Segnali di Breakout e Retest – FloAlgo

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//--------------------------------------------------------//
//PRC_Breakout and Retest Signals (by FloAlgo)
//version = 0
//18.05.2026
//Iván González @ www.prorealcode.com
//Sharing ProRealTime knowledge
//--------------------------------------------------------//
// Overlay indicator. Builds demand/supply zones on swing
// pivots and fires a signal when price sweeps the zone
// wick (liquidity) and closes back inside the candle body
// (breakout & retest = liquidity sweep + reclaim).
//--------------------------------------------------------//
//-----Inputs---------------------------------------------//
swingLen   = 10        // pivot length (left = right)
maxLife    = 400       // max bars a zone stays active
maxZones   = 5         // max zones per side (1..10)
showTarget = 1         // 1 = draw measured-move target
//--------------------------------------------------------//
MAXZ = 10              // physical slots per side (>= maxZones)
//--------------------------------------------------------//
bullSig = 0
bearSig = 0
L   = swingLen
win = 2 * L + 1
//-----Centred pivot detection (no repaint)---------------//
isPL = 0
isPH = 0
IF barindex >= win THEN
   IF low[L] = LOWEST[win](low) THEN
      isPL = 1
   ENDIF
   IF high[L] = HIGHEST[win](high) THEN
      isPH = 1
   ENDIF
ENDIF
pvBar  = barindex[L]
pvBHi  = MAX(open[L], close[L])
pvBLo  = MIN(open[L], close[L])
pvLow  = low[L]
pvHigh = high[L]
//--------------------------------------------------------//
//-----Spawn demand zone (on swing low)-------------------//
IF isPL = 1 AND pvBHi > pvLow THEN
   isDup = 0
   FOR i = 0 TO MAXZ - 1 DO
      IF $dAct[i] = 1 AND pvLow >= $dExt[i] AND pvLow <= $dBHi[i] THEN
         isDup = 1
      ENDIF
   NEXT
   IF isDup = 0 THEN
      FOR i = 0 TO MAXZ - 1 DO
         IF $sAct[i] = 1 AND pvBHi >= $sBLo[i] AND pvLow <= $sExt[i] THEN
            isDup = 1
         ENDIF
      NEXT
   ENDIF
   IF isDup = 0 THEN
      slot    = -1
      cnt     = 0
      oldIdx  = -1
      oldBorn = 0
      FOR i = 0 TO MAXZ - 1 DO
         IF $dAct[i] = 1 THEN
            cnt = cnt + 1
            IF oldIdx = -1 OR $dBorn[i] < oldBorn THEN
               oldBorn = $dBorn[i]
               oldIdx  = i
            ENDIF
         ELSE
            IF slot = -1 THEN
               slot = i
            ENDIF
         ENDIF
      NEXT
      IF cnt >= maxZones THEN
         slot = oldIdx
      ENDIF
      IF slot = -1 THEN
         slot = oldIdx
      ENDIF
      $dAct[slot]  = 1
      $dExt[slot]  = pvLow
      $dBHi[slot]  = pvBHi
      $dBLo[slot]  = pvBLo
      $dBorn[slot] = pvBar
   ENDIF
ENDIF
//-----Spawn supply zone (on swing high)------------------//
IF isPH = 1 AND pvHigh > pvBLo THEN
   isDup = 0
   FOR i = 0 TO MAXZ - 1 DO
      IF $sAct[i] = 1 AND pvHigh <= $sExt[i] AND pvHigh >= $sBLo[i] THEN
         isDup = 1
      ENDIF
   NEXT
   IF isDup = 0 THEN
      FOR i = 0 TO MAXZ - 1 DO
         IF $dAct[i] = 1 AND pvHigh >= $dExt[i] AND pvBLo <= $dBHi[i] THEN
