টার্টল ব্রেকআউট রিট্রেসমেন্ট অ্যাডাপ্টিভ ট্রেডিং কৌশল

//Noro
//2020

//Original idea from «Way of the Turtle: The Secret Methods that Turned Ordinary People into Legendary Traders» (2007, CURTIS FAITH, ISBN: 9780071486644) 

//@version=4
strategy("Noro's Turtles Strategy", shorttitle = "Turtles str", overlay = true, default_qty_type = strategy.percent_of_equity, initial_capital = 100, default_qty_value = 100, commission_value = 0.1)

//Settings
needlong = input(true, title = "Long")
needshort = input(false, title = "Short")
sizelong = input(100, defval = 100, minval = 1, maxval = 10000, title = "Lot long, %")
sizeshort = input(100, defval = 100, minval = 1, maxval = 10000, title = "Lot short, %")
needfast = input(true, title = "Fast")
needslow = input(true, title = "Slow")
enter_fast = input(20, minval=1)
exit_fast = input(10, minval=1)
enter_slow = input(55, minval=1)
exit_slow = input(20, minval=1)
showof = input(true, title = "Show offset")
showll = input(false, title = "Show lines")
showlabel = input(true, defval = true, title = "Show label")
fromyear = input(1900, defval = 1900, minval = 1900, maxval = 2100, title = "From Year")
toyear = input(2100, defval = 2100, minval = 1900, maxval = 2100, title = "To Year")
frommonth = input(01, defval = 01, minval = 01, maxval = 12, title = "From Month")
tomonth = input(12, defval = 12, minval = 01, maxval = 12, title = "To Month")
fromday = input(01, defval = 01, minval = 01, maxval = 31, title = "From day")
today = input(31, defval = 31, minval = 01, maxval = 31, title = "To day")

//Fast
fastL = highest(enter_fast)
fastLC = lowest(exit_fast)
fastS = lowest(enter_fast)
fastSC = highest(exit_fast)

//Slow
slowL = highest(enter_slow)
slowLC = lowest(exit_slow)
slowS = lowest(enter_slow)
slowSC = highest(exit_slow)

//Lines
offset = showof ? 1 : 0
col1 = showll and needlong and needfast ? color.blue : na
col2 = showll and needshort and needfast ? color.red : na
col3 = showll and needlong and needslow ? color.blue : na
col4 = showll and needshort and needslow ? color.red : na
plot(fastL, color = col1, offset = offset)
plot(fastLC, color = col1, offset = offset)
plot(fastS, color = col2, offset = offset)
plot(fastSC, color = col2, offset = offset)
plot(slowL, color = col3, offset = offset)
plot(slowLC, color = col3, offset = offset)
plot(slowS, color = col4, offset = offset)
plot(slowSC, color = col4, offset = offset)

//Orders
truetime = time > timestamp(fromyear, frommonth, fromday, 00, 00) and time < timestamp(toyear, tomonth, today, 23, 59)
size = strategy.position_size
lotlong = 0.0
lotlong := size != size[1] ? strategy.equity / close * sizelong / 100 : lotlong[1]
lotshort = 0.0
lotshort := size != size[1] ? strategy.equity / close * sizeshort / 100 : lotshort[1]

//Fast
strategy.entry("fast L", strategy.long, lotlong, stop = fastL, when = needfast and needlong and strategy.position_size == 0 and truetime)
strategy.entry("fast S", strategy.short, lotshort, stop = fastS, when = needfast and needshort and strategy.position_size == 0 and truetime)
strategy.exit("fast L", stop = fastLC, when = needfast and needlong and strategy.position_size > 0)
strategy.exit("fast S", stop = fastSC, when = needfast and needshort and strategy.position_size < 0)

//Slow
strategy.entry("slow L", strategy.long, lotlong, stop = slowL, when = needslow and needlong and strategy.position_size == 0 and truetime)
strategy.entry("slow S", strategy.short, lotshort, stop = slowS, when = needslow and needshort and strategy.position_size == 0 and truetime)
strategy.exit("slow L", stop = slowLC, when = needslow and needlong and strategy.position_size > 0)
strategy.exit("slow S", stop = slowSC, when = needslow and needshort and strategy.position_size < 0)

if time > timestamp(toyear, tomonth, today, 23, 59)
    strategy.close_all()
    strategy.cancel("fast L")
    strategy.cancel("fast S")
    strategy.cancel("slow L")
    strategy.cancel("slow S")
    
if showlabel

    //Drawdown
    max = 0.0
    max := max(strategy.equity, nz(max[1]))
    dd = (strategy.equity / max - 1) * 100
    min = 100.0
    min := min(dd, nz(min[1]))
    
    //Label
    min := round(min * 100) / 100
    labeltext = "Drawdown: " + tostring(min) + "%"
    var label la = na
    label.delete(la)
    tc = min > -100 ? color.white : color.red
    osx = timenow + round(change(time)*10)
    osy = highest(100)