MatrixDisplay

local monitor = peripheral.find("monitor")
local matrix = peripheral.find("Induction Matrix")

monitor.setTextScale(1)

--print("Start in 3")
--sleep(3)

local w,h = monitor.getSize()

local energywidth = w/3

monitor.setBackgroundColor(colors.black)
monitor.setTextColor(colors.white)

function printEnergyBar()

    local energystart = w-1-energywidth
    local startbgcolor = monitor.getBackgroundColor()
    local startfgcolor = monitor.getTextColor()

    local level = matrix.getEnergy()/matrix.getMaxEnergy()
    local fieldheight = h-2

    local energylinefrom = fieldheight-fieldheight*level

    for i=2,h-1 do

        monitor.setCursorPos(energystart,i)
        for j=0,energywidth do
            if i >= energylinefrom then
                monitor.setBackgroundColor(colors.lime)
            else
                monitor.setBackgroundColor(colors.gray)
            end

            monitor.write(" ")
        end

    end

    monitor.setBackgroundColor(startbgcolor)
    monitor.setTextColor(startfgcolor)

end

local suffixes = {"","k","M","G","T"}

function formatNumber(num)

    local idx = 1
    local prefix = ""
    if num < 0 then
        num = -num
        prefix = "-"
    end

    while num > 1000 do

        num = num/1000
        idx = idx+1

    end

    if idx > 1 then
        num = math.ceil(num*100)/100
    else
        num = math.ceil(num)
    end

    if not string.match(num,"%d+%.%d%d+") then
        if string.match(num,"%d+%.%d") then
            num = num.."0"
        elseif string.match(num,"%d+") then
            num = num..".00"
        end
    end
    return prefix..num..suffixes[idx]

end

function jToRF(joule)
    return joule/2.5
end

function printStats()

    local energyLine = 1/5*h
    local outputLine = 2/5*h
    local inputLine = 3/5*h
    local diffLine = 4/5*h
    local startbgcolor = monitor.getBackgroundColor()
    local startfgcolor = monitor.getTextColor()

    local energypercent = math.ceil(100*matrix.getEnergy()/matrix.getMaxEnergy())
    local outputPercent = math.ceil(100*matrix.getOutput()/matrix.getTransferCap())
    local inputPercent = math.ceil(100*matrix.getInput()/matrix.getTransferCap())
    local diff = jToRF(matrix.getInput()-matrix.getOutput())

    monitor.setCursorPos(2,energyLine)
    monitor.setTextColor(colors.lightGray)
    monitor.write(formatNumber(jToRF(matrix.getEnergy())).."RF ("..energypercent .."%)")

    monitor.setCursorPos(2,outputLine)
    monitor.setTextColor(colors.red)
    monitor.write("-"..formatNumber(jToRF(matrix.getOutput())).."RF/t ("..outputPercent .."%)")

    monitor.setCursorPos(2,inputLine)
    monitor.setTextColor(colors.green)
    monitor.write("+"..formatNumber(jToRF(matrix.getInput())).."RF/t ("..inputPercent .."%)")

    monitor.setCursorPos(2,diffLine)
    local prefix = ""
    if diff > 0 then
        monitor.setTextColor(colors.green)
        prefix = "+"
    elseif diff < 0.09 or diff > -0.09 then
        monitor.setTextColor(colors.gray)
        prefix = "±"
        diff = 0;
    else
        monitor.setTextColor(colors.red)
    end
    monitor.write(prefix..formatNumber(diff).."RF/t")

    monitor.setBackgroundColor(startbgcolor)
    monitor.setTextColor(startfgcolor)
end

while true do

    if type(matrix.getEnergy()) == "number" then
        monitor.clear()
        printEnergyBar()
        printStats()
        sleep(0.1)
    else
        sleep(1)
    end
end