//+---------------------------------------------------------------------+
//| Indicator-advisor based on Demark threory with additions            |
//| Some part of the code was taken from Ind-TD-DeMark-3-1.mq4 [Kara ©] |
//+---------------------------------------------------------------------+
#property copyright "GreenDog"
#property link      "krot@inbox.ru" // v2.3
//----
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Blue
//----
extern int  showBars=200;      // if showBars= 0 so the indicator will be shown for all the chart
extern int  LevDP=2;           // Demar Pint Levels; 2 = central bar will be higher (lower) then 2 bars on the left side and 2 bars on the right one.
extern int  qSteps=1;          // number of steps/ no more than 3
extern int  BackStep=0;        // number of staps back
extern int  startBar=0;        // ifstartBar=0 so we have recommendation for the current bar, if 1 - for possible next bar
extern bool TrendLine=true;    // false = no trend lines
extern bool HorizontLine=true; // true = break levels
extern bool ChannelLine=false; // true = channels which is parallel with trend lines 
extern bool TakeLines=true;    // true = take profit lines
extern bool Comments=true;     // true = comments
extern int  Trend=0;           // 1 = for UpTrendLines only, -1 = for DownTrendLines only, 0 = for all TrendLines
//----
double Buf1[];
double Buf2[];
//----
string Col[]={"Red","DarkBlue","Coral","DodgerBlue","SaddleBrown","MediumSeaGreen"};
int ColNum[]={Red,DeepSkyBlue,Coral,Aqua,SaddleBrown,MediumSeaGreen};
int qPoint=0;              // переменная для нормализации цены
int qBars; double qTime=0; // переменные для ликвидации глюков при загрузке
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int init()
  {
   qBars=Bars;
   qSteps=MathMin(3,qSteps);
   while(NormalizeDouble(Point,qPoint)==0)qPoint++;
   int code=161; string Rem="DLines © GameOver";
   IndicatorShortName(Rem);
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(0,code);
   SetIndexArrow(1,code);
   SetIndexBuffer(0,Buf1);
   SetIndexBuffer(1,Buf2);
   SetIndexEmptyValue(0,0.0);
   SetIndexEmptyValue(1,0.0);
   SetIndexLabel(0,Rem);
   SetIndexLabel(1,Rem);
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  int deinit() 
  {
   Comment("");
   ArrayInitialize(Buf1,0.0);
   ArrayInitialize(Buf2,0.0);
     for(int i=1;i<=LevDP;i++)
     {
      ObjectDelete("HA_"+i);ObjectDelete("LA_"+i);
      ObjectDelete("HL_"+i);ObjectDelete("LL_"+i);
      ObjectDelete("HHL_"+i);ObjectDelete("HLL_"+i);
      ObjectDelete("HCL_"+i);ObjectDelete("LCL_"+i);
      for(int j=0;j<4;j++) {ObjectDelete("HTL_"+i+j);ObjectDelete("LTL_"+i+j);}
     }
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  int start()
  {
   if (qBars!=Bars){ deinit(); Sleep(1000); qBars=Bars; qTime=0; return(0);}
   if (qTime==Time[0]) return(0); qTime=Time[0]; // запускаеца тока на 1м тике
   // заполнили и отобразили точки демарка
   if (showBars==0) showBars=Bars-LevDP;
     for(int cnt=showBars;cnt>LevDP;cnt--) 
     {
      Buf1[cnt]=DemHigh(cnt,LevDP);
      Buf2[cnt]=DemLow(cnt,LevDP);
     }
   string Comm;
   Comm="Trend Line["+On(TrendLine)+"]; Channel ["+On(ChannelLine)+
   "]; Breakout level ["+On(HorizontLine)+"]; Targets ["+On(TakeLines)+"]\n";
   for(cnt=1;cnt<=qSteps;cnt++) Comm=Comm+(TDMain(cnt));
   Comm=Comm+"———— © GameOver ————";
   if (Comments==true) Comment(Comm);
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  string TDMain(int Step)
  {
   int H1,H2,L1,L2,qExt,i,col;
   double tmp,qTL,qLevel,HT[4],LT[4];
   bool isHitch;
   string Comm="»—»—» Step "+Step+" of "+qSteps+" (BackStep "+BackStep+")\n",Text,Rem,qp;
   // для DownTrendLines
     if (Trend<=0)
     {
      Comm=Comm+"» "+Col[Step*2-2]+" DownTrendLine ";
      col=ColNum[Step*2-2];
