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//@version=3

study(title="Big Snapper Alerts R3.0 by JustUncleL", shorttitle="SNAPPER", overlay=true )

// Author: JustUncleL

// Date: 19-Oct-2017

// Version: R3.0

// Description:

// This is a diversified Binary Option or Scalping Alert indicator originally designed for

// lower Time Frame Trend or Swing trading. Although you will find it a useful tool for

// higher time frames as well.

// The Alerts are generated by the changing direction of the ColouredMA (HullMA by default,

// also SSMA works well) or optionally by fastMA crossing ColouredMA. Then you have the choice of

// selecting the Directional filtering on these signals or a Bollinger Outside IN swing

// reversal filter.

// The filters include:

// Type 1 - The three MAs (EMAs 21,55,89 by default) in various combinations or by themselves.

// When only one directional MA selected then direction filter is given by ColouredMA

// above(up)/below(down) selected MA.

// If more than one MA selected the direction is given by MAs being in correct order

// for trend direction.

// Type 2 - The SuperTrend direction is used to filter ColouredMA signals.

// Type 3 - Bollinger Band Outside In is used to filter ColouredMA for swing reversals.

// Type 4 - No directional filtering, all signals from the ColouredMA are shown.

// Type 5 - Signals given by FastMA (eg length 7) crossing the ColouredMA (eg length 14),

// suggested FastMA should same type as ColouredMA (eq HullMA or SSMA) and

// no less than half the length.

// Notes: - Each Type can be combined with most other types to form more complex filtration.

// - Alerts can also be disabled completely if you just want one indicator with

// one colouredMA and/or 3xMAs and/or Bollinger Bands and/or SuperTrend

// painted on the chart.

// Warning- Be aware that combining Bollinger OutsideIn swing filter and a directional filter

// can be counter productive as they are opposites. So careful consideration is needed

// when combining Bollinger OutsideIn with any of the directional filters.

// Hints: - For Binary Options try ColouredMA = HullMA(13) or HullMA(8) with Type 2 or 3 Filter.

// - When using Trend filters SuperTrend and/or 3xMA Trend, you will find if price reverses

// and breaks back through the Big Fat Signal line, then this can be a good reversal trade.

// - Try using SSMA instead of HullMA for signal line, it is similar to Hull but remains

// smoother at low lengths and works well with the MA Cross signals.

// Mofidifications:

// R0.# : Original alpha unpublished versions.

// R1.# : Original beta unpublished versions.

// R2.0 : Original Published version.

// R3.0 : - Added new Signal Type 5: Signals come from Fast MA crossing slower ColouredMA.

// - Replaced OutsideIn Coloured MA signals with those generated from the MA cross.

// - Added selectable colours for Big fat marker, the big arrows colours must still

// be selected in the "Style" parameters of the script.

// References:

// Some explanation about the what Hull Moving averageis and ideas of how the generated in

// Snapper can be used.

// - https://tradingsim.com/blog/hull-ma/

// - http://forextradingstrategies4u.com/hull-moving-average-forex-trading-strategy/

// Some Code borrowed from:

// - "Scalp Jockey - MTF MA Cross Visual Strategizer by JayRogers"

// Inspiration from @vdubus

// -----------------------------------------------------------------------------

// This program is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// any later version.

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU General Public License for more details.

// The GNU General Public License can be found here

// <http://www.gnu.org/licenses/&gt;.

// -----------------------------------------------------------------------------

// === INPUTS ===

// Coloured MA - type, length, source

typeColoured = input(defval="HullMA", title="Coloured MA Type: ", options=["SMA", "EMA", "WMA", "VWMA", "SMMA", "DEMA", "TEMA", "HullMA", "ZEMA", "TMA", "SSMA"], type=string)

lenColoured = input(defval=18, title="Coloured MA - Length", minval=1)

srcColoured = input(close,title="Coloured MA - Source")

// Fast MA - type, length

typeFast = input(defval="EMA", title="Fast MA Type: ", options=["SMA", "EMA", "WMA", "VWMA", "SMMA", "DEMA", "TEMA", "HullMA", "ZEMA", "TMA", "SSMA"], type=string)

lenFast = input(defval=21, title="Fast MA - Length", minval=1)

// Medium MA - type, length

typeMedium = input(defval="EMA", title="Medium MA Type: ", options=["SMA", "EMA", "WMA", "VWMA", "SMMA", "DEMA", "TEMA", "HullMA", "ZEMA", "TMA", "SSMA"], type=string)

lenMedium = input(defval=55, title="Medium MA - Length", minval=1)

