#ifndef SHRIMPS_EVENT_GENERATOR_BASE_H
#define SHRIMPS_EVENT_GENERATOR_BASE_H

#include "SHRiMPS/Cross_Sections/Sigma_Base.H"
#include "SHRiMPS/Eikonals/Omega_ik.H"
#include "ATOOLS/Phys/Blob_List.H"

namespace SHRIMPS {
  class Remnant_Handler;
  class Cluster_Algorithm;
  
  class Event_Generator_Base {
  protected:
    Omega_ik * p_eikonal;
    double     m_xsec, m_smin;
  public:
    Event_Generator_Base(Sigma_Base * sigma):
      p_eikonal(NULL), m_xsec(sigma->XSec()), m_smin(0.) {} 
    ~Event_Generator_Base()   {};
    virtual void Reset()      {}
    virtual void Initialise(Remnant_Handler * remnants=NULL,
			    Cluster_Algorithm * cluster=NULL) {}
    virtual int          InitEvent(ATOOLS::Blob_List * blobs) = 0;
    virtual ATOOLS::Blob * GenerateEvent() = 0;
    virtual Omega_ik   * GetEikonal()      const { return p_eikonal;}
    virtual const double XSec()            const { return m_xsec; }
    virtual const double Smin()            const { return m_smin;}
    virtual const bool   IsLastRescatter() const { return false; }
    virtual const bool   IsMinBias()       const { return true; }
    virtual const double TMax()            const { return 0.; }
    virtual const int    NLadders()        const { return 1; }
    virtual const double Yhat()            const { return 0.; }
    virtual const double Ymax()            const { return 0.; }
    virtual const double KT2min()          const { return 0.; }
    virtual const double B()               const { return 0.; }
  };
}
#endif