[RS]Leading Momentum Oscilator V0

study("[RS]Leading Momentum Oscilator V0")
ma_length = input(title='ma length', type=integer, defval=5)
signal_length = input(title='signal length', type=integer, defval=21)
offset = input(title='offset', type=integer, defval=8)

leading_cd(_src, ma_l, signal_l, offset_l)=>
    _ma = sma(_src, ma_l)
    _signal = sma(_src, signal_l)
    _hist = _ma-offset(_signal, offset_l)
    _hist

o = leading_cd(open, ma_length, signal_length, offset)
h = leading_cd(high, ma_length, signal_length, offset)
l = leading_cd(low, ma_length, signal_length, offset)
c = leading_cd(close, ma_length, signal_length, offset)

plotcandle(o, h, l, c, color=c>o?green:c<o?maroon:gray)
hline(0)