autohotkey - Negating keypress in AHK -

i'm playing game , acts wonky when press 3 buttons @ same time. need resulting input of holding down "a s d" "s".

something

#singleinstance  if getkeystate("a")  if getkeystate("s")  if getkeystate("d")      input "s" 

a simple, perhaps not short combination of hotkeys , up variants trick. script works intended, buttons a , s. when s held down, a nothing. when s not held down, a acquires previous state.

#singleinstance, force setbatchlines, -1  global a_down = false global s_down = false  a::     a_down = true      if( %s_down% = true )         return     send, {a down} return  up::     a_down = false     if( %s_down% = true )         return           send, {a up}         return  s::     s_down = true     if( %a_down% = true )         send, {a up}     send, {s down} return   s up::     s_down = false     if( %a_down% = true )         send, {a down}     send, {s up} return  

in spirit of stackoverflow, not post complete script work 3 keys. left exercise reader.