            isDup = 1
         ENDIF
      NEXT
   ENDIF
   IF isDup = 0 THEN
      slot    = -1
      cnt     = 0
      oldIdx  = -1
      oldBorn = 0
      FOR i = 0 TO MAXZ - 1 DO
         IF $sAct[i] = 1 THEN
            cnt = cnt + 1
            IF oldIdx = -1 OR $sBorn[i] < oldBorn THEN
               oldBorn = $sBorn[i]
               oldIdx  = i
            ENDIF
         ELSE
            IF slot = -1 THEN
               slot = i
            ENDIF
         ENDIF
      NEXT
      IF cnt >= maxZones THEN
         slot = oldIdx
      ENDIF
      IF slot = -1 THEN
         slot = oldIdx
      ENDIF
      $sAct[slot]  = 1
      $sExt[slot]  = pvHigh
      $sBHi[slot]  = pvHigh
      $sBLo[slot]  = pvBLo
      $sBorn[slot] = pvBar
   ENDIF
ENDIF
//--------------------------------------------------------//
//-----Process demand zones-------------------------------//
FOR i = 0 TO MAXZ - 1 DO
   IF $dAct[i] = 1 THEN
      IF barindex > $dBorn[i] + maxLife THEN
         $dAct[i] = 0
      ELSIF close < $dExt[i] THEN
         $dAct[i] = 0
      ELSIF low < $dExt[i] AND close > $dBHi[i] THEN
         bullSig = 1
         tgtB = close + (close - $dExt[i])
         IF showTarget = 1 THEN
            DRAWSEGMENT(barindex, close, barindex + 40, tgtB) STYLE(dottedline) COLOURED(0, 193, 118)
         ENDIF
         $dAct[i] = 0
      ENDIF
   ENDIF
NEXT
//-----Process supply zones-------------------------------//
FOR i = 0 TO MAXZ - 1 DO
   IF $sAct[i] = 1 THEN
      IF barindex > $sBorn[i] + maxLife THEN
         $sAct[i] = 0
      ELSIF close > $sExt[i] THEN
         $sAct[i] = 0
      ELSIF high > $sExt[i] AND close < $sBLo[i] THEN
         bearSig = 1
         tgtS = close - ($sExt[i] - close)
         IF showTarget = 1 THEN
            DRAWSEGMENT(barindex, close, barindex + 40, tgtS) STYLE(dottedline) COLOURED(255, 61, 61)
         ENDIF
         $sAct[i] = 0
      ENDIF
   ENDIF
NEXT
//--------------------------------------------------------//
//-----Signals (historical, one per event)----------------//
atr = averagetruerange[14]
IF bullSig = 1 THEN
   DRAWTEXT("▲", barindex, low - atr * 0.5) COLOURED(0, 193, 118)
ENDIF
IF bearSig = 1 THEN
   DRAWTEXT("▼", barindex, high + atr * 0.5) COLOURED(255, 61, 61)
ENDIF
//-----Active zones (last bar only)-----------------------//
IF islastbarupdate THEN
   FOR i = 0 TO MAXZ - 1 DO
      IF $dAct[i] = 1 THEN
         rEndD = MIN(barindex, $dBorn[i] + maxLife)
         DRAWRECTANGLE($dBorn[i], $dBHi[i], rEndD, $dExt[i]) COLOURED(0, 193, 118, 0) FILLCOLOR(0, 193, 118, 45)
         DRAWSEGMENT($dBorn[i], $dExt[i], rEndD, $dExt[i]) COLOURED(0, 193, 118)
      ENDIF
      IF $sAct[i] = 1 THEN
         rEndS = MIN(barindex, $sBorn[i] + maxLife)
         DRAWRECTANGLE($sBorn[i], $sExt[i], rEndS, $sBLo[i]) COLOURED(255, 61, 61, 0) FILLCOLOR(255, 61, 61, 45)
         DRAWSEGMENT($sBorn[i], $sExt[i], rEndS, $sExt[i]) COLOURED(255, 61, 61)
      ENDIF
   NEXT
ENDIF
//--------------------------------------------------------//
RETURN

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