portalDoors

local choices = {
{"Farm",false,colors.orange},
{"Walrus",false,colors.green}
{"Bees",false,colors.red}
}


local choice = 0
local base = {true, colors.white}
local size = #choices;

function update()
mon.setCursorPos(1,1)
mon.setBackgroundColor(colors.black)
mon.clear()

for i=1,size do
        if choices[i][2] then
                mon.setTextColor(colors.green)
        else
                mon.setTextColor(colors.red)
        end
        mon.setCursorPos(1,i)
        mon.write(choices[i][1])
end

signal()
end


function signal()
local output = 0

for i=1,size do
        if choices[i][2] then
          output = choices[i][3]
        end
end
if choice == 0 then
    redstone.setBundledOutput("right",0)
else
    redstone.setBundledOutput("right",colors.white + output)
end
end


mon = peripheral.wrap("back")
update()


while true do
        event, p1, x, y= os.pullEvent()

        if event == "monitor_touch" then
                if y <= size then
                        for i = 1,size do
                                choices[i][2] = false
                        end

                        choices[y][2] = true
                        choice = choices[y][3]
                        update()
                end
        elseif event == "redstone" then
                if rs.getBundledInput("right") == colors.white+colors.black+choice then
             for i = 1,size do
                                choices[i][2] = false
                        end
            choice = 0
            update()
                end
        end
end