// Slow MA - type, length

typeSlow = input(defval="EMA", title="Slow MA Type: ", options=["SMA", "EMA", "WMA", "VWMA", "SMMA", "DEMA", "TEMA", "HullMA", "ZEMA", "TMA", "SSMA"], type=string)

lenSlow = input(defval=89, title="Slow MA Length", minval=1)

// 3xMA source

ma_src = input(close,title="3xMA and Bollinger Source")

filterOption = input("SuperTrend",title="Signal Filter Option : ",

options=["3xMATrend","SuperTrend","SuperTrend+3xMA","ColouredMA","No Alerts","MACross","MACross+ST","MACross+3xMA",

"OutsideIn:MACross","OutsideIn:MACross+ST","OutsideIn:MACross+3xMA"])

hideMALines = input(false)

hideSuperTrend = input(true)

hideBollingerBands = input(true)

hideTrendDirection = input(true)

disableFastMAFilter = input(false)

disableMediumMAFilter = input(false)

disableSlowMAFilter = input(false)

uKC = false // input(false,title="Use Keltner Channel (KC) instead of Bollinger")

bbLength = input(20,minval=2,step=1,title="Bollinge Bands Length")

bbStddev = input(2.0,minval=0.5,step=0.1,title="Bollinger Bands StdDevs")

oiLength = input(8, title="Bollinger Outside In LookBack")

SFactor = input(3.618, minval=1.0, title="SuperTrend Factor")

SPd = input(5, minval=1, title="SuperTrend Length")

buyColour_ = input("Green", title="BUY Marker Colour: ",options=["Green","Lime","Aqua","DodgerBlue","Gray","Yellow"])

sellColour_ = input("Maroon",title="SELL Marker Colour: ",options=[ "Maroon","Red","Fuchsia","Blue","Black","Orange"])

// --- Allocate Correct Filtering Choice

// Can only be one choice

uSuperTrendFilter = filterOption == "SuperTrend" ? true : false

u3xMATrendFilter = filterOption == "3xMATrend"? true : false

uBothTrendFilters = filterOption == "SuperTrend+3xMA"? true : false

//uOIFilter = filterOption == "OutsideIn:ClrMA" ? true : false

uOIMACrossFilter = filterOption == "OutsideIn:MACross" ? true : false

uOI3xMAFilter = filterOption == "OutsideIn:MACross+3xMA" ? true : false

uOISTFilter = filterOption == "OutsideIn:MACross+ST" ? true : false

uMACrossFilter = filterOption == "MACross" ? true : false

uMACrossSTFilter = filterOption == "MACross+ST" ? true : false

uMACross3xMAFilter = filterOption == "MACross+3xMA" ? true : false

// unless all 3 MAs disabled.

disable3xMAFilter = disableFastMAFilter and disableMediumMAFilter and disableSlowMAFilter

u3xMATrendFilter := disable3xMAFilter? false : u3xMATrendFilter

// if no filters selected then must be "No Filters" option

disableAllFilters = u3xMATrendFilter or uSuperTrendFilter or uBothTrendFilters or uOI3xMAFilter or uOISTFilter or

uOIMACrossFilter or uMACrossFilter or uMACrossSTFilter or uMACross3xMAFilter? false : true

// if "No Alerts" option selected, then disable all selections

disableAllFilters := filterOption == "No Alerts"? false : disableAllFilters

uSuperTrendFilter := filterOption == "No Alerts"? false : uSuperTrendFilter

u3xMATrendFilter := filterOption == "No Alerts"? false : u3xMATrendFilter

uBothTrendFilters := filterOption == "No Alerts"? false : uBothTrendFilters

//uOIFilter := filterOption == "No Alerts"? false : uOIFilter

uOIMACrossFilter := filterOption == "No Alerts"? false : uOIMACrossFilter

uOI3xMAFilter := filterOption == "No Alerts"? false : uOI3xMAFilter

uOISTFilter := filterOption == "No Alerts"? false : uOISTFilter

uMACrossFilter := filterOption == "No Alerts"? false : uMACrossFilter

uMACrossSTFilter := filterOption == "No Alerts"? false : uMACrossSTFilter

uMACross3xMAFilter := filterOption == "No Alerts"? false : uMACross3xMAFilter

// --- CONSTANTS ---

dodgerblue = #1E90FF

lightcoral = #F08080

buyColour = green // for big Arrows, must be a constant.

