一个纯纯小白，想写点什么，也想学习一下怎么在这里写东西，就简单的写个2048小游戏。写的不好，大佬就不用看了，希望和大家交流学习，有写的不好或有更好的建议也欢迎提出来。（需要用的可直接粘贴复制）（轻喷）

游戏展示

讲解

代码

游戏展示

基本上做到了和手机上一样。我会按照我的思路为大家讲解一下，有需要的可以看看，想直接看效果或者需要用的，可以直接滑倒最后粘贴复制。

讲解

目录结构如下

按照我自己的思路讲一下，可能有点乱。

1.首先初始化一下画板，将不会改变的部分先完成。

private void initPaint(Graphics g) {//TODO 画方块所造区域g.setColor(new Color(192, 175, 159));g.fillRect(10, 120, 360 + 8, 360 + 8);//TODO 画得分区域以及说明区域g.setColor(new Color(209, 132, 102));g.fillRect(200, 15, 80, 50);g.fillRect(290, 15, 80, 50);g.setColor(Color.black);g.setFont(new Font("宋体", Font.BOLD, 20));g.drawString("得分", 220, 35);g.drawString("最高分", 300, 35);g.setFont(new Font("宋体", Font.BOLD, 35));g.drawString("游戏说明：", 15, 55);g.setFont(new Font("宋体", Font.BOLD, 20));g.drawString("按上下左右键控制;按空格键重新游戏", 15, 100);//画空白方块for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {paintBlock(g, new Block(table[i][j]), j, i);}}}

2.创建带有数字的方块，这里创建了一个block类，主要存储了，每种方块所显示的数字，数字颜色，背景颜色等属性。并且有一个setAllFont方法，来设置这些属性。

package game_2048;import java.awt.*;public class Block {int kind;Font wFont;Color wColor;Color bColor;String s;public Block(int kind) {this.kind = kind;}private final Font font1 = new Font("宋体", Font.BOLD, 46);private final Font font2 = new Font("宋体", Font.BOLD, 40);private final Font font3 = new Font("宋体", Font.BOLD, 34);private final Font font4 = new Font("宋体", Font.BOLD, 28);private final Color color1 = new Color(119,108,99);private final Color color2 = new Color(254,254,254);public void setAllFont() {switch (kind) {case 0 -> bColor = new Color(206, 194, 180);case 1 -> {wFont = font1;wColor = color1;bColor = new Color(237, 229, 218);s = 2 + "";}case 2 -> {wFont = font1;wColor = color1;bColor = new Color(237, 220, 190);s = 4 + "";}case 3 -> {wFont = font1;wColor = color1;bColor = new Color(242, 177, 123);s = 8 + "";}case 4 -> {wFont = font2;wColor = color2;bColor = new Color(246, 147, 92);s = 16 + "";}case 5 -> {wFont = font2;wColor = color2;bColor = new Color(245, 118, 86);s = 32 + "";}case 6 -> {wFont = font2;wColor = color2;bColor = new Color(245, 83, 45);s = 64 + "";}case 7 -> {wFont = font3;wColor = color2;bColor = new Color(237, 206, 115);s = 128 + "";}case 8 -> {wFont = font3;wColor = color2;bColor = new Color(230,209,81);s = 256 + "";}case 9 -> {wFont = font3;wColor = color2;bColor = new Color(207,163,12);s = 512 + "";}case 10 -> {wFont = font4;wColor = color2;bColor = new Color(229,180,6);s = 1024 + "";}case 11 -> {wFont = font4;wColor = color2;bColor = new Color(161,131,115);s = 2048 + "";}default -> {}}}}

3.绘制每个方块（这里在1里面已经用过了，当时是画空白的）

//画方块private void paintBlock(Graphics g, Block block, int x, int y) {block.setAllFont();g.setColor(block.bColor);g.fillRect(10 + x * 90 + 7, 120 + y * 90 + 7, 83, 83);if (block.kind > 0) {g.setColor(block.wColor);g.setFont(block.wFont);FontMetrics fm = getFontMetrics(block.wFont);String value = block.s;g.drawString(value,10 + x * 90 + 7 + (83 - fm.stringWidth(value)) / 2,120 + y * 90 + 7 + (83 - fm.getAscent() - fm.getDescent()) / 2 + fm.getAscent());}}

4.初始化界面，包括分数，和最开始显示的方块。

用random类来随机刷新方块存在的位置。

这里的getS()和后面的setS()分别是读、取文件，为了显示最高分用。（这两个方法写了不是很好，就不讲了）

private void init() {isOver = false;source = 0;try {best = getS();} catch (IOException e) {throw new RuntimeException(e);}for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {table[i][j] = 0;}}bX = rand1.nextInt(4);bY = rand2.nextInt(4);table[bX][bY] = 1;}

