what a hack, but the cursors work and the terrain doesnt break anymore

OpenRa.Game/Graphics/CursorSequence.cs

@@ -14,7 +14,10 @@ namespace OpenRa.Game.Graphics
 		public int End { get { return start + length; } }
 		public int Length { get { return length; } }
 
+		public readonly int2 Hotspot;
+
 		Sprite[] sprites;
+
 		public CursorSequence(string cursorSrc, XmlElement e)
 		{
 			sprites = CursorSheetBuilder.LoadAllSprites(cursorSrc, ".shp");
@@ -29,6 +32,9 @@ namespace OpenRa.Game.Graphics
 				length = int.Parse(e.GetAttribute("end")) - start;
 			else
 				length = 1;
+
+			int.TryParse( e.GetAttribute("x"), out Hotspot.X );
+			int.TryParse( e.GetAttribute("y"), out Hotspot.Y );
 		}
 
 		public Sprite GetSprite(int frame)

OpenRa.Game/Graphics/SequenceProvider.cs

@@ -29,6 +29,8 @@ namespace OpenRa.Game.Graphics
 
 			foreach (XmlElement eSequence in eCursor.SelectNodes("./sequence"))
 				cursors.Add(eSequence.GetAttribute("name"), new CursorSequence(cursorSrc, eSequence));
+
+			Log.Write("* LoadSequencesForCursor() done");
 		}
 
 		public static void ForcePrecache() { }	// force static ctor to run

OpenRa.Game/Graphics/SheetBuilder.cs

@@ -25,6 +25,12 @@ namespace OpenRa.Game.Graphics
 			return Add(data, size);
 		}
 
+		public static void ForceNewSheet()
+		{
+			current = NewSheet();
+			channel = NextChannel(null);
+		}
+
 		static Sheet NewSheet() { return new Sheet(renderer, new Size(512, 512)); }
 
 		static Renderer renderer;

OpenRa.Game/Graphics/TerrainRenderer.cs

@@ -32,6 +32,8 @@ namespace OpenRa.Game.Graphics
 
             Size tileSize = new Size( Game.CellSize, Game.CellSize );
 
+			SheetBuilder.ForceNewSheet();
+
             var tileMapping = new Cache<TileReference, Sprite>(
                 x => SheetBuilder.Add(tileSet.GetBytes(x), tileSize));
 

OpenRa.Game/Graphics/Viewport.cs

@@ -17,6 +17,11 @@ namespace OpenRa.Game.Graphics
 		public int Width { get { return (int)size.X; } }
 		public int Height { get { return (int)size.Y; } }
 
+		public Cursor cursor = Cursor.Move;
+		SpriteRenderer cursorRenderer;
+		int2 mousePos;
+		float cursorFrame = 0f;
+
 		public void Scroll(float2 delta)
 		{
 			scrollPosition = (scrollPosition + delta).Constrain(float2.Zero, mapSize);
@@ -27,6 +32,7 @@ namespace OpenRa.Game.Graphics
 			this.size = size;
 			this.mapSize = Game.CellSize * mapSize - size + new float2(128, 0);
 			this.renderer = renderer;
+			cursorRenderer = new SpriteRenderer(renderer, true);
 		}
 
 		List<Region> regions = new List<Region>();
@@ -42,6 +48,9 @@ namespace OpenRa.Game.Graphics
 
 			foreach (Region region in regions)
 				region.Draw(renderer);
+			cursorFrame += 0.01f;
+			cursorRenderer.DrawSprite(cursor.GetSprite((int)cursorFrame), mousePos + Location - cursor.GetHotspot(), 0);
+			cursorRenderer.Flush();
 
 			renderer.EndFrame();
 		}
@@ -49,6 +58,9 @@ namespace OpenRa.Game.Graphics
         Region dragRegion = null;
         public void DispatchMouseInput(MouseInput mi)
         {
+			if (mi.Event == MouseInputEvent.Move)
+				mousePos = mi.Location;
+
             if (dragRegion != null) {
                 dragRegion.HandleMouseInput( mi );
                 if (mi.Event == MouseInputEvent.Up) dragRegion = null;