Stoch Crossing

//+------------------------------------------------------------------+
//|                Stoch Crossing.mq4 modified from                  |
//+------------------------------------------------------------------+
//|                                         EMA-Crossover_Signal.mq4 |
//|         Copyright © 2005-07, Jason Robinson (jnrtrading)         |
//|                   http://www.jnrtading.co.uk                     |
//+------------------------------------------------------------------+

/*
  +------------------------------------------------------------------+
  | Allows you to enter two ema periods and it will then show you at |
  | Which point they crossed over. It is more usful on the shorter   |
  | periods that get obscured by the bars / candlesticks and when    |
  | the zoom level is out. Also allows you then to remove the emas   |
  | from the chart. (emas are initially set at 5 and 6)              |
  +------------------------------------------------------------------+
*/   
#property copyright "Copyright © 2005-07, Jason Robinson (jnrtrading)"
#property link      "http://www.jnrtrading.co.uk/"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 DarkGreen
#property indicator_width1 3
#property indicator_color2 Red
#property indicator_width2 3

extern string note1 = "Stochastic settings";
extern string note2 = "default = Stoch(30,10,10)";
extern int       KPeriod1     =  30;
extern int       DPeriod1     =  10;
extern int       Slowing1     =  10;
extern string note3 = "0=sma, 1=ema, 2=smma, 3=lwma";
extern int       MAMethod1    =   0;
extern string note4 = "0=high/low, 1=close/close";
extern int       PriceField1  =   1;

extern string note5 = "--------------------------------------------";
extern string note6 = "Arrow Type";
extern string note7 = "0=Thick, 1=Thin, 2=Hollow, 3=Round";
extern string note8 = "4=Fractal, 5=Diagonal Thin";
extern string note9 = "6=Diagonal Thick, 7=Diagonal Hollow";
extern string note10 = "8=Thumb, 9=Finger";
extern int ArrowType=3;
extern string note11 = "--------------------------------------------";
extern string note12 = "turn on Alert = true; turn off = false";
extern bool AlertOn = true;
extern string note13 = "--------------------------------------------";
extern string note14 = "send Email Alert = true; turn off = false";
extern bool SendAnEmail=false;
extern string note15 = "---------------------------------- Try";
extern string note16 = "GBPJPY M15 chart Stoch(30,10,10)";

double CrossUp[];
double CrossDown[];

string AlertPrefix;
string GetTimeFrameStr() {
   switch(Period())
   {
      case 1 : string TimeFrameStr="M1"; break;
      case 5 : TimeFrameStr="M5"; break;
      case 15 : TimeFrameStr="M15"; break;
      case 30 : TimeFrameStr="M30"; break;
      case 60 : TimeFrameStr="H1"; break;
      case 240 : TimeFrameStr="H4"; break;
      case 1440 : TimeFrameStr="D1"; break;
      case 10080 : TimeFrameStr="W1"; break;
      case 43200 : TimeFrameStr="MN1"; break;
      default : TimeFrameStr=Period();
   } 
   return (TimeFrameStr);
   }

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   if (ArrowType == 0) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 233);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 234);
   }
   else if (ArrowType == 1) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 225);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 226);
   }
   else if (ArrowType == 2) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 241);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 242);
   }
   else if (ArrowType == 3) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 221);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 222);
   }
   else if (ArrowType == 4) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 217);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 218);
   }
   else if (ArrowType == 5) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 228);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 230);
   }
   else if (ArrowType == 6) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 236);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 238);
   }
   else if (ArrowType == 7) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 246);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 248);
   }
   else if (ArrowType == 8) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 67);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 68);
   }
   else if (ArrowType == 9) {
      SetIndexStyle(0,DRAW_ARROW);
      SetIndexArrow(0, 71);
      SetIndexStyle(1,DRAW_ARROW);
      SetIndexArrow(1, 72);
   }

   SetIndexBuffer(0, CrossUp);
   SetIndexBuffer(1, CrossDown);
   AlertPrefix=Symbol()+" ("+GetTimeFrameStr()+"):  ";
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 

//----
   return(0);
  }
//+------------------------------------------------------------------+
bool NewBar()
{
   static datetime lastbar;
   datetime curbar = Time[0];
   if(lastbar!=curbar)
   {
      lastbar=curbar;
      return (true);
   }
   else
   {
      return(false);
   }
}   
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start() {
   int limit, i, counter;
   double stochastic1now, stochastic2now, stochastic1previous, stochastic2previous, stochastic1after, stochastic2after;
   double Range, AvgRange;
   int counted_bars=IndicatorCounted();
//---- check for possible errors
   if(counted_bars<0) return(-1);
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;

   limit=Bars-counted_bars;
   
   for(i = 0; i <= limit; i++) {
   
      counter=i;
      Range=0;
      AvgRange=0;
      for (counter=i ;counter<=i+9;counter++)
      {
         AvgRange=AvgRange+MathAbs(High[counter]-Low[counter]);
      }
      Range=AvgRange/10;      
      
      stochastic1now = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i);
      stochastic1previous = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i+1);
      stochastic1after = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i-1);
      stochastic2now = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i);
      stochastic2previous = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i+1);
      stochastic2after = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i-1);
            
      if ((stochastic1now > stochastic2now) && (stochastic1previous < stochastic2previous) && (stochastic1after > stochastic2after)) {
                   CrossUp[i] = Low[i] - Range*1.5;
                   if (AlertOn && NewBar()) {
                      Alert(AlertPrefix+"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses UP %D\nBUY signal @ Ask = ",Ask,"; Bid = ",Bid,"\nDate & Time = ",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()));
                   }   
              	    if (SendAnEmail && NewBar()) {
                      SendMail(AlertPrefix,"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses UP %D\nBUY signal @ Ask = "+DoubleToStr(Ask,4)+", Bid = "+DoubleToStr(Bid,4)+", Date & Time = "+TimeToStr(CurTime(),TIME_DATE)+" "+TimeHour(CurTime())+":"+TimeMinute(CurTime()));
              	    }
      }
         
      if ((stochastic1now < stochastic2now) && (stochastic1previous > stochastic2previous) && (stochastic1after < stochastic2after)) {
                 CrossDown[i] = High[i] + Range*1.5;
                   if (AlertOn && NewBar()){
                      Alert(AlertPrefix+"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses DOWN %D\nSELL signal @ Ask = ",Ask,"; Bid = ",Bid,"\nDate & Time = ",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()));
                   }
              	    if (SendAnEmail && NewBar()) {
                      SendMail(AlertPrefix,"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses DOWN %D\nSELL signal @ Ask = "+DoubleToStr(Ask,4)+", Bid = "+DoubleToStr(Bid,4)+", Date & Time = "+TimeToStr(CurTime(),TIME_DATE)+" "+TimeHour(CurTime())+":"+TimeMinute(CurTime()));
              	    }
      }

   }
   return(0);
}