def setUpSound():
	global windAudio, endingAudio, aboveLocation, endingAudioBasic, trumpetAudio
	if USE_HMD_F:
		#Adjusted head location to spatalize towards center of room
		#Next, create 4 subviews to attach sounds to around the room for whooshing
		userView = viz.addView()
		userView.setPosition(0,1.6,0)
		headLocation = viz.addGroup()
		viz.link(userView, headLocation)
		#Good adjustment for reverb and room, might not work as well for the city
		#vizsonic.setReverb (30.0, 0.2, 0.5, 0.9, 0.1)
		vizsonic.setSimulatedRoomRadius(30,30)
		vizsonic.setShaker(1.0)
		viz.setOption('sound3d.useViewRotation', 0)
		#Set auarlizer to play towards center of room
		viz.setListenerSound3D(headLocation)
		#Turn on sound debugging?
		viz.setDebugSound3D(False)
		#Turn on windy city sounds
		vizsonic.setAmbient('windy_edit.wav', 0.75, 0)
		#Configure wind playing based on speed, play at higher location
		aboveView = viz.addView()
		aboveView.setPosition(0,3,0)
		aboveLocation = viz.addGroup()
		viz.link(aboveView, aboveLocation)
		windAudio = aboveLocation.playsound('windMono.wav', viz.STOP, volume=WIND_MIN_VOLUME)
		trumpetAudio = aboveLocation.playsound('audio/hero_trumpet.wav', viz.STOP, volume = 0.75)
	chooseExpStateNLoadSound()

def initTrackers(initFlag=vizconnect.INIT_INDEPENDENT, initList=None):
	#VC: place any general initialization code here
	rawTracker = vizconnect.getRawTrackerDict()

	#VC: initialize a new tracker
	_name = 'head_tracker'
	if vizconnect.isPendingInit('tracker', _name, initFlag, initList):
		#VC: init the raw object
		if initFlag&vizconnect.INIT_RAW:
			#VC: set some parameters
			group = None
			
			#VC: create the raw object
			if group is None:
				group = viz.addGroup()
			rawTracker[_name] = group
	
		#VC: init the wrapper (DO NOT EDIT)
		if initFlag&vizconnect.INIT_WRAPPERS:
			vizconnect.addTracker(rawTracker[_name], _name, make='Virtual', model='Group')

	#VC: initialize a new tracker
	_name = 'rift_tracker'
	if vizconnect.isPendingInit('tracker', _name, initFlag, initList):
		#VC: init the raw object
		if initFlag&vizconnect.INIT_RAW:
			#VC: set some parameters
			index = 0
			
			#VC: create the raw object
			import oculus
			sensorList = oculus.getSensors()
			if index < len(sensorList):
				orientationTracker = sensorList[index]
			else:
				viz.logWarn("** WARNING: Oculus VR Rift Orientation Tracker not present.")
				orientationTracker = viz.addGroup()
				orientationTracker.invalidTracker = True
			rawTracker[_name] = orientationTracker
	
		#VC: init the wrapper (DO NOT EDIT)
		if initFlag&vizconnect.INIT_WRAPPERS:
			vizconnect.addTracker(rawTracker[_name], _name, make='Oculus VR', model='DK2')
	
		#VC: init the offsets
		if initFlag&vizconnect.INIT_OFFSETS:
			_link = vizconnect.getTracker(_name).getLink()
			#VC: clear link offsets
			_link.reset(viz.RESET_OPERATORS)
			
			#VC: reset orientation
			_link.preEuler([0, 0, 0], target=viz.LINK_ORI_OP, priority=-20)

	#VC: return values can be modified here
	return None

def addAppendages(avatar, numberOfArms):
	global chestHorn, leftShoulderHorn, rightShoulderHorn, headHorn

