//+--------------------------------------------------------------------------+
//| 3 MA Cross with alert.mq4 |
//| mladen |
//+--------------------------------------------------------------------------+
#property copyright "mladen"
#property link "mladenfx@gmail.com"
#property indicator_chart_window
#property indicator_buffers 7
#property indicator_color1 DodgerBlue
#property indicator_color2 Red
#property indicator_color3 Gold
#property indicator_color4 Gold
#property indicator_color5 Lime
#property indicator_color6 YellowGreen
#property indicator_color7 CadetBlue
#property indicator_width1 1
#property indicator_width2 1
#property indicator_width3 1
#property indicator_width4 1
//
//
//
//
//
extern int FasterMA = 5;
extern int FasterShift = 0;
extern int FasterMode = 1;
extern int MediumMA = 21;
extern int MediumShift = 0;
extern int MediumMode = 1;
extern int SlowerMA = 34;
extern int SlowerShift = 0;
extern int SlowerMode = 1;
extern bool showMAs = true;
extern bool crossesOnCurrent = true;
extern bool alertsOn = false;
extern bool alertsMessage = true;
extern bool alertsSound = false;
extern bool alertsEmail = false;
//
//
//
//
//
double CrossUp[];
double CrossDown[];
double CrossWUp[];
double CrossWDown[];
double ma1[];
double ma2[];
double ma3[];
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
//
//
//
//
//
int init()
{
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW); SetIndexArrow(0, 233);
SetIndexBuffer(1, CrossDown); SetIndexStyle(1, DRAW_ARROW); SetIndexArrow(1, 234);
SetIndexBuffer(2, CrossWUp); SetIndexStyle(2, DRAW_ARROW); SetIndexArrow(2, 233);
SetIndexBuffer(3, CrossWDown); SetIndexStyle(3, DRAW_ARROW); SetIndexArrow(3, 234);
SetIndexBuffer(4,ma1);
SetIndexBuffer(5,ma2);
SetIndexBuffer(6,ma3);
if (showMAs)
{
SetIndexStyle(4,DRAW_LINE);
SetIndexStyle(5,DRAW_LINE);
SetIndexStyle(6,DRAW_LINE);
SetIndexEmptyValue(4,0.00);
SetIndexEmptyValue(5,0.00);
SetIndexEmptyValue(6,0.00);
}
else
{
SetIndexStyle(4,DRAW_NONE);
SetIndexStyle(5,DRAW_NONE);
SetIndexStyle(6,DRAW_NONE);
}
return(0);
}
int deinit()
{
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
//
//
//
//
//
int start()
{
int limit, i;
int counted_bars=IndicatorCounted();
double fasterMAnow, fasterMAprevious;
double mediumMAnow, mediumMAprevious;
double slowerMAnow, slowerMAprevious;
if(counted_bars<0) return(-1);
if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars;
if (FasterShift < 0) limit = MathMax(limit,-FasterShift);
if (MediumShift < 0) limit = MathMax(limit,-MediumShift);
if (SlowerShift < 0) limit = MathMax(limit,-SlowerShift);
//
//
//
//
//
//
for(i = limit; i >=0; i--)
{
ma1[i] = iMA(NULL, 0, FasterMA, FasterShift, FasterMode, PRICE_CLOSE, i);
ma2[i] = iMA(NULL, 0, MediumMA, MediumShift, MediumMode, PRICE_CLOSE, i);
ma3[i] = iMA(NULL, 0, SlowerMA, SlowerShift, SlowerMode, PRICE_CLOSE, i);
if (crossesOnCurrent==false && i==0) continue;
//
//
//
//
//
fasterMAnow = ma1[i];
fasterMAprevious = ma1[i+1];
mediumMAnow = ma2[i];
mediumMAprevious = ma2[i+1];
slowerMAnow = ma3[i];
slowerMAprevious = ma3[i+1];
//
//
//
//
//
int crossID=0;
double curr;
double prev;
double point;
while (true)
{
if (fasterMAnow > 0 && mediumMAnow > 0)
{
curr = fasterMAnow - mediumMAnow;
prev = fasterMAprevious - mediumMAprevious;
point = (fasterMAnow + fasterMAprevious)/2;
if (curr*prev<=0) { crossID=1; break; }
}
if (fasterMAnow > 0 && slowerMAnow > 0)
{
curr = fasterMAnow - slowerMAnow;
prev = fasterMAprevious - slowerMAprevious;
point = (fasterMAnow + fasterMAprevious)/2;
if (curr*prev<=0) { crossID=2; break; }
}
if (mediumMAnow > 0 && slowerMAnow > 0)
{
curr = mediumMAnow - slowerMAnow;
prev = mediumMAprevious - slowerMAprevious;
point = (mediumMAnow + mediumMAprevious)/2;
if (curr*prev<=0) { crossID=3; break; }
}
break;
}
//
//
//
//
//
CrossUp[i] = EMPTY_VALUE;
CrossDown[i] = EMPTY_VALUE;
CrossWUp[i] = EMPTY_VALUE;
CrossWDown[i] = EMPTY_VALUE;
if (crossID>0)
{
if (alertsOn)
if ((i==0 && crossesOnCurrent==true) || (i==1 && crossesOnCurrent==false))
{
switch (crossID)
{
case 1:
if(curr>0) doAlert("Fast MA crossed Medium MA UP");
else doAlert("Fast MA crossed Medium MA DOWN");
break;
case 2:
if(curr>0) doAlert("Fast MA crossed Slow MA UP");
else doAlert("Fast MA crossed Slow MA DOWN");
break;
case 3:
if(curr>0) doAlert("Medium MA crossed Slow MA UP");
else doAlert("Medium MA crossed Slow MA DOWN");
break;
}
}
//
//
//
//
//
double Range = 0.0;
for (int counter=i ;counter<=i+9;counter++) Range += MathAbs(High[counter]-Low[counter]);
Range /= 10;
//
//
//
//
//
if (i==0)
{
if (curr>0)
CrossWUp[i] = point - Range*0.5;
else CrossWDown[i] = point + Range*0.5;
}
else
{
if (curr>0)
CrossUp[i] = point - Range*0.5;
else CrossDown[i] = point + Range*0.5;
}
}
}
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
//
//
//
//
void doAlert(string doWhat)
{
static string previousAlert="nothing";
static datetime previousTime;
string message;
if (previousAlert != doWhat || previousTime != Time[0]) {
previousAlert = doWhat;
previousTime = Time[0];
//
//
//
//
//
message = StringConcatenate(Symbol()," at ",TimeToStr(TimeLocal(),TIME_SECONDS)," ",doWhat);
if (alertsMessage) Alert(message);
if (alertsEmail) SendMail(StringConcatenate(Symbol(),"3 MA line crossing"),message);
if (alertsSound) PlaySound("alert2.wav");
}
}
Sample
Analysis
Market Information Used:
Series array that contains the highest prices of each bar
Series array that contains the lowest prices of each bar
Series array that contains open time of each bar
Indicator Curves created:
Implements a curve of type DRAW_ARROW
Implements a curve of type DRAW_LINE
Implements a curve of type DRAW_NONE
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features:
It issuies visual alerts to the screen
It sends emails
It plays sound alerts