ElevatorController.lua

--Adjust as needed for your setup:
    --Modem
    local modemSide = "top"
    --Bundled Cable
    local cableSide = "bottom"

--Code starts here
rednet.open(modemSide)

local floorsFile = "floors.txt"

function loadFloors()
    if not fs.exists(floorsFile) then
        return {}
    else
        local file = fs.open(floorsFile, "r")
        local data = file.readAll()
        file.close()
        return textutils.unserialize(data)
    end
end

function findFloor(cable)
    local floors = loadFloors()
    for _, floor in ipairs(floors) do
        if cable == floor.col then
            return floor
        end
    end
    return {num = "--", name = "Moving", col = 0}
end

function centerText(text, line)
    local width, height = term.getSize()
    term.setCursorPos((width - string.len(text)) / 2, line)
    print(text)
end

function displayUI()
    term.clear()
    centerText("Monitoring Elevator", 1)
    centerText("Current Floor", 4)
end

displayUI() -- Initial UI setup

while true do
    local cable = rs.getBundledInput(cableSide)
    local floor = findFloor(cable)
    rednet.broadcast(floor, "ElevatorFloor")

    -- Update the current floor display
    term.setCursorPos(1, 6) -- Adjust Y to match layout
    term.clearLine()
    centerText(floor.num .. " - " .. floor.name, 6)

    sleep(.5) -- Adjust sleep time as needed
end