local movie_name = "Mario Kart 64 (USA)_CM Gauntlet_v3_CONSOLE_VERIFIED.bk2"

local controller_number = 1;

if (movie_name == "") then
  local last_slash = string.find(movie.filename(),"\\")
  local previous = last_slash

  while (last_slash ~= nil) do
    previous = last_slash;
    last_slash = string.find(movie.filename(),"\\",last_slash+1)
  end
  previous = previous + 1

  movie_name = string.sub(movie.filename(),previous)
end


local handle = io.open(movie_name .. "." .. controller_number .. ".input",  "w");
handle:close()


local mnemonic_positions = {{5,34},{36,65},{67,96},{98,127}};

local input_used = false;
function not_lag_frame()
  input_used = true
end
event.oninputpoll(not_lag_frame);

while true do


  if (movie.mode() == "PLAY") then
    if (input_used == true) then
      local button_data = movie.getinputasmnemonic(emu.framecount()-1)
      local handle = io.open(movie_name .. "." .. controller_number .. ".input", "a");
      handle:write(string.sub(button_data,mnemonic_positions[controller_number][1],mnemonic_positions[controller_number][2]))
      handle:write("\n");
      handle:close()
    end
  end
  input_used = false;
  emu.frameadvance()

end