使用Jbulider开发J2ME移动游戏程序

来源：长理培训发布时间：2017-12-22 10:15:07

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　　这是一篇关于怎样使用JBuilder开发j2me程序的例子。本人使用JBuilder2005,2005自带WTK2.1，自己下载2.2版本，2.2那个默认的模拟器很好用。另外,Jbuilder X下的WTK也是2.0的版本好象。Jbuilder 9的WTK是1.04。

点击jdk后面的路径按钮,继续:

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接着点击file->New:

然后在对话框左边选择Micro,你就能看到右边出现MIDlet,Displayable.

接上面的:如图示

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点击MIDlet or Displayable,则让你输入MIDlet的名字.如图:

继续下一步,让你输入一个Displayable的名字,包括类型(form,canvas等),是否自动加载Command

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然后Jbuilder自动生成所需代码,以及Jbuilder自加的一些东西.你可以添加或修改之.

这里我将本站一篇关于介绍Gamecanvas的文章的代码拿过来,做少量修改,作为章的一个演示;

TestMIDlet.java文件:

package temps;

import javax.microedition.midlet.*;

/**
*
*
*
*
* @version 1.0
public class TestMIDlet extends MIDlet
private Display display;

public void startApp()
try
display = Display.getDisplay(this);
gameCanvas.start();
}
{
}

public Display getDisplay()
return display;

public void pauseApp()
}

public void destroyApp(boolean unconditional)
exit();

public void exit()
System.gc();
notifyDestroyed();
}

Displayable1.java内容:

import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
* Title:
* Description:
* Copyright: Copyright (c) 2005
* Company:
* @author not attributable
*/
{
private long delay; // To give thread consistency
private int width; // To hold screen width
private Random random=new Random(System.currentTimeMillis());
private int counter=0;
private int enemyDirect=0;

private boolean isalive=true;

// Sprites to be used
private Sprite backgroundSprite;

// Layer Manager

// Constructor and initialization
{
width = getWidth();

currentX = width / 2;
enemyX=width/4;
delay = 100;

Image playerImage=null;
Image enemy=null;
try
playerImage = Image.createImage("/transparent.png");
enemy=Image.createImage("/frames.png");
catch(Exception e)
System.out.println("get Image error!"+e.getMessage());

playerSprite = new Sprite(playerImage, 32, 32);
enemySprite=new Sprite(enemy,50,21);
layerManager = new LayerManager();
layerManager.append(enemySprite);

}

// Automatically start thread for game loop
{
Thread t = new Thread(this);
}

public void stop()
isPlay = false;

// Main Game Loop
{
while (isPlay == true)
input();
try
Thread.sleep(delay);
catch (InterruptedException ie)

}
}

// Method to Handle User Inputs
{

playerSprite.setFrame(0);
{
{
}
switch(enemyDirect)
case 0:
break;
enemyY=Math.min(++enemyY,height-enemySprite.getHeight());
case 2:
break;
enemyX=Math.min(++enemyX,width-enemySprite.getWidth());
}
enemySprite.setFrame(sequence[counter]);
else
enemyY+=counter;

if(enemyY counter++;
}

// Left
{
playerSprite.setFrame(1);

// Right
if (currentX + 5 < width)
currentX = Math.min(width, currentX + 1);
}

// Up
{
playerSprite.setFrame(2);

// Down
{
}

if ((keyStates & DOWN_PRESSED) != 0)
if(isdown)
if (currentY + 10 < height)
currentY = Math.min(height, currentY + 1);
}
}

if((keyStates & FIRE_PRESSED)!=0)
isalive=!isalive;
}

if(!(enemyX+enemySprite.getWidth()currentX+playerSprite.getWidth() || enemyY>currentY+playerSprite.getHeight()) && isalive)
counter=0;
}

// Method to Display Graphics
{
g.fillRect(0, 0, getWidth(), getHeight());

// updating player sprite position
enemySprite.setPosition(enemyX,enemyY);

layerManager.setViewWindow(0, 0, width, height);

g.setColor(0xffffff);
}