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EA Template Strategy

This strategy originates from a MetaTrader EA template. It analyses the previous finished candle and opens a position in the direction of the candle body. A bullish candle triggers a long trade, while a bearish candle triggers a short one. Reverse mode flips the interpretation of the candle so the strategy trades against the bar color.

The strategy supports fixed position size or an equity based calculation. Stop-loss and take-profit levels are set in points from the entry price. Trading is skipped when the spread exceeds the allowed threshold.

Details

  • Entry Criteria:
    • Long: previous candle close > open and ReverseTrade disabled.
    • Short: previous candle close < open and ReverseTrade disabled.
    • When ReverseTrade is enabled the signals are inverted.
    • Spread must be below SpreadLimit points.
  • Exit Criteria:
    • Opposite candle color or stop-loss/take-profit hit.
  • Position Sizing:
    • Fixed size Lots or equity based size using RiskPercent when UseMoneyManagement is true.
  • Stops:
    • StopLoss and TakeProfit in points relative to entry price.
  • Long/Short: Both directions.
  • Indicators: None.
  • Risk Level: Medium.

Parameters allow tuning candle type, reverse mode, money management rules and risk limits.

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>
/// Simple candle color strategy converted from a MetaTrader expert advisor.
/// Opens a long position after a bullish candle and a short position after a bearish one.
/// Optional reverse mode flips entry and exit signals.
/// </summary>
public class EaTemplateStrategy : Strategy
{
	private readonly StrategyParam<bool> _reverseTrade;
	private readonly StrategyParam<bool> _useMoneyManagement;
	private readonly StrategyParam<decimal> _riskPercent;
	private readonly StrategyParam<decimal> _lots;
	private readonly StrategyParam<int> _stopLoss;
	private readonly StrategyParam<int> _takeProfit;
	private readonly StrategyParam<int> _spreadLimit;
	private readonly StrategyParam<int> _cooldownBars;
	private readonly StrategyParam<DataType> _candleType;

	private decimal _entryPrice;
	private decimal _prevClose;
	private decimal _prevSma;
	private int _barsSinceTrade;

	/// <summary>
	/// Invert entry and exit signals.
	/// </summary>
	public bool ReverseTrade
	{
		get => _reverseTrade.Value;
		set => _reverseTrade.Value = value;
	}

	/// <summary>
	/// Use equity based volume calculation.
	/// </summary>
	public bool UseMoneyManagement
	{
		get => _useMoneyManagement.Value;
		set => _useMoneyManagement.Value = value;
	}

	/// <summary>
	/// Percent of equity to risk per trade.
	/// </summary>
	public decimal RiskPercent
	{
		get => _riskPercent.Value;
		set => _riskPercent.Value = value;
	}

	/// <summary>
	/// Fixed order size.
	/// </summary>
	public decimal Lots
	{
		get => _lots.Value;
		set => _lots.Value = value;
	}

	/// <summary>
	/// Stop loss in points.
	/// </summary>
	public int StopLoss
	{
		get => _stopLoss.Value;
		set => _stopLoss.Value = value;
	}

	/// <summary>
	/// Take profit in points.
	/// </summary>
	public int TakeProfit
	{
		get => _takeProfit.Value;
		set => _takeProfit.Value = value;
	}

	/// <summary>
	/// Maximum allowed spread in points.
	/// </summary>
	public int SpreadLimit
	{
		get => _spreadLimit.Value;
		set => _spreadLimit.Value = value;
	}

	/// <summary>
	/// Minimum number of bars between entries.
	/// </summary>
	public int CooldownBars
	{
		get => _cooldownBars.Value;
		set => _cooldownBars.Value = value;
	}

	/// <summary>
	/// Candle type for calculations.
	/// </summary>
	public DataType CandleType
	{
		get => _candleType.Value;
		set => _candleType.Value = value;
	}

	/// <summary>
	/// Initializes a new instance of <see cref="EaTemplateStrategy"/>.
	/// </summary>
	public EaTemplateStrategy()
	{
		_reverseTrade = Param(nameof(ReverseTrade), false)
				.SetDisplay("Reverse Trade", "Invert entry and exit signals", "Trading");

		_useMoneyManagement = Param(nameof(UseMoneyManagement), false)
				.SetDisplay("Use Money Management", "Use risk based volume calculation", "Risk Management");

