Java实现Flappy Bird游戏源码

作者：sqh4587 时间：2022-11-02 16:55:29　

本文实例为大家分享了Java实现Flappy Bird游戏的具体代码，供大家参考，具体内容如下

1.首先在mainActivity.xml中放置一个View，ID为viewDraw

2.开始编程，程序中自定义一个View类的子类，与viewDraw关联，程序除了放置如一个view控件，没有其他控件，程序上面的所有图片都是通过控制canvas画图实现

3.游戏是依据flappybird的游戏过程重新写的算法，功能与原版游戏相似，可能有些地方不足，完全是学习练习编程而已，做的不好见谅

4.原图片大小为384*512，在展示图片时将图片进行了放大，尽可能满足800*1280的全屏展示，如果你使用三星Note10，这个程序可以直接复制粘贴运行，否则，可能会遇到图片画错位置的问题，请适当调整

5.程序游戏中使用到的图片最后，只需要按照图片上的名字命名该图片，并导入到程序的图片资源中，就能顺利运行本程序

代码：

public class MainActivity extends Activity
{
static final int IMG_WIDTH=384; //图片的长宽
static final int IMG_HEIGHT=512;
private View viewDraw;

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewDraw = (View) findViewById(R.id.viewDraw);
MyView v = new MyView(viewDraw.getContext(), null);

setContentView(v);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if (keyCode == KeyEvent.KEYCODE_BACK)
{
finish();
return true;
}
return super.onKeyDown(keyCode, event);
}
//定义水管障碍物类
class Obstacle
{
int x;
int h;
public Obstacle()
{
x=0;
h=0;
}
}
//自定义View子类，完成动画的刷新
class MyView extends View implements Runnable
{
static final int SPEED=2;
// 图形当前坐标
private int x = 20, y = 20,a,b,c,birdHeight,time,point,v,record;
Obstacle pillar[]= new Obstacle[3];

boolean bInit,bCourse,bGame,bGameOver;

RefreshHandler mRedrawHandler;

Bitmap birdUpBitmap,birdDownBitmap,birdMiddleBitmap,groundBitmap,otherStartBitmap;
Bitmap courseUpBitmap,courseDownBitmap,courseMiddleBitmap;
Bitmap pillarUpBitmap,pillarDownBitmap,gameOverBitmap,recordBitmap,playAgainBitmap,listBitmap,goldBitmap,silverBitmap,bronzeBitmap,whiteGoldBitmap,gameBackgroundBitmap;

// 构造方法
public MyView(Context context, AttributeSet attrs)
{
super(context, attrs);
// TODO Auto-generated constructor stub
// 获得焦点
setFocusable(true);
bInit=false;
bCourse=false;
bGame=false;
bGameOver=false;
//障碍物初始化
pillar[0]=new Obstacle();
pillar[1]=new Obstacle();
pillar[2]=new Obstacle();
//载入图片
otherStartBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.other_start);
birdUpBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.bird_up);
birdDownBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.bird_down);
birdMiddleBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.bird_middle);
groundBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.background_ground);
pillarDownBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.pillar_downside);
pillarUpBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.pillar_upside);
gameOverBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.other_gameover);
recordBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.other_record);
playAgainBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.other_restart);
listBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.other_list);
bronzeBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.medals_bronze);
silverBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.medals_silver);
goldBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.medals_gold);
whiteGoldBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.medals_whitegold);
//游戏界面刷新handler
mRedrawHandler = new RefreshHandler();

// 启动线程
new Thread(this).start();
}

@Override
public void run()
{
// TODO Auto-generated method stub

while (true)
{
// 通过发送消息更新界面
Message m = new Message();
m.what = 0x101;
mRedrawHandler.sendMessage(m);
try
{
Thread.sleep(20);
} catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

