Breaker Block

//@version=5
strategy("Breaker Block", overlay=true,
         default_qty_type=strategy.percent_of_equity, default_qty_value=10)

impulseAtr = input.float(1.2, "Impulse ATR")
emaP       = input.int(200, "Trend EMA")

atrVal = ta.atr(14)
emaT   = ta.ema(close, emaP)

bullOB = close[1] < open[1] and (high - low[1]) >= atrVal * impulseAtr and close > high[1]
bearOB = close[1] > open[1] and (high[1] - low) >= atrVal * impulseAtr and close < low[1]

var float bullTop = na, var float bullBot = na, var bool bullBroken = false
var float bearTop = na, var float bearBot = na, var bool bearBroken = false

if bullOB
    bullTop := high[1]
    bullBot := low[1]
    bullBroken := false

if bearOB
    bearTop := high[1]
    bearBot := low[1]
    bearBroken := false

if not na(bullBot) and close < bullBot
    bullBroken := true
if not na(bearTop) and close > bearTop
    bearBroken := true

// Failed bullish OB -> short on retest
shortBreaker = bullBroken and high >= bullBot and low <= bullTop and close < emaT
// Failed bearish OB -> long on retest
longBreaker  = bearBroken and high >= bearBot and low <= bearTop and close > emaT

if longBreaker and strategy.position_size == 0
    sl   = bearBot - 0.5 * atrVal
    entry= (bearTop + bearBot) / 2
    risk = entry - sl
    strategy.entry("Breaker L", strategy.long, limit=entry)
    strategy.exit("X", "Breaker L", stop=sl, limit=entry + risk * 3)

if shortBreaker and strategy.position_size == 0
    sl   = bullTop + 0.5 * atrVal
    entry= (bullTop + bullBot) / 2
    risk = sl - entry
    strategy.entry("Breaker S", strategy.short, limit=entry)
    strategy.exit("X", "Breaker S", stop=sl, limit=entry - risk * 3)

plotshape(longBreaker,  "BL", shape.triangleup,   location.belowbar, color.aqua)
plotshape(shortBreaker, "BS", shape.triangledown, location.abovebar, color.fuchsia)