	#adding virtual models of arms
	if some_global_variables.isLeftHanded == 0:
		#right-handed
		some_global_variables.appendage3 = addArm(PATH_TO_STUFF + "skin_tones/thirdArm.png", resources.RIGHT_ARM)
		some_global_variables.appendage4 = addArm(PATH_TO_STUFF + "skin_tones/fourthArm.png", resources.LEFT_ARM)
		some_global_variables.appendage5 = addArm(PATH_TO_STUFF + "skin_tones/fifthArm.png", resources.RIGHT_ARM)
	else:
		#left-handed
		some_global_variables.appendage3 = addArm(PATH_TO_STUFF + "skin_tones/thirdArm.png", resources.LEFT_ARM)
		some_global_variables.appendage4 = addArm(PATH_TO_STUFF + "skin_tones/fourthArm.png", resources.RIGHT_ARM)
		some_global_variables.appendage5 = addArm(PATH_TO_STUFF + "skin_tones/fifthArm.png", resources.LEFT_ARM)
	TouchCube.thirdAppendage = some_global_variables.appendage3

	#adding horns for attaching the arms to
	chestHorn = viz.addGroup()
	chestHornLink = viz.link(avatar.getBone('Bip01 Spine2'), chestHorn)
	chestHornLink.preTrans([0.0, 0.0, 0.0])
	chestHornLink.preEuler([-90.0, 0.0, 0.0])
	
	leftShoulderHorn = viz.addGroup()
	leftShoulderHornLink = viz.link(avatar.getBone('Bip01 L Clavicle'), leftShoulderHorn)
	leftShoulderHornLink.preTrans([-0.2, 0.0, 0.1])
	leftShoulderHornLink.preEuler([-90.0, 0.0, 0.0])

	rightShoulderHorn = viz.addGroup()
	rightShoulderHornLink = viz.link(avatar.getBone('Bip01 R Clavicle'), rightShoulderHorn)
	rightShoulderHornLink.preTrans([0.2, 0.0, 0.1])
	rightShoulderHornLink.preEuler([-90.0, 0.0, 0.0])

	headHorn = viz.addGroup()
	headHornLink = viz.link(avatar.getBone('Bip01 Head'), headHorn)
	headHornLink.preTrans([0.0, 0.2, 0.1])
	headHornLink.preEuler([-90.0, 0.0, 0.0])
	
	#setting the horns for fourth and fifth arms
	if some_global_variables.isLeftHanded == 0:
		#right-handed
		some_global_variables.appendage4.setParent(leftShoulderHorn)
	else:
		#left-handed
		some_global_variables.appendage4.setParent(rightShoulderHorn)
	some_global_variables.appendage5.setParent(headHorn)

	#switching horn attachment to the appendages based on the number of arms to be used
	switchControlSchema(numberOfArms)

	def __init__(self,**kw):
		viz.EventClass.__init__(self)
		node = viz.addGroup()
		viz.VizNode.__init__(self,node.id)
#		viz.EventClass.callback(self,viz.UPDATE_EVENT,self.onUpdate)
		self.sPos = [0,0]
		self.length = 100

def addAppendage(avatar, skinChoices, skin = 0, appendage = 0):
	global thirdAppendage, usingInvisibleRod
	
	thirdAppendageHorn = viz.addGroup()

	if(appendage == 0):
		#Third Arm
		usingInvisibleRod = False
		thirdAppendage = viz.addChild(resources.ARM)
		if skin == 9:
			texture = viz.addTexture("skin_tones/010.png")
			texture.wrap(viz.WRAP_S,viz.REPEAT)
			texture.wrap(viz.WRAP_T,viz.REPEAT)
		else:
			texture = viz.addTexture("skin_tones/00" + skinChoices[skin] + ".png")
			texture.wrap(viz.WRAP_S,viz.REPEAT)
			texture.wrap(viz.WRAP_T,viz.REPEAT)
		thirdAppendage.texture(texture)
		thirdAppendage.emissive([.75, .75, .75])
		thirdAppendage.setScale(resources.ARM_SCALE)
	elif(appendage == 1):
		#Cylinder
		usingInvisibleRod = False
		thirdAppendage = viz.addChild(resources.CYLINDER)
		thirdAppendage.setScale(resources.ARM_SCALE)
	thirdAppendage.setParent(thirdAppendageHorn)
	global tahLink
	tahLink = viz.link(avatar.getBone('Bip01 Spine'), thirdAppendageHorn)
	global offsetOp
	offsetOp = tahLink.preTrans([0, 0.3, 0.1])
	tahLink.preEuler([-90.0, 0.0, 0.0])

