IC2 Reactor buttons

local monSide = "top"
local bunSide = "back"

local m = peripheral.wrap(monSide)

local xMax,yMax = m.getSize()

--xStart,yStart,xEnd,yEnd,txt,displayColor,cableColor,stat
local button = {}
button[1]    = {37,16,53,20,_,_,colors.white}

function drawField(xStart,yStart,xEnd,yEnd,col)
    m.setBackgroundColor(col)
    for yP = yStart,yEnd do
        m.setCursorPos(xStart,yP)
        for xP = xStart,xEnd do
            m.write(" ")
        end
    end
end

function drawButton(arr)
    for i = 1,#arr do
        drawField(arr[i][1],arr[i][2],arr[i][3],arr[i][4],arr[i][6])
        m.setCursorPos(arr[i][1]+.5+((arr[i][3]-arr[i][1])/2-#arr[i][5]/2),arr[i][2]+(arr[i][4]-arr[i][2])/2)
        m.write(arr[i][5])
    end
end

function checkButton(arr,xP,yP)
    for i = 1,#arr do
        if xP >= arr[i][1] and xP <= arr[i][3] and yP >= arr[i][2] and yP <= arr[i][4] then
            if arr[i][8] then
                arr[i][8] = false
            else
                arr[i][8] = true
            end
            return i
        end
    end
end

while true do
    button[1][8] = colors.test(rs.getBundledInput(bunSide),colors.white)
    if button[1][8] then
        button[1][5] = "Reaktor stoppen"
        button[1][6] = colors.red
    else
        button[1][5] = "Reaktor starten"
        button[1][6] = colors.lime
    end
    drawButton(button)
    local event,_,xP,yP = os.pullEvent("monitor_touch")
    if checkButton(button,xP,yP) == 1 then
        rs.setBundledOutput(bunSide,colors.gray)
        sleep(.5)
        rs.setBundledOutput(bunSide,0)
    end
end