//+------------------------------------------------------------------+
//|                                    Sidus v.3 Entry Indicator.mq4 |
//|                                                                  |
//|                                                   Ideas by Sidus |
//+------------------------------------------------------------------+
#property copyright ""
#property link      ""

#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 Yellow
#property indicator_color2 Red
#property indicator_color3 Aqua
#property indicator_color4 Yellow
#property indicator_width1 2
#property indicator_width2 2
#property indicator_width3 3  
#property indicator_width4 3   

//
//
//
//
//

extern int    FastEMA          = 15;
extern int    SlowEMA          = 34;
extern string ex               = "0=SMA,1=EMA,2=SSMA,3=LWMA";
extern int    mamode           = MODE_LWMA;
extern string ex2              = "0=Close,1=Open,2=High,3=Low";
extern string ex2a             = "4=Median,5=Typical,6=Weighted";
extern int    maprice          = PRICE_CLOSE;
extern int    RSIPeriod        = 8;

extern bool   alertsOn         = true;
extern bool   alertsOnCurrent  = false;
extern bool   alertsMessage    = true;
extern bool   alertsSound      = true;
extern bool   alertsEmail      = false;
extern string soundfile        = "alert2.wav";
//
//
//
//
//

// Robert changed buffer names to be more readable
double FastMA_Buffer[];
double SlowMA_Buffer[];
double UpArrowBuffer[];
double DownArrowBuffer[];
double trend[];


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
//
//
//
//
//

int init()
{
   IndicatorBuffers(5);
   SetIndexBuffer(0,FastMA_Buffer);
   SetIndexBuffer(1,SlowMA_Buffer);
   SetIndexBuffer(2,UpArrowBuffer); SetIndexStyle(2,DRAW_ARROW); SetIndexArrow(2,233);
   SetIndexBuffer(3,DownArrowBuffer); SetIndexStyle(3,DRAW_ARROW); SetIndexArrow(3,234);
   SetIndexBuffer(4,trend);
  
   return(0);
}
int deinit() { return(0); }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
//
//
//
//
//

int start()
{
   int counted_bars=IndicatorCounted();
   int limit;
   
   if(counted_bars<0) return(-1);
   if(counted_bars>0) counted_bars--;
         limit=MathMin(Bars-counted_bars,Bars-1);

   //
   //
   //
   //
   //
   
   for(int i=limit; i>=0; i--)
   {
      FastMA_Buffer[i] = iMA(NULL,0,FastEMA,0,mamode,maprice,i);
      SlowMA_Buffer[i] = iMA(NULL,0,SlowEMA,0,mamode,maprice,i);
      UpArrowBuffer[i] = EMPTY_VALUE;
      DownArrowBuffer[i] = EMPTY_VALUE;
      trend[i]         = trend[i+1];

      //
      //
      //
      //
      //
      
      double dist = iATR(NULL,0,20,i);
      double rsi  = iRSI(NULL, 0, RSIPeriod, PRICE_CLOSE, i);
      double diff = (FastMA_Buffer[i]-SlowMA_Buffer[i]);

         if (diff>0 && rsi>50) trend[i] =  1;
         if (diff<0 && rsi<50) trend[i] = -1;
         if (trend[i]!=trend[i+1])
            if (trend[i]==1)
                  UpArrowBuffer[i] = FastMA_Buffer[i]-dist;
            else  DownArrowBuffer[i] = FastMA_Buffer[i]+dist;  
         }
         if (alertsOn)
         {
         if (alertsOnCurrent)
              int whichBar = 0;
         else     whichBar = 1;

         //
         //
         //
         //
         //
         
         if (trend[whichBar] != trend[whichBar+1])
         if (trend[whichBar] == 1)
               doAlert("uptrend");
         else  doAlert("downtrend");       
   }
   
   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)," sidus ",doWhat);
             if (alertsMessage) Alert(message);
             if (alertsEmail)   SendMail(StringConcatenate(Symbol()," sidus "),message);
             if (alertsSound)   PlaySound(soundfile);
      }
}