	thirdAppendage.collideBox()
	thirdAppendage.disable(viz.DYNAMICS)
	TouchCube.thirdAppendage = thirdAppendage

def addCaveWall(cave):
	"""Create visualization of cave walls"""

	walls = cave.getWalls()

	group = viz.addGroup()

	for w in walls:

		mat = viz.Matrix()
		mat.setQuat(w.getQuat())
		mat.setPosition(w.getCenter())

		wall_node = vizshape.addQuad([w.getWidth(),w.getHeight()],transform=mat,parent=group)
		wall_node.color(viz.GRAY)
		wall_node.alpha(0.3)

		wire_node = vizshape.addQuad([w.getWidth(),w.getHeight()],transform=mat,parent=group)
		wire_node.color(viz.BLACK)
		wire_node.polyMode(viz.POLY_WIRE)
		wire_node.zoffset()

	group.disable(viz.LIGHTING)

	return group

def BridgeRoot(pos=([0,0,0]),euler=([0,0,0])):
	bridge_root = viz.addGroup()
#	axes = vizshape.addAxes(parent=bridge_root)
#	X = viz.addText3D('X',pos=[1.1,0,0],color=viz.RED,scale=[0.3,0.3,0.3],parent=axes)
#	Y = viz.addText3D('Y',pos=[0,1.1,0],color=viz.GREEN,scale=[0.3,0.3,0.3],align=viz.ALIGN_CENTER_BASE,parent=axes)
#	Z = viz.addText3D('Z',pos=[0,0,1.1],color=viz.BLUE,scale=[0.3,0.3,0.3],align=viz.ALIGN_CENTER_BASE,parent=axes)
	bridge_root.setPosition(pos)
	bridge_root.setEuler(euler)
	return bridge_root

def toggleMenu(node=viz.addGroup(),view=viz.MainView,menu=viz.addGUICanvas(),val=viz.TOGGLE):
	menu.visible(val)
	menuLink = None
	if menu.getVisible() is True:
		pos = view.getPosition()
		menu.setPosition(pos[0],pos[1]-1,pos[2]+5)
#		menuLink.remove()
	else:
		menuLink = viz.grab(node,menu)

	def __init__(self, canvas, controller):
		super(ModeMenu, self).__init__(canvas, 'mode', 'Mode Selection')
		
		# Store controller instance
		self.controller = controller
		
		#Store modes from config to populate modemenu with
		self.modes = config.MenuConfig.Modes
		self.getPanel().fontSize(50)
		
		##########################
		"""creating modes panel"""
		##########################
		
		#creating labels for modes
		self.modeLabels = {}
		
		for l in self.modes.iterkeys():
			self.modeLabels[l] = viz.addText(l, parent = canvas)
		
		#creating radio buttons for modes
		self.modeGroup = viz.addGroup(parent = canvas)
		self.radioButtons = {}
		
		for rb in self.modes.iterkeys():
			self.radioButtons[rb] = viz.addRadioButton(self.modeGroup, parent = canvas)
		
		self.radioButtons['Free Play'].set(1)
		
		#creating grid panel to add mode to
		modeGrid = vizdlg.GridPanel(parent = canvas)
		
		#adding modes and radio buttons to grid panel
		for i in self.modes.iterkeys():
			modeGrid.addRow([self.modeLabels[i], self.radioButtons[i]])
		
		##############################
		"""next and back buttons"""
		##############################
		
		#creating grid panels to add next and back buttons to
		setGrid = vizdlg.GridPanel(parent = canvas)
		
		#create back and next buttons and add to grid panel
		backButton = viz.addButtonLabel('Back')
		startButton = viz.addButtonLabel('Next')
		setGrid.addRow([backButton, startButton])
		
		#add back and state button actions
		self.backward = vizact.onbuttondown(backButton, self.controller.backMenu)
		self.forward = vizact.onbuttondown(startButton, self.controller.nextMenu)
		
