//+------------------------------------------------------------------+
//| HeikenAshiOscillator.mq4
//| Copyright http://www.pointzero-indicator.com
//+------------------------------------------------------------------+
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 LimeGreen
#property indicator_color2 Red
#property indicator_width1 3
#property indicator_width2 3
#property indicator_minimum 0
#property indicator_maximum 1
//-------------------------------
// External variables
//-------------------------------
//
//
extern string TimeFrame = "Current time frame";
extern string note = "turn on Alert = true; turn off = false";
extern bool alertsOn = true;
extern bool alertsOnCurrent = false;
extern bool alertsMessage = true;
extern bool alertsSound = true;
extern bool alertsNotify = false;
extern bool alertsEmail = false;
//-------------------------------
// Buffers
//-------------------------------
double FextMapBuffer1[];
double FextMapBuffer2[];
double FextMapBuffer4[];
double FextMapBuffer5[];
double trend1[];
//
//
//
//
//
string indicatorFileName;
int timeFrame;
bool returnBars;
bool calculateValue;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//|------------------------------------------------------------------|
int init()
{
IndicatorBuffers(5);
SetIndexBuffer(0,FextMapBuffer1); SetIndexStyle(0,DRAW_HISTOGRAM);
SetIndexBuffer(1,FextMapBuffer2); SetIndexStyle(1,DRAW_HISTOGRAM);
SetIndexBuffer(2,FextMapBuffer4);
SetIndexBuffer(3,FextMapBuffer5);
SetIndexBuffer(4,trend1);
//
//
//
//
//
indicatorFileName = WindowExpertName();
calculateValue = (TimeFrame=="calculateValue"); if (calculateValue) return(0);
returnBars = (TimeFrame=="returnBars"); if (returnBars) return(0);
timeFrame = stringToTimeFrame(TimeFrame);
//
//
//
//
//
IndicatorShortName(timeFrameToString(timeFrame)+ " Heiken Ashi Oscillator");
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int counted_bars=IndicatorCounted();
int pos,limit;
if(counted_bars<0) return(-1);
if(counted_bars>0) counted_bars--;
limit = MathMin(Bars-counted_bars,Bars-1);
if (returnBars) { FextMapBuffer1[0] = limit+1; return(0); }
//
//
//
//
//
if (calculateValue || timeFrame==Period())
{
for(pos=limit; pos >= 0; pos--)
{
double open = iCustom(NULL,0,"Heiken Ashi",2,pos);
double close = iCustom(NULL,0,"Heiken Ashi",3,pos);
FextMapBuffer4[pos] = (open + close) / 2;
FextMapBuffer5[pos] = FextMapBuffer4[pos] - FextMapBuffer4[pos+1];
FextMapBuffer1[pos] = EMPTY_VALUE;
FextMapBuffer2[pos] = EMPTY_VALUE;
trend1[pos] = trend1[pos+1];
if(FextMapBuffer5[pos]>0) trend1[pos] = 1;
if(FextMapBuffer5[pos]<0) trend1[pos] =-1;
if(trend1[pos] == 1) FextMapBuffer1[pos] = 1;
if(trend1[pos] ==-1) FextMapBuffer2[pos] = 1;
}
manageAlerts();
return(0);
}
//
//
//
//
//
limit = MathMax(limit,MathMin(Bars-1,iCustom(NULL,timeFrame,indicatorFileName,"returnBars",0,0)*timeFrame/Period()));
for (pos=limit;pos>=0; pos--)
{
int y = iBarShift(NULL,timeFrame,Time[pos]);
trend1[pos] = iCustom(NULL,timeFrame,indicatorFileName,"calculateValue",3,y);
FextMapBuffer1[pos] = EMPTY_VALUE;
FextMapBuffer2[pos] = EMPTY_VALUE;
if(trend1[pos] == 1) FextMapBuffer1[pos] = 1;
if(trend1[pos] ==-1) FextMapBuffer2[pos] = 1;
}
manageAlerts();
return(0);
}
//+-------------------------------------------------------------------
//|
//+-------------------------------------------------------------------
//
//
//
//
//
string sTfTable[] = {"M1","M5","M15","M30","H1","H4","D1","W1","MN"};
int iTfTable[] = {1,5,15,30,60,240,1440,10080,43200};
//
//
//
//
//
int stringToTimeFrame(string tfs)
{
tfs = stringUpperCase(tfs);
for (int i=ArraySize(iTfTable)-1; i>=0; i--)
if (tfs==sTfTable[i] || tfs==""+iTfTable[i]) return(MathMax(iTfTable[i],Period()));
return(Period());
}
//
//
//
//
//
string timeFrameToString(int tf)
{
for (int i=ArraySize(iTfTable)-1; i>=0; i--)
if (tf==iTfTable[i]) return(sTfTable[i]);
return("");
}
//
//
//
//
//
string stringUpperCase(string str)
{
string s = str;
for (int length=StringLen(str)-1; length>=0; length--)
{
int char = StringGetChar(s, length);
if((char > 96 && char < 123) || (char > 223 && char < 256))
s = StringSetChar(s, length, char - 32);
else if(char > -33 && char < 0)
s = StringSetChar(s, length, char + 224);
}
return(s);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
//
//
//
//
//
void manageAlerts()
{
if (!calculateValue && alertsOn)
{
if (alertsOnCurrent)
int whichBar = 0;
else whichBar = 1; whichBar = iBarShift(NULL,0,iTime(NULL,timeFrame,whichBar));
if (trend1[whichBar] != trend1[whichBar+1])
{
if (trend1[whichBar] == 1) doAlert(whichBar,"up");
if (trend1[whichBar] ==-1) doAlert(whichBar,"down");
}
}
}
//
//
//
//
//
void doAlert(int forBar, string doWhat)
{
static string previousAlert="nothing";
static datetime previousTime;
string message;
if (previousAlert != doWhat || previousTime != Time[forBar]) {
previousAlert = doWhat;
previousTime = Time[forBar];
//
//
//
//
//
message = StringConcatenate(Symbol()," ",timeFrameToString(timeFrame)," at ",TimeToStr(TimeLocal(),TIME_SECONDS)," Heiken Ashi Oscillator ",doWhat);
if (alertsMessage) Alert(message);
if (alertsNotify) SendNotification(StringConcatenate(Symbol(), Period() ," Heiken Ashi Oscillator " +" "+message));
if (alertsEmail) SendMail(StringConcatenate(Symbol()," Heiken Ashi Oscillator "),message);
if (alertsSound) PlaySound("alert2.wav");
}
}