(function(){
	UndoStack.register([
		{
			type: "create-scenery",
      undo: function(state){
      },
      redo: function(state){
      },
		},
		{
			type: "update-scenery",
      undo: function(state){
      },
      redo: function(state){
      },
		},
		{
			type: "destroy-scenery",
      undo: function(state){
      },
      redo: function(state){
      },
		},
		
		// 
		
		{
			type: "create-room",
      undo: function(room){
        Rooms.remove(room)
        Rooms.clipper.update()
      },
      redo: function(room){
        Rooms.add(room)
        Rooms.clipper.update()
				app.tube("builder-pick-room", room)
      },
		},
		{
			type: "update-room",
      undo: function(state){
        var room = Rooms.list[state.id]
        room.rect.assign( state.rect )
        room.height = state.height
        Rooms.clipper.update()
				app.tube("builder-pick-room", room)
      },
      redo: function(state){
        var room = Rooms.list[state.id]
        room.rect.assign( state.rect )
        room.height = state.height
        Rooms.clipper.update()
				app.tube("builder-pick-room", room)
      },
		},
		{
			type: "destroy-room",
      undo: function(room){
        Rooms.add(room)
        Rooms.clipper.update()
				app.tube("builder-pick-room", room)
      },
      redo: function(room){
        Rooms.remove(room)
        Rooms.clipper.update()
      },
		},
		
		//

		{
			type: "update-wallpaper",
      undo: function(state){
      },
      redo: function(state){
      },
		},
		
	])
})()