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PROphet Strategy

The PROphet strategy evaluates price ranges of the last three completed candles to generate signals during specified trading hours. A custom function combines the ranges with user-defined coefficients. If the function is positive, the strategy opens a position in the corresponding direction.

Long trades use coefficients X1..X4 and a trailing stop defined by BuyStopPoints. Short trades use coefficients Y1..Y4 and SellStopPoints. Stops trail when price moves in favor of the position by more than the spread plus twice the stop distance. Positions are closed after 18:00 or when the trailing stop is hit.

Details

  • Entry Criteria
    • Long: Qu(X1,X2,X3,X4) > 0 and current hour between 10 and 18.
    • Short: Qu(Y1,Y2,Y3,Y4) > 0 and current hour between 10 and 18.
  • Exit Criteria
    • Long: Hour > 18 or best bid falls below trailing stop.
    • Short: Hour > 18 or best ask rises above trailing stop.
  • Parameters
    • EnableBuy – allow opening long positions.
    • EnableSell – allow opening short positions.
    • X1, X2, X3, X4 – coefficients for long signal function.
    • Y1, Y2, Y3, Y4 – coefficients for short signal function.
    • BuyStopPoints – trailing stop distance in points for long trades.
    • SellStopPoints – trailing stop distance in points for short trades.
    • CandleType – candle type for calculations (default 5‑minute).
  • Filters
    • Category: Intraday
    • Direction: Both
    • Indicators: None
    • Stops: Trailing stop
    • Complexity: Moderate
    • Timeframe: Short-term
using System;
using System.Linq;
using System.Collections.Generic;

using Ecng.Common;
using Ecng.Collections;
using Ecng.Serialization;

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

namespace StockSharp.Samples.Strategies;

/// <summary>
/// PROphet strategy translated from MQL.
/// Uses price ranges of previous candles to generate signals
/// and applies trailing stops.
/// </summary>
public class PROphetStrategy : Strategy
{
	private readonly StrategyParam<int> _x1;
	private readonly StrategyParam<int> _x2;
	private readonly StrategyParam<int> _x3;
	private readonly StrategyParam<int> _x4;
	private readonly StrategyParam<int> _y1;
	private readonly StrategyParam<int> _y2;
	private readonly StrategyParam<int> _y3;
	private readonly StrategyParam<int> _y4;
	private readonly StrategyParam<decimal> _stopMultiplier;
	private readonly StrategyParam<DataType> _candleType;

	private decimal _stopPrice;
	private decimal _prevHigh1;
	private decimal _prevLow1;
	private decimal _prevHigh2;
	private decimal _prevLow2;
	private decimal _prevHigh3;
	private decimal _prevLow3;
	private int _historyCount;

	/// <summary>First coefficient for the buy signal.</summary>
	public int X1 { get => _x1.Value; set => _x1.Value = value; }
	/// <summary>Second coefficient for the buy signal.</summary>
	public int X2 { get => _x2.Value; set => _x2.Value = value; }
	/// <summary>Third coefficient for the buy signal.</summary>
	public int X3 { get => _x3.Value; set => _x3.Value = value; }
	/// <summary>Fourth coefficient for the buy signal.</summary>
	public int X4 { get => _x4.Value; set => _x4.Value = value; }

	/// <summary>First coefficient for the sell signal.</summary>
	public int Y1 { get => _y1.Value; set => _y1.Value = value; }
	/// <summary>Second coefficient for the sell signal.</summary>
	public int Y2 { get => _y2.Value; set => _y2.Value = value; }
	/// <summary>Third coefficient for the sell signal.</summary>
	public int Y3 { get => _y3.Value; set => _y3.Value = value; }
	/// <summary>Fourth coefficient for the sell signal.</summary>
	public int Y4 { get => _y4.Value; set => _y4.Value = value; }

	/// <summary>Stop loss multiplier.</summary>
	public decimal StopMultiplier { get => _stopMultiplier.Value; set => _stopMultiplier.Value = value; }

	/// <summary>The candle type.</summary>
	public DataType CandleType { get => _candleType.Value; set => _candleType.Value = value; }

