Android平臺2D游戲簡單實例

fmms 12年前發布 | 31K 次閱讀 Android Android開發移動開發
基于Android平臺開發小游戲的首次嘗試,通過自己設計的簡易android框架,實現的簡單2D壁球游戲。
package com.tabletennis.main;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
public class MySurfaceView extends SurfaceView implements Callback,Runnable {
    private SurfaceHolder sfh;
    private Thread th;
    private Canvas canvas;
    private Paint paint;
    private int ScreenW,ScreenH;
    //ball informationetContentView
    private int moveSpeedX=10;
    private int moveSpeedY=10;
    private int tempSpeedX=moveSpeedX;
    private int tempSpeedY=moveSpeedY;
    private int head_left=21;
    private int head_top=41;
    private int radius=10;//半徑
    private int ball_score=100;
    //Bat information
    private int bat_left=10;
    private int bat_right=10;
    private int bat_width=55;
    private int bat_ply=5;
    private int bat_move_speed=16;
    private int ball_color=Color.WHITE;
    //Process information
    private int refresh_circle_time=50;
    //Game status
    private int score=0;
    private int score_count=0;
    private double time=0.0;
    private boolean show_score=false;
    private int game_status=GameStatus.GAME_READY;
    private int chances=0;
    //Window variabele
    int off_count=1;

private Activity main_activity;
public MySurfaceView(Context context) {
    super(context);
    // TODO Auto-generated constructor stub
    main_activity=(Activity) context;
    sfh = this.getHolder();
    sfh.addCallback(this);
    paint=new Paint();
    paint.setAntiAlias(true);
    paint.setColor(Color.WHITE);
    paint.setTextSize(16);
    this.setKeepScreenOn(true);// 保持屏幕常亮  
    setFocusable(true);
    th=new Thread(this);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    // TODO Auto-generated method stub
    if(game_status==GameStatus.GAME_NEW){
        if(keyCode==KeyEvent.KEYCODE_DPAD_UP){
        game_status=GameStatus.GAME_READY;
        drawReadyWindow();
        }
    }
    if(game_status==GameStatus.GAME_OVER){
        if(keyCode==KeyEvent.KEYCODE_DPAD_UP){
            init_game_data();
            game_status=GameStatus.GAME_READY;
            drawReadyWindow();
        }
    }

    if(game_status==GameStatus.GAME_PAUSED){
        //drawPausedWindow();
        /*
         * 顯示快捷鍵菜單，并提示游戲已經ready
         * */
        if(keyCode==KeyEvent.KEYCODE_DPAD_RIGHT||keyCode==KeyEvent.KEYCODE_DPAD_LEFT||keyCode==KeyEvent.KEYCODE_DPAD_DOWN){
            game_status=GameStatus.GAME_ON;
        }else if(keyCode==KeyEvent.KEYCODE_DPAD_UP){
            init_game_data();
            drawReadyWindow();
            game_status=GameStatus.GAME_READY;
        }
    }

    if(game_status==GameStatus.GAME_READY){
        //drawPausedWindow();
        /*
         * 顯示快捷鍵菜單，并提示游戲已經ready
         */
        if(keyCode==KeyEvent.KEYCODE_DPAD_RIGHT||keyCode==KeyEvent.KEYCODE_DPAD_LEFT){
            game_status=GameStatus.GAME_ON;
        }else if(keyCode==KeyEvent.KEYCODE_DPAD_DOWN){
            game_status=GameStatus.GAME_OFF;

        };
    }


    if(game_status==GameStatus.GAME_ON){
        if(keyCode==KeyEvent.KEYCODE_DPAD_RIGHT){
            if(bat_left+bat_width<ScreenW-5){
                bat_left+=bat_move_speed;
                bat_right=ScreenW-bat_left;
            }
        }else if(keyCode==KeyEvent.KEYCODE_DPAD_LEFT){
            if(bat_left>5){
                bat_left-=bat_move_speed;
                bat_right=ScreenW-bat_left;
            }
        }else if(keyCode==KeyEvent.KEYCODE_DPAD_DOWN){
            game_status=GameStatus.GAME_PAUSED;
        }
    }
    return super.onKeyDown(keyCode, event);
}
private void drawRectFrame(Canvas canvas,Paint paint,int margin_left,int margin_right,int margin_top,int margin_bottom){
    canvas.drawLine(margin_left, margin_top, margin_left,ScreenH-margin_bottom, paint);
    canvas.drawLine(margin_left,margin_top,ScreenW-margin_right,margin_top,paint);
    canvas.drawLine(ScreenW-margin_right,ScreenH-margin_bottom,ScreenW-margin_right,margin_top,paint);
    canvas.drawLine(margin_left,ScreenH-margin_bottom,ScreenW-margin_right,ScreenH-margin_bottom,paint);

