J2ME 拼图游戏 快速开发 全过程 （二）——游戏开始界面设计

源码：

/*

* Created on 2004-6-20

*

* TODO To change the template for this generated file go to

* Window - Preferences - Java - Code Style - Code Templates

*/

package cn.edu.xtu.tilepuzzle.ui;

import cn.edu.xtu.tilepuzzle.GameDB;

import javax.microedition.lcdui.Canvas;

import javax.microedition.lcdui.Command;

import javax.microedition.lcdui.CommandListener;

import javax.microedition.lcdui.Displayable;

import javax.microedition.lcdui.Graphics;

import cn.edu.xtu.tilepuzzle.contorller.MainUIController;

/**

* @author P2800

*

* TODO To change the template for this generated type comment go to

* Window - Preferences - Java - Code Style - Code Templates

*/

public class MainMenuUI extends Canvas implements CommandListener{



static final int lowColor = 0x000000FF;

static final int highColor = 0x00FF0000;

static final int highBGColor = 0x00CCCCCC;



public int width;

public int height;



static int startHeight;



static final int spacing = GameDB.MONOSPACE_BOLD_LARGE_Font.getHeight() ;



static String[] mainMenu;



private MainUIController mainUIController;



private int lineHeight ;



static int menuIdx;



private Command ok;

private Command cancel;



public MainMenuUI(MainUIController mainUIController) {

this.mainUIController=mainUIController;

//this.setFullScreenMode(true);



this.width = getWidth();

this.height = getHeight();



//System.out.println("屏幕的宽，高："+width+","+height);

mainMenu=GameDB.menu;



startHeight = GameDB.MONOSPACE_BOLD_LARGE_Font.getHeight();

//startHeight = (height - startHeight) ;



menuIdx = 0;

ok = new Command("选择", Command.OK, 1);

cancel = new Command("退出", Command.CANCEL, 0);



lineHeight=this.height/mainMenu.length;



addCommand(ok);

addCommand(cancel);

setCommandListener(this);

// System.out.println("=2");

this.mainUIController.setOPtions(this);

}



protected void paint(Graphics g) {

// TODO Auto-generated method stub



if(mainUIController.getBoardModel().getGameState()==GameDB.PLAYING){

mainMenu[0] = "恢复游戏";

mainMenu[1] = "新游戏";

}else {

mainMenu[0] = "新游戏";

mainMenu[1] = "设置图片";

}

g.setColor(255, 255, 190);

g.fillRect(0, 0, width, height);



//System.out.println("屏幕的宽，高："+width+","+height);



for (int i = 0; i < mainMenu.length; i++) {

if (i == menuIdx) {

g.setColor(highBGColor);

g.fillRect(0, i * lineHeight , width, lineHeight);

g.setFont(GameDB.MONOSPACE_BOLD_LARGE_Font);

g.setColor(highColor);

g.drawString(mainMenu[i], (width - GameDB.MONOSPACE_BOLD_LARGE_Font.stringWidth(mainMenu[i])) / 2, i * lineHeight+(lineHeight-GameDB.MONOSPACE_BOLD_LARGE_Font.getHeight())/2 , Graphics.LEFT | Graphics.TOP);

} else {

g.setFont(GameDB.MONOSPACE_PLAIN_MEDIUM_Font);

g.setColor(lowColor);

g.drawString(mainMenu[i], (width - GameDB.MONOSPACE_PLAIN_MEDIUM_Font.stringWidth(mainMenu[i])) / 2,i * lineHeight+(lineHeight-GameDB.MONOSPACE_PLAIN_MEDIUM_Font.getHeight())/2 , Graphics.LEFT | Graphics.TOP);

}

/*

if (i == menuIdx) {

g.setColor(highBGColor);

g.fillRect(0, startHeight + (i * GameDB.MONOSPACE_BOLD_LARGE_Font.getHeight()*3/2) , width, startHeight*3/2);

g.setFont(GameDB.MONOSPACE_BOLD_LARGE_Font);

g.setColor(highColor);

g.drawString(mainMenu[i], (width - GameDB.MONOSPACE_BOLD_LARGE_Font.stringWidth(mainMenu[i])) / 2, startHeight + (i * startHeight*3/2)+startHeight/4 , Graphics.LEFT | Graphics.TOP);

} else {

g.setFont(GameDB.MONOSPACE_PLAIN_MEDIUM_Font);

g.setColor(lowColor);

g.drawString(mainMenu[i], (width - GameDB.MONOSPACE_PLAIN_MEDIUM_Font.stringWidth(mainMenu[i])) / 2, startHeight + (i * startHeight*3/2+startHeight/4) , Graphics.LEFT | Graphics.TOP);

}*/

}

}



protected void keyPressed(int code) {

//System.out.println(code);

if(code==-5||code==5)

mainUIController.handleCOMMAND_ID(menuIdx);

if (getGameAction(code) == Canvas.UP ) {

if(menuIdx - 1 >= 0)

menuIdx--;

else

menuIdx=mainMenu.length-1;

} else if (getGameAction(code) == Canvas.DOWN ) {

if(menuIdx + 1 < mainMenu.length)

menuIdx++;

else

menuIdx=0;

} else;



//System.out.println("menuIdx = " + (menuIdx)+":"+mainMenu[menuIdx]);

repaint();

}



public void commandAction(Command c, Displayable arg1) {

// TODO Auto-generated method stub

if(c==ok){

mainUIController.handleCOMMAND_ID(menuIdx);

}else if(c==cancel){

mainUIController.handleCOMMAND_ID(GameDB.COMMAND_ID_EXIT);

}

}

}

界面显示如图：