C# 间隔产卵精灵并防止它们重叠

在我的游戏中，有一个球是我们控制的，这个球穿过墙后会改变颜色。墙由红、蓝、黄三部分组成。这个游戏玩起来就像一只扑翼鸟。这是一个无限的游戏，你必须通过与球相同的颜色。我把墙分为不同的层，并把它们做成一个预制件

以下是我生成部分墙的代码：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
     
public class deployWalls : MonoBehaviour
{
    public GameObject blue;
    public GameObject yellow;
    public GameObject red;
    public float rewpawnTime=1.0f;
    private Vector2 screenBounds;
    // Start is called before the first frame update
    void Start()
    {
        screenBounds = Camera.main.ScreenToWorldPoint(new Vector3 (Screen.width,Screen.height,Camera.main.transform.position.z));
        StartCoroutine(wallWave());
    }

    private void spawnWall()
    {
        GameObject b = Instantiate(blue) as GameObject;
        GameObject y = Instantiate(yellow) as GameObject;
        GameObject r = Instantiate(red) as GameObject;
        b.transform.position = new Vector2(screenBounds.x *-2, Random.Range(-screenBounds.y, screenBounds.y));
        y.transform.position = new Vector2(screenBounds.x *-2, Random.Range(-screenBounds.y, screenBounds.y));
        r.transform.position = new Vector2(screenBounds.x *-2, Random.Range(-screenBounds.y, screenBounds.y));
    }
    
    IEnumerator wallWave()
    {
        while(true){
            yield return new WaitForSeconds(2);
            spawnWall();
        }
    }
}

当我开始游戏时，墙壁部分会产生：

但是，它们的间隔应该是这三部分的总长度，并且它们不应该重叠。颜色的顺序也应该改变

---

问题在于，您完全是在随机化屏幕上墙壁的位置

b.transform.position = new Vector2(screenBounds.x *-2, Random.Range(-screenBounds.y, screenBounds.y));
y.transform.position = new Vector2(screenBounds.x *-2, Random.Range(-screenBounds.y, screenBounds.y));
r.transform.position = new Vector2(screenBounds.x *-2, Random.Range(-screenBounds.y, screenBounds.y));

你需要做的是首先随机排列颜色的顺序。我们还需要墙的高度

float wallHeight = 5; //arbitrary number for example purpose

int orderBlue = 0;
int orderRed = 0;
int orderYellow = 0;

do {
colorBlue = Random.Range(0, 2);
colorRed = Random.Range(0, 2);
colorYellow = Random.Range(0, 2);
} while ((orderBlue == orderRed) || (orderBlue == orderYellow) || (orderRed = orderYellow))

首先确定要使用的颜色，然后在下面添加其他墙

if (colorBlue == 2) {
b.transform.position = new Vector2(screenBounds.x *-2, Random.Range(-screenBounds.y, screenBounds.y));
if (colorYellow == 1) {
y.transform.position = new Vector2(b.transform.position.x, b.transform.position.y - wallHeight);
r.transform.position = new Vector2(b.transform.position.x, b.transform.position.y - 2 * wallHeight);
}
if (colorRed == 1) {
r.transform.position = new Vector2(b.transform.position.x, b.transform.position.y - wallHeight);
y.transform.position = new Vector2(b.transform.position.x, b.transform.position.y - 2 * wallHeight);
}
}

if (colorRed == 2) {
// add same code as above but switch colors
}

if (colorYellow == 2) {
// add same code as above but switch colors    
}

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如何获取墙的高度您可以尝试r.GetComponent（）.size.y；初始化r后，您也可以尝试r.GetComponentChildren（）.size.y，我不确定预制件是如何设置的，您还可以在inspector中体验设置浮动，看看如果上述操作不起作用，效果如何，只需在wallHeight前面添加public即可