//+------------------------------------------------------------------+
//| EMA_CROSS_IND.mq4 |
//| Codersguru |
//| http://www.forex-tsd.com |
//+------------------------------------------------------------------+
#property copyright "Codersguru"
#property link "http://www.forex-tsd.com"
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Blue
extern int ShortEma = 10;
extern int LongEma = 80;
extern color UpCross = Gold;
extern color DownCross = DarkGreen;
extern int ArrowCode1 = 233;
extern int ArrowCode2 = 234;
extern bool reversal = true;
extern bool Alert_On = true;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
void DrawArrow( int bar , double value , int trend)
{
static int cnt = 0;
cnt++;
string crossing = "CROSSING_" + cnt;
string label = "LABEL" + cnt;
ObjectCreate(crossing, OBJ_ARROW, 0, Time[bar], value);
if(reversal==false)
{
if (trend == 1) trend = 2;
else if (trend == 2) trend = 1;
}
if(trend == 1)
{
ObjectSet(crossing, OBJPROP_ARROWCODE, ArrowCode1);
ObjectSet(crossing, OBJPROP_COLOR , UpCross);
}
if(trend == 2)
{
ObjectSet(crossing, OBJPROP_ARROWCODE, ArrowCode2);
ObjectSet(crossing, OBJPROP_COLOR , DownCross);
}
ObjectSet(crossing, OBJPROP_WIDTH , 1);
ObjectsRedraw();
}
int Crossed (double line1 , double line2)
{
static int last_direction = 0;
static int current_direction = 0;
//Don't work in the first load, wait for the first cross!
static bool first_time = true;
if(first_time == true)
{
first_time = false;
return (0);
}
if(line1>line2)current_direction = 1; //up
if(line1<line2)current_direction = 2; //down
if(current_direction != last_direction) //changed
{
last_direction = current_direction;
return (last_direction);
}
else
{
return (0); //not changed
}
}
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
SetIndexStyle(0,DRAW_LINE, STYLE_SOLID,2);
SetIndexBuffer(0,ExtMapBuffer1);
SetIndexStyle(1,DRAW_LINE, STYLE_SOLID,2);
SetIndexBuffer(1,ExtMapBuffer2);
string short_name = "EMA CROSS INDICATOR!";
IndicatorShortName(short_name);
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
//Delete all the drawn objects!
int I = WindowsTotal();
for (int count = 0; count < WindowsTotal(); count++)
{
ObjectsDeleteAll(count, OBJ_ARROW);
ObjectsDeleteAll(count, OBJ_TEXT);
}
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
double SEma, LEma;
int counted_bars=IndicatorCounted();
if (counted_bars<0) return(-1);
if (counted_bars>0) counted_bars--;
int pos=Bars-counted_bars;
static int isCrossed = 0;
//---- main calculation loop
while(pos>=0)
{
SEma = iMA(NULL,0,ShortEma,0,MODE_EMA,PRICE_CLOSE,pos);
LEma = iMA(NULL,0,LongEma,0,MODE_EMA,PRICE_CLOSE,pos);
isCrossed = Crossed (LEma,SEma);
if(isCrossed > 0)
{
DrawArrow (pos + 1 , SEma , isCrossed);
}
ExtMapBuffer1[pos]= SEma;
ExtMapBuffer2[pos]= LEma;
pos--;
}
//----
SEma = iMA(NULL,0,ShortEma,0,MODE_EMA,PRICE_CLOSE,0);
LEma = iMA(NULL,0,LongEma,0,MODE_EMA,PRICE_CLOSE,0);
isCrossed = Crossed (LEma,SEma);
if(isCrossed > 0)
{
if(Alert_On)
{
if (isCrossed == 1) Alert("Short EMA(" + ShortEma + ") has been crossed Long EMA(" + LongEma + ") Upward");
if (isCrossed == 2) Alert("Short EMA(" + ShortEma + ")has been crossed Long EMA(" + LongEma + ") Downward");
}
}
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains open time of each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features:
It issuies visual alerts to the screen