5. 控制所有方块的移动。

通过一系列控制语句，来决定是否能移动或者合并。我这里是为了做滑动的效果，可能写的有点啰嗦，反正能用就行吧。

private void bDown() {for (int j = 0; j <= 3; j++) {//第一个if是为了一种稍微特殊的地方//后面的每个方向都一样if (table[0][j] == table[1][j] && table[2][j] == table[3][j]&& table[0][j] != 0 && table[2][j] != 0) {table[1][j]++;table[0][j] = 0;}for (int i = 2; i >= 0; i--) {if (table[i + 1][j] == 0) {table[i + 1][j] = table[i][j];table[i][j] = 0;}if (table[i][j] != 0 && table[i][j] == table[i + 1][j]) {if (c[j]) {table[i + 1][j]++;table[i][j] = 0;c[j] = false;source += (int) Math.pow(2, table[i + 1][j]);}}}}}

6.我这里是用线程的方法，来实现滑动的效果。

每次按按键后，将改变fx的值，然后启动线程，每次会执行三次方块的移动，每次延迟40ms，依次来达到滑动的效果。

    @Overridepublic void run() {for (int i = 0; i < 4; i++) {c[i] = true;}int[][] tt = new int[4][4];for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {tt[i][j] = table[i][j];}}for (int k = 0; k < 3; k++) {switch (fx) {case 0 -> bUp();case 1 -> bRight();case 2 -> bDown();case 3 -> bLeft();default -> {}}try {Thread.sleep(40);} catch (InterruptedException e) {throw new RuntimeException(e);}if (best < source) {best = source;try {setS(source);} catch (IOException ioException) {ioException.printStackTrace();}}repaint();}isMove = false;loop:for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {if (tt[i][j] != table[i][j]) {isMove = true;break loop;}}}randomBlock();}

8.随机生成新的方块。每次移动之后，就会随机产生新的方块，并且也在这里设置了结束的条件。

private void randomBlock() {v.clear();for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {if (table[i][j] == 0) {v.add(i);v.add(j);}}}if (v.size() > 0 && isMove) {int kk = rand.nextInt(v.size() / 2);table[v.get(kk * 2)][v.get(kk * 2 + 1)] = (rand.nextInt(7) % 6 == 0) ? 2 : 1;}if (v.size() == 0) {boolean isSame = false;loop1:for (int i = 0; i < 3; i++) {for (int j = 0; j < 4; j++) {if ((table[i][j] == table[i + 1][j]) || (table[j][i] == table[j][i + 1])) {isSame = true;break loop1;}}}if (!isSame) {isOver = true;repaint();}}}

