System.Random - range

Hej, jeg er gået igang med lidt unity efter en meget lang C# pause.

jeg ville lave sådan man spawner et random sted (ud fra de spwans der er placeret i mappet)

jeg har prøvet med det her:

 public void spawn()
     {
         if(spawned)
         {
             Destroy(curentPlayer);
             spawned = false;
         }
         System.Random rand = new System.Random();
         GameObject[] spawn = GameObject.FindGameObjectsWithTag("spawn");
         int spawns = spawn.Length;
         if(spawns == 0)
         {
             ErrorManager.addError("No spawn points in this map");
         }
 
         int random = rand.Next(0, spawns-1);
         GameObject randomSpawn = spawn[random];
         curentPlayer = Instantiate(playerPrefab, randomSpawn.transform.position, Quaternion.identity);
         spawned = true;
     }

virker helt perfekt, men har lagt mærke til jeg ALDRIG spawner det ene sted.

så prøvet det her stump kode for at se hvor random det faktisk var.

 void randTest()
     {
         System.Random rand = new System.Random();
         int[] res = new int[3];
         for(int i=0; i<1000; i++)
         {
             int r = rand.Next(0, 2);
             res[r]++;
         }
 
         Debug.Log(res[0]);
         Debug.Log(res[1]);
         Debug.Log(res[2]);
     }

output

492
UnityEngine.Debug:Log(Object)
player:randTest() (at Assets/Scripts/player.cs:49)
player:Start() (at Assets/Scripts/player.cs:17)

508
UnityEngine.Debug:Log(Object)
player:randTest() (at Assets/Scripts/player.cs:50)
player:Start() (at Assets/Scripts/player.cs:17)

0
UnityEngine.Debug:Log(Object)
player:randTest() (at Assets/Scripts/player.cs:51)
player:Start() (at Assets/Scripts/player.cs:17)

så 3 forkommer aldrig, nogen bud på hvorfor?

Next(Int32, Int32) Returns a random number within a specified range.

http://msdn.microsoft.com/en-us/library/system.random.aspx



hele klassen er her:

 using UnityEngine;
 using System.Collections;
 
 public class player : MonoBehaviour 
 {
 
     public  GameObject playerPrefab;
     private Object curentPlayer;
     private bool spawned = false;
 
     // Use this for initialization
     void Start () 
     {
     
         //Spawn player
         spawn();
 
         randTest();
             
     }
 
     public void spawn()
     {
         if(spawned)
         {
             Destroy(curentPlayer);
             spawned = false;
         }
         System.Random rand = new System.Random();
         GameObject[] spawn = GameObject.FindGameObjectsWithTag("spawn");
         int spawns = spawn.Length;
         if(spawns == 0)
         {
             ErrorManager.addError("No spawn points in the map");
         }
 
         int random = rand.Next(0, spawns-1);
         GameObject randomSpawn = spawn[random];
         curentPlayer = Instantiate(playerPrefab, randomSpawn.transform.position, Quaternion.identity);
         spawned = true;
     }
 
 
     void randTest()
     {
         System.Random rand = new System.Random();
         int[] res = new int[3];
         for(int i=0; i<1000; i++)
         {
             int r = rand.Next(0, 2);
             res[r]++;
         }
 
         Debug.Log(res[0]);
         Debug.Log(res[1]);
         Debug.Log(res[2]);
     }
 
 }