• derived nodes inherit all messages from their base classes
  
• see reset method for default settings
  
• this node can also be created with the alias: selector
  
• this node uses a Performer pfSwitch
  
• if the number or named child selected is not found the switch is turned off
  

constructor ygSelector

1 create a pfSwitch for selection
2 print out the number of the selected child

destructor ~ygSelector

method reset

1 if net master then select child 0

method message

1 select the named child node
2 select the child node by number starting with zero
3 select the next child node
4 select the previous child node

method app

1 if selection has changed

1.1 set switch to selection

method appTraverse

1 start timing
2 execute app method
3 call appTraverse recursively on selected child
4 end timing

method select

method select

method selected

method selectedNum

method forward

method back