nexushub

local function menu(...)
	local sel = 1
	local list = {...}
	local offX,offY = term.getCursorPos()
	local curX,curY = term.getCursorPos()
	while true do
		if sel > #list then sel = 1 end
		if sel < 1 then sel = #list end
		for i = 1,#list do
			term.setCursorPos(offX,offY+i-1)
			if sel == i then
				print("["..list[i].."]") print(">"..list[i])
			else
				print(" "..list[i].." ")
			end
		end
		while true do
			local e,e1,e2,e3,e4,e5 = os.pullEvent()
			if e == "key" then
				if e1 == 200 then -- up key
					sel = sel-1
					break
				end
				if e1 == 208 then -- down key
					sel = sel+1
					break
				end
				if e1 == 28 then
					term.setCursorPos(curX,curY)
					return list[sel],sel
				end
			end
		end
	end
end

local function book(a)
	local side = "back"
	local color = {...}
	redstone.setBundledOutput(side, color) -- stored space line
	sleep(1)
	redstone.setBundledOutput(side, 0) -- reset all lines to no power
	sleep(5) -- give the player time to use it
	redstone.setBundledOutput(side, colors.purple) -- send back to storage space
	sleep(1)
	redstone.setBundledOutput(side, 0)
end

print("Please select a destination")
while true do
	local selection = menu("1","2","3","4","5","6","7","8")
	if selection == "1" then
	book(colors.blue)
	elseif selection == "2" then
	book(colors.white)
	elseif selection == "3" then
	book(colors.lightgrey)
	elseif selection == "4" then
	book(colors.lightblue)
	elseif selection == "5" then
	book(colors.red)
	elseif selection == "6" then
	book(colors.pink)
	elseif selection == "7" then
	book(colors.yellow)
	elseif selection == "8" then
	book(colors.brown)
end