信号接收器 原型v2 红石

-- Open rednet on the modem side (adjust "left" as needed)
rednet.open("top")

print("Waiting for coordinate broadcasts when redstone is active on the front...")

while true do
    -- Only process messages when redstone signal on the "front" is on.
    if redstone.getInput("front") then
        -- Use a timeout (0.5 seconds) so the call doesn't block indefinitely and allows rechecking the redstone state.
        local senderID, message, protocol = rednet.receive("coordBroadcast", 0.5)

        if senderID then
            if message and message.x and message.y and message.z then
                print("Received coordinates from computer " .. senderID .. ":")
                print("X: " .. message.x .. ", Y: " .. message.y .. ", Z: " .. message.z)
            else
                print("Received invalid data from computer " .. senderID)
            end
        end
    else
        -- Optionally, you can print a message when redstone is off or simply sleep quietly.
        -- print("Redstone is off on the front; not receiving messages.")
        sleep(0.1)
    end
end