java实现2048小游戏

痛定思痛。 2022-10-28 10:07 330阅读 0赞

本文实例为大家分享了java实现2048小游戏的具体代码，供大家参考，具体内容如下

一、实现效果

二、实现代码  
Check表示格子，GameView实现游戏视图界面及功能，是核心。

Check.java

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import java.awt.Color;  
import java.awt.Font;  
  
// 方格类  
public class Check \{  
public int value;  
  
Font font1 = new Font("宋体", Font.BOLD, 46);  
Font font2 = new Font("宋体", Font.BOLD, 40);  
Font font3 = new Font("宋体", Font.BOLD, 34);  
Font font4 = new Font("宋体", Font.BOLD, 28);  
Font font5 = new Font("宋体", Font.BOLD, 22);  
  
public Check() \{  
value = 0; //value为方格中数字  
\}  
//字体颜色  
public Color getForeground() \{  
switch (value) \{  
case 0:  
return new Color(0xcdc1b4);//0的颜色与背景色一致，相当于没有数字  
case 2:  
case 4:  
return Color.BLACK;  
default:  
return Color.WHITE;  
\}  
\}  
  
//字体背景颜色，即方格颜色  
public Color getBackground() \{  
switch (value) \{  
case 0:  
return new Color(0xcdc1b4);  
case 2:  
return new Color(0xeee4da);  
case 4:  
return new Color(0xede0c8);  
case 8:  
return new Color(0xf2b179);  
case 16:  
return new Color(0xf59563);  
case 32:  
return new Color(0xf67c5f);  
case 64:  
return new Color(0xf65e3b);  
case 128:  
return new Color(0xedcf72);  
case 256:  
return new Color(0xedcc61);  
case 512:  
return new Color(0xedc850);  
case 1024:  
return new Color(0xedc53f);  
case 2048:  
return new Color(0xedc22e);  
case 4096:  
return new Color(0x65da92);  
case 8192:  
return new Color(0x5abc65);  
case 16384:  
return new Color(0x248c51);  
default:  
return new Color(0x248c51);  
\}  
\}  
  
public Font getCheckFont() \{  
if (value < 10) \{  
return font1;  
\}  
if (value < 100) \{  
return font2;  
\}  
if (value < 1000) \{  
return font3;  
\}  
if (value < 10000) \{  
return font4;  
\}  
  
return font5;  
\}  
  
\}  
GameView.java

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import java.awt.\*;  
import java.awt.event.KeyEvent;  
import java.awt.event.KeyListener;  
import java.util.ArrayList;  
import java.util.List;  
import java.util.Random;  
  
import javax.swing.JFrame;  
import javax.swing.JLabel;  
import javax.swing.JPanel;  
  
public class GameView\{  
private static final int jframeWidth = 405;//窗口宽高  
private static final int jframeHeight = 530;  
private static int score = 0;  
  
Font topicFont = new Font("微软雅黑", Font.BOLD, 50);//主题字体  
Font scoreFont = new Font("微软雅黑", Font.BOLD, 28);//得分字体  
Font explainFont = new Font("宋体", Font.PLAIN,20);//提示字体  
  
private JFrame jframeMain;  
private JLabel jlblTitle;  
private JLabel jlblScoreName;  
private JLabel jlblScore;  
private JLabel jlblTip;  
private GameBoard gameBoard;  
  
public GameView() \{  
init();  
\}  
  
public void init() \{  
//1、创建窗口  
jframeMain = new JFrame("2048小游戏");  
jframeMain.setSize(jframeWidth, jframeHeight);  
jframeMain.setDefaultCloseOperation(JFrame.EXIT\_ON\_CLOSE);  
jframeMain.setLocationRelativeTo(null);//窗口显示位置居中  
jframeMain.setResizable(false);  
jframeMain.setLayout(null);//设置绝对布局，以便后面可以用setBounds设置位置  
  
jlblTitle = new JLabel("2048", JLabel.CENTER);  
jlblTitle.setFont(topicFont);  
jlblTitle.setForeground(Color.BLACK);  
jlblTitle.setBounds(50, 0, 150, 60);  
jframeMain.add(jlblTitle);  
  
