Merge pull request 'Randomized who starts the fight' (#41) from randomise_fight_start into develop

Reviewed-on: #41
Reviewed-by: kziolkowski <katharina.ziolkowski@gmail.com>

scripts/CSharp/Common/Fight/FightHappening.cs

@@ -307,6 +307,11 @@ public partial class FightHappening : Node
             HappeningData.enemyFighterFormation.SetFighterAtPosition(emptySlotIndex, fighter);
             HappeningData.fighterTurn.AddAsLast(fighter);
         }
+
+        if (GD.RandRange(0, 2) != 0) // 2/3 chance for vesna to start
+        {
+            HappeningData.fighterTurn.SpinBack();
+        }
     }
 
     private void ExecuteNextFighter()

scripts/CSharp/Common/Fight/FighterTurn.cs

@@ -99,6 +99,23 @@ public class FighterTurn : IEnumerable<FightWorld.Fighter>
         return false;
     }
 
+    /// <summary>
+    /// Sets the current one back
+    /// This is an expensive operation, because the entire data structure needs to be circled
+    /// </summary>
+    public void SpinBack()
+    {
+        if (_currentNode == null) return;
+
+        var node = _currentNode;
+        while (node.next != _currentNode)
+        {
+            node = node.next;
+        }
+
+        _currentNode = node;
+    }
+
     public IEnumerator<FightWorld.Fighter> GetEnumerator()
     {
         if (_currentNode == null) return Enumerable.Empty<FightWorld.Fighter>().GetEnumerator();