}
private void drawGameMonitor(Canvas canvas,Paint paint){
    paint.setColor(Color.WHITE);
    drawRectFrame(canvas,paint,10,10,ScreenH-40,10);
    paint.setTextSize(18);
    canvas.drawText("Time:"+(int)time, 20,ScreenH-20 , paint);
    canvas.drawText("Score:"+score, 110,ScreenH-20 , paint);
    canvas.drawText("Chances: "+chances, 200,ScreenH-20 , paint);
    paint.setTextSize(16);
}
private void drawMainWindow(){
        try{
            canvas=sfh.lockCanvas();
            Paint ball_paint=new Paint();
            ball_paint.setAntiAlias(true);
            ball_paint.setColor(ball_color);

            canvas.drawColor(Color.DKGRAY);     
            canvas.drawLine(0,0,ScreenW/5-20,ScreenH/5-20,ball_paint);
            canvas.drawLine(ScreenW,0,4*ScreenW/5+20,ScreenH/5-20,ball_paint);
            canvas.drawLine(ScreenW/5-20,ScreenH/5-20,4*ScreenW/5+20,ScreenH/5-20,ball_paint);
            canvas.drawLine(ScreenW/5-20,ScreenH/5-20,0,ScreenH,ball_paint);
            canvas.drawLine(ScreenW*4/5+20,ScreenH/5-20,ScreenW,ScreenH,ball_paint);
            canvas.drawCircle(head_left, head_top, radius, ball_paint);
            canvas.drawRect(bat_left,ScreenH-bat_ply-100,bat_left+bat_width,ScreenH-90, paint);

            paint.setColor(Color.RED);
            canvas.drawLine(0, ScreenH-bat_ply-100, ScreenW, ScreenH-bat_ply-100, paint);
            drawGameMonitor(canvas,paint);
            paint.setColor(Color.RED);
            //canvas.drawLine(0, ScreenH-92, ScreenW, ScreenH-92, paint);
            head_left+=moveSpeedX;
            head_top+=moveSpeedY;
            paint.setColor(Color.WHITE);
            if(show_score){
                ball_paint.setTextSize(50);
                canvas.drawText("+"+ball_score, ScreenW/2-50, ScreenH/2, ball_paint);
            }
            //paint.setColor(Color.WHITE);

            if(head_left>=ScreenW-2*radius-20){
                //Right edge
                moveSpeedX*=-1;
                show_score=false;
                head_left=ScreenW-2*radius-20;
            }

            if(head_left<=20){
                //Left edge
                moveSpeedX*=-1;
                show_score=false;
                head_left=20;
            }
            if(head_top<=40){
                //Top edge
                moveSpeedY*=-1;
                randomBallData();
                show_score=false;
                head_top=40;

            }
            if(head_top>=ScreenH-2*radius-100){
                float ball_current_pos=(float)(head_left+radius);

                if(ball_current_pos>=bat_left&&ball_current_pos<=bat_left+bat_width){
                    tempSpeedX=moveSpeedX;
                    tempSpeedY=moveSpeedY;
                    moveSpeedY*=-1;
                    score+=ball_score;
                    show_score=true;
                    score_count=100;
                }else{
                    chances--;
                    if(chances>0){
                        game_status=GameStatus.GAME_CHANCES;
                        head_left=(int)(Math.random()*ScreenW-2*radius-20);
                        head_top=41;
                        if(head_left<=20){
                            head_left=21;
                        }
                        randomBallData();
                    }else
                        game_status=GameStatus.GAME_OVER;
                }   
            }