sellColour = maroon // for big Arrows

// Colour Selectable for Big Fat Bars.

buyclr = buyColour_=="Lime"?lime: buyColour_=="Aqua"?aqua: buyColour_=="DodgerBlue"?dodgerblue: buyColour_=="Gray"?gray: buyColour_=="Yellow"?yellow:green

sellclr = sellColour_=="Red"?red: sellColour_=="Fuchsia"?fuchsia: sellColour_=="Blue"?blue: sellColour_=="Black"?black: sellColour_=="Orange"?orange: maroon

// === /INPUTS ===

// === FUNCTIONS ===

// Returns MA input selection variant, default to SMA if blank or typo.

variant(type, src, len) =>

v1 = sma(src, len) // Simple

v2 = ema(src, len) // Exponential

v3 = wma(src, len) // Weighted

v4 = vwma(src, len) // Volume Weighted

v5 = 0.0

v5 := na(v5[1]) ? sma(src, len) : (v5[1] * (len - 1) + src) / len // Smoothed

v6 = 2 * v2 - ema(v2, len) // Double Exponential

v7 = 3 * (v2 - ema(v2, len)) + ema(ema(v2, len), len) // Triple Exponential

v8 = wma(2 * wma(src, len / 2) - wma(src, len), round(sqrt(len))) // Hull WMA = (2*WMA (n/2) − WMA (n)), sqrt (n))

v11 = sma(sma(src,len),len) // Triangular

// SuperSmoother filter

a1 = exp(-1.414*3.14159 / len)

b1 = 2*a1*cos(1.414*3.14159 / len)

c2 = b1

c3 = (-a1)*a1

c1 = 1 - c2 - c3

v9 = 0.0

v9 := c1*(src + nz(src[1])) / 2 + c2*nz(v9[1]) + c3*nz(v9[2])

// Zero Lag Exponential

e = ema(v1, len)

v10 = v1+(v1-e)

// return variant, defaults to SMA if input invalid.

type=="EMA"?v2 : type=="WMA"?v3 : type=="VWMA"?v4 : type=="SMMA"?v5 : type=="DEMA"?v6 : type=="TEMA"?v7 : type=="HullMA"?v8 : type=="SSMA"?v9 : type=="ZEMA"?v10 : type=="TMA"? v11: v1

// === /FUNCTIONS ===

// === SERIES VARIABLES ===

// MA's

ma_fast = variant(typeFast, ma_src, lenFast)

ma_medium = variant(typeMedium, ma_src, lenMedium)

ma_slow = variant(typeSlow, ma_src, lenSlow)

ma_coloured = variant(typeColoured, srcColoured, lenColoured)

// Get Direction of Coloured Moving Average

clrdirection = 1

clrdirection := rising(ma_coloured,2) ? 1 : falling(ma_coloured,2)? -1 : nz(clrdirection[1],1)

// get 3xMA trend direction based on selections.

madirection = ma_fast>ma_medium and ma_medium>ma_slow? 1 : ma_fast<ma_medium and ma_medium<ma_slow? -1 : 0

madirection := disableSlowMAFilter? ma_fast>ma_medium? 1 : ma_fast<ma_medium? -1 : 0 : madirection

madirection := disableMediumMAFilter? ma_fast>ma_slow? 1 : ma_fast<ma_slow? -1 : 0 : madirection

madirection := disableFastMAFilter? ma_medium>ma_slow? 1 : ma_medium<ma_slow? -1 : 0 : madirection

madirection := disableFastMAFilter and disableMediumMAFilter? ma_coloured>ma_slow? 1 : -1 : madirection

madirection := disableFastMAFilter and disableSlowMAFilter? ma_coloured>ma_medium? 1 : -1 : madirection

madirection := disableSlowMAFilter and disableMediumMAFilter? ma_coloured>ma_fast? 1 : -1 : madirection

// Supertrend Calculations

SUp=hl2-(SFactor*atr(SPd))

SDn=hl2+(SFactor*atr(SPd))

STrendUp = 0.0

STrendDown = 0.0

STrendUp := close[1]>STrendUp[1]? max(SUp,STrendUp[1]) : SUp

STrendDown := close[1]<STrendDown[1]? min(SDn,STrendDown[1]) : SDn

STrend = 0

STrend := close > STrendDown[1] ? 1: close< STrendUp[1]? -1: nz(STrend[1],1)

