field SFBool upk   FALSE
      field SFBool down  FALSE
      field SFBool left  FALSE
      field SFBool right FALSE
      field SFBool space FALSE
  
      field SFInt32 k_upk   1004 ##38
      field SFInt32 k_down  1005 ##40
      field SFInt32 k_left  1006 ##37
      field SFInt32 k_right 1007 ##39
      field SFInt32 k_space 32