local sendScore = false
local score = 0

s = peripheral.wrap("left")
w = peripheral.wrap("right")

w.open(101)

function hasItemFrameInFront()

    items = s.getEntityIds("item_frame")
    if #items > 0 then
        for i, j in pairs(items) do
            data = s.getEntityData(items[i], "item_frame")
            pos = data.all().position
            if math.floor(pos.x) == 0 and math.floor(pos.y) == 0 and math.floor(pos.z) == 0 then
                return true
            end
        end
    end

    return false
end

function receiveData()
    while 1 do
        local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")
        if senderChannel == 101 then
            if message == "p" then
                local ok, val = pcall(hasItemFrameInFront)
                if ok == true and val == false then
                    sendScore = true
                    turtle.place()
                end
            elseif message == "s" then
                exit()
            end
        end
        sleep(0.1)
    end
end

function sendData()
    while 1 do
        if sendScore then
            w.transmit(101,101,"+")
            sendScore = false
        end
        sleep(0.1)
    end
end


parallel.waitForAll(receiveData, sendData)