      H1=GetTD(Step+BackStep,Buf1);
      H2=GetNextHighTD(H1);
      qTL=(High[H2]-High[H1])/(H2-H1);
      qExt=Lowest(NULL,0,MODE_LOW,H2-H1-1,H1+1); // локальный минимум между точками
      qLevel=High[H2]-qTL*(H2); if (Step+BackStep==1) qLevel=qLevel-qTL*startBar;
      if (H1<0 || H2<0) Comm=Comm+"not enough points on the chart for construction\n";
        else 
        {
         Comm=Comm+"["+DoubleToStr(High[H2],qPoint)+"»"+DoubleToStr(High[H1],qPoint)+"]";
         Comm=Comm+"; Level "+DoubleToStr(qLevel,qPoint);
           if (Step+BackStep==1) 
           {
            if (startBar>0) Comm=Comm+"; Future Bar "+UpHitch(-1,qLevel);
            else Comm=Comm+"; Last Bar "+UpHitch(startBar,qLevel);
           }
         Comm=Comm+"\n";
         // Анализ - был ли пробой трендовой линии
         i=H1;isHitch=false;Text="";
           while(i>0 && isHitch==false)
           {
            tmp=High[H2]-qTL*(H2-i);
            Rem="HA_"+Step;
              if (High[i]>tmp)
              {
               qp=UpHitch(i,tmp);
                 if (qp!="")
                 {
                  isHitch=true;
                  Text=Text+"Source "+DoubleToStr(tmp,qPoint)+" "+qp;
                  ObjectCreate(Rem,OBJ_ARROW,0,0,0,0,0);
                  ObjectSet(Rem,OBJPROP_COLOR,col);
                  ObjectSet(Rem,OBJPROP_PRICE1,Low[i]-Point);
                  ObjectSet(Rem,OBJPROP_TIME1,Time[i]);
                  ObjectSet(Rem,OBJPROP_ARROWCODE,241);
                    while(i>0)
                    { // пробой отменен, если после пробоя был новый лоу или закрытие ниже
                     i--;
                       if (Low[i]<Low[qExt] || Close[i]<(Low[qExt]+(High[H1]-Low[qExt])*0.236))
                       {
                        Text=Text+" (cancel)";
                        ObjectSet(Rem,OBJPROP_PRICE1,Low[i]-Point);
                        ObjectSet(Rem,OBJPROP_TIME1,Time[i]);
                        ObjectSet(Rem,OBJPROP_ARROWCODE,251);
                        break;
                       }
                    }
                 }
               else 
               { Text=Text+"False "+DoubleToStr(tmp,qPoint)+"; "; ObjectDelete(Rem);}
              }
            i--;
           }
         if (Text=="") Text="No breakout";
         Comm=Comm+Text+"\n";
         // end analysis
         Rem="HL_"+Step; // собсно линия тренда
           if (TrendLine)
           {
            ObjectCreate(Rem,OBJ_TREND,0,0,0,0,0);
            ObjectSet(Rem,OBJPROP_TIME1,Time[H2]);ObjectSet(Rem,OBJPROP_TIME2,Time[H1]);
            ObjectSet(Rem,OBJPROP_PRICE1,High[H2]);ObjectSet(Rem,OBJPROP_PRICE2,High[H1]);
            ObjectSet(Rem,OBJPROP_COLOR,col);
            ObjectSet(Rem,OBJPROP_WIDTH,3-MathMin(2,Step));
           }
         else ObjectDelete(Rem);
         Rem="HHL_"+Step; // уровень пробоя линии тренда
           if (HorizontLine && (Step+BackStep)==1)
           {
            ObjectCreate(Rem,OBJ_HLINE,0,0,0,0,0);
            ObjectSet(Rem,OBJPROP_PRICE1,qLevel);
            ObjectSet(Rem,OBJPROP_COLOR,col);
           }
         else ObjectDelete(Rem);
         Rem="HCL_"+Step; // линия канала
           if (ChannelLine)
           {
            ObjectCreate(Rem,OBJ_TREND,0,0,0,0,0);
            ObjectSet(Rem,OBJPROP_TIME1,Time[qExt]);ObjectSet(Rem,OBJPROP_TIME2,Time[0]);
            ObjectSet(Rem,OBJPROP_PRICE1,Low[qExt]);ObjectSet(Rem,OBJPROP_PRICE2,Low[qExt]-qTL*qExt);
            ObjectSet(Rem,OBJPROP_COLOR,col);
           }
         else ObjectDelete(Rem);
         Rem="HTL_"+Step; // линии целей
           if (TakeLines)
           {
            HT[3]=Low[qExt]+(High[H1]-Low[qExt])*1.618-qLevel; //  доп уровень
            HT[0]=High[H2]-qTL*(H2-qExt)-Low[qExt];
            HT[1]=High[H2]-qTL*(H2-qExt)-Close[qExt];