		###############################
		"""add items to ModeMenu"""
		###############################
		self.addItem(modeGrid)
		self.addItem(setGrid)

	def getHUD(self):
		"""Returns the root HUD node"""
		if not self._hud_root:
			root = viz.addGroup()
			root.setReferenceFrame(viz.RF_VIEW)
			root.drawOrder(100000)
			root.disable(viz.DEPTH_TEST)
			root.disable(viz.LIGHTING)
			self._hud_root = root
		return self._hud_root

	def __init__(self):
		super(self.__class__, self).__init__()
		
		self._day = viz.add('resources/sky_day.osgb',parent=self._root)
		self._day.renderToBackground(order=8)
		self._environment = vizfx.addChild('resources/environment.osgb',parent=self._root)
#		self._environment.renderToBackground()
		self._waveGroup = viz.addGroup(parent=self._root)
#		self._wave_M = viz.addChild('resources/wave.osgb',cache=viz.CACHE_CLONE,pos=([0,1.5,0]),parent=self._waveGroup)
#		self._wave_B = viz.addChild('resources/wave.osgb',cache=viz.CACHE_CLONE,pos=([0,1.5,-50]),parent=self._waveGroup)
		self._newWalkway = vizfx.addChild('resources/walkway.osgb',pos=[0,0.25,0], parent=self._root)	

	def show(self):
		"""Turns on the grid, destroys any prior grid, and writes the current grid to file."""
		if not self.previousMatrix:
			self.previousMatrix = viz.MainView.getMatrix()
		
		self.state = viz.ON
		viz.MainView.reset(viz.HEAD_POS | viz.HEAD_ORI)
		
		if (self.grid):
			self.grid.remove()
		
		self.grid = viz.addGroup()
		
		m =  viz.MainWindow.getMatrix()

		horizOffset = math.tan(self.centerHorizAngle)*self.distance + self.offset[0]
		vertOffset = math.tan(self.centerVertAngle)*self.distance + self.offset[1]
		
		horizDelta = math.tan(self.horizAngle) * self.distance + self.dx
		vertDelta = math.tan(self.vertAngle) * self.distance + self.dy
		
		topLeftPos = [horizOffset - horizDelta * (self.numCols -1) / 2, vertOffset - vertDelta * (self.numRows - 1) / 2, self.distance]
		
		self.pos =  [[[0, 0, 0]] * self.numRows for k in range(self.numCols)]
		
		self.pos_screen_left = [[[0, 0, 0]] * self.numRows for k in range(self.numCols)]
		self.pos_screen_right = [[[0, 0, 0]] * self.numRows for k in range(self.numCols)]
		
		for i in range(0, self.numCols):
			for j in range(0, self.numRows):
				#print i,j
				self.pos[i][j] = [topLeftPos[0] + i * horizDelta, topLeftPos[1] + j * vertDelta, self.distance]
								
				pt = viz.MainWindow.worldToScreen(self.pos[i][j], eye=viz.LEFT_EYE)
				pt[2] = 0
				self.pos_screen_left[i][j] = pt
				#print pt

				
				pt = viz.MainWindow.worldToScreen(self.pos[i][j], eye=viz.RIGHT_EYE)
				pt[2] = 0
				self.pos_screen_right[i][j] = pt
				
				q = viz.addTexQuad(parent=self.grid)
				q.texture(self.cross_tex)
				q.setScale(self.stimScale, self.stimScale, 1)
				q.setPosition(self.pos[i][j])
				q.billboard() #Makes always visible to viewer
				
		#print self.pos
				
		self.writeoutSettings()
		self.writeCustomCalPoints()

	def __init__(self,tracker):

