小吃店重力 Android

小吃店重力 Android 是一款基于 Android 平台开发的轻量级小游戏应用，玩家需要操作游戏中的主人公角色躲避一个个掉落的小吃，同时还需要收集金币获得更高的积分。该游戏具有简单易上手的操作模式和有趣的游戏玩法，适合各个年龄段的玩家进行休闲娱乐。以下是更详细的介绍：

游戏特点

• 简单易上手的操作方式
• 有趣的游戏玩法，游戏中的所有元素都与小吃有关
• 随着游戏难度的增加，掉落的小吃数量和速度都会逐渐增加
• 通过收集金币可以购买道具和升级主人公角色的属性
• 拥有精美的游戏界面和流畅的游戏体验

游戏界面

开发技术

小吃店重力 Android 是使用 Java 语言开发的 Android 应用。开发过程中使用了一些常见的 Android 开发技术，包括：

• Android Studio IDE
• Java 编程语言
• Android SDK 和 API
• XML 布局
• SQLite 数据库
• 线程和消息队列
• 游戏引擎 Cocos2d-x

程序代码

以下是游戏主界面的 Java 代码片段：

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class GameView extends SurfaceView implements SurfaceHolder.Callback {

    private Bitmap backgroundBitmap;
    private Bitmap boyBitmap;
    private Bitmap coinBitmap;
    private Bitmap foodBitmap;
    private SurfaceHolder holder;
    private GameLoopThread gameLoopThread;
    private int boyX = 0;
    private int boyY = 0;
    private int boySpeedX = 5;
    private int boySpeedY = 5;
    private int coinX = 0;
    private int coinY = 0;
    private int foodX = 0;
    private int foodY = 0;

    public GameView(Context context) {
        super(context);
        holder = getHolder();
        holder.addCallback(this);
        gameLoopThread = new GameLoopThread(this);
        setFocusable(true);
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        backgroundBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.background);
        boyBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.boy);
        coinBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.coin);
        foodBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.food);
        gameLoopThread.setRunning(true);
        gameLoopThread.start();
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        boolean retry = true;
        gameLoopThread.setRunning(false);
        while (retry) {
            try {
                gameLoopThread.join();
                retry = false;
            } catch (InterruptedException e) {

            }
        }
    }

    public void draw(Canvas canvas) {
        super.draw(canvas);
        if (canvas != null) {
            canvas.drawBitmap(backgroundBitmap, 0, 0, null);
            canvas.drawBitmap(boyBitmap, boyX, boyY, null);
            canvas.drawBitmap(coinBitmap, coinX, coinY, null);
            canvas.drawBitmap(foodBitmap, foodX, foodY, null);
        }
    }

    public void update() {
        if (boyX < 0 || boyX + boyBitmap.getWidth() > getWidth()) {
            boySpeedX = -boySpeedX;
        }
        boyX += boySpeedX;
        if (boyY < 0 || boyY + boyBitmap.getHeight() > getHeight()) {
            boySpeedY = -boySpeedY;
        }
        boyY += boySpeedY;
    }

    public void setCoin() {
        coinX = (int) (Math.random() * getWidth());
        coinY = (int) (Math.random() * getHeight());
    }

    public void setFood() {
        foodX = (int) (Math.random() * getWidth());
        foodY = (int) (Math.random() * getHeight());
    }

    public boolean catchCoin() {
        if (boyX <= coinX && coinX <= boyX + boyBitmap.getWidth()
                && boyY <= coinY && coinY <= boyY + boyBitmap.getHeight()) {
            return true;
        }
        return false;
    }

    public boolean catchFood() {
        if (boyX <= foodX && foodX <= boyX + boyBitmap.getWidth()
                && boyY <= foodY && foodY <= boyY + boyBitmap.getHeight()) {
            return true;
        }
        return false;
    }

}

结语

小吃店重力 Android 是一个轻量级的小游戏应用，具有简单易上手的操作方式和有趣的游戏玩法。无论是在空闲时间还是短暂的工作间隙，都可以通过这个应用进行休闲娱乐，放松身心。