| Scriptr |
06-14-2012 05:01 PM |
Repaint Not Working
I have the following code for a SpaceInvaders game, and repaint doesn't do anything.
Using System.out.println() for debugging, I have noticed everything works smoothly, but repaint does nothing.
Paint throws an error from the super.graphicsComponent(); if called directly with paint(getGraphics());
Code:
public class Launcher extends JFrame{
private JButton nGame;
private JButton lGame;
private String dir = "";
public Launcher(){
super("Space Invaders");
setLayout(new FlowLayout(FlowLayout.CENTER));
if(isWindows()){
System.out.println("Windows");
dir = System.getenv("APPDATA") + "\\.SInvaders\\";
}
if(isUnix()){
System.out.println("Linux/Unix");
dir = "~/SInvaders/";
}
if(isMac()){
System.out.println("Mac");
dir = System.getProperty("user.home") + "/Library/Application Support/SInvaders/";
}
nGame = new JButton("New Game");
lGame = new JButton("Load Save");
File sav = new File(dir+"save.sav");
add(nGame);
add(lGame);
nGame.addActionListener(new HC(false,dir));
lGame.addActionListener(new HC(true,dir));
if(!sav.exists()){
lGame.setEnabled(false);
}
}
//OS Detection functions, isWindows(), isUnix(), isMac()
private class HC implements ActionListener {
boolean load;
String dir;
public GameInit g;
public GameInit g2;
public HC(boolean load, String dir){
this.load = load;
this.dir = dir;
}
@Override
public void actionPerformed(ActionEvent arg0) {
remove(nGame);
remove(lGame);
repaint();
try {
//Launch the GameInit
g = new GameInit(load,dir);
//make it visible
add(g);
g.setVisible(true);
g.setFocusable(true);
//give it focus
g.requestFocusInWindow();
g.requestFocus();
//enlarge it to populate the entire JFrame
g.setSize(400, 600);
g.repaint();
//add key listener to JPanel, passing it the character's X coordinate
g.addKeyListener(new KL(g.charX));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private class KL implements KeyListener{
private int x;
public KL(int x){
this.x = x;
}
@Override
public void keyPressed(KeyEvent e) {
int code = e.getKeyCode();
if(code == KeyEvent.VK_LEFT){
if(this.x > 0){
this.x -= 10;
System.out.println(this.x);
new GameInit(this.x);
System.out.println("Left");
}
}else if(code == KeyEvent.VK_RIGHT){
if(this.x < 336){
this.x += 10;
System.out.println("Right");
}
}else if(code == KeyEvent.VK_SPACE){
System.out.println("Fire");
fire(g.charX);
}
}
@Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
public void fire(int x){
}
}
}
}
Where GameInit is the following:
Code:
public class GameInit extends JPanel{
public int points;
public int lives;
public Image heart;
public Image player;
public boolean imLoad = false;
public String dir;
public int charX = 125;
public GameInit(){
}
public GameInit(int x){
this.charX = x;
repaint();
}
public GameInit(boolean load, String dir) throws IOException{
if(load){
Scanner p = new Scanner(new FileInputStream(dir+"save.sav"));
points = Integer.parseInt(p.nextLine());
lives = Integer.parseInt(p.nextLine());
}else{
points = 0;
lives = 3;
}
this.dir = dir;
loadImages();
}
public void loadImages(){
if((new File(dir+"life.png").exists())){
heart = new ImageIcon(dir+"life.png").getImage();
}else{
System.out.println("No File \"" + dir + "life.png\"");
}
if((new File(dir+"char.png").exists())){
player = new ImageIcon(dir+"char.png").getImage();
}else{
System.out.println("No File \"" + dir + "char.png\"");
}
if(player != null && heart != null)
imLoad = true;
}
public void paint(Graphics g) {
super.paintComponent(g);
super.setBackground(Color.BLACK);
if(g instanceof Graphics2D){
Graphics2D g2 = (Graphics2D)g;
Font def = new Font("Courier New", Font.BOLD, 16);
g.setFont(def);
g.setColor(Color.WHITE);
g.drawString(Integer.toString(points), 10, 568);
//g.drawString(Integer.toString(lives), 384, 568);
if(imLoad){
for(int x = 374; ((400 - x) / 16) <= lives; x = x - 16){
g.drawImage(heart, x, 558, null);
}
g.drawImage(player, this.charX, 490, null);
}else{
System.out.println("Could not acquire 1 or more image(s)");
}
}
}
}
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