		# Initialize using group node
		group = viz.addGroup()
		viz.VizNode.__init__(self,group.id)

		self._offset = viz.Vector()
		self._tracker = tracker
		self._velocity = 0.0

		# Update tracker every frame
		self._updater = vizact.onupdate(0,self.update)

	def __init__(self):		
		# --Key commands
		self.KEYS = { 'forward'	: 'w'
					,'back' 	: 's'
					,'left' 	: 'a'
					,'right'	: 'd'
					,'down'		: 'z'
					,'up'		: 'x'
					,'reset'	: 'r'
					,'camera'	: 'c'
					,'restart'	: viz.KEY_END
					,'home'		: viz.KEY_HOME
					,'builder'	: 'b'
					,'viewer'	: 'v'
					,'env'		: 't'
					,'grid'		: 'g'
					,'hand'		: 'h'
					,'showMenu' : ' '
					,'snapMenu'	: viz.KEY_CONTROL_L
					,'interact' : viz.MOUSEBUTTON_LEFT
					,'utility'	: viz.MOUSEBUTTON_MIDDLE
					,'rotate'	: viz.MOUSEBUTTON_RIGHT
					,'orient'	: viz.KEY_TAB
					,'mode'		: viz.KEY_SHIFT_L
					,'proxi'	: 'p'
					,'collide'	: 'c'
					,'walk'		: ','
					,'angles'	: '.'
					,'road'		: 'n'
					,'esc'		: viz.KEY_ESCAPE
					,'stereo' 	: '='
					,'capslock'	: viz.KEY_CAPS_LOCK
					,'slideFar'	: '2'
					,'slideNear': '1'
		}
		self.MOVE_SPEED = 1.4
		self.MIN_SPEED = 0.7
		self.MAX_SPEED = 2.8
		self.STRAFE_SPEED = 2.0
		self.TURN_SPEED = 90
		self.ORIGIN_POS = [0,0,0]
		self.ORIGIN_ROT = [0,0,0]
		self.EYE_HEIGHT = 1.8
		self.FOV = 100
		self.CAN_ELEVATE = True
		self.CAN_STRAFE = True
		
		self.NODE = viz.addGroup()
		self.VIEW = viz.MainView

		self.VIEW_LINK = viz.link(self.NODE,self.VIEW)	

def initTrackers(initFlag=vizconnect.INIT_INDEPENDENT, initList=None):
	#VC: place any general initialization code here
	rawTracker = vizconnect.getRawTrackerDict()

	#VC: initialize a new tracker
	_name = 'head_tracker'
	if vizconnect.isPendingInit('tracker', _name, initFlag, initList):
		#VC: init the raw object
		if initFlag&vizconnect.INIT_RAW:
			#VC: set some parameters
			addMouseOrientation = True
			positionSensitivity = 2.5
			heightOffset = 1.82
			sensorIndex = 0
			
			#VC: create the raw object
			import oculus
			sensorList = oculus.getSensors()
			if sensorIndex < len(sensorList):
				dk2Tracker = sensorList[sensorIndex]
				from vizconnect.util import virtual_trackers
				tracker = virtual_trackers.TrackerAndKeyboardWalking(dk2Tracker, addMouseOrientation=addMouseOrientation, positionSensitivity=positionSensitivity, heightOffset=heightOffset)
			else:
				viz.logWarn("** WARNING: Oculus Tracker not present.")
				tracker = viz.addGroup()
				tracker.invalidTracker = True
			rawTracker[_name] = tracker
	
		#VC: init the wrapper (DO NOT EDIT)
		if initFlag&vizconnect.INIT_WRAPPERS:
			vizconnect.addTracker(rawTracker[_name], _name, make='Oculus VR', model='Rift With Mouse And Keyboard')
	
		#VC: init the offsets
		if initFlag&vizconnect.INIT_OFFSETS:
			_link = vizconnect.getTracker(_name).getLink()
			#VC: clear link offsets
			_link.reset(viz.RESET_OPERATORS)
			
			#VC: reset orientation
			_link.preEuler([0, 0, 0], target=viz.LINK_ORI_OP, priority=-20)
	
		#VC: init the mappings for the wrapper
		if initFlag&vizconnect.INIT_WRAPPER_MAPPINGS:
			#VC: on-state mappings
			if initFlag&vizconnect.INIT_MAPPINGS_ON_STATE:
				vizconnect.getTracker(_name).setOnStateEventList([
						vizconnect.onstate(lambda rawInput: rawInput['keyboard'].isButtonDown(19), vizconnect.getTracker(_name).resetHeading),# make=Generic, model=Keyboard, name=keyboard, signal=Key R
				])

