diff --git a/src/Events.pbi b/src/Events.pbi
index c7620c0..ffa6e4b 100644
--- a/src/Events.pbi
+++ b/src/Events.pbi
@@ -48,7 +48,9 @@ Procedure HandleEventRunningGame()
   
   ; Player movement
   If KeyboardReleased(#PB_Key_Left) And Player\X > 0
-    Player\X-1
+    If TileIsType(#TILESET_TYPE_FLOOR, Player\X-1, Player\Y) Or TileIsType(#TILESET_TYPE_GRASS, Player\X-1, Player\Y)
+      Player\X-1
+    EndIf
    
     ; Camera positioning
     If Player\X < (Cam\X + Cam\Padding) And Cam\X > 0
@@ -57,8 +59,10 @@ Procedure HandleEventRunningGame()
   EndIf
   
   If KeyboardReleased(#PB_Key_Right) And Player\X < #MAP_WIDTH-1
-    Player\X+1
-
+    If TileIsType(#TILESET_TYPE_FLOOR, Player\X+1, Player\Y) Or TileIsType(#TILESET_TYPE_GRASS, Player\X+1, Player\Y)
+      Player\X+1
+    EndIf
+    
     ; Camera positioning
     If Player\X > (Cam\X + Cam\Width - Cam\Padding) And (Cam\X + Cam\Width) < #MAP_WIDTH-1
       Cam\X + 1
@@ -66,7 +70,9 @@ Procedure HandleEventRunningGame()
   EndIf
   
   If KeyboardReleased(#PB_Key_Up) And Player\Y > 0
-    Player\Y-1
+    If TileIsType(#TILESET_TYPE_FLOOR, Player\X, Player\Y-1) Or TileIsType(#TILESET_TYPE_GRASS, Player\X, Player\Y-1)
+      Player\Y-1
+    EndIf
     
     ; Camera positioning
     If Player\Y< (Cam\Y + Cam\Padding) And Cam\Y > 0
@@ -75,7 +81,9 @@ Procedure HandleEventRunningGame()
   EndIf
   
   If KeyboardReleased(#PB_Key_Down) And Player\Y < #MAP_HEIGHT-1
-    Player\Y+1
+    If TileIsType(#TILESET_TYPE_FLOOR, Player\X, Player\Y+1) Or TileIsType(#TILESET_TYPE_GRASS, Player\X, Player\Y+1)
+      Player\Y+1
+    EndIf
     
     ; Camera positioning
     If Player\Y > (Cam\Y + Cam\Height - Cam\Padding) And (Cam\Y + Cam\Height) < #MAP_HEIGHT-1
diff --git a/src/Functions.pbi b/src/Functions.pbi
index f29de92..03e1f36 100644
--- a/src/Functions.pbi
+++ b/src/Functions.pbi
@@ -15,8 +15,21 @@ Procedure InitTileset()
   For i=0 To 5
     For j=0 To 5
       
-      Tileset(count) = CopySprite(GFXTileset, #PB_Any)
-      ClipSprite(Tileset(count), #TILE_SIZE*j, #TILE_SIZE*i, #TILE_SIZE, #TILE_SIZE)
+      Tileset(count)\ID = CopySprite(GFXTileset, #PB_Any)
+      ClipSprite(Tileset(count)\ID, #TILE_SIZE*j, #TILE_SIZE*i, #TILE_SIZE, #TILE_SIZE)
+      
+      Tileset(count)\Type = #TILESET_TYPE_FLOOR
+      Select count
+        Case 0
+          Tileset(count)\Type = #TILESET_TYPE_PLAYER
+        Case 2
+          Tileset(count)\Type = #TILESET_TYPE_WALL
+        Case 3
+          Tileset(count)\Type = #TILESET_TYPE_SOLID
+        Case 4
+          Tileset(count)\Type = #TILESET_TYPE_GRASS
+      EndSelect
+      
       count+1
     Next
   Next
@@ -112,7 +125,7 @@ EndProcedure
 
 ; Map itself
 Procedure DrawTile(number.i, x.i, y.i)
-  DisplaySprite(Tileset(number), #TILE_SIZE*x, #TILE_SIZE*y)
+  DisplaySprite(Tileset(number)\ID, #TILE_SIZE*x, #TILE_SIZE*y)
 EndProcedure
 
 Procedure DrawMap()
@@ -125,6 +138,18 @@ Procedure DrawMap()
   Next
 EndProcedure
 
+Procedure TileIsType(type.i, X.i, Y.i)
+  Define istype.b
+  
+  istype = #False
+  
+  If Tileset(TileMap(X, Y)\TileNumber)\Type = type
+    istype = #True
+  EndIf
+  
+  ProcedureReturn istype
+EndProcedure
+
 ; The player
 Procedure DrawPlayer()
   DrawTile(Player\TileNumber, Player\X-Cam\X, Player\Y-Cam\Y)
diff --git a/src/Globals.pbi b/src/Globals.pbi
index cb2b7f5..5c2d433 100644
--- a/src/Globals.pbi
+++ b/src/Globals.pbi
@@ -6,6 +6,13 @@
 #MAP_HEIGHT = 120
 ; TODO: Aus der XML lesen
 
+; Tileset entries
+#TILESET_TYPE_PLAYER = 0
+#TILESET_TYPE_FLOOR = 1
+#TILESET_TYPE_WALL = 2
+#TILESET_TYPE_SOLID = 3
+#TILESET_TYPE_GRASS = 4
+
 ; Global variables
 Global Fullscreen = 0
 Global Title.s = "ESCape - Build " + Str(#PB_Editor_BuildCount)
@@ -37,7 +44,7 @@ Global Font_H3 = LoadFont(3, "Verdana", 10)
 ; Graphics
 Global GFXLogo.i
 Global GFXTileset.i
-Global Dim Tileset.i(36)
+Global Dim Tileset.TilsetEntry(36)
 
 ; Sounds
 Global MenuSoundStarted = 0
diff --git a/src/Structs.pbi b/src/Structs.pbi
index f4e3f70..d8031c0 100644
--- a/src/Structs.pbi
+++ b/src/Structs.pbi
@@ -31,6 +31,11 @@ Structure GameMenu
   List Entries.GameMenuItem()
 EndStructure
 
+Structure TilsetEntry
+  ID.i
+  Type.i
+EndStructure
+
 Structure Tile
   X.i
   Y.i