		_riskPercent = Param(nameof(RiskPercent), 30m)
				.SetRange(1m, 100m)
				.SetDisplay("Risk Percent", "Percent of equity to risk", "Risk Management");

		_lots = Param(nameof(Lots), 0.1m)
				.SetGreaterThanZero()
				.SetDisplay("Fixed Lot Size", "Fixed order size", "Risk Management");

		_stopLoss = Param(nameof(StopLoss), 50)
				.SetDisplay("Stop Loss", "Stop loss in points", "Risk Management");

		_takeProfit = Param(nameof(TakeProfit), 70)
				.SetDisplay("Take Profit", "Take profit in points", "Risk Management");

		_spreadLimit = Param(nameof(SpreadLimit), 10)
				.SetDisplay("Spread Limit", "Maximum spread in points", "Trading");

		_cooldownBars = Param(nameof(CooldownBars), 8)
				.SetDisplay("Cooldown Bars", "Minimum number of bars between entries", "Trading");

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

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

	/// <inheritdoc />
	protected override void OnReseted()
	{
		base.OnReseted();
		_entryPrice = 0m;
		_prevClose = 0m;
		_prevSma = 0m;
		_barsSinceTrade = CooldownBars;
	}

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

		StartProtection(null, null);

		var sma = new SimpleMovingAverage { Length = 50 };
		var subscription = SubscribeCandles(CandleType);
		subscription.Bind(sma, ProcessCandle).Start();

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

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

		var isBullish = candle.ClosePrice > candle.OpenPrice;
		var isBearish = candle.ClosePrice < candle.OpenPrice;
		_barsSinceTrade++;

		if (sma == 0m)
			return;

		if (Position == 0)
		{
			var crossAbove = _prevClose != 0m && _prevSma != 0m && _prevClose <= _prevSma && candle.ClosePrice > sma;
			var crossBelow = _prevClose != 0m && _prevSma != 0m && _prevClose >= _prevSma && candle.ClosePrice < sma;
			var buySignal = _barsSinceTrade >= CooldownBars && ((isBullish && crossAbove && !ReverseTrade) || (isBearish && crossBelow && ReverseTrade));
			var sellSignal = _barsSinceTrade >= CooldownBars && ((isBearish && crossBelow && !ReverseTrade) || (isBullish && crossAbove && ReverseTrade));

			if (buySignal)
			{
				BuyMarket();
				_entryPrice = candle.ClosePrice;
				_barsSinceTrade = 0;
			}
			else if (sellSignal)
			{
				SellMarket();
				_entryPrice = candle.ClosePrice;
				_barsSinceTrade = 0;
			}

			_prevClose = candle.ClosePrice;
			_prevSma = sma;
			return;
		}

		var exitLong = (isBearish && !ReverseTrade) || (isBullish && ReverseTrade);
		var exitShort = (isBullish && !ReverseTrade) || (isBearish && ReverseTrade);

		if (Position > 0 && exitLong)
			SellMarket();

		if (Position < 0 && exitShort)
			BuyMarket();

		if (Position > 0)
				CheckStopsForLong(candle.ClosePrice);
		else if (Position < 0)
			CheckStopsForShort(candle.ClosePrice);

		_prevClose = candle.ClosePrice;
		_prevSma = sma;
	}

	private decimal GetOrderVolume(decimal price)
	{
		if (UseMoneyManagement)
		{
				var portfolioValue = Portfolio.CurrentValue ?? 0m;
				var size = portfolioValue * (RiskPercent / 100m) / price;
				return size > 0 ? size : Lots;
		}

		return Lots;
	}

	private void CheckStopsForLong(decimal price)
	{
		var stop = StopLoss * (Security.PriceStep ?? 1m);
		if (stop > 0 && price <= _entryPrice - stop)
		{
				SellMarket();
				return;
		}

		var profit = TakeProfit * (Security.PriceStep ?? 1m);
		if (profit > 0 && price >= _entryPrice + profit)
				SellMarket();
	}

	private void CheckStopsForShort(decimal price)
	{
		var stop = StopLoss * (Security.PriceStep ?? 1m);
		if (stop > 0 && price >= _entryPrice + stop)
		{
				BuyMarket();
				return;
		}

		var profit = TakeProfit * (Security.PriceStep ?? 1m);
		if (profit > 0 && price <= _entryPrice - profit)
				BuyMarket();
	}
}