java实现2048

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2048是一款逻辑比较简单的小游戏，涉及到的几个知识点有JTable绘制表格，显示数值和颜色;keyListener 监听用户按键事件，并在keyPress（）中做出相应动作。1.初始化 init()2.用户按键：判断是否可以移动，移动完后判断是否还有空格子，如果有空格子在随机产生的位置处设置2或43.判断游戏是否结束，若结束，判断用户是否胜利

运行场景

运行结束
Game.java:

   import java.awt.Color;import java.awt.Component;import java.awt.Font;import java.awt.event.KeyEvent;import java.awt.event.KeyListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JTable;import javax.swing.SwingConstants;import javax.swing.border.EtchedBorder;import javax.swing.table.DefaultTableCellRenderer;import javax.swing.table.DefaultTableModel;public class Game extends JFrame implements KeyListener {    private JPanel p;    private JTable table;    private JLabel label, scoreshow;    Boolean hasBlank;//值为true时有空格子    String[][] params;    int score = 0;    String gameResult="你输了！";    public Game() {        this.setTitle("2048");        p = new JPanel();        p.setLayout(null);        label = new JLabel("SCORE:");        scoreshow = new JLabel();        scoreshow.setBounds(60, 0, 100, 50);        label.setBounds(0, 0, 50, 50);        table = new JTable(4, 4);        table.setRowHeight(90);        table.setEnabled(false);        table.setBounds(0, 50, 400, 400);        setFont(new Font("font", Font.PLAIN, 40));        table.setBorder(new EtchedBorder(Color.BLACK, Color.LIGHT_GRAY));        p.add(table);        p.add(label);        p.add(scoreshow);        this.add(p);        this.setLocation(500, 300);        this.setSize(400, 438);        this.setVisible(true);        this.setResizable(false);        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        this.addKeyListener(this);        init();    }    public void init() {        System.out.println("初始化init()");        score = 0;        hasBlank = true;        params = new String[4][4];        randomInsert();        randomInsert();        setTableValue();    }    public void randomInsert() {        System.out.println(hasBlank);        while (hasBlank) {            int x = (int) (Math.random() * 4);            int y = (int) (Math.random() * 4);            if (params[x][y] == null) {                if (Math.random() < 0.5d) {                    params[x][y] = String.valueOf(2);                } else {                    params[x][y] = String.valueOf(4);                }                break;            }        }    }    public void hasBlank() {        boolean empty=false;//是否跳出循环的标志        hasBlank=false;        System.out.println("把hasBlank置为false为了下次的判断");        System.out.println("判断是否有空格子！hasBlank()");        for (int i = 0; i < 4&&!empty; i++) {            for (int j = 0; j < 4; j++) {                System.out.println("我在hasBlank.for()这里卡住啦！ ");                if (params[i][j] == null) {                    empty=true;                    hasBlank = true;                    break;                }            }        }    }    public void setTableValue() {        DefaultTableModel model = (DefaultTableModel) this.table.getModel();        int rowcount = model.getRowCount();        while (rowcount > 0) {            model.removeRow(0);            rowcount--;        }//      showParams();        for (int i = 0; i < 4; i++) {            model.addRow(params[i]);        }        this.table.setModel(model);        this.table.setFont(new Font("font", Font.PLAIN, 40));        for (int i = 0; i < 4; i++) {            table.getColumn(model.getColumnName(i)).setCellRenderer(                    new MyTableCellRenderrer());        }        scoreshow.setText(score + "");    }    public String add(String a) {        if (a != null) {            return String.valueOf(Integer.valueOf(a) * 2);        }        return null;    }    public Boolean compara(String a, String b) {        if (a == null) {            if (b == null) {                return true;            } else {                return false;            }        } else {            if (b == null) {                return false;            } else {                if (a.equals(b)) {                    return true;                } else {                    return false;                }            }        }    }//若返回值为false，则游戏结束    public Boolean isGameOver() {        boolean jump=false;//游戏是否结束的标志        System.out.println("判断游戏是否结束！isGameOver()");        if (hasBlank == false) {            for (int i = 0; i < 3&&!jump; i++) {                for (int j = 0; j < 3; j++) {                    if (compara(params[i][j], params[i + 1][j])                            || compara(params[i][j], params[i][j + 1])) {                        jump=true;                        break;                    }                }            }        }else{            jump=true;}        return jump;    }//重新开始游戏    public void start(){                 System.out.println("重新开始游戏！start()");         int isRestart = JOptionPane.showConfirmDialog(this,gameResult+" 是否重新开始？", "重新开始", JOptionPane.YES_NO_OPTION);                      if (isRestart == JOptionPane.YES_OPTION) {                                init();                        }}    public void up() {        System.out.println("向上移动");        for (int j = 0; j < 4; j++) {            upclear();            for (int i = 0; i < 3; i++) {                if (params[0][j] != null) {                    if (compara(params[i][j], params[i + 1][j])) {                        params[i][j] = add(params[i][j]);                        params[i + 1][j] = null;                        if (params[i][j] != null)                            score += Integer.valueOf(params[i][j]);                    }                }            }            upclear();        }    }    public void down() {        System.out.println("向下移动");        for (int j = 0; j < 4; j++) {            downclear();            for (int i = 3; i > 0; i--) {                if (params[3][j] != null) {                    if (compara(params[i][j], params[i - 1][j])) {                        params[i][j] = add(params[i][j]);                        params[i - 1][j] = null;                        if (params[i][j] != null)                            score += Integer.valueOf(params[i][j]);                    }                }            }            downclear();        }    }    public void left() {        System.out.println("向左移动");        for (int i = 0; i < 4; i++) {            leftclear();            for (int j = 0; j < 3; j++) {                if (params[i][0] != null) {                    if (compara(params[i][j], params[i][j + 1])) {                        params[i][j] = add(params[i][j + 1]);                        params[i][j + 1] = null;                        if (params[i][j] != null)                            score += Integer.valueOf(params[i][j]);                    }                }            }            leftclear();        }    }    