Support_Resistance v1

//+------------------------------------------------------------------+
//|                                             SUPRESMultiFrame.mq4 |
//|                                                                  |
//|                                                            RD    |
//+------------------------------------------------------------------+
#property copyright "RD"
#property link      "marynarz15@wp.pl"
#property indicator_chart_window
#define MaxObject    1000
//---- indicator parameters
extern int TimeFrame=5;
extern int BarsMax=144;
extern int ExtDepth=13;
extern int ExtDeviation=1;
extern int ExtBackstep=5;
extern bool DeleteObjectsOnExit=true;
extern color LineColor=Red;
extern int linewidth = 1; 
extern int linestyle = 2; 
//-----------------------
double ExtMapBuffer[];
double ExtMapBuffer2[];
int SUPRESCount=0;
//int linewidth,linestyle;
string NamePattern;
//color LineColor;


//+------------------------------------------------------------------+
//|                           Delete objects                         |
//+------------------------------------------------------------------+
int DeleteSupRes()
   {     
      int ObjectCount=ObjectsTotal();
      string names[MaxObject];
      for (int i=0; i<ObjectCount;i++)
         names[i]=ObjectName(i);
      for (i=0; i<ObjectCount;i++) 
      {
         string objname=names[i];
         objname=StringSubstr(objname,0,StringLen(NamePattern));
         if (objname!=NamePattern || ObjectType(names[i])!=OBJ_TREND)
               names[i]="";              
      }
      for (i=0; i<ObjectCount;i++)
      { 
         if (names[i]!="") { 
         ObjectDelete(names[i]);}
      }   
      return(0);
   }

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   IndicatorBuffers(2);
   SetIndexBuffer(0,ExtMapBuffer);
   SetIndexBuffer(1,ExtMapBuffer2);
   SetIndexEmptyValue(0,0.0);
   ArraySetAsSeries(ExtMapBuffer,true);
   ArraySetAsSeries(ExtMapBuffer2,true);
   
   NamePattern=DoubleToStr(TimeFrame,0)+" SUPRES ";
   if (BarsMax<55) BarsMax=55;
   
   DeleteSupRes();
   return(0);
  }
  
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
      if (DeleteObjectsOnExit) DeleteSupRes(); 
      return(0);
  }   
  
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int start()
  {
   int    shift, back,lasthighpos,lastlowpos;
   double val,res;
   double curlow,curhigh,lasthigh,lastlow;
   string objectname;
   
   if(BarsMax==0) {BarsMax=Bars/2;}// return(0);
   for(shift=iBars(NULL,TimeFrame)-ExtDepth; shift>=0; shift--)
     {
      val=iLow(NULL,TimeFrame,Lowest(NULL,TimeFrame,MODE_LOW,ExtDepth,shift));
      if(val==lastlow) val=0.0;
      else 
        { 
         lastlow=val; 
         if((iLow(NULL,TimeFrame,shift)-val)>(ExtDeviation*Point)) val=0.0;
         else
           {
            for(back=1; back<=ExtBackstep; back++)
              {
               res=ExtMapBuffer[shift+back];
               if((res!=0)&&(res>val)) ExtMapBuffer[shift+back]=0.0; 
              }
           }
        } 
      ExtMapBuffer[shift]=val;
      //--- high
      val=iHigh(NULL,TimeFrame,Highest(NULL,TimeFrame,MODE_HIGH,ExtDepth,shift));
      if(val==lasthigh) val=0.0;
      else 
        {
         lasthigh=val;
         if((val-iHigh(NULL,TimeFrame,shift))>(ExtDeviation*Point)) val=0.0;
         else
           {
            for(back=1; back<=ExtBackstep; back++)
              {
               res=ExtMapBuffer2[shift+back];
               if((res!=0)&&(res<val)) ExtMapBuffer2[shift+back]=0.0; 
              } 
           }
        }
      ExtMapBuffer2[shift]=val;
     }

