Chiến lược Trailing Stop trượt giá tốt nhất

/*backtest
start: 2022-09-14 00:00:00
end: 2023-09-20 00:00:00
period: 2d
basePeriod: 1d
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=4
//@author=Daveatt

SystemName = "BEST Trailing Stop Strategy"
TradeId = "BEST"

InitCapital = 100000
InitPosition = 100
InitCommission = 0.075
InitPyramidMax = 1
CalcOnorderFills = true
CalcOnTick = true
DefaultQtyType = strategy.fixed
DefaultQtyValue = strategy.fixed
Precision = 2
Overlay=true


// strategy(title=SystemName, shorttitle=SystemName, overlay=Overlay, 
//  pyramiding=InitPyramidMax, initial_capital=InitCapital, default_qty_type=DefaultQtyType, default_qty_value=InitPosition, commission_type=strategy.commission.percent, 
//  commission_value=InitCommission, calc_on_order_fills=CalcOnorderFills, calc_on_every_tick=CalcOnTick, precision=2)


src = close
// Calculate moving averages
fastSMA = sma(close, 15)
slowSMA = sma(close, 45)

// Calculate trading conditions
enterLong  = crossover(fastSMA, slowSMA)
enterShort = crossunder(fastSMA, slowSMA)

// trend states
since_buy  = barssince(enterLong)
since_sell = barssince(enterShort)
buy_trend  = since_sell > since_buy
sell_trend = since_sell < since_buy 

change_trend = (buy_trend and sell_trend[1]) or (sell_trend and buy_trend[1])

//plot(buy_trend ? 1 : 0, title='buy_trend', transp=100)
//plot(sell_trend ? 1 : 0, title='sell_trend', transp=100)

// get the entry price
entry_price = valuewhen(enterLong or enterShort, close, 0)

// Plot moving averages
plot(series=fastSMA, color=color.teal)
plot(series=slowSMA, color=color.orange)

// Plot the entries
plotshape(enterLong, style=shape.circle, location=location.belowbar, color=color.green, size=size.small)
plotshape(enterShort, style=shape.circle, location=location.abovebar, color=color.red, size=size.small)



///////////////////////////////
//======[ Trailing STOP ]======//
///////////////////////////////

// use SL?
useSL = input(true, "Use stop Loss")
// Configure trail stop level with input
StopTrailPerc = input(title="Trail Loss (%)", type=input.float, minval=0.0, step=0.1, defval=3) * 0.01
// Will trigger the take profit trailing once reached
use_SL_Trigger = input(true, "Use stop Loss Trigger")
StopTrailTrigger   = input(2.0, "SL Trigger (%)",minval=0,step=0.5,type=input.float) * 0.01


StopLossPriceTrigger = 0.0
StopLossPriceTrigger := if (use_SL_Trigger)
    if buy_trend
        entry_price * (1 + StopTrailTrigger) 
    else
        entry_price * (1 - StopTrailTrigger)
else
    -1


var SL_Trigger_Long_HIT = false
SL_Trigger_Long_HIT := useSL and use_SL_Trigger and buy_trend and high >= StopLossPriceTrigger
 ? true : SL_Trigger_Long_HIT[1]


var SL_Trigger_Short_HIT = false
SL_Trigger_Short_HIT := useSL and use_SL_Trigger and sell_trend and low <= StopLossPriceTrigger
 ? true : SL_Trigger_Short_HIT[1]


display_long_SL_trigger     = useSL and buy_trend  and use_SL_Trigger 
 and SL_Trigger_Long_HIT == false and StopLossPriceTrigger != -1
display_short_SL_trigger    = useSL and sell_trend and use_SL_Trigger 
 and SL_Trigger_Short_HIT == false and StopLossPriceTrigger != -1
display_SL_trigger          = display_long_SL_trigger or display_short_SL_trigger

plot(display_SL_trigger ? StopLossPriceTrigger : na, title='SLPriceTrigger', transp=0, 
 color=color.maroon, style=plot.style_circles, linewidth=3)


// Determine trail stop loss prices
longStopPrice = 0.0, shortStopPrice = 0.0

longStopPrice := if useSL and buy_trend
    stopValue = low * (1 - StopTrailPerc)
    max(stopValue, longStopPrice[1])
else
    0

shortStopPrice := if useSL and sell_trend
    stopValue = high * (1 + StopTrailPerc)
    min(stopValue, shortStopPrice[1])
else
    999999

//////////////////////////////////////////////////////////////////////////////////////////
//*** STOP LOSS HIT CONDITIONS TO BE USED IN ALERTS  ***//
//////////////////////////////////////////////////////////////////////////////////////////

cond_long_stop_loss_hit  = useSL and buy_trend and crossunder(low, longStopPrice[1]) 
 and (SL_Trigger_Long_HIT or use_SL_Trigger == false)
cond_short_stop_loss_hit = useSL and sell_trend and crossover(high, shortStopPrice[1]) 
 and (SL_Trigger_Short_HIT or use_SL_Trigger == false)


// Plot stop loss values for confirmation
plot(series=useSL and buy_trend and low >= longStopPrice 
 and (SL_Trigger_Long_HIT or use_SL_Trigger == false)
 ? longStopPrice : na,
 color=color.fuchsia, style=plot.style_cross,
 linewidth=2, title="Long Trail Stop")

plot(series=useSL and sell_trend and high <= shortStopPrice 
 and (SL_Trigger_Short_HIT or use_SL_Trigger == false)
 ? shortStopPrice : na,
 color=color.fuchsia, style=plot.style_cross,
 linewidth=2, title="Short Trail Stop")

close_long  = cond_long_stop_loss_hit
close_short = cond_short_stop_loss_hit

// Submit entry orders
strategy.entry(TradeId + " L", long=true, when=enterLong)
strategy.close(TradeId + " L", when=close_long)

//if (enterShort)
strategy.entry(TradeId + " S", long=false, when=enterShort)
strategy.close(TradeId + " S", when=close_short)


if change_trend
    SL_Trigger_Long_HIT := false
    SL_Trigger_Short_HIT := false