Mob Farm Controller

-- Advanced Computer + Monitor + Bundled Cable Control Panel

-- Configuration
local monitor = peripheral.wrap("top") -- replace "right" if your monitor is elsewhere
local redstoneSide = "left"              -- bundled cable on this side

monitor.setTextScale(1)
monitor.setBackgroundColor(colors.black)
monitor.setTextColor(colors.white)
monitor.clear()

-- Redirect paintutils and write functions to the monitor
local oldTerm = term.current()
term.redirect(monitor)

-- Device control buttons
local devices = {
  {label = "FAN",      color = colors.blue,   active = true },
  {label = "LIGHT",    color = colors.white,  active = false},
  {label = "MIXER",    color = colors.red,    active = true },
  {label = "MONSTERS", color = colors.green,  active = true }
}

-- Position helpers
local function getDeviceButtonArea(index)
  local x1 = 3
  local y1 = 2 + (index - 1) * 4
  local x2 = x1 + 20
  local y2 = y1 + 2
  return x1, y1, x2, y2
end

-- Update bundled cable signal
local function updateBundledOutput()
  local signal = 0
  for _, dev in ipairs(devices) do
    if dev.active then
      signal = bit.bor(signal, dev.color)
    end
  end
  redstone.setBundledOutput(redstoneSide, signal)
end

-- Draw device toggle button
local function drawDeviceButton(index)
  local dev = devices[index]
  local x1, y1, x2, y2 = getDeviceButtonArea(index)
  local bgColor = dev.active and dev.color or colors.gray

  paintutils.drawFilledBox(x1, y1, x2, y2, bgColor)

  local label = dev.label .. " [" .. (dev.active and "ON" or "OFF") .. "]"
  local labelX = x1 + math.floor((x2 - x1 - #label) / 2)
  term.setCursorPos(labelX, y1 + 1)
  term.setTextColor(colors.black)
  term.write(label)
end

-- Redraw everything
local function drawAllButtons()
  term.setBackgroundColor(colors.black)
  term.clear()

  for i = 1, #devices do
    drawDeviceButton(i)
  end
end

-- Detect click on any button
local function getClickedButton(x, y)
  for i = 1, #devices do
    local x1, y1, x2, y2 = getDeviceButtonArea(i)
    if x >= x1 and x <= x2 and y >= y1 and y <= y2 then
      return i
    end
  end
  return -1
end

-- Initialize UI
drawAllButtons()
updateBundledOutput()

-- Event loop
while true do
  local event, side, x, y = os.pullEvent("monitor_touch")
  local index = getClickedButton(x, y)

  if index >= 0 then
    devices[index].active = not devices[index].active
    drawDeviceButton(index)
    updateBundledOutput()
  end
end