adjusted location tracker to reflect changes in server method

- location tracker now uses session_id as additional parameter when connecting to server

Scripts/LocationTracker.gd

@@ -36,7 +36,7 @@ func send_position(userdata):
 	if not result.empty():
 		la = result.position
 
-	var url = "/location/impression/%f/%f/%f/%f/%f/%f" % [p.x, p.z ,p.y, la.x, la.z, la.y]
+	var url = "/location/impression/%f/%f/%f/%f/%f/%f/%d" % [p.x, p.z ,p.y, la.x, la.z, la.y, global.session_id]
 	#logger.debug("accessing: "+ url)
 	ServerConnection.get_http(ServerConnection.default_server, url, ServerConnection.default_port)
 	waiting = false

Scripts/global.gd

@@ -3,4 +3,6 @@ extends Node
 # TODO: make this configurable from a file outside of the godot package
 var server = 'http://127.0.0.1'
 var port = 8000
+
+var session_id
 #var DATASET = []

Scripts/main.gd

@@ -61,7 +61,14 @@ func init_world(index):
 
 		var UI = preload("res://Scenes/UI/UI.tscn").instance()
 		get_node("ViewportContainer/DesktopViewport").add_child(UI)
-		get_node("ViewportContainer/DesktopViewport/Camera/LocationTracker").go()
+
+		var session_id = ServerConnection.getJson(server,"/location/session/asdf", port)
+		if session_id.has("Error"):
+			logger.error("Could not get the session id")
+		else:
+			global.session_id = session_id.Data
+			logger.info("The session id is: %d" % global.session_id)
+			get_node("ViewportContainer/DesktopViewport/Camera/LocationTracker").go()