JAVA로 게임 만들기

1. 벽돌깨기

Main.java — 기본 창 띄워줌

package brickBracker;
import javax.swing.JFrame;
public class Main {
public static void main(String[] args) {
JFrame obj = new JFrame();
Gameplay gamePlay = new Gameplay();
obj.setBounds(10, 10, 700, 600);
obj.setTitle("Breakout Ball");
obj.setResizable(false);
obj.setVisible(true);
obj.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
obj.add(gamePlay);
}
}

Gameplay.java — 전체적인 게임로직

package brickBracker;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JPanel;
import javax.swing.Timer;
public class Gameplay extends JPanel implements KeyListener, ActionListener {
private boolean play = false;
private int score = 0;
private int totalBricks = 21;
private Timer timer;
private int delay = 8;
private int playerX = 310;
private int ballposX = 120;
private int ballposY = 350;
private int ballXdir = -1;
private int ballYdir = -2;
private Mapgenerator map;
public Gameplay() {
map = new Mapgenerator(3, 7);
addKeyListener(this);
setFocusable(true);
setFocusTraversalKeysEnabled(false);
timer = new Timer(delay, this);
timer.start();
}
public void paint(Graphics g) {
g.setColor(Color.black);
g.fillRect(1, 1, 692, 592);
map.draw((Graphics2D) g);
g.setColor(Color.yellow);
g.fillRect(0, 0, 3, 592);
g.fillRect(0, 0, 692, 3);
g.fillRect(0, 0, 3, 592);
g.setColor(Color.white);
g.setFont(new Font("serif", Font.BOLD, 25));
g.drawString("" + score, 590, 30);
g.setColor(Color.green);
g.fillRect(playerX, 550, 100, 8);
g.setColor(Color.yellow);
g.fillOval(ballposX, ballposY, 20, 20);
if (totalBricks <= 0) {
play = false;
ballXdir = 0;
ballYdir = 0;
g.setColor(Color.red);
g.setFont(new Font("serif", Font.BOLD, 30));
g.drawString("블록을 모두 제거하였습니다 ", 190, 300);
g.setFont(new Font("serif", Font.BOLD, 20));
g.drawString("Enter키를 눌러 다시 시작하세요. ", 230, 350);
}
if (ballposY > 570) {
play = false;
ballXdir = 0;
ballYdir = 0;
g.setColor(Color.red);
g.setFont(new Font("serif", Font.BOLD, 30));
g.drawString("모든 블록을 제거하지 못했습니다.", 190, 300);
g.setFont(new Font("serif", Font.BOLD, 20));
g.drawString("Enter키를 눌러 다시 시작하세요.  ", 230, 350);
}
g.dispose();
}
@Override
public void actionPerformed(ActionEvent e) {
timer.start();
if (play) {
if (new Rectangle(ballposX, ballposY, 20, 20).intersects(new Rectangle(playerX, 550, 100, 8))) {  //블록 만들기
ballYdir = -ballYdir;
}
A: for (int i = 0; i < map.map.length; i++) {
for (int j = 0; j < map.map[0].length; j++) {
if (map.map[i][j] > 0) {
int brickX = j * map.brickWidth + 80;
int brickY = i * map.brickHeight + 50;
int brickWidth = map.brickWidth;
int brickHeight = map.brickHeight;
Rectangle rect = new Rectangle(brickX, brickY, brickWidth, brickHeight);
Rectangle ballRect = new Rectangle(ballposX, ballposY, 20, 20);
Rectangle brickRect = rect;
if (ballRect.intersects(brickRect)) {
map.setBrickValue(0, i, j);
totalBricks--;
score += 5;
if (ballposX + 19 <= brickRect.x || ballposX + 1 >= brickRect.x + brickRect.width) {
ballXdir = -ballXdir;
} else {
ballYdir = -ballYdir;
}
break A;
}}}}
ballposX += ballXdir;
ballposY += ballYdir;
if (ballposX < 0) {
ballXdir = -ballXdir;
}
if (ballposY < 0) {
ballYdir = -ballYdir;
}
if (ballposX > 670) {
ballXdir = -ballXdir;
}
}
repaint();
}
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
if (playerX >= 600) {
playerX = 600;
} else {
moveRight();
}
}
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
if (playerX < 10) {
playerX = 10;
} else {
moveLeft();
}
}
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
if (!play) {
play = true;
ballposX = 120;
ballposY = 350;
ballXdir = -1;
ballYdir = -2;
score = 0;
totalBricks = 21;
map = new Mapgenerator(3, 7);
repaint();
}
}
}
public void moveRight() {
play = true;
playerX += 20;
}
public void moveLeft() {
play = true;
playerX -= 20;
}
@Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
}

