src0 = close, len0 = input(13, minval=1, title="EMA 1")
ema0 = ema(src0, len0)
direction = rising(ema0, 2) ? +1 : falling(ema0, 2) ? -1 : 0
plot_color = direction > 0  ? lime: direction < 0 ? red : na
plot(ema0, title="EMA", style=line, linewidth=1, color = plot_color)
//--------------------Trend colour ema 2------------------------------------------------//
src02 = close, len02 = input(21, minval=1, title="EMA 2")
ema02 = ema(src02, len02)
direction2 = rising(ema02, 2) ? +1 : falling(ema02, 2) ? -1 : 0
plot_color2 = direction2 > 0  ? lime: direction2 < 0 ? red : na
plot(ema02, title="EMA Signal 2", style=line, linewidth=1, color = plot_color2)
//
//--Modified vyacheslav.shindin-------------------------------------------------//           Signal 1
//Configured ema signal output
fast = input(5, minval=1, title="Signal Generator")
slow = input(8, minval=1)
vh1 = ema(highest(avg(low, close), fast), 5)
vl1 = ema(lowest(avg(high, close), slow), 8)
//
e_ema1 = ema(close, 1)
e_ema2 = ema(e_ema1, 1)
e_ema3 = ema(e_ema2, 1)
tema = 1 * (e_ema1 - e_ema2) + e_ema3
//
e_e1 = ema(close, 8)
e_e2 = ema(e_e1, 5)
dema = 2 * e_e1 - e_e2
signal = tema > dema ? max(vh1, vl1) : min(vh1, vl1)
is_call = tema > dema and signal > low and (signal-signal[1] > signal[1]-signal[2])
is_put = tema < dema and signal < high and (signal[1]-signal > signal[2]-signal[1])
plotshape(is_call and direction > 0 ? 1 : na, title="BUY ARROW", color=green, text="*BUY*", style=shape.arrowup, location=location.belowbar)
plotshape(is_put and direction < 0 ? -1 : na, title="SELL ARROW", color=red, text="*SELL*", style=shape.arrowdown)

//----------------------------------------------------------------------//
//=============Hull MA//
show_hma = input(true, title="Display Hull MA Set:")
hma_src = input(close, title="Hull MA's Source:")
hma_base_length = input(18, minval=1, title="Hull MA's Base Length:")
hma_length_scalar = input(2, minval=0, title="Hull MA's Length Scalar:")
hullma(src, length)=>wma(2*wma(src, length/2)-wma(src, length), round(sqrt(length)))
plot(not show_hma ? na : hullma(hma_src, hma_base_length+hma_length_scalar*6), color=black, linewidth=3, title="Hull MA 7:")
//===============================================