就这样吧，，，有啥问题也可以问，我也会回答。。。。。。

代码

best.txt

best.txt主要用来记录最高得分，创建时候需要在里面存储个0，不然读取的时候会报错。

MPanel

Panel类，主要的代码都在这个类里。

package game_2048;import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Random;
import java.util.Vector;public class MPanel extends JPanel implements KeyListener, Runnable {int[][] table = new int[4][4];int fx; //上下左右0123Random rand1 = new Random();Random rand2 = new Random();Random rand = new Random();int bX;int bY;Vector<Integer> v = new Vector<>();boolean isMove;boolean[] c = new boolean[4];int source = 0;int best;boolean isOver;public MPanel() {setFocusable(true);setBackground(new Color(241, 228, 219));this.addKeyListener(this);init();}private void init() {isOver = false;source = 0;try {best = getS();} catch (IOException e) {throw new RuntimeException(e);}for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {table[i][j] = 0;}}bX = rand1.nextInt(4);bY = rand2.nextInt(4);table[bX][bY] = 1;}@Overridepublic void paint(Graphics g) {super.paint(g);initPaint(g);g.setColor(Color.white);g.setFont(new Font("宋体", Font.BOLD, 25));FontMetrics fm = getFontMetrics(new Font("宋体", Font.BOLD, 20));String value1 = source + "";g.drawString(value1,195 + (80 - fm.stringWidth(value1)) / 2,30 + (50 - fm.getAscent() - fm.getDescent()) / 2 + fm.getAscent());String value2 = best + "";g.drawString(value2,285 + (80 - fm.stringWidth(value2)) / 2,30 + (50 - fm.getAscent() - fm.getDescent()) / 2 + fm.getAscent());if (isOver) {g.setColor(new Color(0, 0, 0, 0.5f));g.fillRect(0, 0, getWidth(), getHeight());g.setFont(new Font("宋体", Font.BOLD, 60));fm = getFontMetrics(new Font("宋体", Font.BOLD, 60));String value = "游戏结束";g.drawString(value,(getWidth() - fm.stringWidth(value)) / 2,(getHeight() - fm.getAscent() - fm.getDescent()) / 2 + fm.getAscent());}}//初始化画板private void initPaint(Graphics g) {//TODO 画方块所造区域g.setColor(new Color(192, 175, 159));g.fillRect(10, 120, 360 + 8, 360 + 8);//TODO 画得分区域以及说明区域g.setColor(new Color(209, 132, 102));g.fillRect(200, 15, 80, 50);g.fillRect(290, 15, 80, 50);g.setColor(Color.black);g.setFont(new Font("宋体", Font.BOLD, 20));g.drawString("得分", 220, 35);g.drawString("最高分", 300, 35);g.setFont(new Font("宋体", Font.BOLD, 35));g.drawString("游戏说明：", 15, 55);g.setFont(new Font("宋体", Font.BOLD, 20));g.drawString("按上下左右键控制;按空格键重新游戏", 15, 100);for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {paintBlock(g, new Block(table[i][j]), j, i);}}}//画方块private void paintBlock(Graphics g, Block block, int x, int y) {block.setAllFont();g.setColor(block.bColor);g.fillRect(10 + x * 90 + 7, 120 + y * 90 + 7, 83, 83);if (block.kind > 0) {g.setColor(block.wColor);g.setFont(block.wFont);FontMetrics fm = getFontMetrics(block.wFont);String value = block.s;g.drawString(value,10 + x * 90 + 7 + (83 - fm.stringWidth(value)) / 2,120 + y * 90 + 7 + (83 - fm.getAscent() - fm.getDescent()) / 2 + fm.getAscent());}}@Overridepublic void keyTyped(KeyEvent e) {}@Overridepublic void keyPressed(KeyEvent e) {int keyCode = e.getKeyCode();if (!isOver) {Thread thread = new Thread(this);if (keyCode == KeyEvent.VK_DOWN) {fx = 2;thread.start();} else if (keyCode == KeyEvent.VK_UP) {fx = 0;thread.start();} else if (keyCode == KeyEvent.VK_RIGHT) {fx = 1;thread.start();} else if (keyCode == KeyEvent.VK_LEFT) {fx = 3;thread.start();}}if (keyCode == KeyEvent.VK_SPACE) {init();}repaint();}@Overridepublic void keyReleased(KeyEvent e) {}@Overridepublic void run() {for (int i = 0; i < 4; i++) {c[i] = true;}int[][] tt = new int[4][4];for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {tt[i][j] = table[i][j];}}for (int k = 0; k < 3; k++) {switch (fx) {case 0 -> bUp();case 1 -> bRight();case 2 -> bDown();case 3 -> bLeft();default -> {}}try {Thread.sleep(40);} catch (InterruptedException e) {throw new RuntimeException(e);}if (best < source) {best = source;try {setS(source);} catch (IOException ioException) {ioException.printStackTrace();}}repaint();}isMove = false;loop:for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {if (tt[i][j] != table[i][j]) {isMove = true;break loop;}}}randomBlock();}private void randomBlock() {v.clear();for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {if (table[i][j] == 0) {v.add(i);v.add(j);}}}if (v.size() > 0 && isMove) {int kk = rand.nextInt(v.size() / 2);table[v.get(kk * 2)][v.get(kk * 2 + 1)] = (rand.nextInt(7) % 6 == 0) ? 2 : 1;}if (v.size() == 0) {boolean isSame = false;loop1:for (int i = 0; i < 3; i++) {for (int j = 0; j < 4; j++) {if ((table[i][j] == table[i + 1][j]) || (table[j][i] == table[j][i + 1])) {isSame = true;break loop1;}}}if (!isSame) {isOver = true;repaint();}}}private void bDown() {for (int j = 0; j <= 3; j++) {//第一个if是为了一种稍微特殊的地方//后面的每个方向都一样if (table[0][j] == table[1][j] && table[2][j] == table[3][j]&& table[0][j] != 0 && table[2][j] != 0) {table[1][j]++;table[0][j] = 0;}for (int i = 2; i >= 0; i--) {if (table[i + 1][j] == 0) {table[i + 1][j] = table[i][j];table[i][j] = 0;}if (table[i][j] != 0 && table[i][j] == table[i + 1][j]) {if (c[j]) {table[i + 1][j]++;table[i][j] = 0;c[j] = false;source += (int) Math.pow(2, table[i + 1][j]);}}}}}private void bLeft() {for (int i = 0; i <= 3; i++) {if (table[i][0] == table[i][1] && table[i][2] == table[i][3]&& table[i][0] != 0 && table[i][2] != 0) {table[i][2]++;table[i][3] = 0;}for (int j = 1; j <= 3; j++) {if (table[i][j - 1] == 0) {table[i][j - 1] = table[i][j];table[i][j] = 0;}if (table[i][j] != 0 && table[i][j] == table[i][j - 1]) {if (c[i]) {table[i][j - 1]++;table[i][j] = 0;c[i] = false;source += (int) Math.pow(2, table[i][j - 1]);}}}}}private void bRight() {for (int i = 0; i <= 3; i++) {if (table[i][0] == table[i][1] && table[i][2] == table[i][3]&& table[i][0] != 0 && table[i][2] != 0) {table[i][1]++;table[i][0] = 0;}for (int j = 2; j >= 0; j--) {if (table[i][j + 1] == 0) {table[i][j + 1] = table[i][j];table[i][j] = 0;}if (table[i][j] != 0 && table[i][j] == table[i][j + 1]) {if (c[i]) {table[i][j + 1]++;table[i][j] = 0;c[i] = false;source += (int) Math.pow(2, table[i][j + 1]);}}}}}private void bUp() {for (int j = 0; j <= 3; j++) {if (table[0][j] == table[1][j] && table[2][j] == table[3][j]&& table[0][j] != 0 && table[2][j] != 0) {table[2][j]++;table[3][j] = 0;}for (int i = 1; i <= 3; i++) {if (table[i - 1][j] == 0) {table[i - 1][j] = table[i][j];table[i][j] = 0;}if (table[i][j] != 0 && table[i][j] == table[i - 1][j]) {if (c[j]) {table[i - 1][j]++;table[i][j] = 0;c[j] = false;source += (int) Math.pow(2, table[i - 1][j]);}}}}}public int getS() throws IOException {String filePath = "src\\game_2048\\best.txt";FileReader fileReader = new FileReader(filePath);int data = 0;String s = "";while ((data = fileReader.read()) != -1) {s += (char) data;}int y = Integer.parseInt(s);fileReader.close();return y;}private void setS(int y) throws IOException {String filePath = "src\\game_2048\\best.txt";FileWriter fileWriter = new FileWriter(filePath);String yy = y + "";fileWriter.write(yy);fileWriter.close();}}

