基于J2ME WTK的2D手机游戏开发(英文文献翻译) 第14页
public void getAnimation() {// 将要改变的图片赋上固定值
  for (int i = 0; i < data.length; i++) {
   for (int j = 0; j < data[0].length; j++) {
    switch (data[i][j]) {
    case 55:
     data[i][j] = -1;
     break;
    case 56:
     data[i][j] = -2;
     break;
    case 65:
     data[i][j] = -3;
     break;
    case 66:
     data[i][j] = -4;
     break;
    case 75:
     data[i][j] = -5;
     break;
    case 76:
     data[i][j] = -6;
     break;
    }
   }
  }
 }
 public void update() {
  aniCounter = ++aniCounter % 3;
  for (int i = 0; i < map_num.length; i++) {
   this.setAnimatedTile(AIN[i], map_num[i] + aniCounter * 2);
  }
 }
}
Tools类
import javax.microedition.lcdui.Image;

public class Tools {
 static final int UP_TYPE = -1;// 向上按键
 static final int DOWN_TYPE = -2;// 向下按键
 static final int LIFT_TYPE = -3;// 向左按键
 static final int RIGHT_TYPE = -4;// 向右按键
 static final int ATTACK_TYPE = -5;// 攻击键
 static final int L_TYPE = -6;//左按键
 static final int R_TYPE = -7;//右按键
 static final byte  PLAY=0,LOADING=3,LOGO=1;//
 public static final byte LEFT = 7, RIGHT = 8;
 // 读图片
 public static Image read_image(String filename) {
  Image img = null;
  try {
   img = Image.createImage("/" + filename + ".png");
  } catch (Exception e) {
   // TODO 自动生成 catch 块
//   System.out.println("图象加载错误 " + filename);
  }
  return img;
 }
}
ScreenBase类
public abstract class ScreenBase {
   public ScreenBase() {
  // TODO Auto-generated constructor stub
 }
/**
 * 逻辑更新
 */
 public abstract void update();
/**
 * 按键
 * @param iAction
 */
 public abstract void input(int iAction);
/**
 * 画图
 * @param grap 画笔
 */
 public abstract void render();
/**
 * 释放
 */
 public abstract void free();
  // TODO Auto-generated method stub

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