   // final cutting 
   lasthigh=-1; lasthighpos=-1;
   lastlow=-1;  lastlowpos=-1;

   for(shift=iBars(NULL,TimeFrame)-ExtDepth; shift>=0; shift--)
     {
      curlow=ExtMapBuffer[shift];
      curhigh=ExtMapBuffer2[shift];
      if((curlow==0)&&(curhigh==0)) continue;
      //---
      if(curhigh!=0)
        {
         if(lasthigh>0) 
           {
            if(lasthigh<curhigh) ExtMapBuffer2[lasthighpos]=0;
            else ExtMapBuffer2[shift]=0;
           }
         //---
         if(lasthigh<curhigh || lasthigh<0)
           {
            lasthigh=curhigh;
            lasthighpos=shift;
           }
         lastlow=-1;
        }
      //----
      if(curlow!=0)
        {
         if(lastlow>0)
           {
            if(lastlow>curlow) ExtMapBuffer[lastlowpos]=0;
            else ExtMapBuffer[shift]=0;
           }
         //---
         if((curlow<lastlow)||(lastlow<0))
           {
            lastlow=curlow;
            lastlowpos=shift;
           } 
         lasthigh=-1;
        }
     }
  
   for(shift=iBars(NULL,TimeFrame)-1; shift>=0; shift--)
     {
      if(shift>=iBars(NULL,TimeFrame)-ExtDepth) ExtMapBuffer[shift]=0.0;
      else
        {
         res=ExtMapBuffer2[shift];
         if(res!=0.0) ExtMapBuffer[shift]=res;
        }
     }
 ///////////////////////// Lines creation /////////////////   
   int count=0;
   double TempBufferPrice[MaxObject];   
   int TempBufferBar[MaxObject];
   string ObjectNames[MaxObject];
 //////////////////////// lists of lines //////////////////  
   for(shift=BarsMax; shift>0; shift--)
       if (ExtMapBuffer[shift]>0)
         {
            count++;
            TempBufferPrice[count-1]=ExtMapBuffer[shift];
            TempBufferBar[count-1]=shift;
         }   
   for(int i=0; i<count; i++)   
         ObjectNames[i]= TimeToStr(iTime(NULL,TimeFrame,TempBufferBar[i]),TIME_DATE|TIME_MINUTES);

 /////// deleting pending objects ///////////////     
   int ObjectForDeleteCount=0;
   string ObjectsForDelete[MaxObject];
   for(i=0; i<ObjectsTotal(); i++)   
      {
         objectname=ObjectName(i);
         if (StringSubstr(objectname,0,StringLen(NamePattern))==NamePattern)
            {
               ObjectForDeleteCount++;
               ObjectsForDelete[ObjectForDeleteCount-1]=objectname;
            }   
      }
   for(i=0; i<count-2; i++)
      {
         objectname=ObjectNames[i];
            for(int j=0; j<ObjectForDeleteCount; j++)
                 if(ObjectsForDelete[j]==objectname)
                  {
                      ObjectsForDelete[j]="";    
                      break;
                  }     
      }
   for(j=0; j<ObjectForDeleteCount; j++)
      if (ObjectsForDelete[j]!="")
      { 
         ObjectDelete(ObjectsForDelete[j]);
      }
 ////////////// objects plotting /////////////////  
   for(i=0; i<count; i++)   
      {
         if (ObjectFind(ObjectNames[i])==-1)
            {
                ObjectCreate(ObjectNames[i],OBJ_TREND,0,iTime(NULL,TimeFrame,TempBufferBar[i]),TempBufferPrice[i],
                                 iTime(NULL,TimeFrame,TempBufferBar[i])+10080*60,TempBufferPrice[i]);
                ObjectSet(ObjectNames[i],OBJPROP_WIDTH,linewidth); 
                ObjectSet(ObjectNames[i],OBJPROP_STYLE,linestyle); 
                ObjectSet(ObjectNames[i],OBJPROP_COLOR,LineColor);
                ObjectSet(ObjectNames[i],OBJPROP_RAY,True);
                ObjectSetText(ObjectNames[i],ObjectNames[i]);
            } 
      }        


  return(0);
  }