gamecanvas.java

英语背单词联网版本

/*
 * GameCanvas.java
 *
 * Created on 2003年11月18日, 上午9:19
 */

package handenglish;

import javax.microedition.lcdui.*;
import java.io.*;
/**
 * 
 * @author  com
 * @version
 */
public class GameCanvas extends Canvas implements Runnable,KeyRepeator{
    public final int WIDTH=128;
    public final int HEIGHT=128;
    public final int WHITE=0xffffff;
    public final int BLACK=00000000;
    public final int YELLOW = 0xffff00;
    public final int SLEEPTIME=300;//200
    public final int CHANGETIME=80;//80
    public final int STEP=5;
    public final int BALLOONNUM=8;
    public final int RIGHTTIME=3;
    private Words words;
    private Balloons balloons;
    private Thread moveThread;
    private Image ground,back,firer;
    private boolean isMove,isFire,isGame;
    private int locx,locy;
    private char key;
    private int moveTime,createTime,blastNum,k;
    private int[] m;
    private KeyRepeat m_KeyRepeat;
    private Midlet midlet;
    private boolean helpView;
    //private Sound sound1,sound2,sound3;
    /**
     * paint
     */
    public GameCanvas(Midlet midlet,int nowUnitType,int nowUnitId){
    	setFullScreenMode( true );
        try{
            ground=Image.createImage("/handenglish/images/ground.png");
            back=Image.createImage("/handenglish/images/back.png");
            firer=Image.createImage("/handenglish/images/fire.png");
        }catch( Exception e ){}
        words=new Words(midlet,nowUnitType,nowUnitId);
        balloons=new Balloons(this);
        m=new int[BALLOONNUM];
        init();
       // sound1=new Sound(initSound("hurt.ott",17),1);
       // sound2=new Sound(initSound("win.ott",21),1);
       // sound3=new Sound(initSound("fail.ott",18),1);
        moveThread=new Thread(this);
        m_KeyRepeat = new KeyRepeat(this);
        m_KeyRepeat.start();
        this.midlet=midlet;
    }
    private byte[] initSound(String s, int i) {
        byte abyte0[] = new byte[i];
        try {
            InputStream inputstream = this.getClass().getResourceAsStream(s);
            DataInputStream db=new DataInputStream(inputstream);
            db.read(abyte0);
            System.out.println(abyte0);
            db.close();
        }
        catch(Exception e){e.printStackTrace();}
        return abyte0;
    }
    private void init(){
        isGame=true;
        isMove=true;
        isFire=false;
        helpView=false;
        words.rightNum=0;
        blastNum=0;
        moveTime=0;
        createTime=0;
        locx=55;
        locy=55;
        for(int i=0;i<BALLOONNUM;i++)
            m[i]=0;
    }
    private void nextGame(){
        init();
    }
    /**
     *是否爆炸过
     */
    public boolean isBlast(int i){
        if(m[i]>3)
            return true;
        else
            return false;
    }
    public void startThread(){
        moveThread.start();
    }
    public void stopThread(){
        if(moveThread!=null)
            moveThread=null;
        m_KeyRepeat.cancel();
    }
    
    public void paint(Graphics g) {
        if(words.getSize()>0){
            if(isGame){
                g.setClip(0,0,WIDTH,HEIGHT);
                g.setColor(WHITE);
                g.fillRect(0,0,WIDTH,HEIGHT);
                g.setClip(0,0,WIDTH,HEIGHT);
                g.drawImage(back,3,3,g.TOP|g.LEFT);
                balloons.draw(g,m);
                g.setClip(3,3,122,17);
                g.setColor(0);
                g.fillRect(3,3,122,17);
                g.setClip(0,0,WIDTH,HEIGHT);
                g.drawImage(ground,0,0,g.TOP|g.LEFT);
                if(isMove){
                    words.draw(g);
                }
                else if(isFire){
                    if(key!=0){
                        m[k]=blastNum;
                        blastNum++;
                        if(blastNum>=5){
                            blastNum=0;
                            moveTime=0;
                            createTime=0;
                            isMove=true;
                            isFire=false;
                        }
                    }
                    else{
                        moveTime=0;
                        createTime=0;
                        isMove=true;
                        isFire=false;
                    }
                }
                g.setClip(0,0,WIDTH,HEIGHT);
                g.drawImage(firer,locx,locy,g.TOP|g.LEFT);
                g.setColor(WHITE);
            }
            else{
                isMove=false;
                g.setClip(0,0,WIDTH,HEIGHT);
                g.setColor(BLACK);
                g.fillRect(0,0,WIDTH,HEIGHT);
                g.setClip(0,0,WIDTH,HEIGHT);
                g.setFont(Font.getFont(Font.FACE_SYSTEM,Font.STYLE_PLAIN,Font.SIZE_SMALL));
                g.setColor(YELLOW);
                g.drawString("你答对了"+words.rightNum+"题",10,20,g.TOP|g.LEFT);
                g.drawString("按左软键重新开始",10,50,g.TOP|g.LEFT);
                g.drawString("按右软键返回菜单",10,80,g.TOP|g.LEFT);
                g.setColor(WHITE);
                g.drawString("返回",100,110,Graphics.LEFT|Graphics.TOP);
                g.drawString("重新",2,110,Graphics.LEFT|Graphics.TOP);
            /*if(words.isfinish){
                g.drawString("重新",100,110,Graphics.LEFT|Graphics.TOP);
            }
            else
                g.drawString("继续",100,110,Graphics.LEFT|Graphics.TOP);*/
                //stopMoveThread();
            }
            if(helpView){
                g.setColor(255,255,255);
                g.fillRoundRect(2,15,124,85,2,2);
                g.setColor(51,0,0);
                g.drawRect(3,16,121,82);
                g.drawString("上下左右键移动瞄准器",5,20,g.LEFT|g.TOP);
                g.drawString("提机键开枪",5,40,g.LEFT|g.TOP);
                g.drawString("右软键返回菜单",5,60,g.LEFT|g.TOP);
                g.drawString("任意键返回游戏",5,80,g.LEFT|g.TOP);
            }
        }
        else{
            g.setClip(0,0,WIDTH,HEIGHT);
            g.setColor(BLACK);
            g.fillRect(0,0,WIDTH,HEIGHT);
            g.setClip(0,0,WIDTH,HEIGHT);
            g.setFont(Font.getFont(Font.FACE_SYSTEM,Font.STYLE_PLAIN,Font.SIZE_SMALL));
            g.setColor(YELLOW);
            g.drawString("当前词集暂无单词...",64,64,g.HCENTER|g.TOP);
            g.drawString("返回",100,110,Graphics.LEFT|Graphics.TOP);
        }
    }
    