	#VC: return values can be modified here
	return None

def configureSound():
	global subview
	subview = viz.addView()
	subview.setPosition(0,1.6,-1)
	headLocation = viz.addGroup()
	viz.link(subview, headLocation)
	vizsonic.setReverb (6.0, 0.2, 0.5, 0.9, 0.1)
	vizsonic.setSimulatedRoomRadius(3,1.5)
	vizsonic.setShaker(1.0)
	viz.setOption('sound3d.useViewRotation', 0)
	#Set auarlizer to play towards center of room
	viz.setListenerSound3D(subview)
	#Turn on sound debugging?
	viz.setDebugSound3D(False)

def initTrackers():
	rawTracker = vizconnect.getRawTrackerDict()
	default = ''

	# initialization code for ppt which is a WorldVizPPT
	pptHostname="localhost"
	vrpn7 = viz.add('vrpn7.dle')
	# initialization for sub object ppt_Rhead
	markerId=1
	rawTracker['ppt_Rhead'] = vrpn7.addTracker('[email protected]'+pptHostname, markerId-1)
	# initialization for sub object ppt_Lhead
	markerId=2
	rawTracker['ppt_Lhead'] = vrpn7.addTracker('[email protected]'+pptHostname, markerId-1)
	# initialization for sub object ppt_hand
	markerId=4
	rawTracker['ppt_hand'] = vrpn7.addTracker('[email protected]'+pptHostname, markerId-1)

	# initialization code for osv3_sensor_bus which is a InertialLabsOSv3SensorBus
	port=11
	sensorIndex=0
	InertialLabs = viz.add('InertialLabs.dle')
	sensors = InertialLabs.addSensorBus(port=port)
	try:
		sensor = sensors[sensorIndex]
	except:
		viz.logWarn("** WARNING: can't connect to InertialLabs OSv3 (Sensor Bus) on port {0} with index {1}. It's likely that not enough sensors are connected.".format(port, sensorIndex))
		sensor = viz.addGroup()
		sensor.invalidTracker = True
	rawTracker['osv3_sensor_bus'] = sensor

	# transformation offset code for osv3_sensor_bus
	link = viz.link(rawTracker['osv3_sensor_bus'], viz.NullLinkable)
	link.setSrcMaskOverride(viz.LINK_ORI|viz.LINK_POS)
	link.preEuler([90, 0, 180])
	rawTracker['osv3_sensor_bus'] = link

	# initialization code for optical_heading which is a VirtualOpticalHeading
	leftPosTracker=vizconnect.getRawTracker('ppt_Lhead')
	rightPosTracker=vizconnect.getRawTracker('ppt_Rhead')
	oriTracker=vizconnect.getRawTracker('osv3_sensor_bus')
	distance=0.37
	from vizconnect.virtual_trackers import OpticalHeading
	rawTracker['optical_heading'] = OpticalHeading(leftPosTracker, rightPosTracker, oriTracker, distance=distance)

	# setting default
	default = 'ppt_Rhead'

	return rawTracker, default

def initTrackers(initFlag=vizconnect.INIT_INDEPENDENT, initList=None):
	#VC: place any general initialization code here
	rawTracker = vizconnect.getRawTrackerDict()

	#VC: initialize a new tracker
	_name = 'rift_orientation_tracker'
	if vizconnect.isPendingInit('tracker', _name, initFlag, initList):
		#VC: init the raw object
		if initFlag&vizconnect.INIT_RAW:
			#VC: create the raw object
			import oculus
			index=0
			sensorList = oculus.getSensors()
			if index < len(sensorList):
				orientationTracker = sensorList[index]
			else:
				viz.logWarn("** WARNING: Oculus VR Rift Orientation Tracker not present.")
				orientationTracker = viz.addGroup()
				orientationTracker.invalidTracker = True
			rawTracker[_name] = orientationTracker
	
		#VC: init the wrapper (DO NOT EDIT)
		if initFlag&vizconnect.INIT_WRAPPERS:
			vizconnect.addTracker(rawTracker[_name], _name, make='Oculus VR', model='Rift Orientation Tracker')
	
