使用quartus的基于FPGA的五子棋游戏代码

以下是一个基于FPGA的五子棋游戏的Quartus代码示例。该代码主要由VHDL编写。请注意，此代码仅供参考，需要根据具体的FPGA板和要求进行修改。

--五子棋游戏主要代码

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity gameboard is
    Port ( clk : in  STD_LOGIC;
           reset : in  STD_LOGIC;
           player1 : in  STD_LOGIC;
           player2 : in  STD_LOGIC;
           row : in  STD_LOGIC_VECTOR (3 downto 0);
           col : in  STD_LOGIC_VECTOR (3 downto 0);
           reset_board : in  STD_LOGIC;
           winner : out  STD_LOGIC;
           tie : out  STD_LOGIC;
           game_over : out  STD_LOGIC;
           board : out  STD_LOGIC_VECTOR (255 downto 0));
end gameboard;

architecture Behavioral of gameboard is

--全局变量定义
type state is (idle, player1_turn, player2_turn, game_over);
signal game_state, next_state : state;
signal player1_symbol, player2_symbol, current_symbol : std_logic;
signal current_row, current_col, next_row, next_col : integer range 0 to 15;
signal winner_found, tie_game : std_logic;
signal board_array : std_logic_vector(255 downto 0);

--状态机
begin

    process(clk, reset) is
    begin
        if reset = '1' then
            game_state <= idle;
        elsif rising_edge(clk) then
            game_state <= next_state;
        end if;
    end process;

--状态转移
    process(game_state, player1, player2, winner_found, tie_game) is
    begin
        case game_state is
            when idle =>
                if reset_board = '1' then
                    next_state <= idle;
                else
                    next_state <= player1_turn;
                end if;
            when player1_turn =>
                if winner_found = '1' or tie_game = '1' then
                    next_state <= game_over;
                else
                    next_state <= player2_turn;
                end if;
            when player2_turn =>
                if winner_found = '1' or tie_game = '1' then
                    next_state <= game_over;
                else
                    next_state <= player1_turn;
                end if;
            when game_over =>
                next_state <= idle;
        end case;
    end process;

--游戏逻辑
    process(game_state, player1, player2, row, col, reset_board, board_array) is

        --下棋函数
        function place_piece(symbol : std_logic; board : std_logic_vector) return std_logic_vector is
            variable temp_board : std_logic_vector(255 downto 0) := board;
        begin
            if temp_board(row * 16 + col) = '0' then
                temp_board(row * 16 + col) := symbol;
            end if;
            return temp_board;
        end function;

        --胜利判定函数
        function check_win(symbol : std_logic; board : std_logic_vector) return std_logic is
            variable temp_board : std_logic_vector(255 downto 0) := board;
            variable win_found : std_logic := '0';
            variable i, j : integer range 0 to 14;
        begin
            --检查每一行
            for i in 0 to 14 loop
                for j in 0 to 10 loop
                    if temp_board(i * 16 + j) = symbol and temp_board(i * 16 + j + 1) = symbol and temp_board(i * 16 + j + 2) = symbol and temp_board(i * 16 + j + 3) = symbol and temp_board(i * 16 + j + 4) = symbol then
                        win_found := '1';
                        exit;
                    end if;
                end loop;
            end loop;

            --检查每一列
            for i in 0 to 10 loop
                for j in 0 to 14 loop
                    if temp_board(i * 16 + j) = symbol and temp_board((i + 1) * 16 + j) = symbol and temp_board((i + 2) * 16 + j) = symbol and temp_board((i + 3) * 16 + j) = symbol and temp_board((i + 4) * 16 + j) = symbol then
                        win_found := '1';
                        exit;
                    end if;
                end loop;
            end loop;

            --检查主对角线
            for i in 0 to 10 loop
                for j in 0 to 10 loop
                    if temp_board(i * 16 + j) = symbol and temp_board((i + 1) * 16 + j + 1) = symbol and temp_board((i + 2) * 16 + j + 2) = symbol and temp_board((i + 3) * 16 + j + 3) = symbol and temp_board((i + 4) * 16 + j + 4) = symbol then
                        win_found := '1';
                        exit;
                    end if;
                end loop;
            end loop;

            --检查副对角线
            for i in 0 to 10 loop
                for j in 4 to 14 loop
                    if temp_board(i * 16 + j) = symbol and temp_board((i + 1) * 16 + j - 1) = symbol and temp_board((i + 2) * 16 + j - 2) = symbol and temp_board((i + 3) * 16 + j - 3) = symbol and temp_board((i + 4) * 16 + j - 4) = symbol then
                        win_found := '1';
                        exit;
                    end if;
                end loop;
            end loop;

            return win_found;
        end function;

        --平局判定函数
        function check_tie(board : std_logic_vector) return std_logic is
            variable temp_board : std_logic_vector(255 downto 0) := board;
            variable tie_game : std_logic := '1';
            variable i, j : integer range 0 to 15;
        begin
            for i in 0 to 15 loop
                for j in 0 to 15 loop
                    if temp_board(i * 16 + j) = '0' then
                        tie_game := '0';
                        exit;
                    end if;
                end loop;
            end loop;
            return tie_game;
        end function;

    begin

        if reset_board = '1' then
            board_array <= (others => '0');
            current_symbol <= 'X';
            current_row <= 0;
            current_col <= 0;
            winner_found <= '0';
            tie_game <= '0';
            next_row <= 0;
            next_col <= 0;
        else
            board_array <= place_piece(current_symbol, board_array);

            if current_symbol = 'X' then
                winner_found <= check_win(current_symbol, board_array);
                tie_game <= check_tie(board_array);
                current_symbol <= 'O';
                next_row <= to_integer(unsigned(row));
                next_col <= to_integer(unsigned(col));
            else
                winner_found <= check_win(current_symbol, board_array);
                tie_game <= check_tie(board_array);
                current_symbol <= 'X';
                next_row <= to_integer(unsigned(row));
                next_col <= to_integer(unsigned(col));
            end if;

            if player1 = '1' then
                current_row <= next_row;
                current_col <= next_col;
            end if;

            if player2 = '1' then
                current_row <= next_row;
                current_col <= next_col;
            end if;
        end if;

        board <= board_array;
        winner <= winner_found;
        tie <= tie_game;

        case current_symbol is
            when 'X' =>
                game_over <= player1;
            when 'O' =>
                game_over <= player2;
        end case;

        case game_state is
            when idle =>
                next_state <= player1_turn;
            when player1_turn =>
                if player1 = '1' then
                    next_state <= player2_turn;
                end if;
            when player2_turn =>
                if player2 = '1' then
                    next_state <= player1_turn;
                end if;
            when game_over =>
                next_state <= idle;
        end case;

    end process;

end Behavioral;

在该代码中，定义了一个实体“gameboard”，该实体具有多个输入和输出端口，包括时钟、复位、玩家1和玩家2的输入，以及行、列、复位棋盘、胜者、平局和游戏结束的输出。该代码还定义了一个状态机，用于跟踪游戏的不同阶段，以及一个游戏逻辑过程，用于实现具体的游戏规则和操作。在游戏逻辑过程中，定义了函数来执行下棋、胜利判定和平局判定等功能。