package volley;
import java.awt.*;
public interface Drawable {
public void drawObject(Graphics g);
}
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package volley;
public interface Movable {
public void doLogic(long delta);
public void move(long delta);
}
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package volley;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import java.util.Vector;
import javax.imageio.ImageIO;
import javax.swing.*;
public class GamePanel extends JPanel implements Runnable, KeyListener {
private static final long serialVersionUID = 1L;
boolean game_running = true;
boolean started = false;
boolean once = false;
long delta = 0;
long last = 0;
long fps = 0;
boolean up = false;
boolean left = false;
boolean right = false;
int speed = 50;
BufferedImage background;
Heli copter;
Vector<Sprite> actors;
double startPoint = 0;
public static void main(String[] args) {
new GamePanel(800,600);
}
public GamePanel(int w, int h) {
this.setPreferredSize(new Dimension(w,h));
JFrame frame = new JFrame("Volley");
frame.setLocation(0,0);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.addKeyListener(this);
frame.add(this);
frame.pack();
frame.setVisible(true);
doInitializations();
}
private void doInitializations() {
last = System.nanoTime();
actors = new Vector<Sprite>();
BufferedImage[] heli = loadPics("volley/pics/figur.gif", 1);
background = loadPics("volley/pics/background.gif", 1)[0];
copter = new Heli(heli,100,450,100,this);
actors.add(copter);
startPoint = copter.getY();
if(!once) {
once = true;
Thread t = new Thread(this);
t.start();
}
}
public void run() {
while(game_running) {
if(isStarted()) {
computeDelta();
doLogic();
moveObjects();
checkKeys();
}
repaint();
try {
Thread.sleep(10);
}
catch(InterruptedException e) {
}
}
}
private void doLogic() {
for(Movable mov:actors) {
mov.doLogic(delta);
}
}
private void moveObjects() {
for(Movable mov:actors) {
mov.move(delta);
}
}
private void computeDelta() {
delta = System.nanoTime() - last;
last = System.nanoTime();
fps = ((long) 1e9) / delta;
}
private void checkKeys() {
if(up){
copter.setVerticalSpeed(-speed);
}
if(right){
copter.setHorizontalSpeed(speed);
}
if(left){
copter.setHorizontalSpeed(-speed);
}
if(!up){
copter.setVerticalSpeed(0);
}
if(!left&&!right){
copter.setHorizontalSpeed(0);
}
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(background, 0, 0, this);
g.setColor(Color.red);
g.drawString("FPS: " + Long.toString(fps), 20, 10);
if(!isStarted()) {
return;
}
if(actors!=null) {
for(Drawable draw:actors) {
draw.drawObject(g);
}
}
}
private BufferedImage[] loadPics(String path, int pics) {
BufferedImage[] anim = new BufferedImage[pics];
BufferedImage source = null;
URL pic_url = getClass().getClassLoader().getResource(path);
try{
source = ImageIO.read(pic_url);
}
catch(IOException e) {
}
for(int x=0;x<pics;x++){
anim[x] = source.getSubimage(x*source.getWidth()/pics, 0,
source.getWidth()/pics, source.getHeight());
}
return anim;
}
public void keyPressed(KeyEvent e) {
if(e.getKeyCode()==KeyEvent.VK_UP){
up = true;
}
if(e.getKeyCode()==KeyEvent.VK_LEFT){
left = true;
}
if(e.getKeyCode()==KeyEvent.VK_RIGHT){
right = true;
}
}
public void keyReleased(KeyEvent e) {
if(e.getKeyCode()==KeyEvent.VK_UP){
up = false;
copter.setY(startPoint);
}
if(e.getKeyCode()==KeyEvent.VK_LEFT){
left = false;
}
if(e.getKeyCode()==KeyEvent.VK_RIGHT){
right = false;
}
if(e.getKeyCode()==KeyEvent.VK_ENTER){
if(!isStarted()) {
doInitializations();
setStarted(true);
}
}
if(e.getKeyCode()==KeyEvent.VK_ESCAPE){
if(isStarted()) {
setStarted(false);
}else {
setStarted(false);
System.exit(0);
}
}
}
public void keyTyped(KeyEvent e) {
}
public boolean isStarted() {
return started;
}
public void setStarted(boolean started) {
this.started = started;
}
}
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package volley;
import java.awt.Graphics;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
public abstract class Sprite extends Rectangle2D.Double implements Drawable, Movable {
long delay;
long animation = 0;
GamePanel parent;
BufferedImage[] pics;
int currentpic = 0;
protected double dx;
protected double dy;
public Sprite(BufferedImage[] i, double x, double y, long delay, GamePanel p) {
pics = i;
this.x = x;
this.y = y;
this.delay = delay;
this.width = pics[0].getWidth();
this.height = pics[0].getHeight();
parent = p;
}
public void drawObject(Graphics g) {
g.drawImage(pics[currentpic], (int) x, (int) y, null);
}
public void doLogic(long delta) {
animation += (delta/1000000);
if(animation > delay) {
animation = 0;
computeAnimation();
}
}
private void computeAnimation() {
currentpic ++;
if(currentpic >= pics.length) {
currentpic = 0;
}
}
public void move(long delta) {
if(dx != 0) {
x += dx*(delta/1e9);
}
if(dy != 0) {
y += dy*(delta/1e9);
}
}
public void setVerticalSpeed(double d) {
this.dy = d;
}
public void setHorizontalSpeed(double d) {
this.dx = d;
}
public double getVerticalSpeed() {
return dy;
}
public double getHorizontalSpeed() {
return dx;
}
public void setX(double i){
x = i;
}
public void setY(double i){
y = i;
}
}
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package volley;
import java.awt.image.BufferedImage;
public class Heli extends Sprite {
public Heli(BufferedImage[] i, double x, double y, long delay, GamePanel p) {
super(i, x, y, delay, p);
}
public void doLogic(long delta) {
super.doLogic(delta);
if(getX()<0){
setHorizontalSpeed(0);
setX(0);
}
if(getX()+getWidth()>parent.getWidth()){
setX(parent.getWidth()-getWidth());
setHorizontalSpeed(0);
}
if(getY()<0){
setY(0);
setVerticalSpeed(0);
}
if(getY()+getHeight()>parent.getHeight()){
setY(parent.getHeight()-getHeight());
setVerticalSpeed(0);
}
}
}
