RSI TrendMT4

ÿþ//+------------------------------------------------------------------+

//|                                                    RSI_Trend.mq4 |

//|                                  Copyright 2015, Dodonov Vitaly. |

//|                            https://login.mql5.com/ru/users/mql_5 |

//+------------------------------------------------------------------+

#property copyright "Copyright 2015, Dodonov Vitaly."

#property link      "https://login.mql5.com/ru/users/mql_5"

#property version   "1.20"

#property description "RSI TrendMT4"

//#property icon "\\Images\\rsi_trend.ico";

#property strict

#property indicator_separate_window

#property indicator_minimum 0

#property indicator_maximum 1

#property indicator_buffers 2

#property indicator_plots   2

//--- plot r1

#property indicator_label1  "r1"

#property indicator_type1   DRAW_HISTOGRAM

#property indicator_color1  clrGreen

#property indicator_style1  STYLE_SOLID

#property indicator_width1  5

//--- plot r2

#property indicator_label2  "r2"

#property indicator_type2   DRAW_HISTOGRAM

#property indicator_color2  clrRed

#property indicator_style2  STYLE_SOLID

#property indicator_width2  5



//+------------------------------------------------------------------+

//|                   Alert message                                  |

//+------------------------------------------------------------------+

enum ENUM_ALERT

  {

   ALERT_ON=0,

   ALERT_OFF=1

  };

//+------------------------------------------------------------------+

//|              Push Notification                                   |

//+------------------------------------------------------------------+

enum ENUM_PUSH

  {

   PUSH_ON=0,

   PUSH_OFF=1

  };

//+------------------------------------------------------------------+

//|                    Send email message                            |

//+------------------------------------------------------------------+

enum ENUM_MAIL

  {

   MAIL_ON=0,

   MAIL_OFF=1

  };

//+------------------------------------------------------------------+

//|                     Play sound                                   |

//+------------------------------------------------------------------+

  

enum ENUM_SOUND

  {

   SOUND_ON=0,

   SOUND_OFF=1

  }; 

//+------------------------------------------------------------------+

//|                                                                  |

//+------------------------------------------------------------------+

    

//--- input parameters

   input string n1 = "||+---------- Parameters ---------+||";

   input int       Rsi_period=12;

   input string    SymbolPrefix = ""; 

   input string    SymbolPostfix = "";

   input string n2 = "||+---------- Nitifications ---------+||";

   input ENUM_ALERT  SoundAlert              = ALERT_OFF;

   input ENUM_PUSH   PushNotification        = PUSH_OFF;

   input ENUM_MAIL   EmailAlert              = MAIL_OFF;

   input ENUM_SOUND  Sound                   = SOUND_OFF;

   input string      SoundFile               = "Alert.wav";

//--- indicator buffers

   double         r1Buffer[];

   double         r2Buffer[];

//--- variables

bool up,dw;

double level_up,level_dw;

string trd_t1,trd_t2;

string symb;

int timeframe;

//+------------------------------------------------------------------+

//| Custom indicator initialization function                         |

//+------------------------------------------------------------------+

int OnInit()

  {

//--- indicator buffers mapping

   SetIndexBuffer(0,r1Buffer);

   SetIndexBuffer(1,r2Buffer);

//--- trend directions   

   up=false;

   dw=false;

//--- rsi levels   

   level_dw=29;

   level_up=69;

//--- message   

   trd_t1="Trend Up";

   trd_t2="Trend Down";

//---

   symb = SymbolPrefix+Symbol()+SymbolPostfix;

   timeframe = Period();

//--- 

   IndicatorSetString(INDICATOR_SHORTNAME,"RSI Trend("+IntegerToString(Rsi_period)+")");

      

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//| Custom indicator iteration function                              |

//+------------------------------------------------------------------+

int OnCalculate(const int rates_total,

                const int prev_calculated,

                const datetime &time[],

                const double &open[],

                const double &high[],

                const double &low[],

                const double &close[],

                const long &tick_volume[],

                const long &volume[],

                const int &spread[])

  {int i=0; if(prev_calculated==0)i=rates_total-2-Rsi_period;else i=1;

//---

   while(i>=0){

    double rsi_c = iRSI(Symbol(),Period(),Rsi_period,PRICE_CLOSE,i+1);

    double rsi_p = iRSI(Symbol(),Period(),Rsi_period,PRICE_CLOSE,i+2);

    

    if(up && rsi_c<level_dw && rsi_p>level_dw){dw=true;up=false;if(i==0)doAlert(symb,timeframe,i,trd_t2);}

    else if(dw && rsi_c>level_up && rsi_p<level_up){up=true;dw=false;if(i==0)doAlert(symb,timeframe,i,trd_t1);}

    else if(!up && !dw && rsi_c<level_dw && rsi_p>level_dw){dw=true;if(i==0)doAlert(symb,timeframe,i,trd_t2);}

    else if(!up && !dw && rsi_c>level_up && rsi_p<level_up){up=true;if(i==0)doAlert(symb,timeframe,i,trd_t1);}

    

    if(up && !dw){r1Buffer[i]=1;r2Buffer[i]=EMPTY_VALUE;}

    else if(dw && !up){r2Buffer[i]=1;r1Buffer[i]=EMPTY_VALUE;}

   i--;}

//--- return value of prev_calculated for next call

   return(rates_total);

  }

//+------------------------------------------------------------------+

//|                                                                  |

//+------------------------------------------------------------------+

void doAlert(string symbol,int tf,int index,string message)

  {

   

   if(previousAlert!=message || previousTime<iTime(symb,tf,index))

     {

      previousAlert  = message;

      previousTime   = iTime(symb,tf,index);

      message=MQLInfoString(MQL_PROGRAM_NAME)+" | "+symbol+" | "+IntegerToString(tf)+" | "+message;



      if(PushNotification==PUSH_ON)

         SendNotification(message);

         

      if(SoundAlert==ALERT_ON)

         Alert(message);

        

      if(EmailAlert==MAIL_ON)

         SendMail(MQLInfoString(MQL_PROGRAM_NAME),message);

         

      if(Sound==SOUND_ON)

       PlaySound(SoundFile);   

     }

  }

string         previousAlert;

datetime       previousTime;