        }catch(Exception e){
            e.printStackTrace();
        }finally{
            if(canvas!=null){
                sfh.unlockCanvasAndPost(canvas);            
                }
            }
}
private void drawPausedWindow() {
    // TODO Auto-generated method stub
            try{
                canvas=sfh.lockCanvas();
                paint.setColor(Color.WHITE);
                canvas.drawColor(Color.DKGRAY);
                drawRectFrame(canvas,paint,50,50,100,220);
                Paint title_paint=new Paint();
                title_paint.setTextSize(20);
                title_paint.setAntiAlias(true);
                title_paint.setColor(Color.YELLOW);
                canvas.drawText("Game is paused!",78, 160, title_paint);
                canvas.drawText("Press any key to continue", 70, 200, paint);
            }catch(Exception e){
                e.printStackTrace();
            }finally{
                if(canvas!=null){
                    sfh.unlockCanvasAndPost(canvas);            
                    }               
                }
}
private void drawReadyWindow(){
    // TODO Auto-generated method stub
    try{
        canvas=sfh.lockCanvas();
        paint.setColor(Color.WHITE);
        canvas.drawColor(Color.DKGRAY);
        Paint title_paint=new Paint();
        //canvas.drawRect(50, 100, 200, 200, paint);
        drawRectFrame(canvas,paint,10,10,10,10);
        //drawRectFrame(canvas,paint,20,20,20,20);
        canvas.drawText("WELCOME TO PAY MY GAME", 50, 100, paint);
        canvas.drawText("------Copyright by Skyrain-------", 42, 300, paint);
        title_paint.setTextSize(35);
        title_paint.setAntiAlias(true);
        title_paint.setColor(Color.WHITE);

        title_paint.setTypeface(Typeface.SANS_SERIF);
        canvas.drawText("Tennis Game", 55, 250, title_paint);
        Resources res=getResources();
        Bitmap bmp=BitmapFactory.decodeResource(res, R.drawable.icon);
        canvas.drawBitmap(bmp, 120,150, title_paint);
        paint.setTextSize(10);
        canvas.drawText("************************", 80, 350, paint);
        canvas.drawText("*  [Left]or[Right]:  Start/Move", 80, 365, paint);
        canvas.drawText("*", 220, 365, paint);
        canvas.drawText("*  [Down]:            Exit", 80, 380, paint);
        canvas.drawText("*", 220, 380, paint);
        canvas.drawText("************************", 80, 395, paint);
        //Thread.sleep(3000);
        //game_status=GameStatus.GAME_READY;
        paint.setTextSize(16);
    }catch(Exception e){
        e.printStackTrace();
    }finally{
        if(canvas!=null){
            sfh.unlockCanvasAndPost(canvas);        
            }
        }
}
private void drawOffWindow() {
    // TODO Auto-generated method stub
    if(off_count==7){
        main_activity.finish();
    }
    try{
        canvas=sfh.lockCanvas();
        paint.setColor(Color.WHITE);
        canvas.drawColor(Color.DKGRAY);
        drawRectFrame(canvas,paint,50,50,100,250);
        Paint title_paint=new Paint();
        title_paint.setTextSize(20);
        title_paint.setAntiAlias(true);
        title_paint.setColor(Color.RED);
        canvas.drawText("Game is Exiting", 93, 140, title_paint);
        title_paint.setColor(Color.GREEN);
        for(int i=0;i<off_count;i++){
            canvas.drawCircle(80+i*28, 160, 5, title_paint);
        }

        off_count++;
    }catch(Exception e){
        e.printStackTrace();
    }finally{
        if(canvas!=null){
            sfh.unlockCanvasAndPost(canvas);            
            }
        }
}

private void drawOverWindow() {
    // TODO Auto-generated method stub
    try{
        canvas=sfh.lockCanvas();
        paint.setColor(Color.WHITE);
        canvas.drawColor(Color.DKGRAY);
        drawRectFrame(canvas,paint,50,50,100,200);
        Paint title_paint=new Paint();
        title_paint.setTextSize(20);
        title_paint.setAntiAlias(true);
        title_paint.setColor(Color.YELLOW);
        canvas.drawText("Your Total Score", 90, 140, title_paint);
        //canvas.drawText("[YOUR SCORE]: 0000", 100, 150, paint);
        //paint.setColor(Color.RED);
        //canvas.drawText("[score] ", 130, 170, paint);
        title_paint.setTextSize(43);
        title_paint.setColor(Color.RED);
        canvas.drawText(""+score, 120, 195, title_paint);
        paint.setColor(Color.WHITE);
        canvas.drawText("Press [UP] to continue", 80, 230, paint);
    }catch(Exception e){
        e.printStackTrace();
    }finally{
        if(canvas!=null){
            sfh.unlockCanvasAndPost(canvas);            
            }
        }
}

