root/applications/bdmtoolbox/mex/arena.cpp @ 1270

/*!
\file
\brief Application Arena - Interaction of Mulptiple Participants

Arena is a space in which participants (agents) live, there is one data source, arbitrary number of agents which communicate between each other.

\section ex Matlab usage
Execute command:
\code
>> arena(DS, {A1,A2,...},experiment,logger);
\endcode
where DS is a valid datasource and A1,... are agents and logger (optional) specified by their corresponding structures.
 */

#include <base/datasources.h>
#include <base/loggers.h>
#include <mpdm/arx_agent.h>

//#include "mex_datasource.h"

using namespace bdm;

#ifdef MEX
#include <itpp/itmex.h>
#include <mex/mex_BM.h>
#include <mex/mex_logger.h>
#include <mex/mex_datasource.h>
#include <mex/mex_function.h>

void mexFunction ( int n_output, mxArray *output[], int n_input, const mxArray *input[] ) {
        // Check the number of inputs and output arguments
        if ( n_input<2 ) mexErrMsgTxt ( "Usage:\n"
                                                "result=arena(system, agents, experiment, logger)\n"
                                                "  system     = struct('class','datasource',...);  % Estimated system\n"
                                                "  agents     = {struct('class','agent',...),  % Estimators\n"
                                                "                struct('class','agent',...),...} \n"
                                                "  === optional ==="
                                                "  experiment = struct('ndat',10);                 % number of data in experiment, full length of finite datasources, 10 otherwise \n"
                                                "  logger     = struct('class','mexlogger');       % How to store results, default=mexlog, i.e. matlab structure\n\n"
                                                "see documentation of classes datasource, BM, and mexlogger and their offsprings in BDM." );

        RV::clear_all();
        //CONFIG
        UImxArray Cfg;
        try {
                Cfg.addGroup ( input[0],"system" );
                Cfg.addList ( input[1],"agents" );
                if ( n_input>2 ) {
                        Cfg.addGroup ( input[2],"experiment" );
                }
                if ( n_input>3 ) {
                        Cfg.addGroup ( input[3],"logger" );
                }
        } catch ( SettingException e ) {
                it_error ( "error: "+string ( e.getPath() ) );
        }

        //DBG
        Cfg.writeFile ( "arena.cfg" );

#else
int main ( int argc, char* argv[] ) {
        const char *fname;
        if ( argc>1 ) {
                fname = argv[1];
        } else {
                fname="arena.cfg";
        }
        UIFile Cfg ( fname );
#endif

        RNG_randomize();
        
        shared_ptr<DS> Ds = UI::build<DS> ( Cfg, "system" );
        Array<shared_ptr<Participant> > Ags;
        UI::get ( Ags,Cfg, "agents" );
        int Ndat=100;
        int burnin=0;
        
        shared_ptr<epdf> burn_pdf; 
        
        if ( Cfg.exists ( "experiment" ) ) {
                Setting &exper=Cfg.getRoot()["experiment"];
                if (UI::get(Ndat, exper, "Ndat", UI::optional ) ) {
                        bdm_assert ( Ndat<=Ds->max_length(), "Data source has less data then required" );
                };
                if (UI::get(burnin, exper, "burnin",UI::optional )){
                        burn_pdf = UI::build<epdf>(exper,"burn_pdf", UI::compulsory);
                        if (burn_pdf){
                                bdm_assert(burn_pdf->dimension()==Ds->_urv()._dsize(),"Given burn_pdf does not match the DataSource");
                        } else {
                                bdm_error("burn_pdf not specified!");
                        }
                        
                }
        } else {
                if ( Ds->max_length() < std::numeric_limits< int >::max() ) {
                        Ndat=Ds->max_length();
                }
                ;// else Ndat=10;
        }
        shared_ptr<logger> L = UI::build<logger> ( Cfg, "logger",UI::optional );
        if ( !L ) {
#ifdef MEX
                //mex logger has only from_setting constructor - we  have to fill it...
                L=new mexlog ( Ndat );
#else
                L=new stdlog();
#endif
        }

        Config MsgStore;
        MsgStore.setAutoConvert(true);
        Setting& Queue = MsgStore.getRoot().add("queue", Setting::TypeList);
        
        Ds->log_register ( *L, "DS" );
        for ( int i=0; i<Ags.length(); i++ ) {
                Ags ( i )->log_register ( *L,Ags(i)->_name() ); // estimate
                Ags (i )->ds_register(*Ds);
        }
        L->init();

        vec glob_dt(Ds->_drv()._dsize() );
        vec glob_ut(Ds->_urv()._dsize() );
        for ( int tK=0;tK<Ndat;tK++ ) {
                Ds->log_write ( );
                Ds->getdata(glob_dt);
                
                for ( int i=0; i<Ags.length(); i++ ) {
                        Ags(i) -> adapt(glob_dt);
                }
                for ( int i=0; i<Ags.length(); i++ ) {
                        Ags(i) -> broadcast(Queue);
                }
                // parse message queue
                for ( int m=Queue.getLength()-1; m>=0; m-- ) { // go backwards - last mesages are discarded
                        for ( int i=0; i<Ags.length(); i++ ) {
                                Setting& msg=Queue[m];
                                string m_to=msg["to"];
                                if (m_to==Ags(i)->_name()) {
                                        Ags(i)->receive(msg);
                                        Queue.remove(m);
                                        break;
                                        // message delivered;
                                }
                        }
                }
                if (Queue.getLength()>0){bdm_error("undelivered messages - probably unknown neighbours");}
                
                if (tK <burnin){
                        glob_ut=burn_pdf->sample();
                } else {
                        for ( int i=0; i<Ags.length(); i++ ) {
                                Ags(i) -> act(glob_ut);
                        }
                }
                
                L->step();
                Ds->write(glob_ut);
                Ds->step();                                                     // simulator step
                
                for ( int i=0; i<Ags.length(); i++ ) {
                        Ags(i) -> step();
                }
                
        }

        L->finalize();
        // ------------------ End of routine -----------------------------

#ifdef MEX
        mexlog* mL=dynamic_cast<mexlog*> ( L.get() );

        if ( mL ) { // user wants output!!
                if ( n_output<1 ) mexErrMsgTxt ( "Wrong number of output variables!" );
                output[0] = mL->toCell();
                if (n_output>1) {
                        mL->_setting_conf().setAutoConvert(true);
                        output[1]= UImxArray::create_mxArray(mL->_setting_conf().getRoot());
                }
        }
#endif
}