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import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Dimension;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseWheelListener;
import java.awt.event.MouseWheelEvent;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
import java.awt.event.ComponentListener;
import java.awt.event.ComponentEvent;
import java.lang.Runnable;
import java.lang.Thread;
import java.awt.Toolkit;
public class Subconscious
extends JPanel
implements Runnable, MouseListener, KeyListener,
ComponentListener, MouseWheelListener {
public static final String TITLE = "Subconscious";
public static final long RENDER_PERIOD_MS = 10;
/* graphics */
private JFrame window;
private Scene currentScene;
private Graphics dbg = null; // double buffered graphics
private Image dbImage = null; // double buffered image
private Thread animator = null;
/* game */
// private volatile boolean gamePaused = false;
private volatile boolean gameOver = false;
private volatile boolean running = false;
public Subconscious() {
createWindow();
// setup component
addMouseListener(this);
addKeyListener(this);
addComponentListener(this);
addMouseWheelListener(this);
setFocusable(true);
requestFocus();
// TODO remove demo
currentScene = new WorldScene(new Dimension(200, 200), 50);
}
private void createWindow() {
window = new JFrame(TITLE);
window.setSize(new Dimension(800, 600));
window.setMinimumSize(getSize());
window.setLocationRelativeTo(null); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.add(this);
}
/* game logic */
private void gameLoop() {
}
private void gameRender() {
if (dbImage == null) {
dbImage = createImage(getWidth(), getHeight());
if (dbImage == null) {
System.out.println("ERROR: Cannot create image");
return;
}
}
dbg = dbImage.getGraphics();
dbg.fillRect(0, 0, getWidth(), getHeight());
currentScene.render(dbg);
}
public void gameStart() {
if (animator == null || !running) {
animator = new Thread(this);
animator.start();
}
}
/* animator and game thread */
@Override
public void run() {
long beforeTime, afterTime, sleepTime;
int skipFrame = 0;
window.setVisible(true);
beforeTime = System.currentTimeMillis();
running = true;
while (running) {
gameLoop();
gameRender();
repaint();
// could be better with NanoSeconds, but this is
// probably enough for this
afterTime = System.currentTimeMillis();
sleepTime = RENDER_PERIOD_MS - (beforeTime - afterTime);
if (sleepTime < 0) {
skipFrame++;
continue;
}
if (skipFrame > 0)
skipFrame--;
try {
Thread.sleep(sleepTime);
} catch (InterruptedException ex) {}
beforeTime = System.currentTimeMillis();
}
window.dispose();
System.exit(0);
}
/* graphics */
@Override
public void paintComponent(Graphics g) {
if (dbImage != null) {
g.drawImage(dbImage, 0, 0, null);
}
Toolkit.getDefaultToolkit().sync(); // needed on linux
g.dispose();
}
/* listeners */
@Override public void mousePressed(MouseEvent e) {}
@Override public void mouseReleased(MouseEvent e) {}
@Override public void mouseEntered(MouseEvent e) {}
@Override public void mouseExited(MouseEvent e) {}
@Override
public void mouseClicked(MouseEvent e) {
currentScene.mouseClicked(e.getX(), e.getY());
}
@Override public void keyPressed(KeyEvent e) {}
@Override public void keyTyped(KeyEvent e) {}
@Override
public void keyReleased(KeyEvent e) {
int keyCode = e.getKeyCode();
if (keyCode == KeyEvent.VK_Q && e.isControlDown()) {
running = false;
}
if (keyCode == KeyEvent.VK_DOWN) {
currentScene.pan(0, -10);
//rerender
dbImage = null;
}
if (keyCode == KeyEvent.VK_UP) {
currentScene.pan(0, 10);
//rerender
dbImage = null;
}
if (keyCode == KeyEvent.VK_LEFT) {
currentScene.pan(10, 0);
//rerender
dbImage = null;
}
if (keyCode == KeyEvent.VK_RIGHT) {
currentScene.pan(-10, 0);
//rerender
dbImage = null;
}
}
@Override
public void mouseWheelMoved(MouseWheelEvent e) {
int value = e.getWheelRotation();
currentScene.zoom(value * -1);
//rerender
dbImage = null;
}
@Override public void componentHidden(ComponentEvent e) {}
@Override public void componentShown(ComponentEvent e) {}
@Override public void componentMoved(ComponentEvent e) {}
@Override
public void componentResized(ComponentEvent e) {
dbImage = null; // create new image with the correct size
}
/* main */
public static void main(String args[]) {
Subconscious g = new Subconscious();
g.gameStart();
}
}
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