Forex Distance最新版

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Lime
#property indicator_color2 Red

extern string TimeFrame = “current time frame”;
extern int HalfLength = 35;
extern int Price = PRICE_CLOSE;
extern int EnvelopeShift = 0;
extern double Deviation = 0.35;

extern string note = “turn on Alert = true; turn off = false”;
extern bool alertsOn = false;
extern bool alertsOnCurrent = false;
extern bool alertsMessage = false;
extern bool alertsSound = false;
extern bool alertsEmail = false;
extern string soundfile = “news.wav”;

double UpEnv[];
double DnEnv[];
double tmBuffer[];
double trend[];

string indicatorFileName;
bool calculateValue;
bool returnBars;
int timeFrame;

int init()
{
IndicatorBuffers(4);
HalfLength=MathMax(HalfLength,1);
SetIndexBuffer(0,UpEnv); SetIndexDrawBegin(0,HalfLength);
SetIndexBuffer(1,DnEnv); SetIndexDrawBegin(1,HalfLength);
SetIndexBuffer(2,tmBuffer);
SetIndexBuffer(3,trend);

indicatorFileName = WindowExpertName();
returnBars = TimeFrame==”returnBars”; if (returnBars) return(0);
calculateValue = TimeFrame==”calculateValue”; if (calculateValue) return(0);
timeFrame = stringToTimeFrame(TimeFrame);
SetIndexShift(0,EnvelopeShift * timeFrame/Period());
SetIndexShift(1,EnvelopeShift * timeFrame/Period());

return(0);
}

int deinit() { return(0); }

int start()
{
int counted_bars=IndicatorCounted();
int i,j,k,limit;

if(counted_bars<0) return(-1);
if(counted_bars>0) counted_bars–;
limit=MathMin(Bars-1,Bars-counted_bars+HalfLength);
if (returnBars) { UpEnv[0] = limit+1; return(0); }

if (calculateValue || timeFrame==Period())
{
for (i=limit; i>=0; i–)
{
double sum = (HalfLength+1)*iMA(NULL,0,1,0,MODE_SMA,Price,i);
double sumw = (HalfLength+1);
for (j=1, k=HalfLength; j<=HalfLength; j++, k–)
{
sum += k*iMA(NULL,0,1,0,MODE_SMA,Price,i+j);
sumw += k;

if (j<=i)
{
sum += k*iMA(NULL,0,1,0,MODE_SMA,Price,i-j);
sumw += k;
}
}

tmBuffer[i] = sum/sumw;
UpEnv[i] = (1+Deviation/100)*tmBuffer[i];
DnEnv[i] = (1-Deviation/100)*tmBuffer[i];
trend[i] = trend[i+1];
if (Close[i]>DnEnv[i] && Close[i+1]<=DnEnv[i+1]) trend[i] = 1;
if (Close[i]<UpEnv[i] && Close[i+1]>=UpEnv[i+1]) trend[i] =-1;
}

manageAlerts();
return(0);
}

limit = MathMax(limit,MathMin(Bars-1,iCustom(NULL,timeFrame,indicatorFileName,”returnBars”,0,0)*timeFrame/Period()));
for(i=limit; i>=0; i–)
{
int y = iBarShift(NULL,timeFrame,Time[i]);
UpEnv[i] = iCustom(NULL,timeFrame,indicatorFileName,”calculateTma”,HalfLength,Price,EnvelopeShift,Deviation,0,y);
DnEnv[i] = iCustom(NULL,timeFrame,indicatorFileName,”calculateTma”,HalfLength,Price,EnvelopeShift,Deviation,1,y);
trend[i] = iCustom(NULL,timeFrame,indicatorFileName,”calculateTma”,HalfLength,Price,EnvelopeShift,Deviation,3,y);
}
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 char1 = StringGetChar(s, length);
if((char1 > 96 && char1 < 123) || (char1 > 223 && char1 < 256))
s = StringSetChar(s, length, char1 – 32);
else if(char1 > -33 && char1 < 0)
s = StringSetChar(s, length, char1 + 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 (trend[whichBar] != trend[whichBar+1])
{
if (trend[whichBar] == 1) doAlert(whichBar,”trend”);
if (trend[whichBar] ==-1) doAlert(whichBar,”no trend”);
}
}
}

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(),” at “,TimeToStr(TimeLocal(),TIME_SECONDS),” – “,timeFrameToString(timeFrame)+” Tma centered envelopes “,doWhat);
if (alertsMessage) Alert(message);
if (alertsEmail) SendMail(StringConcatenate(Symbol(),” Tma centered envelopes “),message);
if (alertsSound) PlaySound(“alert2.wav”);
}
}