changes:

- exchanged switch+door sprites
- added asesprite cheat sheet
- implemented door toggle on switch toggle

game/levels.go

@@ -55,6 +55,8 @@ func NewLevel(game *Game, cellsize int, plan *ldtkgo.Level) *Level {
 	systemlist = append(systemlist, systems.NewDestroyableSystem(game.World, gridcontainer,
 		game.Cellsize))
 
+	systemlist = append(systemlist, systems.NewPairSystem(game.World, gridcontainer))
+
 	systemlist = append(systemlist, systems.NewHudSystem(game.World, plan))
 
 	mapslice, backupmap := LevelToSlice(game, plan, cellsize)
@@ -176,11 +178,15 @@ func LevelToSlice(game *Game, level *ldtkgo.Level, tilesize int) (Map, Map) {
 						if ref.Value != nil {
 							refid := ref.Value.(map[string]interface{})
 							tile.Ref = refid["entityIid"].(string)
+							slog.Debug("LOAD TILE", "tileref",
+								tile.Ref, "tileid", tile.Id,
+								"name", entity.Identifier,
+								"isswitch", tile.Switch,
+								"isdoor", tile.Door,
+							)
 						}
 					}
 
-					slog.Debug("LOAD TILE", "tile", entity.TileRect)
-
 					tileRect := entity.TileRect
 
 					tile.Sprite = tileset.SubImage(