		#VC: init the offsets
		if initFlag&vizconnect.INIT_OFFSETS:
			_link = vizconnect.getTracker(_name).getLink()
			#VC: clear link offsets
			_link.reset(viz.RESET_OPERATORS)
			
			#VC: reset orientation
			_link.preEuler([0, 0, 0], target=viz.LINK_ORI_OP, priority=-20)
			
			#VC: apply offsets
			_link.postTrans([0, 1.68, 0])			
	
		#VC: init the mappings for the wrapper
		if initFlag&vizconnect.INIT_WRAPPER_MAPPINGS:
			#VC: on-state mappings
			if initFlag&vizconnect.INIT_MAPPINGS_ON_STATE:
				vizconnect.getTracker(_name).setOnStateEventList([
						vizconnect.onstate(lambda rawInput: rawInput['joystick'].isButtonDown(2), vizconnect.getTracker(_name).resetHeading),# make=Generic, model=Joystick, name=joystick, signal=Button 2
				])

	#VC: return values can be modified here
	return None

	def __setDesktopMode(self):
		self.__cave_mode = False
		
		self.__cave_origin = viz.addGroup()
		
		viz.MainWindow.fov (90) # Reset frustum because the vizcave module plays around with all of this
		viz.MainWindow.setViewOffset (viz.Matrix.euler (0,0,0))
		
		#Set cave tracker to viewtracker, (faulty automatic stereo computation)	
		#self.__cave.setTracker(pos = self.__head_tracker, ori = self.__head_tracker)
						
		self.__cave.addWall(self.__front_wall, mask=viz.CLIENT1) 
		self.__cave.addWall(self.__left_wall, mask=viz.CLIENT2) 
		self.__cave.addWall(self.__right_wall, mask=viz.CLIENT3) 
		self.__cave.addWall(self.__bottom_wall, mask=viz.CLIENT4)
				
		self.drawWalls(True)
		self.drawEyes(True)
		
		self.__cave_origin_auto_update = True

	def AddPanel(self, langu):
		self._hud = viz.addGroup(viz.ORTHO, scene=self._window)
		panel = viz.addTexQuad(parent=viz.ORTHO, scene=self._window, size=200)
		panel.texture(viz.addTexture('textures/panel.png', useCache = True))
		panel.setParent(self._hud)
		self.tag = viz.addTexQuad(parent=viz.ORTHO, scene=self._window, size=200)
		self.tag.texture(viz.addTexture('textures/p'+str(self._player)+'_tag.png', useCache = True))
		self.tag.setParent(self._hud)
		#add the player name as a child of the panel
		self._name = viz.addText(self._name, panel)
		self._name.alignment(viz.ALIGN_CENTER_TOP)
		self._name.font("Segoe UI")
		self._name.color(viz.BLACK)
		self._name.fontSize(14)
		self._name.resolution(.5)
		self._name.setScale(1.5,.75,1)
		self._name.setPosition(3,92,0)
		self._name.setParent(self._hud)
		#add the user feedback message
		self._message = viz.addText('', viz.ORTHO, self._window)
		self._message.alignment(viz.ALIGN_LEFT_TOP)
		self._message.font("Segoe UI")
		self._message.color(viz.BLACK)
		self._message.fontSize(13)
		self._message.resolution(.5)
		self._message.setScale(1.5,.75,1)
		self._message.setPosition(-80,32,0)
		self._message.setParent(self._hud)
		#add the collab icon
		self._collabTextures = [viz.add('textures/signs'+langu+'/collab0.png'), viz.add('textures/signs'+langu+'/collab1.png')]
		self._collabIcon = viz.addTexQuad(parent=viz.ORTHO, scene=self._window, size=150)
		self._collabIcon.texture(self._collabTextures[0])
		self._collabIcon.setParent(self._hud)
		self._collabIcon.drawOrder(20)
		self._collabIcon.setPosition(0, -65, 10)
		self._collabIcon.setScale(1,.4,1)
		self._collabIcon.alpha(0)
		self.ResizePanel()
		#add the info panels
		self.CreateInfoPanels()