addr_zone = 0xfffe10
addr_act = 0xfffe11
addr_restartflag = 0xfffe02

input_state = {}

gui.register( function()
	input_state = input.get()
	
	local zone = memory.readbyte(addr_zone)
	local act = memory.readbyte(addr_act)
	local restartflag = memory.readbyte(addr_restartflag)
	
	gui.text(0, 217, string.format("Zone %X", zone))
	if restartflag == 0 then
		if do_button("-", 32, 216, 6, 7) then
			memory.writebyte(addr_zone, zone - 1)
			memory.writebyte(addr_restartflag, 1)
		end
		if do_button("+", 39, 216, 6, 7) then
			memory.writebyte(addr_zone, zone + 1)
			memory.writebyte(addr_restartflag, 1)
		end
	end
	
	gui.text(52, 217, string.format("Act %X", act))
	if restartflag == 0 then
		if do_button("-", 80, 216, 6, 7) then
			memory.writebyte(addr_act, act - 1)
			memory.writebyte(addr_restartflag, 1)
		end
		if do_button("+", 87, 216, 6, 7) then
			memory.writebyte(addr_act, act + 1)
			memory.writebyte(addr_restartflag, 1)
		end
	end
	
	if restartflag == 0 then
		if do_button("Restart", 100, 216, 30, 7) then
			memory.writebyte(addr_restartflag, 1)
		end
	end
end)

function do_button(text, x, y, width, height)
	local return_value, fill_color, outline_color
	
	if (input_state.xmouse >= x and input_state.ymouse >= y) and
		(input_state.xmouse <= x + width and input_state.ymouse <= y + height) then
		outline_color = {255, 255, 255, 255}
		
		if input_state.leftclick then
			return_value = true
			fill_color = {127, 0, 0, 255}
		else
			fill_color = {0, 0, 192, 255}
		end
	else
		fill_color = {0, 0, 127, 255}
		outline_color = {0, 0, 255, 255}
	end

	gui.box(x, y, x + width, y + height, fill_color, outline_color)
	gui.text(x + 2, y + 2, text, {255, 255, 255, 255}, {0, 0, 0, 0})
	
	return return_value
end

input.registerhotkey(1, function()
	memory.writebyte(addr_zone, memory.readbyte(addr_zone) - 1)
	memory.writebyte(addr_restartflag, 1)
end)

input.registerhotkey(2, function()
	memory.writebyte(addr_zone, memory.readbyte(addr_zone) + 1)
	memory.writebyte(addr_restartflag, 1)
end)

input.registerhotkey(3, function()
	memory.writebyte(addr_act, memory.readbyte(addr_act) - 1)
	memory.writebyte(addr_restartflag, 1)
end)

input.registerhotkey(4, function()
	memory.writebyte(addr_act, memory.readbyte(addr_act) + 1)
	memory.writebyte(addr_restartflag, 1)
end)