public void right() {        System.out.println("向右移动");        for (int i = 0; i < 4; i++) {            rightclear();            for (int j = 3; j > 0; j--) {                if (params[i][3] != null) {                    if (compara(params[i][j], params[i][j - 1])) {                        params[i][j] = add(params[i][j]);                        params[i][j - 1] = null;                        if (params[i][j] != null)                            score += Integer.valueOf(params[i][j]);                    }                }            }            rightclear();        }    }    public void upclear() {        System.out.println("清空向上");        for (int j = 0; j < 4; j++) {            for (int i = 0; i < 3; i++) {                int k = i;                while (k >= 0 && params[k][j] == null) {                    params[k][j] = params[k + 1][j];                    params[k + 1][j] = null;                    k--;                }            }        }    }    public void downclear() {        System.out.println("清空向下");        for (int j = 0; j < 4; j++) {            for (int i = 3; i > 0; i--) {                int k = i;                while (k > 0 && params[k][j] == null) {                    params[k][j] = params[k - 1][j];                    params[k - 1][j] = null;                    k--;                }            }        }    }    public void leftclear() {        System.out.println("清空左");        for (int i = 0; i < 4; i++) {            for (int j = 0; j < 3; j++) {                int k = j;                while (k >= 0 && params[i][k] == null) {                    params[i][k] = params[i][k + 1];                    params[i][k + 1] = null;                    k--;                }            }        }    }    public void rightclear() {        System.out.println("清空向右");        for (int i = 0; i < 4; i++) {            for (int j = 3; j > 0; j--) {                int k = j;                while (k > 0 && params[i][k] == null) {                    params[i][k] = params[i][k - 1];                    params[i][k - 1] = null;                    k--;                }            }        }    }    public Boolean canRorL() {        if (hasBlank == false) {            for (int i = 0; i < 3; i++) {                for (int j = 0; j < 3; j++) {                    if (compara(params[i][j], params[i][j + 1])) {                        return true;                    }                }            }            return false;        }        return true;    }    public Boolean canUorD() {        if (hasBlank == false) {            for (int i = 0; i < 3; i++) {                for (int j = 0; j < 3; j++) {                    if (compara(params[i][j], params[i + 1][j])) {                        return true;                    }                }            }            return false;        }        return true;    }//流程：    public void go(){        randomInsert();        setTableValue();        if(isGameOver()==false){            System.out.println("游戏结束！");            if(win()){                System.out.println("你赢了！");}else{            System.out.println("你输了！");}            start();}}//Interface的方法全部都要覆盖    @Override    public void keyTyped(KeyEvent e) {    }    @Override    public void keyPressed(KeyEvent e) {        int key = e.getKeyCode();        if (key == KeyEvent.VK_UP) {//          hasBlank();//先判断完是否能够移动并且移动完再次判断是否有空格子，不然当有相同的格子但是没有空格//子时系统会认为无法移动，一直卡在判断是否有空格子这里            if (canUorD()) {                //hasBlank();                up();                hasBlank();                go();            }        }        if (key == KeyEvent.VK_DOWN) {//          hasBlank();            if (canUorD()) {//              hasBlank();                down();                hasBlank();                go();            }        }        if (key == KeyEvent.VK_LEFT) {//          hasBlank();            if (canRorL()) {    //          hasBlank();                left();                hasBlank();                go();            }        }        if (key == KeyEvent.VK_RIGHT) {//          hasBlank();            if (canRorL()) {        //      hasBlank();                right();                hasBlank();                go();            }        }    }    @Override    public void keyReleased(KeyEvent e) {    }//返回值为true则游戏胜利    public Boolean win(){        System.out.println("判断是否赢了！win()");        boolean winYes=false;        for(int i=0;i<4&&!winYes;i++){            for(int j=0;j<4;j++){                int value=Integer.parseInt(params[i][j]);                if(value>=2048){                    winYes=true;                    gameResult="你赢了！";                    break;}    public static void main(String[] args) {        new Game();    }    class MyTableCellRenderrer extends DefaultTableCellRenderer {        // 设置单元格内容居中        @Override        public void setHorizontalAlignment(int alignment) {            super.setHorizontalAlignment(SwingConstants.CENTER);        }        // 设置单元格颜色        @Override        public Component getTableCellRendererComponent(JTable table,                Object value, boolean isSelected, boolean hasFocus, int row,                int column) {            Component component = super.getTableCellRendererComponent(table, value,                    isSelected, hasFocus, row, column);            int v = 0;            if (value != null && value != "")                v = Integer.valueOf(value.toString());            switch (v) {            case 2:                setBackground(new Color(255, 237, 210));                break;            case 4:                setBackground(new Color(255, 228, 180));                break;            case 8:                setBackground(new Color(255, 218, 185));                break;            case 16:                setBackground(new Color(249, 175, 116));                break;            case 32:                setBackground(new Color(248, 149, 90));                break;            case 64:                setBackground(new Color(249, 94, 50));                break;            case 128:                setBackground(new Color(239, 207, 108));                break;            case 256:                setBackground(new Color(239, 207, 99));                break;            case 512:                setBackground(new Color(239, 203, 82));                break;            case 1024:                setBackground(new Color(239, 199, 57));                break;            case 2048:                setBackground(new Color(239, 195, 41));                break;            case 4096:                setBackground(new Color(255, 100, 57));                break;            default:                component.setBackground(Color.LIGHT_GRAY);                break;            }            return component;        }    }}

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