            qExt=Lowest(NULL,0,MODE_CLOSE,H2-H1,H1);
            HT[2]=High[H2]-qTL*(H2-qExt)-Close[qExt];
            Comm=Comm+"Targets: ";
              for(i=0;i<4;i++)
              {
               qTL=NormalizeDouble(qLevel+HT[i],qPoint);
               ObjectCreate(Rem+i,OBJ_HLINE,0,0,0,0,0);
               ObjectSet(Rem+i,OBJPROP_PRICE1,qTL);
               ObjectSet(Rem+i,OBJPROP_STYLE,STYLE_DOT);
               ObjectSet(Rem+i,OBJPROP_COLOR,col);
               Comm=Comm+DoubleToStr(qTL,qPoint)+" ("+DoubleToStr(HT[i]/Point,0)+"p.) ";
              }
            Comm=Comm+"\n";
           }
           else 
           {
            for(i=0;i<4;i++) ObjectDelete(Rem+i);
           }
        }
     }
   // для UpTrendLines
     if (Trend>=0)
     {
      Comm=Comm+"» "+Col[Step*2-1]+" UpTrendLine ";
      col=ColNum[Step*2-1];
      L1=GetTD(Step+BackStep,Buf2);
      L2=GetNextLowTD(L1);
      qTL=(Low[L1]-Low[L2])/(L2-L1);
      qExt=Highest(NULL,0,MODE_HIGH,L2-L1-1,L1+1); // локальный минимум между точками
      qLevel=Low[L2]+qTL*L2; if (Step+BackStep==1) qLevel=qLevel+qTL*startBar;
      if (L1<0 || L2<0) Comm=Comm+"not enough points on the chart for construction\n";
        else 
        {
         Comm=Comm+"["+DoubleToStr(Low[L2],qPoint)+"»"+DoubleToStr(Low[L1],qPoint)+"]";
         Comm=Comm+"; Level "+DoubleToStr(qLevel,qPoint);
           if (Step+BackStep==1) 
           {
            if (startBar>0) Comm=Comm+"; Future Bar "+DownHitch(-1,qLevel);
            else Comm=Comm+"; Last Bar "+DownHitch(startBar,qLevel);
           }
         Comm=Comm+"\n";
         // Анализ - был ли пробой трендовой линии
         i=L1;isHitch=false;Text="";
           while(i>0 && isHitch==false)
           {
            tmp=Low[L2]+qTL*(L2-i);
            Rem="LA_"+Step;
              if (Low[i]<tmp)
              {
               qp=DownHitch(i,tmp);
                 if (qp!="")
                 {
                  isHitch=true;
                  Text=Text+"Source "+DoubleToStr(tmp,qPoint)+" "+qp;
                  ObjectCreate(Rem,OBJ_ARROW,0,0,0,0,0);
                  ObjectSet(Rem,OBJPROP_COLOR,col);
                  ObjectSet(Rem,OBJPROP_PRICE1,Low[i]-Point);
                  ObjectSet(Rem,OBJPROP_TIME1,Time[i]);
                  ObjectSet(Rem,OBJPROP_ARROWCODE,242);
                    while(i>0)
                    { // пробой отменен, если после пробоя был новый хай или закрытие выше
                     i--;
                       if (High[i]>High[qExt] || Close[i]>High[qExt]-(High[qExt]-Low[L1])*0.236)
                       {
                        Text=Text+" (cancel)";
                        ObjectSet(Rem,OBJPROP_PRICE1,Low[i]-Point);
                        ObjectSet(Rem,OBJPROP_TIME1,Time[i]);
                        ObjectSet(Rem,OBJPROP_ARROWCODE,251);
                        break;
                       }
                    }
                 }
               else { Text=Text+"False "+DoubleToStr(tmp,qPoint)+"; "; ObjectDelete(Rem);}
              }
            i--;
           }
         if (Text=="") Text="No breakout";
         Comm=Comm+Text+"\n";
         // end analysis
         Rem="LL_"+Step; // собсно линия тренда
           if (TrendLine==1) 
           {
            ObjectCreate(Rem,OBJ_TREND,0,0,0,0,0);
            ObjectSet(Rem,OBJPROP_TIME1,Time[L2]);ObjectSet(Rem,OBJPROP_TIME2,Time[L1]);
            ObjectSet(Rem,OBJPROP_PRICE1,Low[L2]);ObjectSet(Rem,OBJPROP_PRICE2,Low[L1]);
            ObjectSet(Rem,OBJPROP_COLOR,col);
            ObjectSet(Rem,OBJPROP_WIDTH,3-MathMin(2,Step));
           }
         else ObjectDelete(Rem);
         Rem="HLL_"+Step; // уровень пробоя линии тренда
           if (HorizontLine && (Step+BackStep)==1)
           {
            ObjectCreate(Rem,OBJ_HLINE,0,0,0,0,0);
