• derived nodes inherit all messages from their base classes
  
• see reset method for default settings
  
• this node can also be created with the alias: CAVEHead
  
• this node should be a child of a ygUser node
  
• sets the head of the user above it for use in collision detection and user detection
  
• this node is required for walking navigation and collision detection
  

constructor ygCAVEHead

method reset