question: public boolean check ( final Direction dir , final boolean facing ) { if ( this . dir != dir ) { return false ; } if ( this . facing != facing ) { return false ; } final long now = System . currentTimeMillis ( ) ; if ( now >= expiration ) { return false ; } expiration = now + DELAY ; return true ; }
target:  Check if a new direction matches the existing one, and if so, reset the expiration point.