Broker

local monitor = peripheral.find("monitor")
local previousValue, currentValue = 0,0
local width, height = term.getSize()

-- This has to be the amount of diamonds inserted into an inventory, the playes bet in other words
local maxAmount = 3

function main()
    if (monitor ~= nil) then
        term.redirect(monitor)
        width, height = term.getSize()
    end
    term.clear()
    paintutils.drawLine(1, math.ceil(height/2), width, math.ceil(height/2), colors.lightGray)
    --math.randomseed(os.time())

    for i=1,height do
        term.setCursorPos(1, i)

        local value = math.ceil(height/2)-i
        term.write(value)
    end

    for x=1,width do
        local increment = math.random(-1,1)
        previousValue = currentValue
        currentValue = currentValue + increment

        local currentY = currentValue+math.ceil(height/2)
        local previousY = previousValue+math.ceil(height/2)

        local color = colors.gray
        if (currentY < math.ceil(height/2)) then
            color = colors.green
        elseif (currentY > math.ceil(height/2)) then
            color = colors.red
        end

        --paintutils.drawLine(x-1, previousY, x, currentY, color)
        paintutils.drawPixel(x, currentY, color)
        sleep(0.1)
    end

    -- clamp value depending on the amount inserted
    if (currentValue > maxAmount) then
        currentValue = maxAmount
    elseif (currentValue < -maxAmount) then
        currentValue = -maxAmount
    end

    currentValue = -currentValue
    term.setCursorPos(width/2,1)
    paintutils.drawPixel(width/2,1, colors.black)
    print("Value: " .. currentValue)
end

main()