Backbone-Basket-Strategie (StockSharp)

using System;

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

namespace StockSharp.Samples.Strategies;

/// <summary>
/// Backbone strategy that alternates between long and short based on retracements from recent extremes.
/// Uses ATR to detect when price has pulled back enough from its high/low to enter a new position.
/// </summary>
public class BackboneBasketStrategy : Strategy
{
	private readonly StrategyParam<DataType> _candleType;
	private readonly StrategyParam<int> _atrPeriod;
	private readonly StrategyParam<decimal> _retraceMultiplier;

	private decimal _highestPrice;
	private decimal _lowestPrice;
	private decimal _entryPrice;
	private int _lastDirection; // 1 = long, -1 = short, 0 = none

	public BackboneBasketStrategy()
	{
		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(5).TimeFrame())
			.SetDisplay("Candle Type", "Timeframe used for analysis.", "General");

		_atrPeriod = Param(nameof(AtrPeriod), 14)
			.SetDisplay("ATR Period", "Period for ATR indicator.", "Indicators");

		_retraceMultiplier = Param(nameof(RetraceMultiplier), 2m)
			.SetDisplay("Retrace Multiplier", "ATR multiplier for retracement threshold.", "Signals");
	}

	public DataType CandleType
	{
		get => _candleType.Value;
		set => _candleType.Value = value;
	}

	public int AtrPeriod
	{
		get => _atrPeriod.Value;
		set => _atrPeriod.Value = value;
	}

	public decimal RetraceMultiplier
	{
		get => _retraceMultiplier.Value;
		set => _retraceMultiplier.Value = value;
	}

	/// <inheritdoc />
	/// <inheritdoc />
	protected override void OnReseted()
	{
		base.OnReseted();

		_highestPrice = 0;
		_lowestPrice = decimal.MaxValue;
		_entryPrice = 0;
		_lastDirection = 0;
	}

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

		_highestPrice = 0;
		_lowestPrice = decimal.MaxValue;
		_entryPrice = 0;
		_lastDirection = 0;

		var atr = new AverageTrueRange { Length = AtrPeriod };

		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 (atrValue <= 0)
			return;

		var close = candle.ClosePrice;

		// Track extremes
		if (close > _highestPrice)
			_highestPrice = close;
		if (close < _lowestPrice)
			_lowestPrice = close;

		var threshold = atrValue * RetraceMultiplier;

		// Exit existing positions on retracement
		if (Position > 0 && close < _highestPrice - threshold)
		{
			SellMarket();
			_entryPrice = 0;
			_lastDirection = 1;
			_lowestPrice = close;
		}
		else if (Position < 0 && close > _lowestPrice + threshold)
		{
			BuyMarket();
			_entryPrice = 0;
			_lastDirection = -1;
			_highestPrice = close;
		}

		// Entry logic - alternate direction
		if (Position == 0)
		{
			if (_lastDirection != 1 && close < _highestPrice - threshold)
			{
				// Price pulled back from high - sell
				SellMarket();
				_entryPrice = close;
				_lastDirection = -1;
				_lowestPrice = close;
			}
			else if (_lastDirection != -1 && close > _lowestPrice + threshold)
			{
				// Price bounced from low - buy
				BuyMarket();
				_entryPrice = close;
				_lastDirection = 1;
				_highestPrice = close;
			}
		}
	}
}

import clr

clr.AddReference("StockSharp.Messages")
clr.AddReference("StockSharp.Algo")
clr.AddReference("StockSharp.Algo.Indicators")
clr.AddReference("StockSharp.Algo.Strategies")

from System import TimeSpan
from StockSharp.Messages import DataType, CandleStates
from StockSharp.Algo.Indicators import AverageTrueRange
from StockSharp.Algo.Strategies import Strategy


class backbone_basket_strategy(Strategy):
    def __init__(self):
        super(backbone_basket_strategy, self).__init__()
        self._candle_type = self.Param("CandleType", DataType.TimeFrame(TimeSpan.FromMinutes(5))) \
            .SetDisplay("Candle Type", "Timeframe used for analysis.", "General")
        self._atr_period = self.Param("AtrPeriod", 14) \
            .SetDisplay("ATR Period", "Period for ATR indicator.", "Indicators")
        self._retrace_multiplier = self.Param("RetraceMultiplier", 2.0) \
            .SetDisplay("Retrace Multiplier", "ATR multiplier for retracement threshold.", "Signals")
        self._highest_price = 0.0
        self._lowest_price = float('inf')
        self._entry_price = 0.0
        self._last_direction = 0

    @property
    def candle_type(self):
        return self._candle_type.Value
    @candle_type.setter
    def candle_type(self, value):
        self._candle_type.Value = value

    @property
    def atr_period(self):
        return self._atr_period.Value
    @atr_period.setter
    def atr_period(self, value):
        self._atr_period.Value = value

    @property
    def retrace_multiplier(self):
        return self._retrace_multiplier.Value
    @retrace_multiplier.setter
    def retrace_multiplier(self, value):
        self._retrace_multiplier.Value = value

    def OnReseted(self):
        super(backbone_basket_strategy, self).OnReseted()
        self._highest_price = 0.0
        self._lowest_price = float('inf')
        self._entry_price = 0.0
        self._last_direction = 0

    def OnStarted2(self, time):
        super(backbone_basket_strategy, self).OnStarted2(time)
        self._highest_price = 0.0
        self._lowest_price = float('inf')
        self._entry_price = 0.0
        self._last_direction = 0
        atr = AverageTrueRange()
        atr.Length = self.atr_period
        subscription = self.SubscribeCandles(self.candle_type)
        subscription.Bind(atr, self.OnProcess).Start()
        area = self.CreateChartArea()
        if area is not None:
            self.DrawCandles(area, subscription)
            self.DrawIndicator(area, atr)
            self.DrawOwnTrades(area)

    def OnProcess(self, candle, atr_value):
        if candle.State != CandleStates.Finished:
            return
        if atr_value <= 0:
            return

        close = float(candle.ClosePrice)

        if close > self._highest_price:
            self._highest_price = close
        if close < self._lowest_price:
            self._lowest_price = close

        threshold = float(atr_value) * self.retrace_multiplier

        # Exit existing positions on retracement
        if self.Position > 0 and close < self._highest_price - threshold:
            self.SellMarket()
            self._entry_price = 0.0
            self._last_direction = 1
            self._lowest_price = close
        elif self.Position < 0 and close > self._lowest_price + threshold:
            self.BuyMarket()
            self._entry_price = 0.0
            self._last_direction = -1
            self._highest_price = close

        # Entry logic - alternate direction
        if self.Position == 0:
            if self._last_direction != 1 and close < self._highest_price - threshold:
                self.SellMarket()
                self._entry_price = close
                self._last_direction = -1
                self._lowest_price = close
            elif self._last_direction != -1 and close > self._lowest_price + threshold:
                self.BuyMarket()
                self._entry_price = close
                self._last_direction = 1
                self._highest_price = close

    def CreateClone(self):
        return backbone_basket_strategy()