Donchian Plus

// --> cTrader Guru: https://ctrader.guru

using cAlgo.API;
using cAlgo.API.Indicators;

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.FullAccess)]
    public class DonchianPlus : Indicator
    {

        [Parameter("Source")]
        public DataSeries Source { get; set; }

        [Parameter("Period", DefaultValue = 60)]
        public int Period { get; set; }

        [Output("Upper", LineColor = "Blue", PlotType = PlotType.Line, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries UpperResult { get; set; }

        [Output("Middle", LineColor = "Gray", PlotType = PlotType.Line, LineStyle = LineStyle.DotsRare, Thickness = 1)]
        public IndicatorDataSeries MiddleResult { get; set; }

        [Output("Lower", LineColor = "Red", PlotType = PlotType.Line, LineStyle = LineStyle.Solid, Thickness = 1)]
        public IndicatorDataSeries LowerResult { get; set; }

        MovingAverage MA;

        protected override void Initialize()
        {

            MA = Indicators.MovingAverage(Source, 1, MovingAverageType.Simple);

        }

        public override void Calculate(int index)
        {

            if(index < Period)return;
            
            UpperResult[index] = MA.Result.Maximum(Period);
            LowerResult[index] = MA.Result.Minimum(Period);

            MiddleResult[index] = LowerResult[index] + ((UpperResult[index] - LowerResult[index]) / 2);

        }

    }

}