gamesplash.java

J2ME的游戏原代码!希望能帮助有需要帮助的师兄弟们！

/*
 * GameSplash.java
 *
 * Created on den 8 augusti 2003, 08:48
 */


import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
import java.io.IOException;

public class GameSplash extends Canvas implements Runnable
{
  private static final int COLOR_WHITE = 0xFFFFFFFF;
  private static final int COLOR_BLACK = 0x00000000;
  private static final int COLOR_YELLOW = 0x00FFFF00;
  private static final int COLOR_LIGHT_BLUE = 0x0092FF;

  private GameShell canvas;

  private Display display;
  private Displayable previousDisplay;

  private Image splashImage;

  private boolean run;

  //Class simply prints the gameSplash to the screen

  public GameSplash(GameShell canvas, Display display, Displayable previousDisplay)
  {
	this.canvas = canvas;
    this.display = display;
    this.previousDisplay = previousDisplay;

    try
    {
      splashImage = Image.createImage("/pulldown/Image_8bit_16.png");
    }
    catch (IOException ioe)
    {
      System.out.println("Can't load splash image. " + ioe);
    }

    repaint();

    run = true;
  }

  public void run()
  {
    long startStamp =  System.currentTimeMillis();
    long endStamp = System.currentTimeMillis();


    //Loading of game-related images. This doesn't make any sense, I know.
    //Speed was of the essence in completing this game.

    short loadProgress = 0;
    while(loadProgress < 6)
    {
	  loadProgress++;
	  canvas.loadImages(loadProgress);
	}

    while (run)
    {
      if (endStamp - startStamp < 5000)
      {
        endStamp = System.currentTimeMillis();
      }
      else
      {
        run = false;
      }

      Thread.currentThread().yield();
    }

    terminateSplash();
  }

  protected void paint(Graphics g)
  {
    g.setColor(COLOR_LIGHT_BLUE);
    g.fillRect(0, 0, getWidth(), getHeight());

    if (getHeight() > splashImage.getHeight() && getWidth() > splashImage.getWidth())
	{
	  g.drawImage(splashImage, (getWidth() - splashImage.getWidth()) / 2, (getHeight() - splashImage.getHeight()) / 2, g.TOP | g.LEFT);
	}
	else if (getHeight() > splashImage.getHeight())
	{
	  g.drawImage(splashImage, 0, (getWidth() - splashImage.getWidth()) / 2, g.TOP | g.LEFT);
	}
	else if (getWidth() > splashImage.getWidth())
	{
	  g.drawImage(splashImage, (getHeight() - splashImage.getHeight()) / 2, 0, g.TOP | g.LEFT);
    }
    else
    {
      g.drawImage(splashImage, 0, 0, g.TOP | g.LEFT);
    }
  }

  public void terminateSplash()
  {
    display.setCurrent(previousDisplay);
  }

  public Canvas getCanvas()
  {
	return canvas;
  }

  protected void keyPressed(int keyCode)
  {
    if (keyCode > -1 || getGameAction(keyCode) > -1)
    {
      run = false;
    }
  }
}