Fixes.

Monofoxe/Monofoxe.Tiled/MapBuilder.cs

@@ -161,11 +161,6 @@ protected Tileset GetTilesetFromTileIndex(int index)
 		/// </summary>
 		protected virtual List<Layer> BuildLayers(List<Tileset> tilesets)
 		{
-			if (TiledMap.GetLayers<TiledMapTileLayer>().Length != 0)
-			{
-				CreateTileLookupTable(tilesets);
-			}
-
 			var layers = new List<Layer>();
 
 			foreach (var mapLayer in TiledMap.Layers)
@@ -175,6 +170,11 @@ protected virtual List<Layer> BuildLayers(List<Tileset> tilesets)
 
 				if (mapLayer is TiledMapTileLayer)
 				{
+					if (_tilesetLookupMap == null)
+					{
+						CreateTileLookupTable(tilesets);
+					}
+
 					BuildTileLayer((TiledMapTileLayer)mapLayer, layer);
 				}
 				if (mapLayer is TiledMapObjectLayer)

Samples/Monofoxe.Samples/Game1.cs

@@ -44,6 +44,8 @@ protected override void Initialize()
 
 			GraphicsMgr.VertexBatch.DepthStencilState = depth;
 
+			InactiveSleepTime = new System.TimeSpan(0); //  Makes game not drop frames when window is inactive.
+
 			new GameController();
 		}
 

Samples/Monofoxe.Samples/GameController.cs

@@ -21,6 +21,7 @@ public class GameController : Entity
 
 		private Stopwatch _stopwatch = new Stopwatch();
 
+		// It is recommended to reuse random objects.
 		public static RandomExt Random = new RandomExt();
 
 		public GameController() : base(SceneMgr.GetScene("default")["default"])

Samples/Monofoxe.Samples/SceneSwitcher.cs

@@ -22,7 +22,7 @@ public class SceneSwitcher : Entity
 			new SceneFactory(typeof(ECDemo), ECDemo.Description),
 			new SceneFactory(typeof(SceneSystemDemo), SceneSystemDemo.Description),
 			new SceneFactory(typeof(UtilsDemo)),
-			new SceneFactory(typeof(TiledDemo)),
+			new SceneFactory(typeof(TiledDemo), TiledDemo.Description),
 			new SceneFactory(typeof(VertexBatchDemo)),
 			new SceneFactory(typeof(CoroutinesDemo)),
 			new SceneFactory(typeof(CollisionsDemo)),

Samples/Monofoxe.Samples/Misc/Tiled/SolidMapBuilder.cs → Samples/Monofoxe.Samples/Tiled/SolidMapBuilder.cs

@@ -14,7 +14,7 @@ namespace Monofoxe.Samples.Misc.Tiled
 	public class SolidMapBuilder : MapBuilder
 	{
 
-		public SolidMapBuilder(TiledMap tiledMap) : base(tiledMap) {}
+		public SolidMapBuilder(TiledMap tiledMap) : base(tiledMap) { }
 
 		public override void Build()
 		{
@@ -63,11 +63,11 @@ ITilesetTile[] ConvertTiles(TiledMapTileset tiledTileset, Tileset tileset)
 
 				// Getting solid property from the tile.
 				var solid = false;
-				try
+
+				if (tiledTile.Properties.ContainsKey("Solid"))
 				{
 					solid = bool.Parse(tiledTile.Properties["Solid"]);
 				}
-				catch (Exception) {}
 				// Getting solid property from the tile.
 
 				SolidTilesetTile tilesetTile;