void Start(){
subscribeToSorcererInstancePublisher (); // jump into game
nodeDiameter = nodeRadius*2;
gridSizeX = Mathf.RoundToInt(gridWorldSize.x/nodeDiameter);
gridSizeY = Mathf.RoundToInt(gridWorldSize.y/nodeDiameter);
createGrid();
Fighter fighter = GameObject.FindObjectOfType(typeof(Fighter))as Fighter;
sorcerer = (Sorcerer)SorcererInstanceManager.getSorcerer (); // Sorcerer sorcerer = GameObject.FindObjectOfType (typeof (Sorcerer))as Sorcerer;
fighter.setGrid (this);
sorcerer.setGrid (this);
}