Mapgenerator.java —블록들과 공 위치 지정&표시

package brickBracker;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
public class Mapgenerator {
public int map[][];
public int brickWidth;
public int brickHeight;
public Mapgenerator(int row, int col) {
map = new int[row][col];
for(int i=0; i<map.length; i++) {
for(int j=0; j<map[0].length; j++) {
map[i][j] = 1;
}
}
brickWidth = 540/col;
brickHeight = 150/row;
}
public void draw(Graphics2D g) {
for(int i=0; i<map.length; i++) {
for(int j=0; j<map[0].length; j++) {
if(map[i][j]> 0) {
g.setColor(Color.white);
g.fillRect(j*brickWidth + 80, i*brickWidth + 50, brickWidth, brickHeight);
g.setStroke(new BasicStroke(3));
g.setColor(Color.black);
g.drawRect(j*brickWidth + 80, i*brickWidth + 50, brickWidth, brickHeight);
}
}
}
}
public void setBrickValue(int value, int row, int col) {
map[row][col] = value;
}
}

2. 테트리스

package Tetris;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.Collections;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Tetirs extends JPanel {
private static final long serialVersionUID = -8715353373678321308L;
private final Point[][][] Tetraminos = {
// I-Piece
{
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(3, 1) },
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(1, 3) },
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(3, 1) },
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(1, 3) }
},
// J-Piece
{
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(2, 0) },
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(2, 2) },
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(0, 2) },
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(0, 0) }
},
// L-Piece
{
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(2, 2) },
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(0, 2) },
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(0, 0) },
{ new Point(1, 0), new Point(1, 1), new Point(1, 2), new Point(2, 0) }
},
// O-Piece
{
{ new Point(0, 0), new Point(0, 1), new Point(1, 0), new Point(1, 1) },
{ new Point(0, 0), new Point(0, 1), new Point(1, 0), new Point(1, 1) },
{ new Point(0, 0), new Point(0, 1), new Point(1, 0), new Point(1, 1) },
{ new Point(0, 0), new Point(0, 1), new Point(1, 0), new Point(1, 1) }
},
// S-Piece
{
{ new Point(1, 0), new Point(2, 0), new Point(0, 1), new Point(1, 1) },
{ new Point(0, 0), new Point(0, 1), new Point(1, 1), new Point(1, 2) },
{ new Point(1, 0), new Point(2, 0), new Point(0, 1), new Point(1, 1) },
{ new Point(0, 0), new Point(0, 1), new Point(1, 1), new Point(1, 2) }
},
// T-Piece
{
{ new Point(1, 0), new Point(0, 1), new Point(1, 1), new Point(2, 1) },
{ new Point(1, 0), new Point(0, 1), new Point(1, 1), new Point(1, 2) },
{ new Point(0, 1), new Point(1, 1), new Point(2, 1), new Point(1, 2) },
{ new Point(1, 0), new Point(1, 1), new Point(2, 1), new Point(1, 2) }
},
// Z-Piece
{
{ new Point(0, 0), new Point(1, 0), new Point(1, 1), new Point(2, 1) },
{ new Point(1, 0), new Point(0, 1), new Point(1, 1), new Point(0, 2) },
{ new Point(0, 0), new Point(1, 0), new Point(1, 1), new Point(2, 1) },
{ new Point(1, 0), new Point(0, 1), new Point(1, 1), new Point(0, 2) }
}
};
private final Color[] tetraminoColors = {
Color.cyan, Color.blue, Color.orange, Color.yellow, Color.green, Color.pink, Color.red
};
private Point pieceOrigin;
private int currentPiece;
private int rotation;
private ArrayList<Integer> nextPieces = new ArrayList<Integer>();
private long score;
private Color[][] well;
// Creates a border around the well and initializes the dropping piece
private void init() {
well = new Color[12][24];
for (int i = 0; i < 12; i++) {
for (int j = 0; j < 23; j++) {
if (i == 0 || i == 11 || j == 22) {
well[i][j] = Color.GRAY;