    private void fire(){
        if(isMove){
            key=balloons.isHit(locx,locy);
            k=balloons.hitNum;
            if(key!=0&&words.judge(key)){//击中并且答案虐正确
                words.rightNum++;
              //  sound2.play(1);
            }
            else if(key!=0){
               // sound3.play(1);
            }
            else{
               // sound1.play(1);
            }
            isMove=false;
            isFire=true;
        }
    }
    /**
     *气球移动
     */
    public void move(){
        for(int i=0;i<BALLOONNUM;i++){
            if(!balloons.move(i)){
                if(createTime%RIGHTTIME==1){
                    balloons.balloonLetter[i]=words.justLetter;
                }
                else{
                    m[i]=0;
                    balloons.balloonLetter[i]=balloons.getLetter();
                }
                createTime++;
            }
        }
    }
    
    public void run(){
        Thread current = Thread.currentThread();
        while(moveThread == current){
            System.gc();
            try{
                moveThread.sleep(SLEEPTIME);
                if(!helpView){
                    if(isMove){
                        move();
                        if(moveTime%CHANGETIME==0){
                            isGame=words.changeWord();
                            createTime=0;
                        }
                        moveTime++;
                    }
                }
                
                repaint();
                serviceRepaints();
                
            }catch(Exception e){
                // e.printStackTrace();
            }
        }
    }
    /**
     * Called when a key is pressed.
     */
    protected  void keyPressed(int keyCode){
        int gameAction=getGameAction(keyCode);
        if(words.getSize()==0){
            if(keyCode==-7){
                stopThread();
                midlet.nowDisplay(this,midlet.WIN_SELUNIT);
            }
        }
        else{
            if(isMove){
                if(helpView){
                    helpView=false;
                    repaint();
                }
                else{
                    if(keyCode==-7){
                        stopThread();
                        midlet.nowDisplay(this,midlet.WIN_SELUNIT);
                    }
                    else if(gameAction==FIRE){
                        //sound1.play(1);
                        fire();
                        repaint();
                    }
                    else if(keyCode==KEY_NUM0){
                        helpView=true;
                        repaint();
                    }
                    else if ( m_KeyRepeat != null )
                        m_KeyRepeat.startRepeat(gameAction);
                }
            }
            else if(!isGame){
                if(keyCode==-7){
                    stopThread();
                    midlet.nowDisplay(this,midlet.WIN_SELUNIT);
                }
                else if(keyCode==-1){
                    words.isfinish=false;
                    nextGame();
                    repaint();
                }
            }
        }
    }
    public void movePressed(int gameAction){
        switch(gameAction){
            case UP:
                if(locy-STEP>=20)
                    locy=locy-STEP;
                break;
            case DOWN:
                if(locy+STEP<=100)
                    locy=locy+STEP;
                break;
            case LEFT:
                if(locx-STEP>=0)
                    locx=locx-STEP;
                break;
            case RIGHT:
                if(locx+STEP<=WIDTH)
                    locx=locx+STEP;
                break;
        }
        repaint();
    }
    
    /**
     * Called when a key is released.
     */
    protected  void keyReleased(int keyCode) {
        m_KeyRepeat.stopRepeat( getGameAction( keyCode ) );
    }
    
}