Observer-modell

src/Backend.cs

@@ -19,6 +19,7 @@ namespace WorldOfPeacecraft
 		private int SelfId;
 		private AutoResetEvent InitializedEvent = new AutoResetEvent(false);
 		private bool initialized = false;
+		private Pathwalker Pathwalker = new Pathwalker();
 
 		public Backend (IGui gui)
 		{
@@ -40,6 +41,7 @@ namespace WorldOfPeacecraft
 		public void SetSelfId (int id)
 		{
 			this.SelfId = id;
+			Players[SelfId].LocationChanged += OnPlayerMoved;
 		}
 
 		public IEnumerable<IEntity> GetDragons ()
@@ -151,22 +153,21 @@ namespace WorldOfPeacecraft
 
 		public void MoveTo (int x, int y)
 		{
-			if (Map.GetTiles () [x, y].IsWalkable ()) {
-				Thread thread = new Thread (() => WalkTo (x, y));
-				thread.IsBackground = true;
-				thread.Start ();
-			}
+			// Hier müsste man locken
+			Pathwalker.Stop();
+			LinkedList<Coordinate> path = Pathfinder.FindPath (Players [SelfId].Coord, new Coordinate (x, y), Map);
+			Pathwalker.SetCoords (path);
 		}
 
-		private void WalkTo (int x, int y)
+		public void MoveStep ()
 		{
-			LinkedList<Coordinate> path = Pathfinder.FindPath (Players [SelfId].Coord, new Coordinate (x, y), Map);
-			Pathwalker walker = new Pathwalker ();
-			walker.SetCoords (path);
-			while (walker.HasMoreSteps()) {
-				SenderBuffer.AddLine("ask:" + walker.NextStep());
-				Thread.Sleep(250);
-			}
+			if (Pathwalker.HasMoreSteps())
+				SenderBuffer.AddLine("ask:" + Pathwalker.NextStep());
+		}
+
+		public void OnPlayerMoved (int x, int y)
+		{
+			MoveStep();
 		}
 
 		public void RefreshGui ()