我遇到了一個Java實例化類的問題,實質上它每次都會產生一個新的世界,當程序運行時這有點令人沮喪。 雖然我需要做的是實例化它,然後訪問類中的變量。Java - 在循環中實例化一個類
下面的代碼:
Background.java
public class Background extends UserView {
private BufferedImage bg;
private static Game game;
public Background(World w, int width, int height) {
super(w, width, height);
try {
bg = ImageIO.read(new File("data/background.jpg"));
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void paintBackground(Graphics2D g) {
super.paintBackground(g);
game = new Game();
g.drawImage(bg, 0, 0, this);
int level = game.getLevel();
g.drawString("Level: " + level, 25, 25);
}
}
Game.java
public Game() {
// make the world
level = 1;
world = new Level1();
world.populate(this);
// make a view
view = new Background(world, 500, 500);
// uncomment this to draw a 1-metre grid over the view
// view.setGridResolution(1);
// display the view in a frame
JFrame frame = new JFrame("Save the Princess");
// quit the application when the game window is closed
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationByPlatform(true);
// display the world in the window
frame.add(view);
// don't let the game window be resized
frame.setResizable(false);
// size the game window to fit the world view
frame.pack();
// make the window visible
frame.setVisible(true);
// get keyboard focus
frame.requestFocus();
// give keyboard focus to the frame whenever the mouse enters the view
view.addMouseListener(new GiveFocus(frame));
controller = new Controller(world.getPlayer());
frame.addKeyListener(controller);
// start!
world.start();
}
/** Run the game. */
public static void main(String[] args) {
new Game();
}
任何幫助,將不勝感激!謝謝!
循環在哪裏? – 2015-03-02 21:58:51
抱歉,由於某種原因,當我運行遊戲時,它只是循環運行,已經更新了主類中的代碼。 – Henry 2015-03-02 22:00:47