ACCELERATOR

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

//|                                                  Accelerator.mq4 |

//|                      Copyright © 2005, MetaQuotes Software Corp. |

//|                                       http://www.metaquotes.net/ |

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

#property  copyright "Copyright © 2005, MetaQuotes Software Corp."

#property  link      "http://www.metaquotes.net/"

//---- indicator settings

#property  indicator_separate_window

#property  indicator_buffers 3

#property  indicator_color1  Black

#property  indicator_color2  Green

#property  indicator_color3  Red

//---- indicator buffers

double     ExtBuffer0[];

double     ExtBuffer1[];

double     ExtBuffer2[];

double     ExtBuffer3[];

double     ExtBuffer4[];

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

//| Custom indicator initialization function                         |

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

int init()

  {

//---- 2 additional buffers are used for counting.

   IndicatorBuffers(5);

//---- drawing settings

   SetIndexStyle(0,DRAW_NONE);

   SetIndexStyle(1,DRAW_HISTOGRAM);

   SetIndexStyle(2,DRAW_HISTOGRAM);

   IndicatorDigits(Digits+2);

   SetIndexDrawBegin(0,38);

   SetIndexDrawBegin(1,38);

   SetIndexDrawBegin(2,38);

//---- 4 indicator buffers mapping

   SetIndexBuffer(0,ExtBuffer0);

   SetIndexBuffer(1,ExtBuffer1);

   SetIndexBuffer(2,ExtBuffer2);

   SetIndexBuffer(3,ExtBuffer3);

   SetIndexBuffer(4,ExtBuffer4);

//---- name for DataWindow and indicator subwindow label

   IndicatorShortName("AC");

   SetIndexLabel(1,NULL);

   SetIndexLabel(2,NULL);

//---- initialization done

   return(0);

  }

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

//| Accelerator/Decelerator Oscillator                               |

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

int start()

  {

   int    limit;

   int    counted_bars=IndicatorCounted();

   double prev,current;

   //---- last counted bar will be recounted

   if(counted_bars>0) counted_bars--;

   limit=Bars-counted_bars;

   //---- macd counted in the 1-st additional buffer

   for(int i=0; i<limit; i++)

      ExtBuffer3[i]=iMA(NULL,0,5,0,MODE_SMA,PRICE_MEDIAN,i)-iMA(NULL,0,34,0,MODE_SMA,PRICE_MEDIAN,i);

   //---- signal line counted in the 2-nd additional buffer

   for(i=0; i<limit; i++)

      ExtBuffer4[i]=iMAOnArray(ExtBuffer3,Bars,5,0,MODE_SMA,i);

   //---- dispatch values between 2 buffers

   bool up=true;

   for(i=limit-1; i>=0; i--)

     {

      current=ExtBuffer3[i]-ExtBuffer4[i];

      prev=ExtBuffer3[i+1]-ExtBuffer4[i+1];

      if(current>prev) up=true;

      if(current<prev) up=false;

      if(!up)

        {

         ExtBuffer2[i]=current;

         ExtBuffer1[i]=0.0;

        }

      else

        {

         ExtBuffer1[i]=current;

         ExtBuffer2[i]=0.0;

        }

       ExtBuffer0[i]=current;

     }

   //---- done

   return(0);

  }

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