pico-8 - handling button presses without repeat

button.lua

--class for tracking button pressed
--adapted from https://www.lexaloffle.com/bbs/?tid=36866
button={
	init=function()
		btn_new={}
		btn_press={}
		for i=0,5 do
			btn_new[i]=false
			btn_press[i]=false
		end
	end,
	update=function()
		for i=0,5 do
			if btn(i)  then
				btn_new[i]=not btn_press[i]
				btn_press[i]=true
			else
				btn_new[i]=false
				btn_press[i]=false
			end
		end
	end,
	pressed=function(b)
		return btn_new[b]
	end,
	reset=function(b)
		btn_new[b]=false
		btn_press[b]=false
	end
}

test-button.p8

#include button.lua

function _init()
	button.init()
end

function _update()
	button.update()
  
	--call button.reset() if you want to clear the array
	--and wait for a new button to be pressed

	if button.pressed(❎) then
		print("pressed ❎")
	end
end