MACD অসিলেটর এবং EMA ক্রসওভার কৌশল

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © SoftKill21

//@version=4
strategy("My Script", overlay=true)

//heiking ashi calculation
UseHAcandles    = input(false, title="Use Heikin Ashi Candles in Algo Calculations")
//
// === /INPUTS ===

// === BASE FUNCTIONS ===

haClose = UseHAcandles ? security(heikinashi(syminfo.tickerid), timeframe.period, close) : close
haOpen  = UseHAcandles ? security(heikinashi(syminfo.tickerid), timeframe.period, open) : open
haHigh  = UseHAcandles ? security(heikinashi(syminfo.tickerid), timeframe.period, high) : high
haLow   = UseHAcandles ? security(heikinashi(syminfo.tickerid), timeframe.period, low) : low

//timecondition
fromDay = input(defval = 1, title = "From Day", minval = 1, maxval = 31)
fromMonth = input(defval = 1, title = "From Month", minval = 1, maxval = 12)
fromYear = input(defval = 2020, title = "From Year", minval = 1970)
 //monday and session 
 
// To Date Inputs
toDay = input(defval = 31, title = "To Day", minval = 1, maxval = 31)
toMonth = input(defval = 12, title = "To Month", minval = 1, maxval = 12)
toYear = input(defval = 2021, title = "To Year", minval = 1970)

startDate = timestamp(fromYear, fromMonth, fromDay, 00, 00)
finishDate = timestamp(toYear, toMonth, toDay, 00, 00)
time_cond = true

//ema data  -- moving average
len = input(9, minval=1, title="Length")
src = input(hl2, title="Source")
out = ema(src, len)
//plot(out, title="EMA", color=color.blue)

//histogram
fast_length = input(title="Fast Length", type=input.integer, defval=12)
slow_length = input(title="Slow Length", type=input.integer, defval=26)
signal_length = input(title="Signal Smoothing", type=input.integer, minval = 1, maxval = 50, defval = 9)
sma_source = input(title="Simple MA (Oscillator)", type=input.bool, defval=false)
sma_signal = input(title="Simple MA (Signal Line)", type=input.bool, defval=false)

// Calculating
fast_ma = sma_source ? sma(src, fast_length) : ema(src, fast_length)
slow_ma = sma_source ? sma(src, slow_length) : ema(src, slow_length)
macd = fast_ma - slow_ma
signal = sma_signal ? sma(macd, signal_length) : ema(macd, signal_length)
hist = macd - signal


//main variables to apply conditions are going to be out(moving avg) and hist(macd)

long = haClose > out and haClose > haClose[1] and out > out[1] and hist> 0 and hist[1] < 0 and time_cond
short = haClose < out and haClose < haClose[1] and out < out[1] and hist < 0 and hist[1] > 0 and time_cond

//limit to 1 entry
var longOpeneda = false
var shortOpeneda = false
var int timeOfBuya = na



longCondition= long and not longOpeneda 

if longCondition
    longOpeneda := true
    timeOfBuya := time


longExitSignala = short
exitLongCondition = longOpeneda[1] and longExitSignala

if exitLongCondition
    longOpeneda := false
    timeOfBuya := na


plotshape(longCondition, style=shape.labelup, location=location.belowbar, color=color.green, size=size.tiny, title="BUY", text="BUY", textcolor=color.white)
plotshape(exitLongCondition, style=shape.labeldown, location=location.abovebar, color=color.red, size=size.tiny, title="SELL", text="SELL", textcolor=color.white)

//automatization

longEntry= input(true)
shortEntry=input(false)

if(longEntry)
    strategy.entry("long",strategy.long,when=longCondition)
    strategy.close("long",when=exitLongCondition)

if(shortEntry)
    strategy.entry("short",strategy.short,when=exitLongCondition)
    strategy.close("short",when=longCondition)