Nithin's LQ Sweep

//version=6
indicator("Liquidity Sweep Zones (HTF -> LTF)", overlay=true, max_boxes_count=200, max_labels_count=500)

// ----------------- Inputs -----------------
htf_tf = input.timeframe("240", "Structure Timeframe (HTF) - example: 240=4H")
pivot_left = input.int(3, "Pivot Left", minval=1)
pivot_right = input.int(1, "Pivot Right", minval=1)
min_wick_pts = input.float(0.0, "Min sweep wick size (points)", step=0.1)
zone_width = input.int(80, "Zone width (bars to the right)", minval=1)
show_struct = input.bool(true, "Show HTF structure level")
show_labels = input.bool(true, "Show sweep labels")
alpha_fill = input.int(78, "Zone fill transparency (0-255)", minval=0, maxval=255)

// ----------------- HTF Pivot (structure) -----------------
// request HTF pivots (these return series aligned to LTF bars)
htf_pH = request.security(syminfo.tickerid, htf_tf, ta.pivothigh(high, pivot_left, pivot_right), barmerge.gaps_off, barmerge.lookahead_off)
htf_pL = request.security(syminfo.tickerid, htf_tf, ta.pivotlow(low, pivot_left, pivot_right), barmerge.gaps_off, barmerge.lookahead_off)

// Keep latest non-na HTF pivot levels
var float lastHTFHigh = na
var float lastHTFLow = na

if not na(htf_pH)
lastHTFHigh := htf_pH
if not na(htf_pL)
lastHTFLow := htf_pL

// Optional: draw HTF levels as lines
var line htfHighLine = na
var line htfLowLine = na
if show_struct
if not na(lastHTFHigh)
if not na(htfHighLine)
line.set_xy1(htfHighLine, bar_index - 500, lastHTFHigh)
line.set_xy2(htfHighLine, bar_index + 1, lastHTFHigh)
else
htfHighLine := line.new(bar_index - 500, lastHTFHigh, bar_index + 1, lastHTFHigh, xloc=xloc.bar_index, extend=extend.none, color=color.new(color.red, 60), width=1)
if not na(lastHTFLow)
if not na(htfLowLine)
line.set_xy1(htfLowLine, bar_index - 500, lastHTFLow)
line.set_xy2(htfLowLine, bar_index + 1, lastHTFLow)
else
htfLowLine := line.new(bar_index - 500, lastHTFLow, bar_index + 1, lastHTFLow, xloc=xloc.bar_index, extend=extend.none, color=color.new(color.green, 70), width=1)

// ----------------- Sweep detection (on current timeframe) -----------------
high_sweep = false
low_sweep = false

// High sweep: price makes a wick above last HTF high, but closes back below that HTF level
if not na(lastHTFHigh)
high_sweep := (high > lastHTFHigh) and (close < lastHTFHigh) and (high - lastHTFHigh >= min_wick_pts)

// Low sweep: price makes a wick below last HTF low, but closes back above that HTF level
if not na(lastHTFLow)
low_sweep := (low < lastHTFLow) and (close > lastHTFLow) and (lastHTFLow - low >= min_wick_pts)

// ----------------- Create red zone rectangles -----------------
var array<box> boxes = array.new<box>()

// Function to create a box and push to array; removes oldest if > max
f_newBox(_x1, _y1, _x2, _y2, _fillColor, _borderColor) =>
b = box.new(_x1, _y1, _x2, _y2, xloc=xloc.bar_index, border_width=1, bgcolor=_fillColor, border_color=_borderColor)
array.push(boxes, b)
// keep reasonable number of boxes
maxBoxes = 200
if array.size(boxes) > maxBoxes
old = array.shift(boxes)
box.delete(old)
b

if high_sweep
topY = math.max(high, lastHTFHigh)
bottomY = lastHTFHigh
// create box from the HTF level to the wick high
col = color.new(color.red, alpha_fill)
bord = color.new(color.red, 40)
f_newBox(bar_index - 0, topY, bar_index + zone_width, bottomY, col, bord)
if show_labels
label.new(bar_index, high, "High Sweep", style=label.style_label_down, textcolor=color.white, color=color.new(color.red, 0), size=size.tiny)

if low_sweep
bottomY = math.min(low, lastHTFLow)
topY = lastHTFLow
col = color.new(color.red, alpha_fill) // same red fill as screenshot-red zones
bord = color.new(color.red, 40)
f_newBox(bar_index - 0, topY, bar_index + zone_width, bottomY, col, bord)
if show_labels
label.new(bar_index, low, "Low Sweep", style=label.style_label_up, textcolor=color.white, color=color.new(color.red, 0), size=size.tiny)

// Visual sweep markers (optional small shapes)
plotshape(high_sweep, title="High Sweep marker", style=shape.triangledown, location=location.abovebar, size=size.tiny, color=color.red)
plotshape(low_sweep, title="Low Sweep marker", style=shape.triangleup, location=location.belowbar, size=size.tiny, color=color.red)

// ----------------- Info panel -----------------
var table info = table.new(position.top_right, 1, 1)
if barstate.islast
table.cell(info, 0, 0, "HTF: " + htf_tf + " | Pivot L/R: " + str.tostring(pivot_left) + "/" + str.tostring(pivot_right), text_color=color.white, bgcolor=color.new(color.blue, 85))