Randomly spawn players on map

Assets/Resources/Levels.xml

@@ -2,8 +2,9 @@
 <Levels>
   <Developer StartLevel="0" />
   <Level>
-    <Item prefab="Player One" x="-5" />
-    <Item prefab="Player Two" x="5" />
+    <Item prefab="Start_Position" x="5" />
+    <Item prefab="Start_Position" x="-5" />
+    <Item prefab="Start_Position" />
     <Item prefab="ground" y="-1.5" scalex="22.78" />
     <Item prefab="ground" x="-7.5" y="-0.38" rot="90" scalex="30" />
     <Item prefab="ground" x="7.5" y="-0.38" rot="90" scalex="30" />

Assets/Resources/Prefabs/Start_Position.prefab.meta

+fileFormatVersion: 2
+guid: d0e95f1c653856b409b235f9de3f6493
+timeCreated: 1433514922
+licenseType: Free
+NativeFormatImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/GameMaster.cs

@@ -6,6 +6,7 @@ using UnityEngine.UI;
 public class GameMaster : MonoBehaviour {
 
     DeserializedLevelsLoader levelLoader;
+    public PlayerControl[] playerPrefabs;
     public GameObject gameOverPanel;
     public Text rankingText;
 
@@ -13,6 +14,50 @@ public class GameMaster : MonoBehaviour {
     void Start () {
         levelLoader = new DeserializedLevelsLoader();
         levelLoader.loadLevel();
+
+        deleteAllPlayers();
+        spawnPlayers(2);
+    }
+
+    private void deleteAllPlayers()
+    {
+      foreach (GameObject player in GameObject.FindGameObjectsWithTag("Player"))
+        Object.Destroy(player, 0f);
+    }
+
+    private void spawnPlayers(int count)
+    {
+      Debug.Log("spawning " + count + " players");
+
+      GameObject[] startPositions = GameObject.FindGameObjectsWithTag("Start_Position");
+      if (count > startPositions.Length)
+      {
+        count = startPositions.Length;
+        Debug.LogError("map is capped at " + count + " players");
+      }
+
+      shuffle(startPositions);
+
+      for (int i = 0; i < count; i++)
+      {
+        PlayerControl player = (PlayerControl) Object.Instantiate(
+            playerPrefabs[i % playerPrefabs.Length],
+            startPositions[i].transform.position,
+            Quaternion.identity);
+        player.init(i + 1);
+      }
+    }
+
+    private static void shuffle<T>(T[] array)
+    {
+      int i = array.Length;
+      while (i > 1)
+      {
+        int k = Random.Range(0, i--);
+        T t = array[k];
+        array[k] = array[i];
+        array[i] = t;
+      }
     }
 
     public void gameOver(List<string> ranking)

Assets/Scripts/PlayerControl.cs

@@ -60,8 +60,6 @@ public class PlayerControl : MonoBehaviour
     void Start()
     {
         body2D = GetComponent<Rigidbody2D>();
-
-        init(playerNumber);
     }
 
     public void init(int playerNumber)