wither farm pc.lua

local monitor = peripheral.wrap("monitor_2")

if not monitor then
    error("Monitor not found! Double check peripheral name.")
end

term.clear()
term.setCursorPos(1,1)
term.write("Running!")

term.redirect(monitor)
local switch = false
local eng = {[true] = "ON", [false] = "OFF"}
local timer = os.startTimer(0)
local headsTimer = os.startTimer(300)

local function oneThenTwo()
    rs.setOutput("bottom", true) --Build frame
    os.sleep(1)
    rs.setOutput("bottom", false)
    os.sleep(.5)
    rs.setOutput("right", true) --Build head
    os.sleep(1)
    rs.setOutput("right", false)
end

local function clearHeads()
    rs.setOutput("left", true)
    os.sleep(3)
    rs.setOutput("left", false)
end

local function termDraw()
    term.clear()
    term.setCursorPos(1,1)
    write("Wither Farm")
    term.setCursorPos(4, 4)
    write("\n STATUS: " .. eng[switch])
end

function Main()
    termDraw()
    while true do
        local e, p = os.pullEvent()
        if e == "timer" and p == timer then
            if switch then
                oneThenTwo()
            end
            timer = os.startTimer(2)
        elseif e == "timer" and p == headsTimer then
            if switch then
                clearHeads()
            end
            headsTimer = os.startTimer(300)
        elseif e == "monitor_touch" then
            switch = not switch
            Main()
        end
    end
end
Main()