penguin.hpp

#ifndef __PENGUIN_HPP__
#define __PENGUIN_HPP__

#include "game.hpp"
#include "json.h"
#include <random>
#include <array>
#include <iostream>
#include <memory>

namespace game
{
	struct penguin_state
	{
		uint64_t one_fish = 0x7F59398348146BD; //Position of one-fish tiles (bitboard) 
		uint64_t two_fish = 0x86C628366B102; //Position of two-fish tiles (bitboard)
		uint64_t three_fish = 0x802000548180840; //Position of three-fish tiles (bitboard)
		
		//Penguins
		uint32_t p1_red = 0;
		uint32_t p2_red = 1;
		uint32_t p3_red = 8;
		uint32_t p4_red = 9;
		uint32_t p1_blue = 51;
		uint32_t p2_blue = 52;
		uint32_t p3_blue = 58;
		uint32_t p4_blue = 59;
		
		int score_red = 0;
		int score_blue = 0;
		
		bool current_player_red = false; //True if red must play now
		
		int nb_moves_red = 0; //Number of moves the red player can play
		int nb_moves_blue = 0;
	};
	
	class penguin : public game<penguin_state>
	{
		public:
			penguin();
			penguin(const penguin& pen) = default;
			penguin& operator=(const penguin& pen) = default;
			bool end_of_game() const; //Is the game ended? (draw or won)
			int value(std::uint8_t player) const; //Returns if the player win, loose or nothing
			bool won(std::uint8_t player) const;
			bool lost(std::uint8_t player) const;
			bool draw(std::uint8_t player) const;
			uint8_t current_player() const; //The player that has to play next (at the beginning, the first player)
			std::uint16_t number_of_moves() const; //Number of moves that you can play
			void play(std::uint16_t m); //Play the move m (updates the state).
			void undo(std::uint16_t m) {}
			std::string player_to_string(std::uint8_t player) const; //String representation of a player
			std::string move_to_string(std::uint16_t m) const; //String representation of a move (for example, A1)
			Json::Value to_JSON() const;
			std::string to_string() const; //String representation of the entire game
			std::set<int> to_input_vector() const;
			void from_input_vector(const std::set<int>& input);
			penguin_state get_state(); //Return the state
			void set_state(const penguin_state& state); //Replace the current state with the one passed as a parameter
			std::shared_ptr<game<penguin_state>> do_copy() const;
			std::uint64_t hash(std::uint16_t m) const;
			std::uint64_t hash() const;
			
		private:
			penguin_state state;
			uint32_t* penguin_that_moves(uint16_t move_number);
			void move_penguin(uint32_t* p);
			int update_moves(uint32_t* p, uint64_t obstacles);
			
			const uint8_t RED = 0;
			const uint8_t BLUE = 1;
			
	};
	std::ostream& operator<<(std::ostream& os, const penguin& pen);
}

#endif