generated from LengKundee/UA6-9V_VL6-N9
207 lines
20 KiB
MQL5
207 lines
20 KiB
MQL5
//+------------------------------------------------------------------+
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//| MA on Momentum.mq5 |
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//| Copyright © 2022, Vladimir Karputov |
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//| https://www.mql5.com/en/users/barabashkakvn |
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//+------------------------------------------------------------------+
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#property copyright "Copyright © 2022, Vladimir Karputov"
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#property link "https://www.mql5.com/en/users/barabashkakvn"
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#property version "1.000"
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#property indicator_separate_window
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#property indicator_level1 100
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#property indicator_buffers 2
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#property indicator_plots 2
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//--- plot Momentum
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#property indicator_label1 "Momentum"
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 clrLightSeaGreen
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#property indicator_style1 STYLE_SOLID
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#property indicator_width1 2
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//--- plot MA on Momentum
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#property indicator_label2 "MA on Momentum"
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#property indicator_type2 DRAW_LINE
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#property indicator_color2 clrDodgerBlue
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#property indicator_style2 STYLE_SOLID
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#property indicator_width2 2
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//--- input parameters
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input group "Momentum"
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input int Inp_Momentum_mom_period = 14; // Momentum: averaging period
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input ENUM_APPLIED_PRICE Inp_Momentum_applied_price = PRICE_CLOSE; // Momentum: type of price
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input group "MA"
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input int Inp_MA_ma_period = 6; // MA: averaging period
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input ENUM_MA_METHOD Inp_MA_ma_method = MODE_SMMA; // MA: smoothing type
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//--- indicator buffers
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double MomentumBuffer[];
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double MAonMomentumBuffer[];
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//---
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int handle_iMomentum; // variable for storing the handle of the iMomentum indicator
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int handle_iMA; // variable for storing the handle of the iMA indicator
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int bars_calculated = 0; // we will keep the number of values in the Momentum and MA indicators
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bool m_init_error = false; // error on InInit
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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int OnInit()
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{
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//--- indicator buffers mapping
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SetIndexBuffer(0,MomentumBuffer,INDICATOR_DATA);
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SetIndexBuffer(1,MAonMomentumBuffer,INDICATOR_DATA);
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//--- set labels for the line
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PlotIndexSetString(0,PLOT_LABEL,"Momentum"+"("+IntegerToString(Inp_Momentum_mom_period)+")");
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PlotIndexSetString(1,PLOT_LABEL,"MA"+"("+IntegerToString(Inp_MA_ma_period)+")"+" on Momentum"+"("+IntegerToString(Inp_Momentum_mom_period)+")");
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//--- number of digits of indicator value
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IndicatorSetInteger(INDICATOR_DIGITS,3);
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//--- create handle of the indicator iMomentum
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handle_iMomentum=iMomentum(Symbol(),Period(),Inp_Momentum_mom_period,
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Inp_Momentum_applied_price);
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//--- if the handle is not created
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if(handle_iMomentum==INVALID_HANDLE)
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{
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//--- tell about the failure and output the error code
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PrintFormat("Failed to create handle of the iMomentum indicator for the symbol %s/%s, error code %d",
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Symbol(),
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EnumToString(Period()),
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GetLastError());
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//--- the indicator is stopped early
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m_init_error=true;
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return(INIT_SUCCEEDED);
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}
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//--- create handle of the indicator iMA
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handle_iMA=iMA(Symbol(),Period(),Inp_MA_ma_period,0,
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Inp_MA_ma_method,handle_iMomentum);
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//--- if the handle is not created
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if(handle_iMA==INVALID_HANDLE)
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{
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//--- tell about the failure and output the error code
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PrintFormat("Failed to create handle of the iMA indicator for the symbol %s/%s, error code %d",
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Symbol(),
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EnumToString(Period()),
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GetLastError());
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//--- the indicator is stopped early
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m_init_error=true;
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return(INIT_SUCCEEDED);
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}
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//---
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return(INIT_SUCCEEDED);
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}
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//+------------------------------------------------------------------+
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//| Custom indicator iteration function |
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//+------------------------------------------------------------------+
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int OnCalculate(const int rates_total,
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const int prev_calculated,
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const datetime &time[],
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const double &open[],
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const double &high[],
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const double &low[],
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const double &close[],
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const long &tick_volume[],
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const long &volume[],
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const int &spread[])
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{
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if(m_init_error)
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return(0);
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//--- number of values copied from the iMA indicator
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int values_to_copy;
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//--- determine the number of values calculated in the indicator
