import java.io.IOException;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.lcdui.game.LayerManager;
import javax.microedition.lcdui.game.Sprite;
import javax.microedition.lcdui.game.TiledLayer;
public class WalkGameCanvas_18 extends GameCanvas implements Runnable{
private Graphics g;
private Image i1,i2;
private Sprite splayer;
private LayerManager lm;
private int [][]map;
private int []right=new int[]{3,4,5};
private int []left=new int[]{9,10,11};
private int []up=new int[]{0,1,2};
private int []down=new int[]{6,7,8};
private TiledLayer t;
private int viewX,y,x,viewY;
private int keyState;
private boolean rightFlag;
private boolean leftFlag;
private boolean upFlag;
private boolean downFlag;
WalkGameCanvas_18(){
super(true);
g=this.getGraphics();
try{
i1=Image.createImage("/item01.png");
i2=Image.createImage("/walk.png");
}catch(IOException e){
e.printStackTrace();
}
t=new TiledLayer(20,18,i1,16,16);
map=new int[][]{
{ 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 1, 2, 16, 17, 16, 17, 16, 17, 16, 17, 16, 17,
16, 22, 16, 17 },
{ 11, 12, 11, 12, 6, 7, 11, 12, 11, 12, 3, 4, 5, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 16, 17, 16, 17, 16, 17, 8, 9, 10, 17, 16, 17,
16, 22, 16, 17 },
{ 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 16, 17, 16, 17, 16, 17, 16, 17, 16, 17, 16, 17,
16, 22, 16, 17 },
{ 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 16, 17, 16, 17, 16, 17, 13, 14, 15, 17, 16, 17,
16, 22, 16, 17 },
{ 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 18, 19, 20, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 21, 21, 21, 22, 22, 21, 21, 17, 24, 25, 16, 17,
16, 22, 16, 17 },
{ 11, 12, 11, 12, 21, 21, 23, 21, 21, 21, 21, 12, 11, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 26, 27, 28, 29, 30, 17, 16, 17, 16, 17, 16, 17,
16, 22, 16, 17 },
{ 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 16, 17, 16, 17, 16, 17, 33, 34, 16, 17, 16, 17,
16, 22, 16, 17 },
{ 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 35, 36, 11, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 16, 17, 16, 17, 16, 17, 16, 17, 16, 17, 16, 17,
16, 22, 16, 17 },
{ 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12, 11, 12,
11, 12, 11, 12 },
{ 16, 22, 16, 17, 16, 17, 16, 31, 32, 17, 16, 17, 16, 17, 16, 17,
16, 22, 16, 17 }
};
for(int i=0;i<18;i++)
for(int j=0;j<20;j++)
t.setCell(j, i, map[i][j]);
splayer=new Sprite(i2,i2.getWidth()/12,i2.getHeight());
lm=new LayerManager();
lm.append(splayer);
lm.append(t);
new Thread(this).start();
}
本文介绍了一种封装方法，通过将复杂的过程封装进一个易于使用的类中来简化开发过程。这种方法有助于提高工作效率并减少重复劳动，使得开发者能够更加专注于核心业务逻辑。
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