using System;
using Ecng.Common;
using StockSharp.Algo.Indicators;
using StockSharp.Algo.Strategies;
using StockSharp.BusinessEntities;
using StockSharp.Messages;
namespace StockSharp.Samples.Strategies;
/// <summary>
/// Bull/Bear Candle Martingale strategy: Bullish/bearish candle direction + EMA filter.
/// Buys after strong bullish candle when close crosses above EMA.
/// Sells after strong bearish candle when close crosses below EMA.
/// </summary>
public class BullBearCandleMartingaleStrategy : Strategy
{
private readonly StrategyParam<DataType> _candleType;
private readonly StrategyParam<int> _emaPeriod;
public DataType CandleType
{
get => _candleType.Value;
set => _candleType.Value = value;
}
public int EmaPeriod
{
get => _emaPeriod.Value;
set => _emaPeriod.Value = value;
}
public BullBearCandleMartingaleStrategy()
{
_candleType = Param(nameof(CandleType), TimeSpan.FromHours(1).TimeFrame())
.SetDisplay("Candle Type", "Candle timeframe", "General");
_emaPeriod = Param(nameof(EmaPeriod), 30)
.SetGreaterThanZero()
.SetDisplay("EMA Period", "EMA period", "Indicators");
}
protected override void OnStarted2(DateTime time)
{
base.OnStarted2(time);
var ema = new ExponentialMovingAverage { Length = EmaPeriod };
decimal? prevClose = null;
decimal? prevEma = null;
var subscription = SubscribeCandles(CandleType);
subscription
.Bind(ema, (candle, emaVal) =>
{
if (candle.State != CandleStates.Finished)
return;
if (!IsFormedAndOnlineAndAllowTrading())
return;
var close = candle.ClosePrice;
var bullish = close > candle.OpenPrice;
var bearish = close < candle.OpenPrice;
var bodySize = Math.Abs(close - candle.OpenPrice);
var range = candle.HighPrice - candle.LowPrice;
// Require strong candle body (>50% of range)
var strongCandle = range > 0 && bodySize / range > 0.5m;
if (prevClose.HasValue && prevEma.HasValue && strongCandle)
{
var crossUp = prevClose.Value <= prevEma.Value && close > emaVal;
var crossDown = prevClose.Value >= prevEma.Value && close < emaVal;
if (bullish && crossUp && Position <= 0)
BuyMarket();
else if (bearish && crossDown && Position >= 0)
SellMarket();
}
prevClose = close;
prevEma = emaVal;
})
.Start();
var area = CreateChartArea();
if (area != null)
{
DrawCandles(area, subscription);
DrawIndicator(area, ema);
DrawOwnTrades(area);
}
}
}
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 ExponentialMovingAverage
from StockSharp.Algo.Strategies import Strategy
class bull_bear_candle_martingale_strategy(Strategy):
def __init__(self):
super(bull_bear_candle_martingale_strategy, self).__init__()
self._ema_period = self.Param("EmaPeriod", 30) \
.SetDisplay("EMA Period", "EMA period", "Indicators")
self._ema = None
self._prev_close = None
self._prev_ema = None
@property
def ema_period(self):
return self._ema_period.Value
def OnReseted(self):
super(bull_bear_candle_martingale_strategy, self).OnReseted()
self._ema = None
self._prev_close = None
self._prev_ema = None
def OnStarted2(self, time):
super(bull_bear_candle_martingale_strategy, self).OnStarted2(time)
self._ema = ExponentialMovingAverage()
self._ema.Length = self.ema_period
subscription = self.SubscribeCandles(DataType.TimeFrame(TimeSpan.FromHours(1)))
subscription.Bind(self._ema, self._process_candle)
subscription.Start()
def _process_candle(self, candle, ema_value):
if candle.State != CandleStates.Finished:
return
if not self._ema.IsFormed:
return
close = float(candle.ClosePrice)
open_p = float(candle.OpenPrice)
high = float(candle.HighPrice)
low = float(candle.LowPrice)
ema_val = float(ema_value)
bullish = close > open_p
bearish = close < open_p
body_size = abs(close - open_p)
range_size = high - low
strong_candle = range_size > 0 and body_size / range_size > 0.5
if self._prev_close is not None and self._prev_ema is not None and strong_candle:
cross_up = self._prev_close <= self._prev_ema and close > ema_val
cross_down = self._prev_close >= self._prev_ema and close < ema_val
if bullish and cross_up and self.Position <= 0:
self.BuyMarket()
elif bearish and cross_down and self.Position >= 0:
self.SellMarket()
self._prev_close = close
self._prev_ema = ema_val
def CreateClone(self):
return bull_bear_candle_martingale_strategy()