private void drawChancesWindow() {
    // TODO Auto-generated method stub
    try{
        canvas=sfh.lockCanvas();
        paint.setColor(Color.WHITE);
        canvas.drawColor(Color.DKGRAY);
        drawRectFrame(canvas,paint,15,15,120,200);
        Paint title_paint=new Paint();
        title_paint.setTextSize(20);
        title_paint.setAntiAlias(true);
        title_paint.setColor(Color.YELLOW);
        canvas.drawText("You have          chances left!", 35, 210, title_paint);
        title_paint.setTextSize(50);
        title_paint.setColor(Color.RED);
        canvas.drawText(""+chances,130,220,title_paint);
    }catch(Exception e){
        e.printStackTrace();
    }finally{
        if(canvas!=null){
            sfh.unlockCanvasAndPost(canvas);            
            }
        }
}
private void init_game_data() {
    // TODO Auto-generated method stub
    head_left=(int)(Math.random()*ScreenW-2*radius-20);
    head_top=41;
    if(head_left<=20){
        head_left=21;
    }
    randomBallData();
    bat_left=ScreenW/2;
    score=0;
    chances=3;
}

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    // TODO Auto-generated method stub
    return super.onKeyUp(keyCode, event);
}
public void draw() throws InterruptedException{

    if(game_status==GameStatus.GAME_ON){
        drawMainWindow();
    }else if(game_status==GameStatus.GAME_OVER){
                drawOverWindow();
    }else if(game_status==GameStatus.GAME_PAUSED){
        drawPausedWindow();
    }else if(game_status==GameStatus.GAME_OFF){
        drawOffWindow();
        try {
            Thread.sleep(500);
            //main_activity.finish();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }else if(game_status==GameStatus.GAME_CHANCES){
        drawChancesWindow();
        Thread.sleep(2000);
        game_status=GameStatus.GAME_ON;
    }

}



@Override
public void run() {
    // TODO Auto-generated method stub
    while(true){
        time+=0.1;
        try{
            draw();
            Thread.sleep(refresh_circle_time);
            //Thread.sleep(100000);
        }catch(InterruptedException e){
                e.printStackTrace();
            }
        }
}
private void randomBallData(){

    int x=moveSpeedX/Math.abs(moveSpeedX);
    int y=moveSpeedY/Math.abs(moveSpeedY);
    ball_score=(int)(Math.random()*100);
    if(ball_score==0){
        ball_score=100;
    }
    if(ball_score<30){
        ball_color=Color.LTGRAY;
        moveSpeedX=12;
        moveSpeedY=12;
    }else if(ball_score>=30&&ball_score<50){
        ball_color=Color.WHITE;
        moveSpeedX=14;
        moveSpeedY=14;
    }else if(ball_score>=50&&ball_score<70){
        ball_color=Color.YELLOW;
        moveSpeedX=16;
        moveSpeedY=16;
    }else if(ball_score>=70&&ball_score<90){
        ball_color=Color.BLUE;
        moveSpeedX=18;
        moveSpeedY=18;
    }else if(ball_score>=90&&ball_score<=100){
        ball_color=Color.RED;
        moveSpeedX=20;
        moveSpeedY=20;
    }
    moveSpeedX*=x;
    moveSpeedY*=y;

}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
        int height) {
    // TODO Auto-generated method stub
}

@Override
public void surfaceCreated(SurfaceHolder holder) {
    // TODO Auto-generated method stub
    init_game_data();
    ScreenW=this.getWidth();
    ScreenH=this.getHeight();
    head_left=21;
    head_top=41;
    bat_left=21;
    bat_right=ScreenW-bat_left;
    drawReadyWindow();
    th.start();
}

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
    // TODO Auto-generated method stub

}


}</pre>
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Android Android開發移動開發
Android平臺2D游戲簡單實例

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