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int calculated_momentum=BarsCalculated(handle_iMomentum);
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if(calculated_momentum<=0)
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{
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PrintFormat("BarsCalculated(Momentum) returned %d, error code %d",calculated_momentum,GetLastError());
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return(0);
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}
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//--- determine the number of values calculated in the indicator
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int calculated_ma=BarsCalculated(handle_iMA);
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if(calculated_ma<=0)
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{
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PrintFormat("BarsCalculated(MA) returned %d, error code %d",calculated_ma,GetLastError());
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return(0);
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}
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if(calculated_momentum!=calculated_ma)
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{
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PrintFormat("BarsCalculated(Momentum) returned %d, BarsCalculated(MA) returned %d",calculated_momentum,calculated_ma);
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return(0);
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}
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int calculated=calculated_momentum;
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//--- if it is the first start of calculation of the indicator or if the number of values in the indicator changed
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//--- or if it is necessary to calculated the indicator for two or more bars (it means something has changed in the price history)
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if(prev_calculated==0 || calculated!=bars_calculated || rates_total>prev_calculated+1)
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{
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//--- if the iMABuffer array is greater than the number of values in the iMA indicator for symbol/period, then we don't copy everything
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//--- otherwise, we copy less than the size of indicator buffers
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if(calculated>rates_total)
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values_to_copy=rates_total;
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else
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values_to_copy=calculated;
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}
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else
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{
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//--- it means that it's not the first time of the indicator calculation, and since the last call of OnCalculate()
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//--- for calculation not more than one bar is added
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values_to_copy=(rates_total-prev_calculated)+1;
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}
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//--- fill the MAonMomentumBuffer array with values of the Moving Average indicator
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//--- if FillArrayFromBuffer returns false, it means the information is nor ready yet, quit operation
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if(!FillArrayFromBufferMA(MAonMomentumBuffer,0,handle_iMA,values_to_copy))
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return(0);
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//--- fill the MomentumBuffer array with values of the Commodity Channel Index indicator
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//--- if FillArrayFromBuffer returns false, it means the information is nor ready yet, quit operation
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if(!FillArrayFromBufferMomentum(MomentumBuffer,handle_iMomentum,values_to_copy))
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return(0);
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//--- memorize the number of values in the Moving Average indicator
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bars_calculated=calculated;
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//--- return the prev_calculated value for the next call
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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//| Filling indicator buffers from the MA indicator |
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//+------------------------------------------------------------------+
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bool FillArrayFromBufferMA(double &values[], // indicator buffer of Moving Average values
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int shift, // shift
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int ind_handle, // handle of the iMA indicator
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int amount // number of copied values
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)
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{
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//--- reset error code
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ResetLastError();
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//--- fill a part of the iMABuffer array with values from the indicator buffer that has 0 index
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if(CopyBuffer(ind_handle,0,-shift,amount,values)<0)
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{
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//--- if the copying fails, tell the error code
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PrintFormat("Failed to copy data from the iMA indicator, error code %d",GetLastError());
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//--- quit with zero result - it means that the indicator is considered as not calculated
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return(false);
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}
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//--- everything is fine
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Filling indicator buffers from the iMomentum indicator |
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//+------------------------------------------------------------------+
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bool FillArrayFromBufferMomentum(double &values[], // indicator buffer of Momentum values
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int ind_handle, // handle of the iMomentum indicator
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int amount // number of copied values
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)
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{
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//--- reset error code
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ResetLastError();
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//--- fill a part of the iCCIBuffer array with values from the indicator buffer that has 0 index
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if(CopyBuffer(ind_handle,0,0,amount,values)<0)
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{
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//--- if the copying fails, tell the error code
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PrintFormat("Failed to copy data from the iMomentum indicator, error code %d",GetLastError());
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//--- quit with zero result - it means that the indicator is considered as not calculated
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return(false);
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}
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//--- everything is fine
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Indicator deinitialization function |
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//+------------------------------------------------------------------+
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void OnDeinit(const int reason)
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{
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if(handle_iMomentum!=INVALID_HANDLE)
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IndicatorRelease(handle_iMomentum);
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if(handle_iMA!=INVALID_HANDLE)
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IndicatorRelease(handle_iMA);
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}
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//+------------------------------------------------------------------+
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