//游戏画面更新
void gameDraw(Canvas canvas)
{
if(!bInit)
{
Bitmap bm;
bm = BitmapFactory.decodeResource(getResources(), R.drawable.other_load);
canvas.drawBitmap(bm, 0, 0, null);
Paint p1 = new Paint();
p1.setAntiAlias(true);
p1.setColor(Color.WHITE);
p1.setTextSize(20);//设置字体大小
}
else if(bInit)
{
if(!bCourse)
{
a-=SPEED;
if(a<=0)
a=384;

canvas.drawBitmap(otherStartBitmap, 0, 0, null);
canvas.drawBitmap(groundBitmap, a, 448, null);
canvas.drawBitmap(groundBitmap, a-384, 448, null);

b=a％128;
if(b>=0&&b<32)
{
canvas.drawBitmap(birdMiddleBitmap, 175, 220, null);
}
if(b>=32&&b<64)
{
canvas.drawBitmap(birdUpBitmap, 175, 216, null);
}
if(b>=64&&b<96)
{
canvas.drawBitmap(birdMiddleBitmap, 175, 220, null);
}
if(b>=96&&b<=128)
{
canvas.drawBitmap(birdDownBitmap, 175, 224, null);
}
canvas.drawBitmap(groundBitmap, a, 448, null);
}
else if (bCourse)
{
if(!bGame)
{
time += 1;

int temp = time ％ 64;
if (temp >= 0 && temp < 16)
canvas.drawBitmap(courseUpBitmap, 0, 0, null);
if (temp >= 16 && temp < 32)
canvas.drawBitmap(courseMiddleBitmap, 0, 0, null);
if (temp >= 32 && temp < 48)
canvas.drawBitmap(courseDownBitmap, 0, 0, null);
if (temp >= 48 && temp < 64)
canvas.drawBitmap(courseMiddleBitmap, 0, 0, null);
a-=SPEED;
if(a<=0)
a=384;
canvas.drawBitmap(groundBitmap, a, 448, null);
canvas.drawBitmap(groundBitmap, a-384, 448, null);

}
else if(bGame)
{
if(!bGameOver)
{
time+=1;

/***************计算高度************************/
v+=9.8;
if(v>120)
v=120;
else if(v<-150)
v=-150;
if(v>=0)
birdHeight+=((v*5.0)/77);
else if(v<0)
birdHeight+=((v*4.5)/77);
if(birdHeight<0)
birdHeight=0;
else if(birdHeight>415)
birdHeight=415;

/***************柱子的移动**********************/
for(c=0;c<3;c++)
{
pillar[c].x-=SPEED;
if(pillar[c].x<=-70)
pillar[c].x=650;
if(pillar[c].x==512)
{
pillar[c].h=(new Random()).nextInt(200)+200;
}
}

/***************计算分数************************/
for(c=0;c<3;c++)
{
if(pillar[c].x==100)
point++;
}

/****************地面移动***********************/
a-=SPEED;

/****************判断碰撞,+32判断下侧柱子，-170判断上侧柱子***********************/
if(pillar[0].x>=30&&pillar[0].x<=145&&(pillar[0].h<(birdHeight+32)||(pillar[0].h-170)>birdHeight))
bGameOver=true;
if(pillar[1].x>=30&&pillar[1].x<=145&&(pillar[1].h<(birdHeight+32)||(pillar[1].h-170)>birdHeight))
bGameOver=true;
if(pillar[2].x>=30&&pillar[2].x<=145&&(pillar[2].h<(birdHeight+32)||(pillar[2].h-170)>birdHeight))
bGameOver=true;
//是否碰到地面
if(birdHeight>414)
bGameOver=true;
}

/***************显示图像************************/
//显示背景
canvas.drawBitmap(gameBackgroundBitmap, 0, 0, null);

//显示柱子
for(c=0;c<3;c++)
{
canvas.drawBitmap(pillarDownBitmap, pillar[c].x, pillar[c].h, null);
canvas.drawBitmap(pillarUpBitmap, pillar[c].x, pillar[c].h-420, null);
}

if(a<=0)
a=384;
canvas.drawBitmap(groundBitmap, a, 448, null);
canvas.drawBitmap(groundBitmap, a-384, 448, null);

int temp=time％16;
if(temp>=0&&temp<4)
canvas.drawBitmap(birdMiddleBitmap, 100, birdHeight, null);
if(temp>=4&&temp<8)
canvas.drawBitmap(birdUpBitmap, 100, birdHeight, null);
if(temp>=8&&temp<12)
canvas.drawBitmap(birdMiddleBitmap, 100, birdHeight, null);
if(temp>=12&&temp<16)
canvas.drawBitmap(birdDownBitmap, 100, birdHeight, null);

