PriceSound_trendline

//+------------------------------------------------------------------+
//|                                         PriceSound_trendline.mq4 |
//|                                                             Roll |
//|                                                                  |
//+------------------------------------------------------------------+
/*
Èñòî÷íèê: èíäèêàòîð PriceAlert(v.1.1) îò api.http://codebase.mql4.com/download/17987. 
- Èíäèêàòîð PriceAlert ðàáîòàåò ñ ãîðèçîíòàëüíîé(ìè) ëèíèåé(ìè).
" Èíäèêàòîð àâòîìàòè÷åñêè îïðåäåëÿåò ìîìåíò ïåðåñå÷åíèÿ öåíîé ëèíèè è àêòèâèçèðóåò ñèãíàë "(api).

- Èíäèêàòîð PriceSound_trendline ðàáîòàåò ñ òðåíäîâîé(ìè) ëèíèåé(ìè).
Äëÿ ñèãíàëà  ïðåäïî÷òåíèå îòäàåòñÿ çâóêó,ïîýòîìó çâóêîâîé ôàéë äîëæåí áûòü èíäèâèäóàëüíûì è 
ïðîäîëæèòåëüíîñòüþ ïðîèãðûâàíèÿ 4-6 ñåê,à Alert()-û ïðîãðàììíî èñêëþ÷åíû(çàìåíåíû íà PlaySound()).
Íà ãðàôèêå ìîæåò íàõîäèòñÿ íåñêîëüêî òàêèõ òðåíäîâûõ ëèíèé ñ ðàçëè÷íûìè íàçâàíèÿìè
(íåñêîëüêî èíäèêàòîðîâ PriceSound_trendline).
*/
#property copyright "Roll"
#property indicator_chart_window

extern string UniqueName="Trend_Price 1";
extern color  LineColor=Pink;
extern int    LineWidth=2;
extern bool   Sound_Play=true;
extern string Sound="ready.wav";

double LastLevel;
double LastPrice;
double TradePoint;
int ArrShift;
string PipsTextName;
bool Active;

int init()
  {LastLevel=0;LastPrice=0;Active=true;return(0);}
//+------------------------------------------------------------------+
int deinit()
  {
   int reason=UninitializeReason();
   if(UninitializeReason()==REASON_REMOVE)ObjectDelete(UniqueName);
   ObjectDelete(PipsTextName);return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   if(IndicatorCounted()<20) return;

   if(Digits==3 || Digits==5) TradePoint=Point*10;
   else TradePoint=Point;
   PipsTextName=StringConcatenate(UniqueName," ","Pips");
   switch(Period())
     {
      case PERIOD_M1: if(Period()==PERIOD_M1) {ArrShift=10; break;}
      case PERIOD_M5: if(Period()==PERIOD_M5) {ArrShift=12; break;}
      case PERIOD_M15:if(Period()==PERIOD_M15){ArrShift=15; break;}
      case PERIOD_M30:if(Period()==PERIOD_M30){ArrShift=30; break;}
      case PERIOD_H1: if(Period()==PERIOD_H1) {ArrShift=50; break;}
      case PERIOD_H4: if(Period()==PERIOD_H4) {ArrShift=100;break;}
      case PERIOD_D1: if(Period()==PERIOD_D1) {ArrShift=200;break;}
      case PERIOD_W1: if(Period()==PERIOD_W1) {ArrShift=500;break;}
      case PERIOD_MN1:if(Period()==PERIOD_MN1){ArrShift=1000;break;}
     }
   if(ObjectFind(UniqueName)==-1)
     {
      double cp=LastLevel;
      if(cp==0)cp=Close[0]+(10+ArrShift)*TradePoint;
      ObjectCreate(UniqueName,OBJ_TREND,0,Time[20],cp,Time[0],cp);
      ObjectSetText(UniqueName,"Price alert level",0);
      ObjectSet(UniqueName,OBJPROP_COLOR,LineColor);
      ObjectSet(UniqueName,OBJPROP_WIDTH,LineWidth);
     }
   if(ObjectFind(PipsTextName)==-1)
     {
      cp=LastLevel;
      if(cp==0)cp=Close[0]+(10+ArrShift)*TradePoint;
      ObjectCreate(PipsTextName,OBJ_TEXT,0,Time[0],cp);
     }
   double newlevel=ObjectGetValueByShift(UniqueName,0);
   ObjectSet(PipsTextName,OBJPROP_TIME1,Time[0]);
   if(Active)
     {
      ObjectSet(UniqueName,OBJPROP_COLOR,LineColor);
      ObjectSetText(UniqueName,"Price sound level - Active",0);
      double Pips=MathAbs(NormalizeDouble((newlevel-Close[0])/TradePoint,Digits));
      if(Digits==3 || Digits==5)ObjectSetText(PipsTextName,DoubleToStr(Pips,1),14,"Terminal",LineColor);
      else ObjectSetText(PipsTextName,DoubleToStr(Pips,0),14,"Terminal",LineColor);
     }
   if(Close[0]>newlevel)ObjectSet(PipsTextName,OBJPROP_PRICE1,newlevel-ArrShift*TradePoint);
   if(Close[0]<newlevel)ObjectSet(PipsTextName,OBJPROP_PRICE1,newlevel+ArrShift*TradePoint);
   if(LastLevel!=newlevel)
     {
      LastLevel=newlevel;LastPrice=0;
      ObjectSetText(UniqueName,"Price sound level - Active",0);Active=true;
     }
   if(Active && LastPrice!=0 && ((LastPrice<LastLevel && Close[0]>=LastLevel) || 
      (LastPrice>LastLevel && Close[0]<=LastLevel)))
     {
      if(Sound_Play){PlaySound(Sound);}else Active=false;
      ObjectSetText(PipsTextName,"",14,"Terminal",LineColor);
      ObjectSetText(UniqueName,"Price sound level - Inactive",0);
      ObjectSet(UniqueName,OBJPROP_COLOR,Blue);
     }
   LastPrice=Close[0];return(0);
  }
//+------------------------------------------------------------------+