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Color Zerolag DeMarker Strategy

This strategy converts the original MQL5 expert Exp_ColorZerolagDeMarker to the StockSharp framework. It uses a custom combination of several DeMarker indicators to build fast and slow trend lines. Trading signals are generated when these lines cross.

Indicators

  • Five DeMarker indicators with different periods: 8, 21, 34, 55 and 89.
  • Each indicator value is multiplied by a weight factor (0.05, 0.10, 0.16, 0.26 and 0.43).
  • The weighted values are summed to form the fast line.
  • The slow line is an exponentially smoothed version of the fast line controlled by the Smoothing parameter.

Trading Logic

  1. Subscribe to candles with a configurable timeframe.
  2. On each finished candle, calculate the fast and slow lines.
  3. When the previous fast line is above the previous slow line and the current fast line falls below the slow line:
    • Close short positions if allowed.
    • Open a long position if enabled.
  4. When the previous fast line is below the previous slow line and the current fast line rises above the slow line:
    • Close long positions if allowed.
    • Open a short position if enabled.
  5. Optional stop-loss and take-profit percentages are applied for newly opened positions.

Parameters

  • CandleTimeframe – timeframe for candle subscription.
  • Smoothing – smoothing factor for the slow line.
  • Factor1–Factor5 – weight factors for each DeMarker period.
  • DeMarkerPeriod1–DeMarkerPeriod5 – periods for DeMarker indicators.
  • Volume – order volume.
  • OpenBuy / OpenSell – enable long/short entries.
  • CloseBuy / CloseSell – enable exits for long/short positions.
  • StopLossPct / TakeProfitPct – optional percentage-based risk management.

Notes

The strategy operates on closed candles only and uses the high-level StockSharp API (SubscribeCandles and Bind). All comments in the code are provided in English for clarity.

using System;
using System.Collections.Generic;

using Ecng.Common;

using StockSharp.Algo.Indicators;
using StockSharp.Algo.Strategies;
using StockSharp.BusinessEntities;
using StockSharp.Messages;

namespace StockSharp.Samples.Strategies;

/// <summary>
/// Strategy based on the Color Zerolag DeMarker indicator.
/// Combines two DeMarker indicators into fast and slow trend lines.
/// Generates signals on line crossovers.
/// </summary>
public class ColorZerolagDeMarkerStrategy : Strategy
{
	private readonly StrategyParam<int> _fastPeriod;
	private readonly StrategyParam<int> _slowPeriod;
	private readonly StrategyParam<int> _smoothing;
	private readonly StrategyParam<decimal> _stopLossPct;
	private readonly StrategyParam<decimal> _takeProfitPct;
	private readonly StrategyParam<DataType> _candleType;

	private decimal _prevFast;
	private decimal _prevSlow;
	private bool _hasPrev;
	private decimal _smoothConst;

	public int FastPeriod { get => _fastPeriod.Value; set => _fastPeriod.Value = value; }
	public int SlowPeriod { get => _slowPeriod.Value; set => _slowPeriod.Value = value; }
	public int Smoothing { get => _smoothing.Value; set => _smoothing.Value = value; }
	public decimal StopLossPct { get => _stopLossPct.Value; set => _stopLossPct.Value = value; }
	public decimal TakeProfitPct { get => _takeProfitPct.Value; set => _takeProfitPct.Value = value; }
	public DataType CandleType { get => _candleType.Value; set => _candleType.Value = value; }

	public ColorZerolagDeMarkerStrategy()
	{
		_fastPeriod = Param(nameof(FastPeriod), 8)
			.SetGreaterThanZero()
			.SetDisplay("Fast Period", "Fast DeMarker period", "Indicator");

		_slowPeriod = Param(nameof(SlowPeriod), 21)
			.SetGreaterThanZero()
			.SetDisplay("Slow Period", "Slow DeMarker period", "Indicator");

		_smoothing = Param(nameof(Smoothing), 15)
			.SetGreaterThanZero()
			.SetDisplay("Smoothing", "Smoothing factor for slow line", "Indicator");

		_stopLossPct = Param(nameof(StopLossPct), 2m)
			.SetDisplay("Stop Loss %", "Stop loss percentage", "Risk");

		_takeProfitPct = Param(nameof(TakeProfitPct), 3m)
			.SetDisplay("Take Profit %", "Take profit percentage", "Risk");

		_candleType = Param(nameof(CandleType), TimeSpan.FromHours(4).TimeFrame())
			.SetDisplay("Candle Type", "Timeframe", "General");
	}

	/// <inheritdoc />
	public override IEnumerable<(Security sec, DataType dt)> GetWorkingSecurities()
	{
		return [(Security, CandleType)];
	}

	/// <inheritdoc />
	protected override void OnReseted()
	{
		base.OnReseted();
		_prevFast = 0; _prevSlow = 0; _hasPrev = false;
		_smoothConst = default;
	}

	/// <inheritdoc />
	protected override void OnStarted2(DateTime time)
	{
		base.OnStarted2(time);

		_smoothConst = (Smoothing - 1m) / Smoothing;

		var fast = new DeMarker { Length = FastPeriod };
		var slow = new DeMarker { Length = SlowPeriod };

		var subscription = SubscribeCandles(CandleType);
		subscription
			.Bind(fast, slow, (candle, fastVal, slowVal) =>
			{
				if (candle.State != CandleStates.Finished)
					return;

				var fastLine = fastVal;
				var slowLine = fastLine / Smoothing + _prevSlow * _smoothConst;

				if (_hasPrev)
				{
					if (_prevFast < _prevSlow && fastLine > slowLine && Position <= 0)
					{
						if (Position < 0) BuyMarket();
						BuyMarket();
					}
					else if (_prevFast > _prevSlow && fastLine < slowLine && Position >= 0)
					{
						if (Position > 0) SellMarket();
						SellMarket();
					}
				}

				_prevFast = fastLine;
				_prevSlow = slowLine;
				_hasPrev = true;
			})
			.Start();

		StartProtection(
			takeProfit: new Unit(TakeProfitPct, UnitTypes.Percent),
			stopLoss: new Unit(StopLossPct, UnitTypes.Percent),
			useMarketOrders: true);

		var area = CreateChartArea();
		if (area != null)
		{
			DrawCandles(area, subscription);
			DrawOwnTrades(area);
		}
	}
}