if(!bGameOver)
{
/*******************显示分数**********************/
Paint p1 = new Paint();
p1.setAntiAlias(true);
p1.setColor(Color.WHITE);
p1.setTextSize(20);//设置字体大小
canvas.drawText("score:"+point, 171, 50, p1);
canvas.drawText("acc:"+v, 171, 80, p1);
canvas.drawText("H:"+birdHeight, 171, 110, p1);
}
else if(bGameOver)
{
canvas.drawBitmap(gameOverBitmap, 55, 60, null);
canvas.drawBitmap(recordBitmap, 35, 150, null);
canvas.drawBitmap(playAgainBitmap, 35, 350, null);
canvas.drawBitmap(listBitmap, 200, 350, null);

if(point>=10&&point<20)
canvas.drawBitmap(bronzeBitmap, 67, 200, null);
if(point>=20&&point<30)
canvas.drawBitmap(silverBitmap, 67, 200, null);
if(point>=30&&point<40)
canvas.drawBitmap(goldBitmap, 67, 200, null);
if(point>=40)
canvas.drawBitmap(whiteGoldBitmap, 67, 200, null);

Paint p1 = new Paint();
p1.setAntiAlias(true);
p1.setColor(Color.WHITE);
p1.setTextSize(20);//设置字体大小
canvas.drawText(""+point, 260, 210, p1);
//最高纪录
canvas.drawText("1000", 260, 268, p1);

}
}
}
}

// 实例化画笔
Paint p = new Paint();
p.setColor(Color.BLACK);
p.setColor(Color.WHITE);
canvas.drawText("init: "+bInit+" course: "+bCourse+" game: "+bGame+" over: "+bGameOver, 0, 10, p);
}

@Override
protected void onDraw(Canvas canvas)
{
// TODO Auto-generated method stub
super.onDraw(canvas);
canvas.drawColor(Color.BLACK);
//这里的操作是为了在我的平板电脑竖屏尽量全屏显示，原图片很小，我的屏幕分辨率为1280*800，如果不需要对图片进行缩放，可以在只而立只保留gameDraw（）部分
canvas.save();
canvas.translate(16, 80);
float scale=(float) 2.0;
canvas.scale(scale, scale);
canvas.clipRect(0, 0, IMG_WIDTH, IMG_HEIGHT);
gameDraw(canvas);
canvas.restore();
}

// 更新界面处理器
class RefreshHandler extends Handler
{
@Override
public void handleMessage(Message msg)
{
// TODO Auto-generated method stub
if (msg.what == 0x101)
{
MyView.this.update();
MyView.this.invalidate();
}
super.handleMessage(msg);
}
}

// 更新坐标
private void update()
{
}
//触屏事件
@Override
public boolean onTouchEvent(MotionEvent event)
{
switch (event.getPointerCount())
{
case 1:
return onSingleTouchEvent(event);
case 2:
return onDoubleTouchEvent(event);
default:
return false;
}
}
//单手指触屏处理
private boolean onSingleTouchEvent(MotionEvent event)
{
int x = (int) event.getX();
int y = (int) event.getY();

switch (event.getAction())
{
case MotionEvent.ACTION_UP:
if(!bInit)
{
a=-2;
bInit=true;
}
else if(bInit)
{
if(!bCourse)
{
if((new Random()).nextInt(3)==0)
{
gameBackgroundBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.background_night);
courseDownBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.intro_night_down);
courseUpBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.intro_night_up);
courseMiddleBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.intro_night_middle);
}
else
{
gameBackgroundBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.background_day);
courseDownBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.intro_day_down);
courseUpBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.intro_day_up);
courseMiddleBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.intro_day_middle);
}
time = 0;
a=0;

bCourse=true;
}
else if(bCourse)
{
if(!bGame)
{
time=0;
birdHeight=150;
point=0;
pillar[0].x=700;
pillar[1].x=940;
pillar[2].x=1180;
a=0;
b=0;
c=0;

bGame=true;
}
else if(bGame)
{
if(!bGameOver)
v-=250;
else if(bGameOver)
{
bGameOver=false;
bCourse=false;
bGame=false;
}
}
}
}
break;
case MotionEvent.ACTION_DOWN:

break;
case MotionEvent.ACTION_MOVE:

break;
}
return true;
}
//双指触屏处理
private boolean onDoubleTouchEvent(MotionEvent event)
{
switch (event.getAction() & MotionEvent.ACTION_MASK)
{
case MotionEvent.ACTION_POINTER_UP:

break;
case MotionEvent.ACTION_POINTER_DOWN:
{

break;
}
case MotionEvent.ACTION_MOVE:

postInvalidate();
break;
}
return true;
}
}
}