YABSI

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

//|                                                        YABSI.mq5 |

//|                        Copyright 2018, MetaQuotes Software Corp. |

//|                                                 https://mql5.com |

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

#property copyright "Copyright 2018, MetaQuotes Software Corp."

#property link      "https://mql5.com"

#property version   "1.00"

#property description "YABSI Buy/Sell indicator"

#property indicator_chart_window

#property indicator_buffers 4

#property indicator_plots   3

//--- plot UP

#property indicator_label1  "Sell signal"

#property indicator_type1   DRAW_ARROW

#property indicator_color1  clrRed

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- plot DN

#property indicator_label2  "Buy signal"

#property indicator_type2   DRAW_ARROW

#property indicator_color2  clrGreen

#property indicator_style2  STYLE_SOLID

#property indicator_width2  1

//--- plot MA

#property indicator_label3  "Typical price"

#property indicator_type3   DRAW_LINE

#property indicator_color3  clrBlue

#property indicator_style3  STYLE_SOLID

#property indicator_width3  1

//--- enums

enum ENUM_INPUT_YES_NO

  {

   INPUT_YES   =  1, // Yes

   INPUT_NO    =  0  // No

  };

//--- input parameters

input ENUM_INPUT_YES_NO InpShowMA=INPUT_NO;   // Show price typical

//--- indicator buffers

double         BufferUP[];

double         BufferDN[];

double         BufferMA[];

double         BufferSwitch[];

//--- global variables

int            handle_ma;

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- indicator buffers mapping

   SetIndexBuffer(0,BufferUP,INDICATOR_DATA);

   SetIndexBuffer(1,BufferDN,INDICATOR_DATA);

   SetIndexBuffer(2,BufferMA,INDICATOR_DATA);

   SetIndexBuffer(3,BufferSwitch,INDICATOR_CALCULATIONS);

//--- setting a code from the Wingdings charset as the property of PLOT_ARROW

   PlotIndexSetInteger(0,PLOT_ARROW,159);

   PlotIndexSetInteger(1,PLOT_ARROW,159);

//--- setting indicator parameters

   IndicatorSetString(INDICATOR_SHORTNAME,"YABSI Buy/Sell");

   IndicatorSetInteger(INDICATOR_DIGITS,Digits());

//--- setting plot buffer parameters

   if(InpShowMA)

     {

      PlotIndexSetInteger(2,PLOT_DRAW_TYPE,DRAW_LINE);

      PlotIndexSetInteger(2,PLOT_SHOW_DATA,true);

     }

   else

     {

      PlotIndexSetInteger(2,PLOT_DRAW_TYPE,DRAW_NONE);

      PlotIndexSetInteger(2,PLOT_SHOW_DATA,false);

     }

//--- setting buffer arrays as timeseries

   ArraySetAsSeries(BufferUP,true);

   ArraySetAsSeries(BufferDN,true);

   ArraySetAsSeries(BufferMA,true);

   ArraySetAsSeries(BufferSwitch,true);

//--- create MA's handles

   ResetLastError();

   handle_ma=iMA(NULL,PERIOD_CURRENT,1,0,MODE_SMA,PRICE_TYPICAL);

   if(handle_ma==INVALID_HANDLE)

     {

      Print("The iMA(1) by PRICE_TYPICAL object was not created: Error ",GetLastError());

      return INIT_FAILED;

     }

   ChartRedraw();

//---

   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[])

  {

//--- #AB0=>2:0 <0AA82>2 1CD5@>2 :0: B09<A5@89

   ArraySetAsSeries(open,true);

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

   ArraySetAsSeries(close,true);

//--- @>25@:0 8 @0AGQB :>;8G5AB20 ?@>AG8BK205<KE 10@>2

   if(rates_total<4) return 0;

//--- @>25@:0 8 @0AGQB :>;8G5AB20 ?@>AG8BK205<KE 10@>2

   int limit=rates_total-prev_calculated;

   if(limit>1)

     {

      limit=rates_total-4;

      ArrayInitialize(BufferUP,EMPTY_VALUE);

      ArrayInitialize(BufferDN,EMPTY_VALUE);

      ArrayInitialize(BufferMA,EMPTY_VALUE);

      ArrayInitialize(BufferSwitch,0);

     }

//--- >43>B>2:0 40==KE

   int count=(limit>1 ? rates_total : 1),copied=0;

   copied=CopyBuffer(handle_ma,0,0,count,BufferMA);

   if(copied!=count) return 0;



//---  0AGQB 8=48:0B>@0

   for(int i=limit; i>=0 && !IsStopped(); i--)

     {

      BufferDN[i]=BufferUP[i]=EMPTY_VALUE;

      BufferSwitch[i]=BufferSwitch[i+1];



      if((close[i+1]<high[i] && BufferMA[i+2]<close[i+1]) || BufferMA[i+3]<close[i+1])

        {

         if(BufferSwitch[i]!=1)

           {

            BufferUP[i]=open[i];

            BufferSwitch[i]=1;

           }

        }



      if((close[i+1]>low[i] && BufferMA[i+2]>close[i+1]) || BufferMA[i+3]>close[i+1])

        {

         if(BufferSwitch[i]!=-1)

           {

            BufferDN[i]=open[i];

            BufferSwitch[i]=-1;

           }

        }

     }



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

   return(rates_total);

  }

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