enemypool.java

这是一个很经典的坦克大战手机游戏

import javax.microedition.lcdui.*;
public class EnemyPool{
    private Image enemyImage;
    public static Image enemyLeftNormal;
    public static Image enemyRightNormal;
    public static Image enemyUpNormal;
    public static Image enemyDownNormal;
    public static Image enemyLeftRed;
    public static Image enemyRightRed;
    public static Image enemyUpRed;
    public static Image enemyDownRed;
    public static Image enemyLeftGreen;
    public static Image enemyRightGreen;
    public static Image enemyUpGreen;
    public static Image enemyDownGreen;
    public static int frameWidth;
    public static int frameHeight;
    private static Graphics g = null;
  public EnemyPool() {
      //load the ordinary enemy tank picture
      try {
          enemyImage = Image.createImage("/tank_en.png");//敌人坦克
      }
      catch (Exception exception) {
          System.out.println(exception);
      }
      try {
            frameWidth = enemyImage.getWidth() / 4;
            frameHeight = enemyImage.getHeight();
            
            enemyLeftNormal = Image.createImage(frameWidth, frameHeight);
            g = enemyLeftNormal.getGraphics();
            g.drawImage(enemyImage, 0, 0, 20);
            enemyRightNormal = Image.createImage(frameWidth, frameHeight);
            g = enemyRightNormal.getGraphics();
            g.drawImage(enemyImage, -frameWidth, 0, 20);
            enemyUpNormal = Image.createImage(frameWidth, frameHeight);
            g = enemyUpNormal.getGraphics();
            g.drawImage(enemyImage, -frameWidth * 2, 0, 20);
            enemyDownNormal = Image.createImage(frameWidth, frameHeight);
            g = enemyDownNormal.getGraphics();
            g.drawImage(enemyImage, -frameWidth * 3, 0, 20);
        }
        catch (Exception exception) {
            System.out.println(exception);
        }
        //load red tanker picture
        try {
            enemyImage = Image.createImage("/tank_red.png");//红色坦克
        }
        catch (Exception exception) {
            System.out.println(exception);
        }
        try {

            enemyLeftRed = Image.createImage(frameWidth, frameHeight);
            g = enemyLeftRed.getGraphics();
            g.drawImage(enemyImage, 0, 0, 20);
            enemyRightRed = Image.createImage(frameWidth, frameHeight);
            g = enemyRightRed.getGraphics();
            g.drawImage(enemyImage, -frameWidth, 0, 20);
            enemyUpRed = Image.createImage(frameWidth, frameHeight);
            g = enemyUpRed.getGraphics();
            g.drawImage(enemyImage, -frameWidth * 2, 0, 20);
            enemyDownRed = Image.createImage(frameWidth, frameHeight);
            g = enemyDownRed.getGraphics();
            g.drawImage(enemyImage, -frameWidth * 3, 0, 20);
        }
        catch (Exception exception) {
            System.out.println(exception);
        }
        //load the Green enemy tank picture
      try {
          enemyImage = Image.createImage("/tank_green.png");
      }
      catch (Exception exception) {
          System.out.println(exception);
      }
      try {

            enemyLeftGreen = Image.createImage(frameWidth, frameHeight);
            g = enemyLeftGreen.getGraphics();
            g.drawImage(enemyImage, 0, 0, 20);
            enemyRightGreen = Image.createImage(frameWidth, frameHeight);
            g = enemyRightGreen.getGraphics();
            g.drawImage(enemyImage, -frameWidth, 0, 20);
            enemyUpGreen = Image.createImage(frameWidth, frameHeight);
            g = enemyUpGreen.getGraphics();
            g.drawImage(enemyImage, -frameWidth * 2, 0, 20);
            enemyDownGreen = Image.createImage(frameWidth, frameHeight);
            g = enemyDownGreen.getGraphics();
            g.drawImage(enemyImage, -frameWidth * 3, 0, 20);
        }
        catch (Exception exception) {
            System.out.println(exception);
        }
  }
}