} else {
well[i][j] = Color.BLACK;
}
}
}
newPiece();
}
// Put a new, random piece into the dropping position
public void newPiece() {
pieceOrigin = new Point(5, 2);
rotation = 0;
if (nextPieces.isEmpty()) {
Collections.addAll(nextPieces, 0, 1, 2, 3, 4, 5, 6);
Collections.shuffle(nextPieces);
}
currentPiece = nextPieces.get(0);
nextPieces.remove(0);
}
// Collision test for the dropping piece
private boolean collidesAt(int x, int y, int rotation) {
for (Point p : Tetraminos[currentPiece][rotation]) {
if (well[p.x + x][p.y + y] != Color.BLACK) {
return true;
}
}
return false;
}
// Rotate the piece clockwise or counterclockwise
public void rotate(int i) {
int newRotation = (rotation + i) % 4;
if (newRotation < 0) {
newRotation = 3;
}
if (!collidesAt(pieceOrigin.x, pieceOrigin.y, newRotation)) {
rotation = newRotation;
}
repaint();
}
// Move the piece left or right
public void move(int i) {
if (!collidesAt(pieceOrigin.x + i, pieceOrigin.y, rotation)) {
pieceOrigin.x += i;
}
repaint();
}
// Drops the piece one line or fixes it to the well if it can't drop
public void dropDown() {
if (!collidesAt(pieceOrigin.x, pieceOrigin.y + 1, rotation)) {
pieceOrigin.y += 1;
} else {
fixToWell();
}
repaint();
}
// Make the dropping piece part of the well, so it is available for
// collision detection.
public void fixToWell() {
for (Point p : Tetraminos[currentPiece][rotation]) {
well[pieceOrigin.x + p.x][pieceOrigin.y + p.y] = tetraminoColors[currentPiece];
}
clearRows();
newPiece();
}
public void deleteRow(int row) {
for (int j = row-1; j > 0; j--) {
for (int i = 1; i < 11; i++) {
well[i][j+1] = well[i][j];
}
}
}
// Clear completed rows from the field and award score according to
// the number of simultaneously cleared rows.
public void clearRows() {
boolean gap;
int numClears = 0;
for (int j = 21; j > 0; j--) {
gap = false;
for (int i = 1; i < 11; i++) {
if (well[i][j] == Color.BLACK) {
gap = true;
break;
}
}
if (!gap) {
deleteRow(j);
j += 1;
numClears += 1;
}
}
switch (numClears) {
case 1:
score += 100;
break;
case 2:
score += 300;
break;
case 3:
score += 500;
break;
case 4:
score += 800;
break;
}
}
// Draw the falling piece
private void drawPiece(Graphics g) {
g.setColor(tetraminoColors[currentPiece]);
for (Point p : Tetraminos[currentPiece][rotation]) {
g.fillRect((p.x + pieceOrigin.x) * 26,
(p.y + pieceOrigin.y) * 26,
25, 25);
}
}
@Override
public void paintComponent(Graphics g)
{
// Paint the well
g.fillRect(0, 0, 26*12, 26*23);
for (int i = 0; i < 12; i++) {
for (int j = 0; j < 23; j++) {
g.setColor(well[i][j]);
g.fillRect(26*i, 26*j, 25, 25);
}
}
// Display the score
g.setColor(Color.WHITE);
g.drawString("" + score, 19*12, 25);
// Draw the currently falling piece
drawPiece(g);
}
public static void main(String[] args) {
JFrame f = new JFrame("Tetris 태인");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(12*26+10, 26*23+25);
f.setVisible(true);
final Tetirs game = new Tetirs();
game.init();
f.add(game);
// Keyboard controls
f.addKeyListener(new KeyListener() {
public void keyTyped(KeyEvent e) {
}
public void keyPressed(KeyEvent e) {
switch (e.getKeyCode()) {
case KeyEvent.VK_UP:
game.rotate(-1);
break;
case KeyEvent.VK_DOWN:
game.rotate(+1);
break;
case KeyEvent.VK_LEFT:
game.move(-1);
break;
case KeyEvent.VK_RIGHT:
game.move(+1);
break;
case KeyEvent.VK_SPACE:
game.dropDown();
game.score += 1;
break;
}
}
public void keyReleased(KeyEvent e) {
}
});
// Make the falling piece drop every second
new Thread() {
@Override public void run() {
while (true) {
try {
Thread.sleep(1000);
game.dropDown();
} catch ( InterruptedException e ) {}
}
}
}.start();
}
}

jar file로 export하는 법

File -> Export -> JAVA -> Runnable JAR file -> Next ->java파일 선택 -> 경로지정 -> next