Tsl = STrend==1? STrendUp: STrendDown

// Standard Bollinger or KC Bands

basis = sma(ma_src, bbLength)

rangema = sma(tr, bbLength)

dev = uKC? bbStddev*rangema : bbStddev * stdev(ma_src, bbLength)

// Calculate Bollinger or KC Channel

upper = basis + dev

lower = basis - dev

// Lookback for previous highest bar index

noiupper = abs(highestbars(oiLength))

noilower = abs(lowestbars(oiLength))

// ColouredMA OutsideIn

//oiupper = clrdirection<0 and noiupper>0 and highest(oiLength)>upper[noiupper]? 1 : 0

//oilower = clrdirection>0 and noilower>0 and lowest(oiLength)<lower[noilower]? 1 : 0

// MACross OutsideIN

oiMACrossupper = crossunder(ma_fast,ma_coloured) and noiupper>0 and highest(oiLength)>upper[noiupper]? 1 : 0

oiMACrosslower = crossover(ma_fast,ma_coloured) and noilower>0 and lowest(oiLength)<lower[noilower]? 1 : 0

// === /SERIES VARIABLES ===

// === PLOTTING ===

// All the MA's

plot(ma_coloured, title="Coloured MA", color=clrdirection<0?lightcoral:blue, linewidth=3, transp=20)

plot(hideMALines?na:ma_fast, title="Fast MA", color=lime, linewidth=2, transp=20)

plot(hideMALines?na:ma_medium, title="Medium MA", color=red, linewidth=2, transp=10)

plot(hideMALines?na:ma_slow, title="Slow MA", color=gray, linewidth=2, transp=10)

// show 3xMA Trend Direction State.

dcolour = madirection==1?green:madirection==-1?red:yellow

plotshape(hideTrendDirection? na : madirection, title="3xMA Trend Direction", location=location.bottom,style=shape.square, color=dcolour,transp=10)

// SuperTrend

plot(hideSuperTrend?na:Tsl, color = STrend == 1 ? green : maroon, style = line , linewidth = 2,title = "SuperTrend")

// Bollinger Bands

p1=plot(hideBollingerBands?na:upper, title="BB upper", color=dodgerblue, linewidth=1, transp=20)

p2=plot(hideBollingerBands?na:lower, title="BB lower", color=dodgerblue, linewidth=1, transp=20)

fill(p1,p2,color=dodgerblue,transp=96,title="BB fill")

// === /PLOTTING ===

// === ALERTING ===

// 3xMA Filtering

_3xmabuy = 0

_3xmasell = 0

_3xmabuy := clrdirection == 1 and close>ma_fast and madirection==1 ? nz(_3xmabuy[1])+1 : clrdirection == 1 and madirection==1? nz(_3xmabuy[1])>0?nz(_3xmabuy[1])+1 : 0 : 0

_3xmasell := clrdirection ==-1 and close<ma_fast and madirection==-1 ? nz(_3xmasell[1])+1 : clrdirection ==-1 and madirection==-1? nz(_3xmasell[1])>0?nz(_3xmasell[1])+1 : 0 : 0

// SuperTrend Filtering

stbuy = 0

stsell = 0

stbuy := clrdirection == 1 and STrend==1 ? nz(stbuy[1])+1 : 0

stsell := clrdirection ==-1 and STrend==-1 ? nz(stsell[1])+1 : 0

// 3xMA & SuperTrend Filtering

st3xmabuy = 0

st3xmasell = 0

st3xmabuy := (disable3xMAFilter or _3xmabuy>0) and stbuy>0 ? nz(st3xmabuy[1])+1 : 0

st3xmasell := (disable3xMAFilter or _3xmasell>0) and stsell>0 ? nz(st3xmasell[1])+1 : 0

// Bollinger Outside In using ColuredMA direction Filter.

