Unity 2D C# - 育儿问题对我的游戏不起作用

Question

所以我试图制作一个自上而下的大亨游戏，卡车给你板条箱，你卖板条箱换钱。 我有一个卡车脚本，除了第一部分外，它工作得很好。 所以我编码它，当卡车产生时 2 个板条箱产生并且是卡车游戏对象的父级，问题是当我运行游戏时，对象产生等等，但它们不是卡车的父级，我现场有 6 辆卡车，但只有一辆卡车将其板条箱设置为父级。 有人可以帮忙吗？

代码：

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

public class CarScript : MonoBehaviour
{
   private float speed = 0.01f;

   private Vector3 dropoffLocation;

   private bool hasCrates = true;

   private float dropCratesCooldown = 500f;

   GameObject cratess;

   private float crateUpgrade = 1;

   public GameObject crateUpgrade1;
   public GameObject crateUpgrade2;
   public GameObject crateUpgrade3;
   public GameObject crateUpgrade4;

   private void Start()
   {
      dropoffLocation = new Vector3(3.5f, -7f, 0);

      crateUpgrade1 = GameObject.Find("Boxes In Truck 1");
      crateUpgrade2 = GameObject.Find("Boxes In Truck 2");
      crateUpgrade3 = GameObject.Find("Boxes In Truck 3");
      crateUpgrade4 = GameObject.Find("Boxes In Truck max");

      if (crateUpgrade == 1)
      {
         Instantiate(crateUpgrade1);
         crateUpgrade1.transform.parent = transform;
         //crateUpgrade1.transform.position = new Vector3(0, 0, 0);
      }
   }

   // Update is called once per frame
   void Update()
   {
      if (transform.position.x > 40)
      {
         Destroy(gameObject);
      }

      if (transform.position.x > dropoffLocation.x && hasCrates)
      {
         dropCratesCooldown--;

         if (dropCratesCooldown < 0)
         {
            cratess = transform.GetChild(0).gameObject;

            Destroy(cratess);
            hasCrates = false;
         }
         transform.Translate(0, 0, 0);
      }
      else
      {
         transform.Translate(speed, 0, 0);
      }
   }
}

btw unity 甚至没有告诉我这是一个错误

提前致谢！

Answer 1

Instantiate返回实例化的游戏对象。 这就是您要指定为卡车子项的内容。 按照您现在的做法，您只需继续分配和重新分配crateUpgrade1的父项。 这就是为什么只有您的一辆卡车配备了一个板条箱。

应该是这样：

GameObject crate = Instantiate(crateUpgrade1);
crate.transform.parent = transform;

另一件事； 实例化新对象的标准方法是在项目中创建一个预制资产，然后将对其的引用分配给CarScript ，然后实例化该预制的实例。 所以crateUpgrade1 = GameObject.Find("Boxes In Truck 1"); 部分有点奇怪。

这是通常的做法

public class CarScript : MonoBehaviour
{
   // Assign this to your "crate" prefab in the Unity Inspector
   [SerializeField] private GameObject cratePrefab;

   private void Start()
   {
      if (crateUpgrade == 1)
      {
         GameObject crate = Instantiate(this.cratePrefab);
         crate.transform.parent = transform;
      }
   }
}