Block

每个方块创建的类。

package game_2048;import java.awt.*;public class Block {int kind;Font wFont;Color wColor;Color bColor;String s;public Block(int kind) {this.kind = kind;}private final Font font1 = new Font("宋体", Font.BOLD, 46);private final Font font2 = new Font("宋体", Font.BOLD, 40);private final Font font3 = new Font("宋体", Font.BOLD, 34);private final Font font4 = new Font("宋体", Font.BOLD, 28);private final Color color1 = new Color(119,108,99);private final Color color2 = new Color(254,254,254);public void setAllFont() {switch (kind) {case 0 -> bColor = new Color(206, 194, 180);case 1 -> {wFont = font1;wColor = color1;bColor = new Color(237, 229, 218);s = 2 + "";}case 2 -> {wFont = font1;wColor = color1;bColor = new Color(237, 220, 190);s = 4 + "";}case 3 -> {wFont = font1;wColor = color1;bColor = new Color(242, 177, 123);s = 8 + "";}case 4 -> {wFont = font2;wColor = color2;bColor = new Color(246, 147, 92);s = 16 + "";}case 5 -> {wFont = font2;wColor = color2;bColor = new Color(245, 118, 86);s = 32 + "";}case 6 -> {wFont = font2;wColor = color2;bColor = new Color(245, 83, 45);s = 64 + "";}case 7 -> {wFont = font3;wColor = color2;bColor = new Color(237, 206, 115);s = 128 + "";}case 8 -> {wFont = font3;wColor = color2;bColor = new Color(230,209,81);s = 256 + "";}case 9 -> {wFont = font3;wColor = color2;bColor = new Color(207,163,12);s = 512 + "";}case 10 -> {wFont = font4;wColor = color2;bColor = new Color(229,180,6);s = 1024 + "";}case 11 -> {wFont = font4;wColor = color2;bColor = new Color(161,131,115);s = 2048 + "";}default -> {}}}}

MFrame

package game_2048;/**@author douhehe*/import javax.swing.*;public class MFrame {public static void main(String[] args) {JFrame jf = new JFrame("2048小游戏");jf.add(new MPanel());jf.setSize(401,552);jf.setLocationRelativeTo(null);     //居中jf.setResizable(false);jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);jf.setVisible(true);}
}

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游戏展示

讲解

代码

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