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Tutorial - Añadir sesiones a estrategias

Estrategia basada en RSI que opera solo durante una sesión configurable. Entra largo cuando el RSI cruza por encima del nivel inferior, entra corto cuando cruza por debajo del nivel superior. Las posiciones se cierran cuando el mercado abandona la sesión.

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>
/// RSI session strategy using RSI momentum with EMA trend filter.
/// </summary>
public class TutorialAddingSessionsToStrategiesStrategy : Strategy
{
	private readonly StrategyParam<int> _rsiPeriod;
	private readonly StrategyParam<decimal> _upper;
	private readonly StrategyParam<decimal> _lower;
	private readonly StrategyParam<DataType> _candleType;

	private decimal _prevRsi;
	private decimal _prevFast;
	private decimal _prevSlow;
	private int _cooldown;

	public int RsiPeriod { get => _rsiPeriod.Value; set => _rsiPeriod.Value = value; }
	public decimal Upper { get => _upper.Value; set => _upper.Value = value; }
	public decimal Lower { get => _lower.Value; set => _lower.Value = value; }
	public DataType CandleType { get => _candleType.Value; set => _candleType.Value = value; }

	public TutorialAddingSessionsToStrategiesStrategy()
	{
		_rsiPeriod = Param(nameof(RsiPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("RSI Period", "RSI calculation length", "RSI");

		_upper = Param(nameof(Upper), 70m)
			.SetDisplay("Upper Level", "Overbought threshold", "RSI");

		_lower = Param(nameof(Lower), 30m)
			.SetDisplay("Lower Level", "Oversold threshold", "RSI");

		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(5).TimeFrame())
			.SetDisplay("Candle Type", "Type of candles", "General");
	}

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

	protected override void OnReseted()
	{
		base.OnReseted();
		_prevRsi = 0;
		_prevFast = 0;
		_prevSlow = 0;
		_cooldown = 0;
	}

	protected override void OnStarted2(DateTime time)
	{
		base.OnStarted2(time);

		var rsi = new RelativeStrengthIndex { Length = RsiPeriod };
		var emaFast = new ExponentialMovingAverage { Length = 8 };
		var emaSlow = new ExponentialMovingAverage { Length = 21 };

		var subscription = SubscribeCandles(CandleType);
		subscription.Bind(rsi, emaFast, emaSlow, ProcessCandle).Start();

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

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

		if (_prevRsi == 0 || _prevFast == 0 || _prevSlow == 0)
		{
			_prevRsi = rsiVal;
			_prevFast = emaFast;
			_prevSlow = emaSlow;
			return;
		}

		if (_cooldown > 0)
		{
			_cooldown--;
			_prevRsi = rsiVal;
			_prevFast = emaFast;
			_prevSlow = emaSlow;
			return;
		}

		var hist = emaFast - emaSlow;
		var histUp = hist > 0m;
		var histDown = hist < 0m;

		var rsiCrossUp = _prevRsi <= 50m && rsiVal > 50m;
		var rsiCrossDown = _prevRsi >= 50m && rsiVal < 50m;

		// Exit
		if (Position > 0 && rsiCrossDown)
		{
			SellMarket();
			_cooldown = 30;
		}
		else if (Position < 0 && rsiCrossUp)
		{
			BuyMarket();
			_cooldown = 30;
		}

		// Entry
		if (Position == 0)
		{
			if (rsiCrossUp && histUp)
			{
				BuyMarket();
				_cooldown = 30;
			}
			else if (rsiCrossDown && histDown)
			{
				SellMarket();
				_cooldown = 30;
			}
		}

		_prevRsi = rsiVal;
		_prevFast = emaFast;
		_prevSlow = emaSlow;
	}
}