BeginnerAlert_v2

//+------------------------------------------------------------------+
//|                                                     Beginner.mq4 |
//|                                                 Copyright © 2007 |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007, Heaven"
#property link      "http://Beginner.com"
//----
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_color2 Red
#define  SH_BUY   1
#define  SH_SELL  -1
//---- Âõîäíûå ïàðàìåòðû
extern bool SoundON=true;
extern int     AllBars=0;//Äëÿ ñêîëüêè áàðîâ ñ÷èòàòü. 0 - äëÿ âñåõ.
extern int     Otstup=30;//Îòñòóï.
extern double  Per=9;//Ïåðèîä.
//----
int            SH,NB,i,UD;
double         R,SHMax,SHMin;
double         BufD[];
double         BufU[];
int flagval1=0;
int flagval2=0;
//+------------------------------------------------------------------+
//| Ôóíêöèÿ èíèöèàëèçàöèè                                            |
//+------------------------------------------------------------------+
int init()
  {
   // NB çàïèñûâàåì êîëè÷åñòâî áàðîâ äëÿ êîòîðûõ ñ÷èòàåì èíäèêàòîð
   if (Bars<AllBars+Per || AllBars==0) NB=Bars-Per; else NB=AllBars;
   IndicatorBuffers(2);
   IndicatorShortName("SHI_SilverTrendSig");
   SetIndexStyle(0,DRAW_ARROW,0,1);
   SetIndexStyle(1,DRAW_ARROW,0,1);
   SetIndexArrow(0,159);
   SetIndexArrow(1,159);
   SetIndexBuffer(0,BufU);
   SetIndexBuffer(1,BufD);
   SetIndexDrawBegin(0,Bars-NB);//Èíäèêàòîð áóäåòîòîáðàæàòüñÿ òîëüêî äëÿ NB áàðîâ
   SetIndexDrawBegin(1,Bars-NB);
   ArrayInitialize(BufD,0.0);//Çàáü¸ì îáà áóôåðà íîëèêàìè. Èíà÷å áóäåò ìóñîð ïðè ñìåíå òàéìôðåéìà.
   ArrayInitialize(BufU,0.0);
   return(0);
  }
//+------------------------------------------------------------------+
//| Ôóíêöèÿ äåèíèöèàëèçàöèè                                          |
//+------------------------------------------------------------------+
int deinit()
  {
   return(0);
  }
//+------------------------------------------------------------------+
//| Ñîáñíà èíäèêàòîð                                                 |
//+------------------------------------------------------------------+
int start()
  {
   int CB=IndicatorCounted();
   /* Òóò âîò òà ñàìàÿ îïòèìèçàöèîííàÿ ôèøêà.  ÿçûê ââåäåíà ôóíêöèÿ, êîòîðàÿ âîçâðàùàåò êîëè÷åñòâî
   ïîñ÷èòàííûõ áàðîâ, ïðè÷¸ì î÷åíü õèòðî. Ïðè ïåðâîì âûçîâå èíäèêàòîðà ýòî 0, âñ¸ ïîíÿòíî, åù¸ íè÷åãî
   íå ñ÷èòàëîñü, à çàòåì âûäà¸ò êîëè÷åñòâî îáñ÷èòàííûõ áàðîâ ìèíóñ îäèí. Ò.å. åñëè âñåãî áàðîâ 100,
   òî ôóíêöèÿ âåðí¸ò 99. ß ââ¸ë òàêîé êîä, âûøå ó ìåíÿ îïðåäåëÿëàñü NB - êîë-âî áàðîâ ïîäëåæàùèõ
   îáñ÷¸òó.  ïðèíöèïå ýòîò ïàðàìåòð ìîæíî è âûêèíóòü, îäíàêî äëÿ òåõ êòî â òàíêå (I80286) ìîæíî
   è îñòàâèòü. Òàê âîò, çäåñü, ïðè ïåðâîì âûçîâå NB îñòà¸òñÿ ïðåæíåé, à ïðè ïîñëåäóþùèõ óìåíüøàåòñÿ
   äî ïîñëåäíåãî áàðà, ò.å. 1 èëè 2, íó èëè ñêîëüêî òàì îñòàëîñü ïîñ÷èòàòü*/
   if(CB<0) return(-1); else if(NB>Bars-CB) NB=Bars-CB;
   for(SH=1;SH<NB;SH++)//Ïðî÷¸ñûâàåì ãðàôèê îò 1 äî NB
     {
      for(R=0,i=SH;i<SH+10;i++) {R+=(10+SH-i)*(High[i]-Low[i]);}      R/=55;
//----
      SHMax=High[Highest(NULL,0,MODE_HIGH,Per,SH)];
      SHMin=Low[Lowest(NULL,0,MODE_LOW,Per,SH)];
      if (Close[SH]<SHMin+(SHMax-SHMin)*Otstup/100 && UD!=SH_SELL)
        {
         // Pop an Alert
         if (SH==1 && flagval1==0)
           {
            flagval1=1;
            flagval2=0;
            if (SoundON) Alert("BUY signal at Ask=",Ask,"\n Bid=",Bid,"\n Time=",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()),"\n Symbol=",Symbol()," Period=",Period());
           }
         BufU[SH]=Low[SH]-R*0.5; UD=SH_SELL;
        }
      if (Close[SH]>SHMax-(SHMax-SHMin)*Otstup/100 && UD!=SH_BUY)
        {
         // pop an Alert
         if (SH==1 && flagval2==0)
           {
            flagval2=1;
            flagval1=0;
            if (SoundON) Alert("SELL signal at Ask=",Ask,"\n Bid=",Bid,"\n Date=",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()),"\n Symbol=",Symbol()," Period=",Period());
           }
         BufD[SH]=High[SH]+R*0.5; UD=SH_BUY;
        }
     }
   return(0);
  }
//+------------------------------------------------------------------+