BlueThen commented on a Page, Zombie Shooter (Updated 06/11/13) - Dec 17, 2011

Also, in regards to your key events: I would suggest checking for both upper and lower case wasd.

; in keydown
  if ($keyval == 97) || ($keyval == 65) hadd zomb move_l 1
  if ($keyval == 100) || ($keyval == 68) hadd zomb move_r 1
  if ($keyval == 115) || ($keyval == 83) hadd zomb move_d 1
  if ($keyval == 119) || ($keyval == 87) hadd zomb move_u 1

; in keyup
  if ($keyval == 97) || ($keyval == 65) hdel zomb move_l
  if ($keyval == 100) || ($keyval == 68) hdel zomb move_r
  if ($keyval == 115) || ($keyval == 83) hdel zomb move_d
  if ($keyval == 119) || ($keyval == 87) hdel zomb move_u

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