SoE timer.lua

local framestarted = 0

function savestateloaded()
  framestarted = 0;
end

event.onloadstate(savestateloaded);

function to_rta(ftime) 
  local cpy = ftime
  local minu = math.floor(ftime / 3600)
  cpy = cpy - minu * 3600
  local sec = math.floor(cpy / 60)
  cpy = cpy - sec * 60
  local msec = math.floor(cpy * 1/60 * 1000)
  return string.format("%02d:%02d:%02d", minu, sec, msec)
end

local old_map_id = 0
local map_frame_count = 0
local map_frame_started = 0
memory.usememorydomain("System Bus")

while true do
    gui.text(client.screenwidth() - 80, client.screenheight() - 60, framestarted)
	gui.text(client.screenwidth() - 80, client.screenheight() - 30, to_rta(framestarted))
	--gui.drawText(180, 180, to_rta(framestarted))
	--gui.drawText(200, 200, framestarted)
	gui.drawText(190, 0, "F: "..map_frame_count)
	gui.drawText(180, 10, to_rta(map_frame_count))

	map_id = mainmemory.readbyte(0x0ADB)
	framestarted = framestarted + 1
	--gui.drawText(200, 140, map_id)
	if  map_id ~= old_map_id then
	  --console.write("map changed")
	  map_frame_count = framestarted - map_frame_started
	  map_frame_started = framestarted
	end
	old_map_id = map_id
    emu.frameadvance()
end