turncoat2.java

黑白棋游戏的java实现

                }

        }

    }

    private void flippiece(int x, int y, int state, Graphics g)
    {
        Color black = new Color(0);
        Color grey90 = new Color(0x191919);
        Color grey80 = new Color(0x333333);
        Color grey60 = new Color(0x666666);
        Color grey40 = new Color(0x999999);
        Color grey20 = new Color(0xcccccc);
        Color grey15 = new Color(0xd8d8d8);
        Color grey10 = new Color(0xe5e5e5);
        Color white = new Color(0xffffff);
        x = x * 50 + 25;
        y = y * 50 + 25;
        switch(state)
        {
        case 10: // '\n'
            g.setColor(grey80);
            g.fillOval(x - 15, y - 6, 40, 36);
            g.setColor(grey15);
            g.fillOval(x - 20, y - 17, 40, 36);
            g.setColor(black);
            g.fillOval(x - 20, y - 18, 40, 36);
            g.setColor(grey90);
            g.fillOval(x - 20, y - 19, 40, 36);
            break;

        case 11: // '\013'
            g.setColor(grey80);
            g.fillOval(x - 15, y - 6, 40, 36);
            g.setColor(grey15);
            g.fillOval(x - 20, y - 11, 40, 30);
            g.setColor(black);
            g.fillOval(x - 20, y - 15, 40, 30);
            g.setColor(grey90);
            g.fillOval(x - 20, y - 19, 40, 30);
            break;

        case 12: // '\f'
            g.setColor(grey80);
            g.fillOval(x - 15, y - 6, 40, 36);
            g.setColor(grey15);
            g.fillOval(x - 20, y, 40, 15);
            g.fillOval(x - 20, y - 3, 40, 15);
            g.setColor(black);
            g.fillOval(x - 20, y - 6, 40, 15);
            g.fillOval(x - 20, y - 9, 40, 15);
            g.setColor(grey90);
            g.fillOval(x - 20, y - 12, 40, 15);
            break;

        case 13: // '\r'
            g.setColor(grey80);
            g.fillOval(x - 15, y - 6, 40, 36);
            g.setColor(black);
            g.fillRect(x - 20, y - 6, 40, 6);
            g.setColor(grey10);
            g.fillRect(x - 20, y, 40, 6);
            break;

        case 14: // '\016'
            g.setColor(grey80);
            g.fillOval(x - 15, y - 6, 40, 36);
            g.setColor(black);
            g.fillOval(x - 20, y - 12, 40, 15);
            g.fillOval(x - 20, y - 9, 40, 15);
            g.setColor(grey20);
            g.fillOval(x - 20, y - 6, 40, 15);
            g.fillOval(x - 20, y - 3, 40, 15);
            g.setColor(grey10);
            g.fillOval(x - 20, y, 40, 15);
            break;

        case 15: // '\017'
            g.setColor(grey80);
            g.fillOval(x - 15, y - 6, 40, 36);
            g.setColor(black);
            g.fillOval(x - 20, y - 19, 40, 30);
            g.setColor(grey20);
            g.fillOval(x - 20, y - 15, 40, 30);
            g.setColor(grey10);
            g.fillOval(x - 20, y - 11, 40, 30);
            break;

        case 16: // '\020'
            g.setColor(grey80);
            g.fillOval(x - 15, y - 6, 40, 36);
            g.setColor(black);
            g.fillOval(x - 20, y - 19, 40, 36);
            g.setColor(grey20);
            g.fillOval(x - 20, y - 18, 40, 36);
            g.setColor(grey10);
            g.fillOval(x - 20, y - 17, 40, 36);
            break;
        }
    }
     //电脑下棋
    private void mymove()
    {
        hangon();
        boolean computerplaysblack = true;
        if(playerplayswhite)
            computerplaysblack = false;
        //此表为各个位置的权值，权值越高则位置越有利
        int advantagearray[][] = {
            {
                8, 2, 7, 6, 6, 7, 2, 8
            }, {
                2, 1, 3, 3, 3, 3, 1, 2
            }, {
                7, 3, 5, 4, 4, 5, 3, 7
            }, {
                6, 3, 4, 0, 0, 4, 3, 6
            }, {
                6, 3, 4, 0, 0, 4, 3, 6
            }, {
                7, 3, 5, 4, 4, 5, 3, 7
            }, {
                2, 1, 3, 3, 3, 3, 1, 2
            }, {
                8, 2, 7, 6, 6, 7, 2, 8
            }
        };
        //将已放置棋子的点权值设为零
        for(int x = 0; x < 8; x++)
        {
            for(int y = 0; y < 8; y++)
                if(gamegrid[x][y] != -1)
                    advantagearray[x][y] = 0;

