//+------------------------------------------------------------------+
//|                                      Goldminer Trend Signal .mq4 |
//|                      Copyright © 2008, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2008, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Magenta
#property indicator_color2 Aqua

//---- input parameters
extern int RISK=3;
extern int CountBars=1000;
extern bool alert = true;

//---- buffers
double val1[];
double val2[];

double     SignalBuffer[];
 



//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicator line
   IndicatorBuffers(2);
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0,234);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1,233);
   SetIndexBuffer(0,val1);
   SetIndexBuffer(1,val2);

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| ASCTrend1sig                                                     |
//+------------------------------------------------------------------+
int start()
  {
   if (CountBars>=1000) CountBars=950;
   SetIndexDrawBegin(0,Bars-CountBars+11+1);
   SetIndexDrawBegin(1,Bars-CountBars+11+1);
   int i,shift,counted_bars=IndicatorCounted();
   int Counter,i1,value10,value11;
   double value1,x1,x2;
   double value2,value3;
   double TrueCount,Range,AvgRange,MRO1,MRO2;
   double Table_value2[1000];
   
   value10=3+RISK*2;
   x1=67+RISK;
   x2=33-RISK;
   value11=value10;
//----
   if(Bars<=11+1) return(0);
//---- initial zero
   if(counted_bars<11+1)
   {
      for(i=1;i<=0;i++) val1[CountBars-i]=0.0;
      for(i=1;i<=0;i++) val2[CountBars-i]=0.0;
   }
//----
   shift=CountBars-11-1;
   while(shift>=0)
     {
     
   Counter=shift;
	Range=0.0;
	AvgRange=0.0;
	for (Counter=shift; Counter<=shift+9; Counter++) AvgRange=AvgRange+MathAbs(High[Counter]-Low[Counter]);
		
	Range=AvgRange/10;
	Counter=shift;
	TrueCount=0;
	while (Counter<shift+9 && TrueCount<1)
		{if (MathAbs(Open[Counter]-Close[Counter+1])>=Range*2.0) TrueCount=TrueCount+1;
		Counter=Counter+1;
		}
	if (TrueCount>=1) {MRO1=Counter;} else {MRO1=-1;}
	Counter=shift;
	TrueCount=0;
	while (Counter<shift+6 && TrueCount<1)
		{if (MathAbs(Close[Counter+3]-Close[Counter])>=Range*4.6) TrueCount=TrueCount+1;
		Counter=Counter+1;
		}
	if (TrueCount>=1) {MRO2=Counter;} else {MRO2=-1;}
	if (MRO1>-1) {value11=3;} else {value11=value10;}
	if (MRO2>-1) {value11=4;} else {value11=value10;}
	value2=100-MathAbs(iWPR(NULL,0,value11,shift)); // PercentR(value11=9)
	Table_value2[shift]=value2;
	val1[shift]=0;
	val2[shift]=0;
	value3=0;
	if (value2<x2)
		{i1=1;
		while (Table_value2[shift+i1]>=x2 && Table_value2[shift+i1]<=x1){i1++;}
		if (Table_value2[shift+i1]>x1) 
			{
			value3=High[shift]+Range*0.5;
			val1[shift]=value3;
			
			} 
		}
	if (value2>x1)
		{i1=1;
		while (Table_value2[shift+i1]>=x2 && Table_value2[shift+i1]<=x1){i1++;}
		if (Table_value2[shift+i1]<x2) 
			{
			value3=Low[shift]-Range*0.5;
			val2[shift]=value3;
			}
		}

//Mulai Program Alert

   static datetime lastalertUp=0;
   string   alertmessage = " ------ " ; 

   		if (alert==true && i == 0 && lastalertUp != Time[0]) 
   		   {
			if ((val1[i]<val2[i]))
			   {
				lastalertUp = Time[0];
				Alert("Golminer Trend Signal Alert BUY  ", Symbol(), "  ", Period());
				if (StringLen("alert.wav") > 0)
					PlaySound("alert.wav");
			   }
			if ((val1[i]>val2[i]) )
			   {
				lastalertUp = Time[0];
				Alert("Golminer Trend Signal Alert SELL  ", Symbol(), "  ", Period());
				if (StringLen("alert.wav") > 0)
					PlaySound("alert.wav");
			   }

			   }
//Akhir Program Alert

      shift--;
     }
     

   return(0);
  }
//+------------------------------------------------------------------+