//+------------------------------------------------------------------+
//|                                                         OsMA.mq4 |
//|                      Copyright © 2004, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2004, MetaQuotes Software Corp."
#property  link      "http://www.metaquotes.net/"

//---- indicator settings
#property  indicator_separate_window
#property  indicator_buffers 4
#property  indicator_color1  LimeGreen
#property  indicator_color2  Maroon
#property  indicator_color3  Red
#property  indicator_color4  Green

//---- indicator buffers
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalSMA=9;
extern int TimeFrame=0;

double     ind_buffer1[], ind_buffer1s[];
double     ind_buffer2[], ind_buffer2s[];
double     ind_buffer3[];
datetime   LastCross;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- 1 additional buffer used for counting.
   IndicatorBuffers(5);
   //---- drawing settings
   SetIndexStyle(0,DRAW_HISTOGRAM,STYLE_SOLID,2);
   SetIndexStyle(1,DRAW_HISTOGRAM,STYLE_SOLID,2);
   SetIndexStyle(2,DRAW_HISTOGRAM,STYLE_SOLID,2);
   SetIndexStyle(3,DRAW_HISTOGRAM,STYLE_SOLID,2);
   IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)+1);
   SetIndexDrawBegin(0,34);
   SetIndexDrawBegin(1,34);
   SetIndexDrawBegin(3,34);
   SetIndexDrawBegin(4,34);
//---- 3 indicator buffers mapping
   if(!SetIndexBuffer(0,ind_buffer1) &&
      !SetIndexBuffer(1,ind_buffer1s) &&
      !SetIndexBuffer(2,ind_buffer2) &&
      !SetIndexBuffer(3,ind_buffer2s) &&
      !SetIndexBuffer(4,ind_buffer3))
      Print("cannot set indicator buffers!");
      
//---- name for DataWindow and indicator subwindow label

   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("OsMA("+FastEMA+","+SlowEMA+","+SignalSMA+")TF("+TimeFrame+")");
//---- initialization done
   LastCross = Time[0];
   Comment(TimeToStr(LastCross,TIME_DATE|TIME_SECONDS));
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
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++; 

   ind_buffer3[i]=iOsMA(NULL,TimeFrame,FastEMA,SlowEMA,SignalSMA,PRICE_WEIGHTED,y);
   
   }
    
   double prev,current;
      

//---- dispatch values between 2 buffers
   bool up=true;
   for(i=limit-1; i>=0; i--)
     {
      if(Time[i]>LastCross)
      {
        if(ind_buffer3[i+2]<0 && ind_buffer3[i+1]>0)
        {
          LastCross = Time[i];
          Alert("Cross Up at ",TimeToStr(Time[i+1],TIME_DATE|TIME_SECONDS));
        }
        else if(ind_buffer3[i+2]>0 && ind_buffer3[i+1]<0)
        {
          LastCross = Time[i];
          Alert("Cross Down at ",TimeToStr(Time[i+1],TIME_DATE|TIME_SECONDS));
        }        
      }
     
      current=ind_buffer3[i];
      prev=ind_buffer3[i+1];
      if (((current<0)&&(prev>0))||(current<0))   up= false;    
      if (((current>0)&&(prev<0))||(current>0))   up= true;
            
      
      if(!up)
        {
         if(current > prev)
           {
            ind_buffer2s[i]=current;
            ind_buffer2[i]=0.0;
            ind_buffer1[i]=0.0;
            ind_buffer1s[i]=0.0;             
           }        
         else
           {
            ind_buffer2[i]=current;
            ind_buffer2s[i]=0.0;
            ind_buffer1[i]=0.0;
            ind_buffer1s[i]=0.0;            
           }             
        }
        else
        {
         if(current < prev)
           {
            ind_buffer1s[i]=current;
            ind_buffer1[i]=0.0;
            ind_buffer2[i]=0.0;
            ind_buffer2s[i]=0.0;
           }
        else
           {
            ind_buffer1[i]=current;
            ind_buffer1s[i]=0.0;
            ind_buffer2[i]=0.0;
            ind_buffer2s[i]=0.0;
            }           
         }       
     }
//---- done
   return(0);
  }