SHI_SilverTrendSig_002

//+------------------------------------------------------------------+
//|                                           SHI_SilverTrendSig.mq4 |
//|          Copyright © 2003, VIAC.RU, OlegVS, GOODMAN, 2005 Shurka |
//|                                                 shforex@narod.ru |
//|                                                                  |
//|                                                                  |
//| Ïèøó ïðîãðàììû íà çàêàç                                          |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, Shurka"
#property link      "http://shforex.narod.ru"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Lime
#property indicator_color2 Red
#define  SH_BUY   1
#define  SH_SELL  -1

//---- Âõîäíûå ïàðàìåòðû
extern int     AllBars=0;//Äëÿ ñêîëüêè áàðîâ ñ÷èòàòü. 0 - äëÿ âñåõ.
extern int     Otstup=30;//Îòñòóï.
extern double  Per=9;//Ïåðèîä.
extern int SoundON=1;
extern int EmailON=1;
extern string NameFileSound = "CableCH.wav";

//---- buffers
double val1[];
double val2[];
int flagval1 = 0;
int flagval2 = 0;

int            SH,NB,i,UD;
double         R,SHMax,SHMin;
double         BufD[];
double         BufU[];
//+------------------------------------------------------------------+
//| 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(0,233);
   SetIndexArrow(1,234);
   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) { BufU[SH]=Low[SH]-R*0.5; UD=SH_SELL; }
      if (Close[SH]>SHMax-(SHMax-SHMin)*Otstup/100 && UD!=SH_BUY) { BufD[SH]=High[SH]+R*0.5; UD=SH_BUY; }
      
   }
    //shift--;
    
    
    
    if (flagval1==1 && CurTime() > GlobalVariableGet("AlertTime"+Symbol()+Period()) && GlobalVariableGet("SignalType"+Symbol()+Period())!=OP_BUY) {
      if (SoundON==1) PlaySound (NameFileSound);
      if (EmailON==1) SendMail("SELL signal alert","SELL signal at Ask="+DoubleToStr(Ask,4)+", Bid="+DoubleToStr(Bid,4)+", Date="+TimeToStr(CurTime(),TIME_DATE)+" "+TimeHour(CurTime())+":"+TimeMinute(CurTime())+" Symbol="+Symbol()+" Period="+Period());
            GlobalVariableSet("SignalType"+Symbol()+Period(),OP_BUY);
   }
   
   if (flagval2==1 && CurTime() > GlobalVariableGet("AlertTime"+Symbol()+Period()) && GlobalVariableGet("SignalType"+Symbol()+Period())!=OP_SELL) {
      if (SoundON==1) PlaySound (NameFileSound);
      if (EmailON==1) SendMail("BUY signal alert","BUY signal at Ask="+DoubleToStr(Ask,4)+", Bid="+DoubleToStr(Bid,4)+", Date="+TimeToStr(CurTime(),TIME_DATE)+" "+TimeHour(CurTime())+":"+TimeMinute(CurTime())+" Symbol="+Symbol()+" Period="+Period());
      
   
   return(0);