Posyv

This is the player's y velocity.

gamevar TEMP 0 0

actor APLAYER MAXPLAYERHEALTH PSTAND 0 0

// double the player's speed

  getplayer[THISACTOR].posxv TEMP
  mulvar TEMP 2
  setplayer[THISACTOR].posxv TEMP
  getplayer[THISACTOR].posyv TEMP
  mulvar TEMP 2
  setplayer[THISACTOR].posyv TEMP

  ifaction 0
    action PSTAND
...