Scalping BB CCI ROC

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © claygrace74

//@version=6
indicator("Scalping BB CCI ROC", shorttitle="Scalp", overlay=true)

// ==================== Bollinger Band Settings ====================
var bb_group = "Bollinger Bands"
bb_length = input.int(20, "BB Length", minval=5, group=bb_group)
bb_std    = input.float(2.0, "BB StdDev", minval=0.5, step=0.5, group=bb_group)

// ==================== Oscillator Settings ====================
var osc_group = "Oscillator Settings"
cci_length = input.int(14, "CCI Length", minval=1, group=osc_group)
cci_level  = input.int(100, "CCI OB/OS Threshold", minval=50, group=osc_group)
roc_length = input.int(9, "ROC Length", minval=1, group=osc_group)
roc_level  = input.float(1.0, "ROC Threshold", minval=0.1, step=0.1, group=osc_group)

// ==================== Display Settings ====================
var disp_group = "Display Settings"
i_showSignals = input.bool(true, "Show Entry Signals", group=disp_group)
i_showBB      = input.bool(true, "Show Bollinger Bands", group=disp_group)
i_showSqueeze = input.bool(true, "Show BB Squeeze", group=disp_group)

// ==================================================================================
// Core Calculations
// ==================================================================================
ma       = ta.sma(close, bb_length)
bb_width = ta.stdev(close, bb_length) * bb_std
bb_upper = ma + bb_width
bb_lower = ma - bb_width
bb_pct   = (close - bb_lower) / (bb_upper - bb_lower)

cci = ta.cci(close, cci_length)
roc = ta.roc(close, roc_length)

// Entry signals — price at BB extreme + CCI extreme + ROC extreme
long_signal  = close < bb_lower and cci < -cci_level and roc < -roc_level
short_signal = close > bb_upper and cci > cci_level and roc > roc_level

// BB squeeze detection (volatility contraction)
bbWidth   = (bb_upper - bb_lower) / ma
avgBBWidth = ta.sma(bbWidth, 50)
squeeze   = bbWidth < avgBBWidth * 0.75

// ==================================================================================
// Plots
// ==================================================================================
pUpper = plot(i_showBB ? bb_upper : na, "BB Upper", color=color.new(color.red, 30), linewidth=1)
pMA    = plot(i_showBB ? ma : na, "BB Mid", color=color.new(color.blue, 30), linewidth=1)
pLower = plot(i_showBB ? bb_lower : na, "BB Lower", color=color.new(color.green, 30), linewidth=1)

// BB fill — color by where price sits in the bands
fillColor = bb_pct > 0.8 ? color.new(color.red, 85) : bb_pct < 0.2 ? color.new(color.green, 85) : color.new(color.gray, 92)
fill(pUpper, pLower, color=i_showBB ? fillColor : color(na), title="BB Fill")

// Entry signals
plotshape(i_showSignals and long_signal,  style=shape.triangleup,   location=location.belowbar, color=color.green, text="Scalp L", textcolor=color.green, size=size.small, title="Scalp Long")
plotshape(i_showSignals and short_signal, style=shape.triangledown, location=location.abovebar, color=color.red,   text="Scalp S", textcolor=color.red,   size=size.small, title="Scalp Short")

// Squeeze detection
bgcolor(i_showSqueeze and squeeze ? color.new(color.yellow, 92) : na, title="BB Squeeze")
plotshape(i_showSqueeze and squeeze and not squeeze[1], style=shape.diamond, location=location.bottom, color=color.new(color.yellow, 0), text="Squeeze", textcolor=color.yellow, size=size.tiny, title="Squeeze Start")

// Signal background
bgcolor(long_signal ? color.new(color.green, 90) : short_signal ? color.new(color.red, 90) : na, title="Signal BG")

// ==================================================================================
// Alert Conditions
// ==================================================================================
alertcondition(long_signal,                "Scalp Long Signal",  "BB lower + CCI oversold + ROC negative")
alertcondition(short_signal,               "Scalp Short Signal", "BB upper + CCI overbought + ROC positive")
alertcondition(squeeze and not squeeze[1], "BB Squeeze Start",   "Bollinger Band squeeze detected — low volatility")
alertcondition(not squeeze and squeeze[1], "BB Squeeze Release",  "Bollinger Band squeeze released — breakout likely")