            ObjectSet(Rem,OBJPROP_PRICE1,qLevel);
            ObjectSet(Rem,OBJPROP_COLOR,col);
           }
         else ObjectDelete(Rem);
         Rem="LCL_"+Step; // линия канала
           if (ChannelLine)
           {
            ObjectCreate(Rem,OBJ_TREND,0,0,0,0,0);
            ObjectSet(Rem,OBJPROP_TIME1,Time[qExt]);ObjectSet(Rem,OBJPROP_TIME2,Time[0]);
            ObjectSet(Rem,OBJPROP_PRICE1,High[qExt]);ObjectSet(Rem,OBJPROP_PRICE2,High[qExt]+qTL*qExt);
            ObjectSet(Rem,OBJPROP_COLOR,col);
           }
         else ObjectDelete(Rem);
         Rem="LTL_"+Step;
           if (TakeLines)
           { // линии целей
            LT[3]=qLevel-High[qExt]+(High[qExt]-Low[L1])*1.618; // доп уровень
            LT[0]=High[qExt]-qTL*(L2-qExt)-Low[L2];
            LT[1]=Close[qExt]-qTL*(L2-qExt)-Low[L2];
            qExt=Highest(NULL,0,MODE_CLOSE,L2-L1,L1);
            LT[2]=Close[qExt]-qTL*(L2-qExt)-Low[L2];
            Comm=Comm+"Targets: ";
              for(i=0;i<4;i++)
              {
               qTL=NormalizeDouble(qLevel-LT[i],qPoint);
               ObjectCreate(Rem+i,OBJ_HLINE,0,0,0,0,0);
               ObjectSet(Rem+i,OBJPROP_PRICE1,qTL);
               ObjectSet(Rem+i,OBJPROP_STYLE,STYLE_DOT);
               ObjectSet(Rem+i,OBJPROP_COLOR,col);
               Comm=Comm+DoubleToStr(qTL,qPoint)+" ("+DoubleToStr(LT[i]/Point,0)+"p.) ";
              }
            Comm=Comm+"\n";
           }
           else 
           {
            for(i=0;i<4;i++) ObjectDelete(Rem+i);
           }
        }
     }
   return(Comm);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  int GetTD(int P, double Arr[])
  {
   int i=0,j=0;
   while(j<P)
   {
    i++; while(Arr[i]==0)
    {
     i++;if(i>showBars-2)return(-1);
    } j++;
   }
   return(i);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  int GetNextHighTD(int P)
  {
   int i=P+1;
   while(Buf1[i]<=High[P])
   {
      i++;if(i>showBars-2)return(-1);
   }
   return(i);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  int GetNextLowTD(int P)
  {
   int i=P+1;
   while(Buf2[i]>=Low[P] || Buf2[i]==0)
   {
      i++;if(i>showBars-2)return(-1);
   }
   return(i);
  }
// рекурсивная проверка на условия Демарка (хай), возвращает значение или 0
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  double DemHigh(int cnt, int sh)
  {
     if (High[cnt]>=High[cnt+sh] && High[cnt]>High[cnt-sh]) 
     {
      if (sh>1) return(DemHigh(cnt,sh-1));
      else return(High[cnt]);
     }
   else return(0);
  }
// рекурсивная проверка на условия Демарка (лоу), возвращает значение или 0
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  double DemLow(int cnt, int sh)
  {
     if (Low[cnt]<=Low[cnt+sh] && Low[cnt]<Low[cnt-sh]) 
     {
      if (sh>1) return(DemLow(cnt,sh-1));
      else return(Low[cnt]);
     }
   else return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  string On(bool On)
  {
   if (On) return("on"); else return("off");
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  string UpHitch(int P, double qLevel){ // определение квалификаторов прорыва вверх
   string Comm="";
   if (Close[P+1]<Close[P+2]) Comm=Comm+" 1";
   if (P>=0 && Open[P]>qLevel) Comm=Comm+" 2";
   if (2*Close[P+1]-Low[P+1]<qLevel) Comm=Comm+" 3";
   if (Comm!="") Comm="[ Break Qualificator:"+Comm+" ]";
   return(Comm);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
  string DownHitch(int P, double qLevel){ // определение квалификаторов прорыва вниз
   string Comm="";
   if (Close[P+1]>Close[P+2]) Comm=Comm+" 1";
   if (P>=0 && Open[P]<qLevel) Comm=Comm+" 2";
   if (2*Close[P+1]-High[P+1]>qLevel) Comm=Comm+" 3";
   if (Comm!="") Comm="[ Break Qualificator:"+Comm+" ]";
   return(Comm);
  }
//+------------------------------------------------------------------+