本文實(shí)例為大家分享了java實(shí)現(xiàn)2048小游戲的具體代碼，供大家參考，具體內(nèi)容如下

效果圖：

游戲介紹：

1.2048是一款益智類小游戲，剛開始隨機(jī)出現(xiàn)兩個(gè)數(shù)字，可以上下左右控制數(shù)字的移動(dòng)。2.當(dāng)選擇一個(gè)方向移動(dòng)后，所有數(shù)字都會(huì)沿該方向移動(dòng)到表格盡頭，并且空余表格會(huì)隨機(jī)出現(xiàn)2或4，當(dāng)碰到相同的兩個(gè)數(shù)字時(shí)，該兩個(gè)數(shù)字會(huì)合并相加成一個(gè)數(shù)字，直到最大的數(shù)字變成2048游戲成功3.否則當(dāng)數(shù)字填滿表格且不能再移動(dòng)時(shí)游戲失敗。

游戲代碼：

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.drawString('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.setColor(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 = rand.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 != null && !other.merged && value == other.getValue(); } int mergeWith(Tile other) { if (canMergeWith(other)) { value *= 2; merged = true; return value; } return -1; }}

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