200行java代码实现2048小游戏

200行java代码实现2048小游戏

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

效果图：

游戏介绍：

1.2048是一款益智类小游戏，刚开始随机出现两个数字，可以上下左右控制数字的移动。

2.当选择一个方向移动后，所有数字都会沿该方向移动到表格尽头，并且空余表格会随机出现2或4，当碰到相同的两个数字时，该两个数字会合并相加成一个数字，直到最大的数字变成2048游戏成功

3.否则当数字填满表格且不能再移动时游戏失败。

游戏代码：

import java.awt.*;

import java.awt.event.*;

import java.util.Random;

import javax.swing.*;

public class Game2048 extends JPanel {

enum State {

start, won, running, over

}

final Color[] colorTable = { new Color(0x701710), new Color(0xFFE4C3), new Color(0xfff4d3), new Color(0xffdac3),

new Color(0xe7b08e), new Color(0xe7bf8e), new Color(0xffc4c3), new Color(0xE7948e), new Color(0xbe7e56),

new Color(0xbe5e56), new Color(0x9c3931), new Color(0x701710) };

final static int target = 2048;

static int highest;

static int score;

private Color gridColor = new Color(0xBBADA0);

private Color emptyColor = new Color(0xCDC1B4);

private Color startColor = new Color(0xFFEBCD);

private Random rand = new Random();

private Tile[][] tiles;

private int side = 4;

private State gamestate = State.start;

private boolean checkingAvailableMoves;

public Game2048() {

setPreferredSize(new Dimension(900, 700));

setBackground(new Color(0xFAF8EF));

setFont(new Font("SansSerif", Font.BOLD, 48));

setFocusable(true);

addMouseListener(new MouseAdapter() {

@Override

public void mousePressed(MouseEvent e) {

startGame();

repaint();

}

});

addKeyListener(new KeyAdapter() {

@Override

public void keyPressed(KeyEvent e) {

switch (e.getKeyCode()) {

case KeyEvent.VK_UP:

moveUp();

break;

case KeyEvent.VK_DOWN:

moveDown();

break;

case KeyEvent.VK_LEFT:

moveLeft();

break;

case KeyEvent.VK_RIGHT:

moveRight();

break;

}

repaint();

}

});

}

@Override

public void paintComponent(Graphics gg) {

super.paintComponent(gg);

Graphics2D g = (Graphics2D) gg;

g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

drawGrid(g);

}

void startGame() {

if (gamestate != State.running) {

score = 0;

highest = 0;

gamestate = State.running;

tiles = new Tile[side][side];

addRandomTile();

addRandomTile();

}

}

void drawGrid(Graphics2D g) {

g.setColor(gridColor);

g.fillRoundRect(200, 100, 499, 499, 15, 15);

if (gamestate == State.running) {

for (int r = 0; r < side; r++) {

for (int c = 0; c < side; c++) {

if (tiles[r][c] == null) {

g.setColor(emptyColor);

g.fillRoundRect(215 + c * 121, 115 + r * 121, 106, 106, 7, 7);

} else {

drawTile(g, r, c);

}

}

}

} else {

g.setColor(startColor);

g.fillRoundRect(215, 115, 469, 469, 7, 7);

g.setColor(gridColor.darker());

g.setFont(new Font("SansSerif", Font.BOLD, 128));

g.drawString("2048", 310, 270);

g.setFont(new Font("SansSerif", Font.BOLD, 20));

if (gamestate == State.won) {

g.drawString("you made it!", 390, 350);

} else if (gamestate == State.over)

g.aYmHQUdrawString("game over", 400, 350);

g.setColor(gridColor);

g.drawString("click to start a new game", 330, 470);

g.drawString("(use arrow keys to move tiles)", 310, 530);

}

}

void drawTile(Graphics2D g, int r, int c) {

int value = tiles[r][c].getValue();

g.setColor(colorTable[(int) (Math.log(value) / Math.log(2)) + 1]);

g.fillRoundRect(215 + c * 121, 115 + r * 121, 106, 106, 7, 7);

String s = String.valueOf(value);

g.setColaYmHQUor(value < 128 ? colorTable[0] : colorTable[1]);

FontMetrics fm = g.getFontMetrics();

int asc = fm.getAscent();

int dec = fm.getDescent();

int x = 215 + c * 121 + (106 - fm.stringWidth(s)) / 2;

int y = 115 + r * 121 + (asc + (106 - (asc + dec)) / 2);

g.drawString(s, x, y);

}

private void addRandomTile() {

int pos = rahttp://nd.nextInt(side * side);

int row, col;

do {

pos = (pos + 1) % (side * side);

row = pos / side;

col = pos % side;

} while (tiles[row][col] != null);

int val = rand.nextInt(10) == 0 ? 4 : 2;

tiles[row][col] = new Tile(val);

}

private boolean move(int countDownFrom, int yIncr, int xIncr) {

boolean moved = false;

for (int i = 0; i < side * side; i++) {

int j = Math.abs(countDownFrom - i);

int r = j / side;

int c = j % side;

if (tiles[r][c] == null)

continue;

int nextR = r + yIncr;

int nextC = c + xIncr;

while (nextR >= 0 && nextR < side && nextC >= 0 && nextC < side) {

Tile next = tiles[nextR][nextC];

Tile curr = tiles[r][c];

if (next == null) {

if (checkingAvailableMoves)

return true;

tiles[nextR][nextC] = curr;

tiles[r][c] = null;

r = nextR;

c = nextC;

nextR += yIncr;

nextC += xIncr;

moved = true;

} else if (next.canMergeWith(curr)) {

if (checkingAvailableMoves)

return true;

int value = next.mergeWith(curr);

if (value > highest)

highest = value;

score += value;

tiles[r][c] = null;

moved = true;

break;

} else

break;

}

}

if (moved) {

if (highest < target) {

clearMerged();

addRandomTile();

if (!movesAvailable()) {

gamestate = State.over;

}

} else if (highest == target)

gamestate = State.won;

}

return moved;

}

boolean moveUp() {

return move(0, -1, 0);

}

boolean moveDown() {

return move(side * side - 1, 1, 0);

}

boolean moveLeft() {

return move(0, 0, -1);

}

boolean moveRight() {

return move(side * side - 1, 0, 1);

}

void clearMerged() {

for (Tile[] row : tiles)

for (Tile tile : row)

if (tile != null)

tile.setMerged(false);

}

boolean movesAvailable() {

checkingAvailableMoves = true;

boolean hasMoves = moveUp() || moveDown() || moveLeft() || moveRight();

checkingAvailableMoves = false;

return hasMoves;

}

public static void main(String[] args) {

SwingUtilities.invokeLater(() -> {

JFrame f = new JFrame();

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f.setTitle("2048");

f.setResizable(true);

f.add(new Game2048(), BorderLayout.CENTER);

f.pack();

f.setLocationRelativeTo(null);

f.setVisible(true);

});

}

}

class Tile {

private boolean merged;

private int value;

Tile(int val) {

value = val;

}

int getValue() {

return value;

}

void setMerged(boolean m) {

merged = m;

}

boolean canMergeWith(Tile other) {

return !merged && other != nullaYmHQU && !other.merged && value == other.getValue();

}

int mergeWith(Tile other) {

if (canMergeWith(other)) {

value *= 2;

merged = true;

return value;

}

return -1;

}

}

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