space-game/src/sg/SpaceGame2.java

package sg;

import java.util.logging.Level;
import java.util.logging.Logger;

import sg.states.InGameState;
import sg.states.MenuState;

import com.jme.app.AbstractGame;
import com.jme.app.BaseGame;
import com.jme.input.KeyBindingManager;
import com.jme.input.KeyInput;
import com.jme.input.MouseInput;
import com.jme.input.joystick.JoystickInput;
import com.jme.renderer.ColorRGBA;
import com.jme.renderer.Renderer;
import com.jme.system.DisplaySystem;
import com.jme.system.JmeException;
import com.jme.util.GameTaskQueue;
import com.jme.util.GameTaskQueueManager;
import com.jme.util.TextureManager;
import com.jme.util.Timer;
import com.jmex.game.state.GameStateManager;

public class SpaceGame2 extends BaseGame {
	private static final Logger logger = Logger.getLogger(SpaceGame2.class.getName());
	
	public static final String TITLE = "SpaceGame";
	
	/** Time per frame */
	protected float tpf;
    /** High resolution timer for jME. */
    protected Timer timer;
	
	public static void main(String[] args) {
		SpaceGame2 game = new SpaceGame2();
		game.setConfigShowMode(ConfigShowMode.AlwaysShow);
		game.start(); 
	}

	   /**
     * Creates display, sets up camera, and binds keys. Called in
     * BaseGame.start() directly after the dialog box.
     *
     * @see AbstractGame#initSystem()
     */
    protected void initSystem() throws JmeException {
        logger.info(getVersion());
        try {
            /**
             * Get a DisplaySystem acording to the renderer selected in the
             * startup box.
             */
            display = DisplaySystem.getDisplaySystem(settings.getRenderer() );
            
            // Alpha bits to use for the renderer. Any changes must be made prior to call of start().
            display.setMinAlphaBits( 0 );
            // Depth bits to use for the renderer. Any changes must be made prior to call of start().
            display.setMinDepthBits( 8 );
            // Stencil bits to use for the renderer. Any changes must be made prior to call of start().
            display.setMinStencilBits( 0 );
            // Number of samples to use for the multisample buffer. Any changes must be made prior to call of start().         
            display.setMinSamples( 0 );

            /** Create a window with the startup box's information. */
            display.createWindow(settings.getWidth(), settings.getHeight(),
                    settings.getDepth(), settings.getFrequency(),
                    settings.isFullscreen() );
            logger.info("Running on: " + display.getAdapter()
                    + "\nDriver version: " + display.getDriverVersion() + "\n"
                    + display.getDisplayVendor() + " - "
                    + display.getDisplayRenderer() + " - "
                    + display.getDisplayAPIVersion());


        } catch ( JmeException e ) {
            /**
             * If the displaysystem can't be initialized correctly, exit
             * instantly.
             */
            logger.log(Level.SEVERE, "Could not create displaySystem", e);
            System.exit( 1 );
        }

        /** Set a black background. */
        display.getRenderer().setBackgroundColor( ColorRGBA.black.clone() );

        /** Get a high resolution timer for FPS updates. */
        timer = Timer.getTimer();
        
        GameStateManager.create();
        KeyBindingManager manager = KeyBindingManager.getKeyBindingManager();
        manager.set("mem_report", KeyInput.KEY_TAB);
        manager.set("exit", KeyInput.KEY_ESCAPE);

        /** Sets the title of our display. */
        display.setTitle( TITLE );

    }

	@Override
	protected void initGame() {
		GameStateManager.getInstance().cleanup();
		GameStateManager.getInstance().attachChild(new MenuState("menu"));
		GameStateManager.getInstance().attachChild(new InGameState("ingame"));
		
		timer.reset();
	}

	@Override
	protected void update(float interpolation) {
        /** Recalculate the framerate. */
        timer.update();
        /** Update tpf to time per frame according to the Timer. */
        tpf = timer.getTimePerFrame();
        
        // Execute updateQueue item
        GameTaskQueueManager.getManager().getQueue(GameTaskQueue.UPDATE).execute();

		GameStateManager.getInstance().update(tpf);
		
		
        if ( KeyBindingManager.getKeyBindingManager().isValidCommand(
                "mem_report", false ) ) {
            long totMem = Runtime.getRuntime().totalMemory();
            long freeMem = Runtime.getRuntime().freeMemory();
            long maxMem = Runtime.getRuntime().maxMemory();
            
            logger.info("|*|*|  Memory Stats  |*|*|");
            logger.info("Total memory: "+(totMem>>10)+" kb");
            logger.info("Free memory: "+(freeMem>>10)+" kb");
            logger.info("Max memory: "+(maxMem>>10)+" kb");
        }

        if ( KeyBindingManager.getKeyBindingManager().isValidCommand( "exit",
                false ) ) {
            finish();
        }
	}
	
    /**
     * Clears stats, the buffers and renders bounds and normals if on.
     *
     * @param interpolation unused in this implementation
     * @see AbstractGame#render(float interpolation)
     */
    protected void render( float interpolation ) {
        Renderer r = display.getRenderer();
        /** Clears the previously rendered information. */
        r.clearBuffers();
        
        // Execute renderQueue item
        GameTaskQueueManager.getManager().getQueue(GameTaskQueue.RENDER).execute();
        
        GameStateManager.getInstance().render(tpf);
    }

	@Override
	protected void reinit() {
				
	}
	
    /**
     * Cleans up the keyboard.
     *
     * @see AbstractGame#cleanup()
     */
    protected void cleanup() {
        logger.info( "Cleaning up resources." );

        TextureManager.doTextureCleanup();
        if (display != null && display.getRenderer() != null)
            display.getRenderer().cleanup();
        KeyInput.destroyIfInitalized();
        MouseInput.destroyIfInitalized();
        JoystickInput.destroyIfInitalized();
    }
	
    /**
     * Calls the quit of BaseGame to clean up the display and then closes the JVM.
     */
    protected void quit() {
        super.quit();
        System.exit( 0 );
    }
}