	/// <summary>
	/// Constructor.
	/// </summary>
	public PROphetStrategy()
	{
		_x1 = Param(nameof(X1), 9).SetDisplay("X1", "First coefficient for buy", "Buy");
		_x2 = Param(nameof(X2), 29).SetDisplay("X2", "Second coefficient for buy", "Buy");
		_x3 = Param(nameof(X3), 94).SetDisplay("X3", "Third coefficient for buy", "Buy");
		_x4 = Param(nameof(X4), 125).SetDisplay("X4", "Fourth coefficient for buy", "Buy");

		_y1 = Param(nameof(Y1), 61).SetDisplay("Y1", "First coefficient for sell", "Sell");
		_y2 = Param(nameof(Y2), 100).SetDisplay("Y2", "Second coefficient for sell", "Sell");
		_y3 = Param(nameof(Y3), 117).SetDisplay("Y3", "Third coefficient for sell", "Sell");
		_y4 = Param(nameof(Y4), 31).SetDisplay("Y4", "Fourth coefficient for sell", "Sell");

		_stopMultiplier = Param(nameof(StopMultiplier), 0.005m)
			.SetDisplay("Stop Multiplier", "Stop loss as fraction of price", "Risk");

		_candleType = Param(nameof(CandleType), TimeSpan.FromHours(1).TimeFrame())
			.SetDisplay("Candle Type", "Type of candles for calculations", "General");
	}

	/// <inheritdoc />
	protected override void OnReseted()
	{
		base.OnReseted();
		_stopPrice = 0m;
		_prevHigh1 = 0m;
		_prevLow1 = 0m;
		_prevHigh2 = 0m;
		_prevLow2 = 0m;
		_prevHigh3 = 0m;
		_prevLow3 = 0m;
		_historyCount = 0;
	}

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

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

		_historyCount = 0;
		_stopPrice = 0;

		var atr = new AverageTrueRange { Length = 14 };

		var subscription = SubscribeCandles(CandleType);
		subscription
			.Bind(atr, ProcessCandle)
			.Start();

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

	private void ProcessCandle(ICandleMessage candle, decimal atrValue)
	{
		if (candle.State != CandleStates.Finished)
			return;

		if (!IsFormedAndOnlineAndAllowTrading())
			return;

		var close = candle.ClosePrice;

		if (_historyCount >= 3)
		{
			if (Position > 0)
			{
				// Trailing stop for long
				var newStop = close - atrValue * 2;
				if (newStop > _stopPrice)
					_stopPrice = newStop;

				if (close <= _stopPrice)
					SellMarket(Math.Abs(Position));
			}
			else if (Position < 0)
			{
				// Trailing stop for short
				var newStop = close + atrValue * 2;
				if (newStop < _stopPrice || _stopPrice == 0)
					_stopPrice = newStop;

				if (close >= _stopPrice)
					BuyMarket(Math.Abs(Position));
			}
			else
			{
				var buySignal = Qu(X1, X2, X3, X4);
				var sellSignal = Qu(Y1, Y2, Y3, Y4);

				if (buySignal > 0 && sellSignal <= 0)
				{
					_stopPrice = close - atrValue * 2;
					BuyMarket();
				}
				else if (sellSignal > 0 && buySignal <= 0)
				{
					_stopPrice = close + atrValue * 2;
					SellMarket();
				}
			}
		}

		UpdateHistory(candle);
	}

	private void UpdateHistory(ICandleMessage candle)
	{
		_prevHigh3 = _prevHigh2;
		_prevLow3 = _prevLow2;
		_prevHigh2 = _prevHigh1;
		_prevLow2 = _prevLow1;
		_prevHigh1 = candle.HighPrice;
		_prevLow1 = candle.LowPrice;

		if (_historyCount < 3)
			_historyCount++;
	}

	private decimal Qu(int q1, int q2, int q3, int q4)
	{
		return (q1 - 100) * Math.Abs(_prevHigh1 - _prevLow2)
			+ (q2 - 100) * Math.Abs(_prevHigh3 - _prevLow2)
			+ (q3 - 100) * Math.Abs(_prevHigh2 - _prevLow1)
			+ (q4 - 100) * Math.Abs(_prevHigh2 - _prevLow3);
	}
}