoint.transform.position , SpownPoint.transform.rotation);

                    bullet bulletScript = bulletclone.GetComponent<bullet>();
                    bulletScript.target  = hit;
                    Debug.Log("hit  " + hit.point );

                    bulletScript.Accuracy = Accuracy;



                    if (hit.rigidbody != null)
                    {
                        hit.rigidbody.AddForce(-hit.normal * 100);

                    }
     }

问题出在这里：子弹在 SpownPoint 中正确激活，但子弹没有击中实际目标。它总是到达平原（地面）的 (0,0,0) 点。我通过调试bullet targetPosition和hit point position检查了ray hit point和bullet target position

Debug.Log("hit  " + hit.point );

Debug.Log("Target " + targetPosition);

谁能告诉我我做错了什么？我应该改变什么？

Answer 1

我在 PoolManager 脚本中发现了问题。 TryActive 方法的 return 语句应从

更改

return PoolItems[ItemIndex].transform;

至

return transform.GetChild(i).transform;

Bullet 预制件未到达给定目标

Bullet prefab doesn't go to given target

c#

unity3d

unity5