setup_9_2.pine

//@version=4
strategy("Setup 9.2 - Larry Willians", overlay=true)

ema8 = ema(close, input(8))
ema9 = ema(close, input(9))
ema13 = sma(close, input(13))
ema54 = sma(close, input(54))
ema200 = sma(close, input(200))
sma20 = sma(close, input(20))

plot(ema9, color=color.red)
plot(sma20)

var INF = 9999999.9
var position = false
var active = false
var buy_price = INF
var stop_price = 0.0

if (ema9[0] < ema9[1] and active)
    buy_price := INF
    stop_price := 0.0
    active := false
    position := false

if (not position and close < low[1] and ema9[0] > ema9[1])
    buy_price := high[0]
    stop_price := low[0]
    active := true

if (position and low < stop_price)
    strategy.close("long", comment="stop")
    buy_price := INF
    stop_price := 0.0
    active := false
    position := false
    
if (position and close < sma20)
    strategy.close("long", comment="sma sell")
    buy_price := INF
    stop_price := 0.0
    active := false
    position := false

if (active and high > buy_price and ema9 > sma20)
    strategy.entry("long", strategy.long)
    stop_price := min(low[0], stop_price)
    position := true
    active := false
else
    if(active)
        buy_price := min(high[0], buy_price)
        stop_price := min(low[0], stop_price)