  
//2、框架窗口搭建好，则需向里面开始添加内容  
//设置字体及其颜色、位置  
jlblScoreName = new JLabel("得 分", JLabel.CENTER);  
jlblScoreName.setFont(scoreFont);  
jlblScoreName.setForeground(Color.WHITE);  
jlblScoreName.setOpaque(true);  
jlblScoreName.setBackground(Color.GRAY);  
jlblScoreName.setBounds(250, 0, 120, 30);  
jframeMain.add(jlblScoreName);  
  
//3、得分区(得分名+分数)  
jlblScore = new JLabel("0", JLabel.CENTER);  
jlblScore.setFont(scoreFont);  
jlblScore.setForeground(Color.WHITE);  
jlblScore.setOpaque(true);  
jlblScore.setBackground(Color.GRAY);  
jlblScore.setBounds(250, 30, 120, 30);  
jframeMain.add(jlblScore);  
  
//4、提示说明区  
jlblTip = new JLabel("操作: ↑ ↓ ← →, 按esc键重新开始 ",  
JLabel.CENTER);  
jlblTip.setFont(explainFont);  
jlblTip.setForeground(Color.DARK\_GRAY);  
jlblTip.setBounds(0, 60, 400, 40);  
jframeMain.add(jlblTip);  
  
//5、主游戏面板区  
gameBoard = new GameBoard();  
gameBoard.setBounds(0, 100, 400, 400);  
gameBoard.setBackground(Color.GRAY);  
gameBoard.setFocusable(true);//焦点即当前正在操作的组件，也就是移动的数字  
gameBoard.setLayout(new FlowLayout());  
jframeMain.add(gameBoard);  
\}  
  
// 游戏面板  
class GameBoard extends JPanel implements KeyListener \{  
private static final int CHECK\_GAP = 10;//方格之间的间隙  
private static final int CHECK\_SIZE = 85;//方格大小  
private static final int CHECK\_ARC = 20;//方格弧度  
  
private Check\[\]\[\] checks = new Check\[4\]\[4\];  
private boolean isadd = true;  
  
public GameBoard() \{  
initGame();  
addKeyListener(this);  
\}  
  
private void initGame() \{  
score = 0;  
for (int indexRow = 0; indexRow < 4; indexRow++) \{  
for (int indexCol = 0; indexCol < 4; indexCol++) \{  
checks\[indexRow\]\[indexCol\] = new Check();  
\}  
\}  
// 最开始时生成两个数  
isadd = true;  
createCheck();  
isadd = true;  
createCheck();  
\}  
  
@Override  
public void keyPressed(KeyEvent e) \{  
switch (e.getKeyCode()) \{  
case KeyEvent.VK\_ESCAPE:  
initGame();//重新开始游戏（初始化游戏）  
break;  
case KeyEvent.VK\_LEFT:  
moveLeft();  
createCheck();//调用一次方法创建一个方格数字  
judgeGameOver();//创建后判断是否GameOver，若所有格子均满即跳出GameOver  
break;  
case KeyEvent.VK\_RIGHT:  
moveRight();  
createCheck();  
judgeGameOver();  
break;  
case KeyEvent.VK\_UP:  
moveUp();  
createCheck();  
judgeGameOver();  
break;  
case KeyEvent.VK\_DOWN:  
moveDown();  
createCheck();  
judgeGameOver();  
break;  
default:  
break;//按其他键没有反应  
\}  
repaint();//刷新，会自动调用paint()方法，重新绘制移动后的图  
\}  
  
  
private void createCheck() \{  
List<Check> list = getEmptyChecks();  
  
if (!list.isEmpty() && isadd) \{  
Random random = new Random();  
int index = random.nextInt(list.size());  
Check check = list.get(index);  
// 2, 4出现概率3:1  
int randomValue = random.nextInt(4);  
check.value = ( randomValue % 3 == 0 || randomValue % 3 == 1) ? 2 : 4;//只有\[0,4)中的2才能生成4  
isadd = false;  
\}  
\}  
  
