299 lines
8.0 KiB
Java
299 lines
8.0 KiB
Java
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;
|
|
}
|
|
}
|