在随机但不同的位置产生大量敌人

Question

我正在制作一款太空游戏，您可以在其中射击来袭的小行星。这些小行星是使用 c# 脚本生成的，它允许我同时生成一定数量的敌人。 对于 2 个 int 数之间的 x 值，生成位置是随机的，但是在我当前的脚本中，一些敌人会相互生成，我无法弄清楚如何让每个敌人生成在不同的位置。 这是我的尝试，任何帮助将不胜感激。

public int spawnCount; //number of asteroids that are spawned
public Vector3 location;
public GameObject asteroid;   
for (int i = 0; i < spawnCount; i++) 
    {
        int locationGiver = 0;
        int[] ChosenLocations = new int[]; 
          //Create an array to store previous chosen locations
                int RandomLocation = Random.Range (-6, 6);
                for(int l = 0; l < ChosenLocations.Length ;l++)
                { 
            //Check if RandomLocation is not the same as any previously determined       locations
                    if(ChosenLocations[l] == RandomLocation)
                    {
                        RandomLocation = Random.Range (-6, 6);
                        l = 0;
              //if it is the same, choose a new location and check if that one is  different
                    }
                }
                location = new Vector3(RandomLocation, 0, 17);
    //use the generated x value to create a location
                Quaternion spawnRotation = Quaternion.identity;
    //gives a random rotation to the asteroids, can be ignored
                Instantiate (asteroid, location, spawnRotation);
    //spawns the asteroid at the determined location
                ChosenLocations[locationGiver] = RandomLocation;
                locationGiver++;
    //save the x-value in the array
}

Answer 1

首先，您需要指定 ChosenLocations 数组的大小。如所写，初始化数组的行将无法编译。如果大小是动态的，那么您需要使用其他类型，例如列表。

为了解决问题，假设您的数组大小为 10。

试试这样的：

int[] ChosenLocations = new int[10];
bool match;
Random r = new Random(); //I am using the .NET random generator, since I don't have Unity3d
for (int l = 0; l < ChosenLocations.Length; l++)
{
    match = true;
    while (match)
    {
        int RandomLocation = r.Next(-6, 7);    
        if (!ChosenLocations.Contains(RandomLocation))
        {
            match = false;
            ChosenLocations[l] = RandomLocation;
            // Instantiate your asteroids here...
            Console.WriteLine(String.Format("Location {0}: {1}", l, ChosenLocations[l]));
         }
   }
}
Console.ReadKey();