// 获取空白方格  
private List<Check> getEmptyChecks() \{  
List<Check> checkList = new ArrayList<>();  
for (int i = 0; i < 4; i++) \{  
for (int j = 0; j < 4; j++) \{  
if (checks\[i\]\[j\].value == 0) \{  
checkList.add(checks\[i\]\[j\]);  
\}  
\}  
\}  
return checkList;  
\}  
//是否全部格子占满，全部占满则GameOver  
private boolean judgeGameOver() \{  
jlblScore.setText(score + "");  
  
if (!getEmptyChecks().isEmpty()) \{  
return false;  
\}  
  
for (int i = 0; i < 3; i++) \{  
for (int j = 0; j < 3; j++) \{  
//判断是否存在可合并的方格  
if (checks\[i\]\[j\].value == checks\[i\]\[j + 1\].value  
|| checks\[i\]\[j\].value == checks\[i + 1\]\[j\].value) \{  
return false;  
\}  
\}  
\}  
  
return true;  
\}  
  
private void moveLeft() \{  
//找到一个非空格子后checks\[i\]\[j\].value > 0，可分为三种情况处理  
for (int i = 0; i < 4; i++) \{  
for (int j = 1, index = 0; j < 4; j++) \{  
if (checks\[i\]\[j\].value > 0) \{  
//第一种情况：checks\[i\]\[j\]（非第1列）与checks\[i\]\[index\]的数相等，则合并乘以2，且得分增加  
if (checks\[i\]\[j\].value == checks\[i\]\[index\].value) \{  
score += checks\[i\]\[index\].value \*= 2;  
checks\[i\]\[j\].value = 0;  
isadd = true;  
\} else if (checks\[i\]\[index\].value == 0) \{  
//第二种：若checks\[i\]\[index\]为空格子，checks\[i\]\[j\]就直接移到最左边checks\[i\]\[index\]  
checks\[i\]\[index\].value = checks\[i\]\[j\].value;  
checks\[i\]\[j\].value = 0;  
isadd = true;  
\} else if (checks\[i\]\[++index\].value == 0) \{  
//第三种：若checks\[i\]\[index\]不为空格子，并且数字也不相等，若其旁边为空格子，则移到其旁边  
checks\[i\]\[index\].value = checks\[i\]\[j\].value;  
checks\[i\]\[j\].value = 0;  
isadd = true;  
\}  
\}  
\}  
\}  
\}  
  
private void moveRight() \{  
for (int i = 0; i < 4; i++) \{  
for (int j = 2, index = 3; j >= 0; j--) \{  
if (checks\[i\]\[j\].value > 0) \{  
if (checks\[i\]\[j\].value == checks\[i\]\[index\].value) \{  
score += checks\[i\]\[index\].value \*= 2;  
checks\[i\]\[j\].value = 0;  
isadd = true;  
\} else if (checks\[i\]\[index\].value == 0) \{  
checks\[i\]\[index\].value = checks\[i\]\[j\].value;  
checks\[i\]\[j\].value = 0;  
isadd = true;  
\} else if (checks\[i\]\[--index\].value == 0) \{  
checks\[i\]\[index\].value = checks\[i\]\[j\].value;  
checks\[i\]\[j\].value = 0;  
isadd = true;  
\}  
\}  
\}  
\}  
\}  
  
private void moveUp() \{  
for (int i = 0; i < 4; i++) \{  
for (int j = 1, index = 0; j < 4; j++) \{  
if (checks\[j\]\[i\].value > 0) \{  
if (checks\[j\]\[i\].value == checks\[index\]\[i\].value) \{  
score += checks\[index\]\[i\].value \*= 2;  
checks\[j\]\[i\].value = 0;  
isadd = true;  
\} else if (checks\[index\]\[i\].value == 0) \{  
checks\[index\]\[i\].value = checks\[j\]\[i\].value;  
checks\[j\]\[i\].value = 0;  
isadd = true;  
\} else if (checks\[++index\]\[i\].value == 0)\{  
checks\[index\]\[i\].value = checks\[j\]\[i\].value;  
checks\[j\]\[i\].value = 0;  
isadd = true;  
\}  
\}  
\}  
\}  
\}  
  
