DeMarker gewinnt an Position Band 2 Strategie

namespace StockSharp.Samples.Strategies;

using System;

using Ecng.Common;

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

/// <summary>
/// Strategy converted from "DeMarker gaining position volume 2" expert advisor.
/// Uses DeMarker oscillator thresholds for entry signals.
/// </summary>
public class DeMarkerGainingPositionVolume2Strategy : Strategy
{
	private readonly StrategyParam<int> _deMarkerPeriod;
	private readonly StrategyParam<decimal> _upperLevel;
	private readonly StrategyParam<decimal> _lowerLevel;
	private readonly StrategyParam<DataType> _candleType;

	private RelativeStrengthIndex _rsi;
	private decimal? _prevOscillator;

	/// <summary>
	/// DeMarker averaging period.
	/// </summary>
	public int DeMarkerPeriod
	{
		get => _deMarkerPeriod.Value;
		set => _deMarkerPeriod.Value = value;
	}

	/// <summary>
	/// Upper DeMarker threshold.
	/// </summary>
	public decimal UpperLevel
	{
		get => _upperLevel.Value;
		set => _upperLevel.Value = value;
	}

	/// <summary>
	/// Lower DeMarker threshold.
	/// </summary>
	public decimal LowerLevel
	{
		get => _lowerLevel.Value;
		set => _lowerLevel.Value = value;
	}

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

	public DeMarkerGainingPositionVolume2Strategy()
	{
		_deMarkerPeriod = Param(nameof(DeMarkerPeriod), 14)
			.SetDisplay("DeMarker Period", "Number of bars used by the oscillator.", "Indicator");

		_upperLevel = Param(nameof(UpperLevel), 0.7m)
			.SetDisplay("Upper Level", "Overbought threshold.", "Indicator");

		_lowerLevel = Param(nameof(LowerLevel), 0.3m)
			.SetDisplay("Lower Level", "Oversold threshold.", "Indicator");

		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(60).TimeFrame())
			.SetDisplay("Candle Type", "Timeframe for calculations.", "Data");
	}

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

		_prevOscillator = null;
		_rsi = new RelativeStrengthIndex { Length = DeMarkerPeriod };

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

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

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

		if (!_rsi.IsFormed)
		{
			_prevOscillator = rsiValue / 100m;
			return;
		}

		var oscillatorValue = rsiValue / 100m;

		var volume = Volume;
		if (volume <= 0)
			volume = 1;

		// Cross below lower level => oversold => buy
		if (_prevOscillator is decimal prev)
		{
			var crossBelow = prev >= LowerLevel && oscillatorValue < LowerLevel;
			var crossAbove = prev <= UpperLevel && oscillatorValue > UpperLevel;

			if (crossBelow)
			{
				if (Position <= 0)
					BuyMarket(Position < 0 ? Math.Abs(Position) + volume : volume);
			}
			else if (crossAbove)
			{
				if (Position >= 0)
					SellMarket(Position > 0 ? Math.Abs(Position) + volume : volume);
			}
		}

		_prevOscillator = oscillatorValue;
	}

	/// <inheritdoc />
	protected override void OnReseted()
	{
		_rsi = null;
		_prevOscillator = null;

		base.OnReseted();
	}
}

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 RelativeStrengthIndex
from StockSharp.Algo.Strategies import Strategy

class de_marker_gaining_position_volume2_strategy(Strategy):
    def __init__(self):
        super(de_marker_gaining_position_volume2_strategy, self).__init__()

        self._candle_type = self.Param("CandleType", DataType.TimeFrame(TimeSpan.FromMinutes(60)))
        self._demarker_period = self.Param("DeMarkerPeriod", 14)
        self._upper_level = self.Param("UpperLevel", 0.7)
        self._lower_level = self.Param("LowerLevel", 0.3)

        self._prev_osc = 0.0
        self._has_prev = False

    @property
    def CandleType(self):
        return self._candle_type.Value

    @CandleType.setter
    def CandleType(self, value):
        self._candle_type.Value = value

    @property
    def DeMarkerPeriod(self):
        return self._demarker_period.Value

    @DeMarkerPeriod.setter
    def DeMarkerPeriod(self, value):
        self._demarker_period.Value = value

    @property
    def UpperLevel(self):
        return self._upper_level.Value

    @UpperLevel.setter
    def UpperLevel(self, value):
        self._upper_level.Value = value

    @property
    def LowerLevel(self):
        return self._lower_level.Value

    @LowerLevel.setter
    def LowerLevel(self, value):
        self._lower_level.Value = value

    def OnReseted(self):
        super(de_marker_gaining_position_volume2_strategy, self).OnReseted()
        self._prev_osc = 0.0
        self._has_prev = False

    def OnStarted2(self, time):
        super(de_marker_gaining_position_volume2_strategy, self).OnStarted2(time)
        self._prev_osc = 0.0
        self._has_prev = False

        rsi = RelativeStrengthIndex()
        rsi.Length = self.DeMarkerPeriod

        subscription = self.SubscribeCandles(self.CandleType)
        subscription.Bind(rsi, self._process_candle).Start()

    def _process_candle(self, candle, rsi_value):
        if candle.State != CandleStates.Finished:
            return

        osc_val = float(rsi_value) / 100.0
        upper = float(self.UpperLevel)
        lower = float(self.LowerLevel)

        if self._has_prev:
            # Cross below lower => oversold => buy
            cross_below = self._prev_osc >= lower and osc_val < lower
            # Cross above upper => overbought => sell
            cross_above = self._prev_osc <= upper and osc_val > upper

            if cross_below and self.Position <= 0:
                self.BuyMarket()
            elif cross_above and self.Position >= 0:
                self.SellMarket()

        self._prev_osc = osc_val
        self._has_prev = True

    def CreateClone(self):
        return de_marker_gaining_position_volume2_strategy()