2 * Copyright (c) 2003-2009 jMonkeyEngine
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35 import java.util.logging.Level;
36 import java.util.logging.Logger;
38 import com.jme.renderer.Renderer;
39 import com.jme.system.GameSettings;
42 * A game implementation suitable for use in 'headless' applications.
44 * This is basically identical to {@link BaseGame} expect for the fact that it
45 * does not update the user input or call {@code Thread#yield()} on each pass
46 * through the main loop.
48 * @author Joshua Slack, Mark Powell, Eric Woroshow
49 * @version $Revision$, $Date$
51 public abstract class BaseHeadlessApp extends AbstractGame {
52 private static final Logger logger = Logger.getLogger(BaseHeadlessApp.class
56 * The simplest main game loop possible: render and update as fast as
59 public final void start() {
60 logger.info( "Application started.");
66 assertDisplayCreated();
71 Renderer r = display.getRenderer();
72 while (!finished && !display.isClosing()) {
73 //update game state, do not use interpolation parameter
80 r.displayBackBuffer();
84 logger.logp(Level.SEVERE, this.getClass().toString(), "start()", "Exception in game loop", t);
89 logger.info( "Application ending.");
97 * Quits the program abruptly using <code>System.exit</code>.
98 * @see AbstractGame#quit()
100 protected void quit() {
107 * @param interpolation unused in this implementation
108 * @see AbstractGame#update(float interpolation)
110 protected abstract void update(float interpolation);
113 * @param interpolation unused in this implementation
114 * @see AbstractGame#render(float interpolation)
116 protected abstract void render(float interpolation);
119 * @see AbstractGame#initSystem()
121 protected abstract void initSystem();
124 * @see AbstractGame#initGame()
126 protected abstract void initGame();
129 * @see AbstractGame#reinit()
131 protected abstract void reinit();
134 * @see AbstractGame#cleanup()
136 protected abstract void cleanup();
140 * @see AbstractGame#getNewSettings
142 protected GameSettings getNewSettings() {