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 //@version=5
indicator("KAMA + ATR Breakout Channel", overlay=true)

// --- KAMA Inputs ---
kLength = input.int(14, "KAMA Lookback", group="KAMA Settings")
kFast   = input.int(2,  "KAMA Fast EMA", group="KAMA Settings")
kSlow   = input.int(30, "KAMA Slow EMA", group="KAMA Settings")

// --- Channel Inputs ---
atrLen  = input.int(14,  "ATR Length", group="Channel Settings")
atrMult = input.float(2.0, "ATR Multiplier", step=0.1, group="Channel Settings")

// ==========================================
// KAMA CALCULATION
// ==========================================
direction  = math.abs(close - close[kLength])
volatility = math.sum(math.abs(close - close[1]), kLength)
er         = volatility != 0 ? direction / volatility : 0

fastAlpha = 2 / (kFast + 1)
slowAlpha = 2 / (kSlow + 1)
sc        = math.pow((er * (fastAlpha - slowAlpha)) + slowAlpha, 2)

var float kama = na
kama := na(kama[1]) ? close : kama[1] + sc * (close - kama[1])

// ==========================================
// ATR BANDS CALCULATION
// ==========================================
// Using built-in ATR for pure volatility distance
currentAtr = ta.atr(atrLen)

upperBand = kama + (currentAtr * atrMult)
lowerBand = kama - (currentAtr * atrMult)

// ==========================================
// PLOTTING & SIGNALS
// ==========================================
// Draw KAMA and Channels
plot(kama, color=color.rgb(41, 98, 255), linewidth=2, title="KAMA Base")
uPlot = plot(upperBand, color=color.new(color.gray, 50), title="Upper ATR Band")
lPlot = plot(lowerBand, color=color.new(color.gray, 50), title="Lower ATR Band")
fill(uPlot, lPlot, color=color.new(color.rgb(41, 98, 255), 92), title="Channel Fill")

// Breakout Logic (Close outside the bands)
longBreakout  = ta.crossover(close, upperBand)
shortBreakout = ta.crossunder(close, lowerBand)

// Paint signals on the chart
plotshape(longBreakout,  title="Long Breakout",  style=shape.triangleup,   location=location.belowbar, color=color.rgb(0, 230, 119), size=size.small)
plotshape(shortBreakout, title="Short Breakout", style=shape.triangledown, location=location.abovebar, color=color.rgb(255, 82, 82), size=size.small)

Code: Select all

 //@version=5
indicator("KAMA + ATR Breakout & Trailing Stop", overlay=true)

// --- KAMA Inputs ---
kLength = input.int(14, "KAMA Lookback", group="KAMA Settings")
kFast   = input.int(2,  "KAMA Fast EMA", group="KAMA Settings")
kSlow   = input.int(30, "KAMA Slow EMA", group="KAMA Settings")

// --- Breakout Channel Inputs ---
atrLen  = input.int(14,  "ATR Length", group="Channel Settings")
atrMult = input.float(2.0, "Entry Channel Multiplier", step=0.1, group="Channel Settings")

// --- Trailing Stop Inputs ---
trailMult = input.float(1.5, "Trailing Stop Multiplier", step=0.1, group="Trailing Stop Settings", tooltip="Usually tighter than the entry multiplier to protect profits.")

// ==========================================
// 1. KAMA & ATR CALCULATION
// ==========================================
direction  = math.abs(close - close[kLength])
volatility = math.sum(math.abs(close - close[1]), kLength)
er         = volatility != 0 ? direction / volatility : 0

sc = math.pow((er * (2/(kFast+1) - 2/(kSlow+1))) + 2/(kSlow+1), 2)

var float kama = na
kama := na(kama[1]) ? close : kama[1] + sc * (close - kama[1])

currentAtr = ta.atr(atrLen)
upperBand  = kama + (currentAtr * atrMult)
lowerBand  = kama - (currentAtr * atrMult)

// ==========================================
// 2. STATE MACHINE & TRAILING STOP LOGIC
// ==========================================
var int   position  = 0   // 1 = Long, -1 = Short, 0 = Flat
var float trailStop = na  // Holds the current stop level

longBreakout  = ta.crossover(close, upperBand)
shortBreakout = ta.crossunder(close, lowerBand)

// Entry Logic
if position == 0
    if longBreakout
        position  := 1
        trailStop := kama - (currentAtr * trailMult)
    else if shortBreakout
        position  := -1
        trailStop := kama + (currentAtr * trailMult)

// Trailing Logic (Ratchet) & Exit Logic
if position == 1
    // Calculate new stop and ratchet UP only
    newStop   = kama - (currentAtr * trailMult)
    trailStop := math.max(trailStop, newStop)
    
    // Exit if price crosses below the ratcheted stop
    if close < trailStop
        position  := 0
        trailStop := na

if position == -1
    // Calculate new stop and ratchet DOWN only
    newStop   = kama + (currentAtr * trailMult)
    trailStop := math.min(trailStop, newStop)
    
    // Exit if price crosses above the ratcheted stop
    if close > trailStop
        position  := 0
        trailStop := na

// ==========================================
// 3. PLOTTING
// ==========================================
// Base KAMA and Channel
plot(kama, color=color.rgb(41, 98, 255), title="KAMA Base")
uPlot = plot(upperBand, color=color.new(color.gray, 70), title="Upper ATR Band")
lPlot = plot(lowerBand, color=color.new(color.gray, 70), title="Lower ATR Band")
fill(uPlot, lPlot, color=color.new(color.rgb(41, 98, 255), 95), title="Channel Fill")

// Entry Signals
plotshape(position == 1 and position[1] == 0,  title="Long Entry",  style=shape.triangleup,   location=location.belowbar, color=color.rgb(0, 230, 119), size=size.small)
plotshape(position == -1 and position[1] == 0, title="Short Entry", style=shape.triangledown, location=location.abovebar, color=color.rgb(255, 82, 82), size=size.small)

// Exit Signals
plotshape(position == 0 and position[1] == 1,  title="Long Exit",  style=shape.xcross, location=location.abovebar, color=color.rgb(255, 204, 0), size=size.small)
plotshape(position == 0 and position[1] == -1, title="Short Exit", style=shape.xcross, location=location.belowbar, color=color.rgb(255, 204, 0), size=size.small)

// Trailing Stop Line (Only plots when in a trade)
plot(position != 0 ? trailStop : na, color=position == 1 ? color.rgb(0, 230, 119) : color.rgb(255, 82, 82), style=plot.style_circles, linewidth=2, title="Trailing Stop")