        }
        //将不能放置棋子的点权值设为零
        for(int x = 0; x < 8; x++)
        {
            for(int y = 0; y < 8; y++)
                if(advantagearray[x][y] != 0 && !moveisvalid(x, y, playerplays
white))
                    advantagearray[x][y] = 0;

        }
         //记录权值最大点，此段程序效率不是很好
        int maxadvantage = 0;
        for(int x = 0; x < 8; x++)
        {
            for(int y = 0; y < 8; y++)
                if(advantagearray[x][y] > maxadvantage)
                    maxadvantage = advantagearray[x][y];

        }

        if(maxadvantage == 0)
        {
            nextMove();
        } else
        {
            int xpos = -1;
            int ypos = -1;
            for(int x = 0; x < 8; x++)
            {
                for(int y = 0; y < 8; y++)
                    if(advantagearray[x][y] == maxadvantage)
                    {
                        xpos = x;
                        ypos = y;
                    }

            }

            plantapiece(xpos, ypos, computerplaysblack);
            lastmovewaswhite = computerplaysblack;
            nextMove();
        }
    }
    //判断胜利
    private void nextMove()
    {
        if(boardisfull())
            checkforwin();
        else
        if(!playercanmove() && !gamecanmove())
        {
            checkforwin();
        } else
        {
            if(lastmovewaswhite && playerplayswhite)
                if(gamecanmove())
                {
                    showStatus("My move.");
                    playersmove = false;
                    mymove();
                } else
                {
                    showStatus("I cannot move. Take another turn.");
                    playersmove = true;
                }
            if(lastmovewaswhite && !playerplayswhite)
                if(playercanmove())
                {
                    showStatus("Your move.");
                    playersmove = true;
                } else
                {
                    showStatus("You cannot move. My turn.");
                    playersmove = false;
                    mymove();
                }
            if(!lastmovewaswhite && playerplayswhite)
                if(playercanmove())
                {
                    showStatus("Your move.");
                    playersmove = true;
                } else
                {
                    showStatus("You cannot move. My turn.");
                    playersmove = false;
                    mymove();
                }
            if(!lastmovewaswhite && !playerplayswhite)
                if(gamecanmove())
                {
                    showStatus("My move.");
                    playersmove = false;
                    mymove();
                } else
                {
                    showStatus("I cannot move. Take another turn.");
                    playersmove = true;
                }
        }
    }
    //判断棋盘是否已经下满
    private boolean boardisfull()
    {
        boolean returnvalue = true;
        for(int x = 0; x < 8; x++)
        {
            for(int y = 0; y < 8; y++)
            {
                if(gamegrid[x][y] != -1)
                    continue;
                returnvalue = false;
                break;
            }

        }

        return returnvalue;
    }
     //当棋盘已放满时，判断胜利方，计算黑白各有多少子 ，玩家press mouse to sta
rt again，最后置playsmove=false
    private void checkforwin()
    {
        allowplay = false;
        int blacktotal = 0;
        int whitetotal = 0;
        for(int x = 0; x < 8; x++)
        {
            for(int y = 0; y < 8; y++)
            {
                if(gamegrid[x][y] == 0)
                    whitetotal++;
                if(gamegrid[x][y] == 1)
                    blacktotal++;
            }

