SPRITE supports object.layer!
new function SPRITE.eachLayerObj
[fix] use simple loop in SPRITE.each2Obj
new method onStateChange for Player
[fix] shoud go to 'living' when 'bomb' ends
[fix] goto 'dying' if 'juesi' ends
reform object.state definations
dialogs will only display for 20s
donot use STORY.timeout in state 'quit' function
rewording
new function SPRITE.moveToLayer