text: class hk_PSI_Info: protected IVP_Event_Sim {
  public:
  	hk_PSI_Info(const IVP_Event_Sim &sim) : IVP_Event_Sim(sim) {}
  
  	hk_real get_inv_delta_time(){
  		return i_delta_time;
  	}
  
  	hk_real get_delta_time(){
  		return delta_time;
  	}
  
  };
  