        }

        if(playerplayswhite)
        {
            if(whitetotal > blacktotal)
            {
                showStatus("You win! Black total = " + blacktotal + ", white t
otal = " + whitetotal);
                Font font = new Font("Helvetica", 3, 48);
                String winner = new String("You win!");
                Graphics g = getGraphics();
                g.setColor(Color.red);
                g.setFont(font);
                g.drawString(winner, 50, 195);
                Font font2 = new Font("Helvetica", 1, 14);
                String winner2 = new String("To play again, click on the board
.");
                g.setFont(font2);
                g.drawString(winner2, 55, 265);
            } else
            if(blacktotal > whitetotal)
            {
                showStatus("I win. Black total = " + blacktotal + ", white tot
al = " + whitetotal);
                Font font = new Font("Helvetica", 3, 48);
                String winner = new String("I win!");
                Graphics g = getGraphics();
                g.setColor(Color.red);
                g.setFont(font);
                g.drawString(winner, 50, 195);
                Font font2 = new Font("Helvetica", 1, 14);
                String winner2 = new String("To play again, click on the board
.");
                g.setFont(font2);
                g.drawString(winner2, 55, 265);
            } else
            {
                showStatus("Tie game. Black total = " + blacktotal + ", white 
total = " + whitetotal);
                Font font = new Font("Helvetica", 3, 48);
                String winner = new String("A tie!");
                Graphics g = getGraphics();
                g.setColor(Color.red);
                g.setFont(font);
                g.drawString(winner, 50, 195);
                Font font2 = new Font("Helvetica", 1, 14);
                String winner2 = new String("To play again, click on the board
.");
                g.setFont(font2);
                g.drawString(winner2, 55, 265);
            }
        } else
        if(whitetotal > blacktotal)
        {
            Font font = new Font("Helvetica", 3, 48);
            String winner = new String("I win!");
            Graphics g = getGraphics();
            g.setColor(Color.red);
            g.setFont(font);
            g.drawString(winner, 50, 195);
            Font font2 = new Font("Helvetica", 1, 14);
            String winner2 = new String("To play again, click on the board.");

            g.setFont(font2);
            g.drawString(winner2, 55, 265);
            showStatus("I win. Black total = " + blacktotal + ", white total =
 " + whitetotal);
        } else
        if(blacktotal > whitetotal)
        {
            showStatus("You win! Black total = " + blacktotal + ", white total
 = " + whitetotal);
            Font font = new Font("Helvetica", 3, 48);
            String winner = new String("You win!");
            Graphics g = getGraphics();
            g.setColor(Color.red);
            g.setFont(font);
            g.drawString(winner, 50, 195);
            Font font2 = new Font("Helvetica", 1, 14);
            String winner2 = new String("To play again, click on the board.");

            g.setFont(font2);
            g.drawString(winner2, 55, 265);
        } else
        {
            showStatus("Tie game. Black total = " + blacktotal + ", white tota
l = " + whitetotal);
            Font font = new Font("Helvetica", 3, 48);
            String winner = new String("A tie!");
            Graphics g = getGraphics();
            g.setColor(Color.red);
            g.setFont(font);
            g.drawString(winner, 50, 195);
            Font font2 = new Font("Helvetica", 1, 14);
            String winner2 = new String("To play again, click on the board.");

            g.setFont(font2);
            g.drawString(winner2, 55, 265);
        }
        playersmove = false;
    }
    //玩家可以下棋
    private boolean playercanmove()
    {
        boolean returnvalue = false;
        for(int x = 0; x < 8; x++)
        {
            for(int y = 0; y < 8; y++)
                if(moveisvalid(x, y, !playerplayswhite))
                    returnvalue = true;

        }

        return returnvalue;
    }
    //电脑下棋
    private boolean gamecanmove()
    {
        boolean returnvalue = false;
        for(int x = 0; x < 8; x++)
        {
            for(int y = 0; y < 8; y++)
                if(moveisvalid(x, y, playerplayswhite))
                    returnvalue = true;

        }

        return returnvalue;
    }

    private synchronized void hangon()
    {
        try
        {
            Thread.sleep(1500);
        }catch(InterruptedException e){}
        finally
        {
            return;
        }
    }

    public Turncoat2()
    {
        BASE = 15;
        gamegrid = new int[8][8];
        playing = false;
        playersmove = true;
        playerplayswhite = false;
        lastmovewaswhite = false;
        allowplay = true;
        stolen = false;
    }

    private Image gameboard;
    private static boolean largeboard;
    private int BASE;
    private int gamegrid[][];
    private boolean playing;
    private boolean playersmove;
    private boolean playerplayswhite;
    private boolean lastmovewaswhite;
    private boolean allowplay;
    private boolean stolen;
    private static final boolean LOCKED = false;
}