pico-8 cartridge // http://www.pico-8.com
version 37
__lua__
-- maths attacks --
-- by djib --
function _init()
	cls()
	init_btn_status()
end

function _update()
	update_btn_status(❎)
	update_btn_status(🅾️)
end

function _draw()
	result=get_input()
	if result!="" then
		print(get_input())
	end
end
-->8
-- buttons --

function init_btn_status()
 -- no repeating delay for keyboard
	poke(0x5f5d,255)
 -- true when pressed 
 btn_down_status={}
 -- true when quickly released
	btn_up_status={}
	-- true when held
 btn_held_status={}
end

function update_btn_status(button)
 -- clear held status
 if	btn_held_status[button] then
  btn_held_status[button]=false
 -- button was already pressed --
 elseif btn_down_status[button] then
  -- button was held
 	if btnp(button) then
 		btn_held_status[button]=true
 		btn_down_status[button]=false
 	end
 	-- button no longer pressed
 	if not btn(button) then
 		btn_up_status[button]=true
 		btn_down_status[button]=false
 	end
 else
 	if btnp(button) then
 	 btn_down_status[button]=true
 	end
 	if not btn(button) then
 	 btn_held_status[button]=false
 	 btn_down_status[button]=false
 	 btn_up_status[button]=false
 	end
 end
end

function btn_held(button)
 return btn_held_status[button]
end

function btn_pressed(button)
	return btn_up_status[button]
end
-->8
-- game logic --

function get_input()
	result=""
	if btn_pressed(❎) then
		if btn(⬆️) then
			if btn(⬅️) then
				result = "1"
			elseif btn(➡️) then
				result = "3"
			else
				result = "2"
			end
		elseif btn(⬇️) then
			if btn(⬅️) then
				result = "7"
			elseif btn(➡️) then
				result = "9"
			else
				result = "8"
			end
		else
			if btn(⬅️) then
				result = "4"
			elseif btn(➡️) then
				result = "6"
			else
				result = "5"
			end
		end
	elseif btn_held(❎) then
		result = "clear!"
	elseif btn_pressed(🅾️) then
		result = "0"
	elseif btn_held(🅾️) then
		result = "fire!"
	end
	return result
end
__gfx__
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