//+------------------------------------------------------------------+
//|                                     Pattern Recognition v1.0     |
//|          (complete rewrite and name change of pattern alert)     |
//|                                                                  |
//|                 Copyright © 2005, Jason Robinson                 |
//|                  (jasonrobinsonuk,  jnrtrading)                  |
//|                   http://www.jnrtrading.co.uk                    |
//|                                                                  |
//|      This is still work in progress and needs LOTS of testing    |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, Jason Robinson (jnrtrading)."
#property link      "http://www.jnrtrading.co.uk"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Yellow
#property indicator_color2 Blue

extern bool Show_Alert = false;
extern int  Pointer_Offset = 9;
extern int  High_Offset = 10;

extern bool Display_ShootStar = true;
extern bool Show_ShootStar_Alert = true;
extern int  Offset_ShootStar = 12;
extern color Color_ShootStar = Green;
extern int Text_ShootStar = 8;

extern bool Display_Hammer = true;
extern bool Show_Hammer_Alert = true;
extern int  Offset_Hammer = 6;
extern color Color_Hammer = Green;
extern int Text_Hammer = 8;
extern double Candle_WickBody_Percent=0.90;
extern int CandleLength=0.21;

//---- buffers
double upArrow[];
double downArrow[];


//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init() {

//---- indicators
   
   SetIndexStyle(0,DRAW_ARROW, EMPTY);
   SetIndexArrow(0,234);
   SetIndexBuffer(0, downArrow);
      
   SetIndexStyle(1,DRAW_ARROW, EMPTY);
   SetIndexArrow(1,233);
   SetIndexBuffer(1, upArrow);
   
   
      
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit() {
   ObjectsDeleteAll(0, OBJ_TEXT);
   return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start(){

   double Range, AvgRange;
   int counter, setalert;
   static datetime prevtime = 0;
   int shift;
   int shift1;
   int shift2;
   int shift3;
   int shift4;
   string pattern, period;
   int setPattern = 0;
   int alert = 0;
   int arrowShift;
   int textShift;
   double O, O1, O2, C, C1, C2, C3, L, L1, L2, L3, H, H1, H2, H3;
   double CL, CLmin, CL1, CL2, BL, BLa, BL90, BL1, BL2, UW, UWa, UW1, UW2, LW, LWa, LW1, LW2, BodyHigh, BodyLow;
   BodyHigh = 0;
   BodyLow = 0;
   double HW, SW;
     
   if(prevtime == Time[0]) {
      return(0);
   }
   prevtime = Time[0];
   
   switch (Period()) {
      case 1:
         period = "M1";
         break;
      case 5:
         period = "M5";
         break;
      case 15:
         period = "M15";
         break;
      case 30:
         period = "M30";
         break;      
      case 60:
         period = "H1";
         break;
      case 240:
         period = "H4";
         break;
      case 1440:
         period = "D1";
         break;
      case 10080:
         period = "W1";
         break;
      case 43200:
         period = "MN";
         break;
   }
   
   for (shift = 0; shift < Bars; shift++) {
      
      setalert = 0;
      counter=shift;
      Range=0;
      AvgRange=0;
      for (counter=shift ;counter<=shift+9;counter++) {
         AvgRange=AvgRange+MathAbs(High[counter]-Low[counter]);
      }
      Range=AvgRange/10;
      shift1 = shift + 1;
      shift2 = shift + 2;
      shift3 = shift + 3;
      shift4 = shift + 4;
      
      
      O = Open[shift1];
      O1 = Open[shift2];
      O2 = Open[shift3];
      H = High[shift1];
      H1 = High[shift2];
      H2 = High[shift3];
      H3 = High[shift4];
      L = Low[shift1];
      L1 = Low[shift2];
      L2 = Low[shift3];
      L3 = Low[shift4];
      C = Close[shift1];
      C1 = Close[shift2];
      C2 = Close[shift3];
      C3 = Close[shift4];
      if (O>C) {
         BodyHigh = O;
         BodyLow = C;  }
      else {
         BodyHigh = C;
         BodyLow = O; }
      CL = High[shift1]-Low[shift1];
      CL1 = High[shift2]-Low[shift2];
      CL2 = High[shift3]-Low[shift3];
      BL = Open[shift1]-Close[shift1];
      UW = High[shift1]-BodyHigh;
      LW = BodyLow-Low[shift1];
      BLa = MathAbs(BL);
      BL90 = BLa*Candle_WickBody_Percent;
    
    if (UW>LW) {
        HW = UW;
        SW = LW;  }
    else {
        HW = LW;
        SW = UW;  }    
            
         
 // Bearish Patterns  
 
      // Check for Bearish Shooting Star
         if ((L1>=L2)){
         if ((HW>BLa)&& ((SW/CL)<0.12) && (LW>(2*UW))  ) {
         if (Display_ShootStar == true)  {
            ObjectCreate(GetName(shift), OBJ_TEXT, 0, Time[shift1], High[shift1] + (Pointer_Offset+Offset_ShootStar+High_Offset)*Point);
            ObjectSetText(GetName(shift), "*", Text_ShootStar, "Times New Roman", Color_ShootStar);
            downArrow[shift1] = High[shift1] + (Pointer_Offset*Point);
         }
         }
         if (Show_ShootStar_Alert) {
         if (setalert == 0 && Show_Alert == true) {
            pattern = "Shooting Star 2";
            setalert = 1;
         }
         }
      }
    
     
 // End of Bearish Patterns
   
 // Bullish Patterns
   
      // Check for Bullish Hammer   
      if ((L1<=L2))  {
      if ((UW>BLa)&&((LW/CL)<0.12) && (UW>(2*LW))   )  {
         if (Display_Hammer == true)  {
            ObjectCreate(GetName(shift), OBJ_TEXT, 0, Time[shift1], Low[shift1] - (Pointer_Offset+Offset_Hammer)*Point);
            ObjectSetText(GetName(shift), "*", Text_Hammer, "Times New Roman", Color_Hammer);
            upArrow[shift1] = Low[shift1] - (Pointer_Offset*Point);
         }
         }
         if (Show_Hammer_Alert) {
         if (setalert == 0 && Show_Alert == true) {
            pattern = "Bullish Hammer 2";
            setalert = 1;
         }
         }
      }
      
   
     
      
 // End of Bullish Patterns          
      if (setalert == 1 && shift == 0) {
         Alert(Symbol(), " ", period, " ", pattern);
         setalert = 0;
      }
   } // End of for loop
     
   
      
   return(0);
}
//+------------------------------------------------------------------+

string GetName(int shift)
{
  return(DoubleToStr(Time[shift],0));
}