//+------------------------------------------------------------------+
//|                                                     Alert_MA.mq4 |
//|                                                        Brian Kett|
//+------------------------------------------------------------------+
#property copyright "Brian Kett"

#property indicator_chart_window
#property indicator_buffers 1
#property indicator_color1 Blue

//---- input parameters
/*************************************************************************
PERIOD_M1   1
PERIOD_M5   5
PERIOD_M15  15
PERIOD_M30  30 
PERIOD_H1   60
PERIOD_H4   240
PERIOD_D1   1440
PERIOD_W1   10080
PERIOD_MN1  43200
You must use the numeric value of the timeframe that you want to use
when you set the TimeFrame' value with the indicator inputs.
---------------------------------------
PRICE_CLOSE    0 Close price. 
PRICE_OPEN     1 Open price. 
PRICE_HIGH     2 High price. 
PRICE_LOW      3 Low price. 
PRICE_MEDIAN   4 Median price, (high+low)/2. 
PRICE_TYPICAL  5 Typical price, (high+low+close)/3. 
PRICE_WEIGHTED 6 Weighted close price, (high+low+close+close)/4. 
You must use the numeric value of the Applied Price that you want to use
when you set the 'applied_price' value with the indicator inputs.
---------------------------------------
MODE_SMA    0 Simple moving average, 
MODE_EMA    1 Exponential moving average, 
MODE_SMMA   2 Smoothed moving average, 
MODE_LWMA   3 Linear weighted moving average. 
You must use the numeric value of the MA Method that you want to use
when you set the 'ma_method' value with the indicator inputs.

**************************************************************************/
extern int TimeFrame=0;
extern int range = 1;
extern int MAPeriod = 55;
extern int ma_shift = 0;
extern int ma_method = MODE_EMA;
extern int applied_price = PRICE_OPEN;

double buffer1[];
static int LastAlert = 0;
static int LastAlert_1 = 1;
 
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+

int init()
  {
   string short_name;
//---- indicator line
   SetIndexBuffer(0,buffer1);
   SetIndexStyle(0,DRAW_LINE, STYLE_SOLID, 2);
//---- name for DataWindow and indicator subwindow label   
   switch(ma_method)
     {
      case 1 : short_name="MTF_EMA("; break;
      case 2 : short_name="MTF_SMMA("; break;
      case 3 : short_name="MTF_LWMA("; break;
      default : short_name="MTF_SMA(";
     }
   switch(TimeFrame)
   {
      case 1 : string TimeFrameStr="Period_M1"; break;
      case 5 : TimeFrameStr="Period_M5"; break;
      case 15 : TimeFrameStr="Period_M15"; break;
      case 30 : TimeFrameStr="Period_M30"; break;
      case 60 : TimeFrameStr="Period_H1"; break;
      case 240 : TimeFrameStr="Period_H4"; break;
      case 1440 : TimeFrameStr="Period_D1"; break;
      case 10080 : TimeFrameStr="Period_W1"; break;
      case 43200 : TimeFrameStr="Period_MN1"; break;
      default : TimeFrameStr="Current Timeframe";
   } 
   IndicatorShortName("MA"+TimeFrameStr);  
  }
//----
   return(0);
   
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   datetime TimeArray[];
   int    i,shift,limit,y=0,counted_bars=IndicatorCounted();
    
// Plot defined timeframe on to current timeframe   
   ArrayCopySeries(TimeArray,MODE_TIME,Symbol(),TimeFrame); 
   
   limit=Bars-counted_bars;
   for(i=0,y=0;i<limit;i++)
   {
   if (Time[i]<TimeArray[y]) y++; 
   
 /***********************************************************   
   Add your main indicator loop below.  You can reference an existing
      indicator with its iName  or iCustom.
   Rule 1:  Add extern inputs above for all neccesary values   
   Rule 2:  Use 'TimeFrame' for the indicator timeframe
   Rule 3:  Use 'y' for the indicator's shift value
 **********************************************************/  
   buffer1[i]=iMA(NULL,TimeFrame,MAPeriod,ma_shift,ma_method,applied_price,y) ; 
   
   if( (Bid <= buffer1[i]+(range*Point)) && (Bid >= buffer1[i]-(range*Point)))
   {
   if( LastAlert == 0 || LastAlert_1 < Bars )
   {
       Alert(Symbol()+" "+MAPeriod+" MA range reached at ",Bid);
       LastAlert = Bars;
   }
  }
 }
//----
   return(0);
  }
//+------------------------------------------------------------------+