//oibuy = 0

//oisell = 0

//oibuy := clrdirection == 1 and oilower==1? nz(oibuy[1])+1 : 0

//oisell := clrdirection ==-1 and oiupper==1? nz(oisell[1])+1 : 0

// Bollinger Outside In using MACross signal Filter

oiMACrossbuy = 0

oiMACrosssell = 0

oiMACrossbuy := oiMACrosslower==1? nz(oiMACrossbuy[1])+1 : 0

oiMACrosssell := oiMACrossupper==1? nz(oiMACrosssell[1])+1 : 0

// Bollinger Outside In + 3xMA Filter

oi3xmabuy = 0

oi3xmasell = 0

oi3xmabuy := oiMACrossbuy>0 and (disable3xMAFilter or madirection==1)? nz(oi3xmabuy[1])+1 : 0

oi3xmasell := oiMACrosssell>0 and (disable3xMAFilter or madirection==-1)? nz(oi3xmasell[1])+1 : 0

// Bollinger Outside In + SuperTrend Filter

oistbuy = 0

oistsell = 0

oistbuy := oiMACrossbuy>0 and STrend==1? nz(oistbuy[1])+1 : 0

oistsell := oiMACrosssell>0 and STrend==-1? nz(oistsell[1])+1 : 0

// FastMA crossover HullMA and SuperTrend

macrossSTbuy = 0

macrossSTsell = 0

macrossSTbuy := crossover(ma_fast,ma_coloured) and STrend==1? nz(macrossSTbuy[1])+1 : 0

macrossSTsell := crossunder(ma_fast,ma_coloured) and STrend==-1? nz(macrossSTsell[1])+1 : 0

// FastMA crossover HullMA and 3xMA

macross3xMAbuy = 0

macross3xMAsell = 0

macross3xMAbuy := crossover(ma_fast,ma_coloured) and (disable3xMAFilter or madirection==1) ? nz(macross3xMAbuy[1])+1 : 0

macross3xMAsell := crossunder(ma_fast,ma_coloured) and (disable3xMAFilter or madirection==-1) ? nz(macross3xMAsell[1])+1 : 0

// Check any Alerts set

long = (u3xMATrendFilter and _3xmabuy==1) or (uSuperTrendFilter and stbuy==1) or (uBothTrendFilters and st3xmabuy==1) or

(uOI3xMAFilter and oi3xmabuy==1) or (uOISTFilter and oistbuy==1) or (uOIMACrossFilter and oiMACrossbuy==1) or

(uMACrossSTFilter and macrossSTbuy==1) or (uMACross3xMAFilter and macross3xMAbuy==1)

short = (u3xMATrendFilter and _3xmasell==1) or (uSuperTrendFilter and stsell==1) or (uBothTrendFilters and st3xmasell==1) or

(uOI3xMAFilter and oi3xmasell==1) or (uOISTFilter and oistsell==1) or (uOIMACrossFilter and oiMACrosssell==1) or

(uMACrossSTFilter and macrossSTsell==1) or (uMACross3xMAFilter and macross3xMAsell==1)

// If Alert Detected, then Draw Big fat liner

plotshape( long ? long : na, title="Long Line Marker",

location=location.belowbar,style=shape.arrowup, color=buyclr,transp=20,size=size.auto, text='████████████████',textcolor=buyclr)

plotshape( short ? short : na, title="Short Line Marker",

location=location.abovebar,style=shape.arrowdown, color=sellclr,transp=20,size=size.auto, text='████████████████',textcolor=sellclr)

// --- Arrow style signals

// No Filters only Hull Signals

hbuy = 0

hsell = 0

hbuy := clrdirection == 1 ? nz(hbuy[1])+1 : 0

hsell := clrdirection ==-1 ? nz(hsell[1])+1 : 0

// FastMA crossover HullMA

macrossbuy = 0

macrosssell = 0

macrossbuy := crossover(ma_fast,ma_coloured)? nz(macrossbuy[1])+1 : 0

macrosssell := crossunder(ma_fast,ma_coloured)? nz(macrosssell[1])+1 : 0

along = (disableAllFilters and hbuy==1) or (uMACrossFilter and macrossbuy==1)

ashort = (disableAllFilters and hsell==1) or (uMACrossFilter and macrosssell==1)

// If ColouredMA or MACross then draw big arrows

plotarrow( along ? 1 : ashort? -1 : na, title="ColouredMA or MACross Arrow", colorup=buyColour, colordown=sellColour, maxheight=100, minheight=50, transp=20)

// Update alarm conditions

long := long or along

short := short or ashort

// === /ALERTING ===

// === ALARMS ===

alertcondition(long or short, title="Signal Alert",message="SIGNAL")

alertcondition(long, title="Long Alert",message="LONG")

alertcondition(short, title="Short Alert",message="SHORT")

// === /ALARMS ===

//EOF

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