mirror of https://github.com/BlackLight/nash.git
101 lines
2.3 KiB
C++
101 lines
2.3 KiB
C++
/*
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* =====================================================================================
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*
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* Filename: nash.h
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*
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* Description: Header file for the simulation of Nash's model
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*
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* Version: 0.1
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* Created: 01/11/2010 13:20:44
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* Revision: none
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* Compiler: gcc
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*
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* Author: BlackLight (http://0x00.ath.cx), <blacklight@autistici.org>
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* Licence: GNU GPL v.3
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* Company: DO WHAT YOU WANT CAUSE A PIRATE IS FREE, YOU ARE A PIRATE!
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*
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* =====================================================================================
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*/
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#include <vector>
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#include <exception>
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typedef enum { coop, comp } nash_strategy;
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class NashException : public std::exception
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{
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const char *message;
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public:
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NashException ( const char *m )
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{
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message = m;
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}
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virtual const char* what()
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{
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return message;
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}
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};
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class NashEnvironment
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{
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int rows;
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int cols;
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double costs[2][2];
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std::vector< std::vector< nash_strategy > > matrix;
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std::vector< std::vector< std::vector< nash_strategy > > > visited_combinations;
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/**
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* \brief Verify if a certain scenario has already been visited, for avoiding loops in environments without Nash's balance
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* \return True if the current scenario was already analyzed, false otherwise
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*/
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bool check_loop ();
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/**
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* \brief Update the utility costs on the matrix
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* \param utilities Reference to the utilities matrix to be updated
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*/
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void update_utilities ( std::vector< std::vector<double> >& utilities );
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public:
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/**
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* \brief Constructor for the class
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* \param rows Rows of the Nash environment's matrix
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* \param cols Cols of the Nash environment's matrix
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*/
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NashEnvironment ( int rows, int cols );
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/**
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* \brief Constructor for the class
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*/
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NashEnvironment ( const char *file );
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/**
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* \brief Number of rows in the matrix
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*/
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const int getRows();
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/**
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* \brief Number of cols in the matrix
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*/
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const int getCols();
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/**
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* \brief Initialize the costs of the matrix of strategy costs
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*/
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void init_costs ( double coop_coop, double coop_comp, double comp_coop, double comp_comp );
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/**
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* \brief Print the current status of the matrix of strategies
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*/
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void print ();
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/**
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* \brief Refresh the matrix of the utility values
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* \return True if there were strategy changes, false otherwise
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*/
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bool refresh_strategies ();
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};
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