private void moveDown() \{  
for (int i = 0; i < 4; i++) \{  
for (int j = 2, index = 3; j >= 0; j--) \{  
if (checks\[j\]\[i\].value > 0) \{  
if (checks\[j\]\[i\].value == checks\[index\]\[i\].value) \{  
score += checks\[index\]\[i\].value \*= 2;  
checks\[j\]\[i\].value = 0;  
isadd = true;  
\} else if (checks\[index\]\[i\].value == 0) \{  
checks\[index\]\[i\].value = checks\[j\]\[i\].value;  
checks\[j\]\[i\].value = 0;  
isadd = true;  
\} else if (checks\[--index\]\[i\].value == 0) \{  
checks\[index\]\[i\].value = checks\[j\]\[i\].value;  
checks\[j\]\[i\].value = 0;  
isadd = true;  
\}  
\}  
\}  
\}  
\}  
  
@Override  
public void paint(Graphics g) \{  
super.paint(g);  
for (int i = 0; i < 4; i++) \{  
for (int j = 0; j < 4; j++) \{  
drawCheck(g, i, j);  
\}  
\}  
  
// GameOver  
if (judgeGameOver()) \{  
g.setColor(new Color(64, 64, 64, 100));//RGBA最后一个A可以视为透明度  
g.fillRect(0, 0, getWidth(), getHeight());//填充矩形（游戏面板），将暗黑色填充上去  
g.setColor(Color.WHITE);  
g.setFont(topicFont);  
FontMetrics fms = getFontMetrics(topicFont);//FontMetrics字体测量，该类是Paint的内部类，通过getFontMetrics()方法可获取字体相关属性  
String value = "Game Over!";  
g.drawString(value, (getWidth()-fms.stringWidth(value)) / 2, getHeight() / 2);//字体居中显示  
\}  
\}  
  
// 绘制方格  
// Graphics2D 类是Graphics 子类，拥有强大的二维图形处理能力  
private void drawCheck(Graphics g, int i, int j) \{  
Graphics2D gg = (Graphics2D) g;  
//下面两句是抗锯齿模式，计算和优化消除文字锯齿，字体更清晰顺滑  
gg.setRenderingHint(RenderingHints.KEY\_ANTIALIASING,RenderingHints.VALUE\_ANTIALIAS\_ON);  
gg.setRenderingHint(RenderingHints.KEY\_STROKE\_CONTROL, RenderingHints.VALUE\_STROKE\_NORMALIZE);  
//获取方格  
Check check = checks\[i\]\[j\];  
//不同数字设置背景色  
gg.setColor(check.getBackground());  
// 绘制圆角  
gg.fillRoundRect(CHECK\_GAP + (CHECK\_GAP + CHECK\_SIZE) \* j,  
CHECK\_GAP + (CHECK\_GAP + CHECK\_SIZE) \* i,  
CHECK\_SIZE, CHECK\_SIZE, CHECK\_ARC, CHECK\_ARC);  
//绘制字体及其颜色  
gg.setColor(check.getForeground());  
gg.setFont(check.getCheckFont());  
  
// 文字测量，并对文字进行绘制  
FontMetrics fms = getFontMetrics(check.getCheckFont());  
String value = String.valueOf(check.value);  
//使用此图形上下文的当前颜色绘制由指定迭代器给定的文本。  
//getAscent()是FontMetrics中的一个方法，  
//getDescent() 为降部  
gg.drawString(value,  
CHECK\_GAP + (CHECK\_GAP + CHECK\_SIZE) \* j +  
(CHECK\_SIZE - fms.stringWidth(value)) / 2,  
CHECK\_GAP + (CHECK\_GAP + CHECK\_SIZE) \* i +  
(CHECK\_SIZE - fms.getAscent() - fms.getDescent()) / 2  
\+ fms.getAscent());//让数字居中显示  
\}  
  
@Override  
public void keyReleased(KeyEvent e) \{  
\}  
  
@Override  
public void keyTyped(KeyEvent e) \{  
\}  
  
\}  
  
public void showView() \{  
jframeMain.setVisible(true);  
\}  
  
\}  
Main.java

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public class Main \{  
public static void main(String\[\] args) \{  
new GameView().showView();  
\}  
\}