仿一个小鸟过柱子的游戏

来源：互联网发布：全景三维漫游软件编辑：程序博客网时间：2024/04/30 09:55

学习时做个一个小游戏，界面有些简陋，部分碰撞计算不是很精准。

话不多说直接上代码了，比较简单

package com.example.administrator.bluebird;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Paint;import android.util.AttributeSet;import android.util.TypedValue;import android.view.MotionEvent;import android.view.SurfaceHolder;import android.view.SurfaceView;import java.util.ArrayList;import java.util.List;import java.util.Random;/** * Created by Administrator on 2017/6/6. */public class GameBackGround extends SurfaceView implements SurfaceHolder.Callback, Runnable {    private boolean isDrawing;    private Paint pillarPaint;    /**     * surface持有者     */    private SurfaceHolder mHolder;    /**     * 当前画布     */    private Canvas mCanvas;    /**     * x轴的单位     */    private int mXUnit = dp2px(100);    /**     * 柱子宽度     */    private int pillarWidth = dp2px(30);    /**     * 柱子空隙高度     */    private int spaceHeight = dp2px(60);    /**     * 画布宽度     */    private int BG_width;    /**     * 画布高度     */    private int BG_height;    /**     * 柱子集合     */    private List<Integer> mPillars;    /**     * 柱子偏移量     */    private int mOffset;    /**     * 主角偏移量     */    private int birdOffset;    /**     * 主角每次跳高的高度     */    private int jump = dp2px(30);    /**     * 游戏主角     */    private Bitmap bird;    /**     * 主角尺寸     */    private int bird_width;    private int bird_height;    private int DEFAULT_WIDTH = 300;    private int DEFAULT_HEIGHT = 200;    public GameBackGround(Context context) {        this(context, null);    }    public GameBackGround(Context context, AttributeSet attrs) {        this(context, attrs, 0);    }    public GameBackGround(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        init();    }    /**     * 初始化     */    private void init() {        mHolder = getHolder();        mHolder.addCallback(this);        // 设置可以获取焦点        setFocusable(true);        // 进入触摸输入模式后,该控件是否还有获得焦点的能力        setFocusableInTouchMode(true);        // 是否保持屏幕常亮        this.setKeepScreenOn(true);        //初始化几根柱子        mPillars = new ArrayList<>();        mPillars.add(new Random().nextInt(200) + 100);        mPillars.add(new Random().nextInt(200) + 100);        mPillars.add(new Random().nextInt(200) + 100);        mPillars.add(new Random().nextInt(200) + 100);        mPillars.add(new Random().nextInt(200) + 100);        //初始化画笔        pillarPaint = new Paint();        pillarPaint.setAntiAlias(true);        pillarPaint.setStrokeWidth(pillarWidth);        //初始化主角图片        bird = BitmapFactory.decodeResource(getContext().getResources(), R.mipmap.ic_launcher);        bird_width = bird.getWidth();        bird_height = bird.getHeight();    }    /**     * 计算画布大小     *     * @param widthMeasureSpec     * @param heightMeasureSpec     */    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int widthMode = MeasureSpec.getMode(widthMeasureSpec);        int widthSize = MeasureSpec.getSize(widthMeasureSpec);        int heightMode = MeasureSpec.getMode(heightMeasureSpec);        int heightSize = MeasureSpec.getSize(heightMeasureSpec);        if (widthMode == MeasureSpec.AT_MOST) {            BG_width = dp2px(DEFAULT_WIDTH);        } else {            BG_width = Math.max(widthSize, dp2px(DEFAULT_WIDTH));        }        if (heightMode == MeasureSpec.AT_MOST) {            BG_height = dp2px(DEFAULT_HEIGHT);        } else {            BG_height = Math.max(heightSize, dp2px(DEFAULT_HEIGHT));        }        setMeasuredDimension(BG_width, BG_height);    }    @Override    public void surfaceCreated(SurfaceHolder holder) {        // 开始绘画        isDrawing = true;        // 启动绘画线程        new Thread(this).start();    }    @Override    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {    }    @Override    public void surfaceDestroyed(SurfaceHolder holder) {        isDrawing = false;    }    @Override    public void run() {        while (isDrawing) {            try {                draw();                Thread.sleep(10);                birdOffset++;                mOffset++;                if (mOffset == BG_width + mXUnit) {                    mOffset = BG_width;                    mPillars.remove(0);                    mPillars.add(new Random().nextInt(100) + 100);                }            } catch (InterruptedException e) {                e.printStackTrace();            }        }    }    /**     * 绘制方法     */    private void draw() {        // 获取并锁定画布        mCanvas = mHolder.lockCanvas();        if (mCanvas != null) {            // 设置画布背景为白色            mCanvas.drawColor(0xffffffff);            //绘制移动的柱子            drawPillar();            //绘制游戏主角            drawBird();            // 保证每次都将绘制的内容提交到服务器            mHolder.unlockCanvasAndPost(mCanvas);        }    }    /**     * 画柱子     */    private void drawPillar() {        mCanvas.save();        for (int i = 0; i < mPillars.size(); i++) {            crashEvent(BG_width + mXUnit * i - mOffset, BG_width + mXUnit * i - mOffset, BG_height - dp2px(mPillars.get(i)));            mCanvas.drawLine(BG_width + mXUnit * i - mOffset, BG_height - dp2px(mPillars.get(i)), BG_width + mXUnit * i - mOffset, BG_height, pillarPaint);            mCanvas.drawLine(BG_width + mXUnit * i - mOffset, 0, BG_width + mXUnit * i - mOffset, BG_height - dp2px(mPillars.get(i)) - spaceHeight, pillarPaint);        }    }    /**     * 绘制鸟     */    private void drawBird() {        mCanvas.save();        mCanvas.drawBitmap(bird, BG_width / 2, BG_height / 2 + birdOffset, pillarPaint);    }    /**     * 碰撞处理     */    private void crashEvent(int x, int y_up, int y_down) {        //此时碰撞发生        if (x <= BG_width / 2 + bird_width && x >= BG_width / 2 - pillarWidth) {            if (BG_height / 2 + birdOffset < y_up || BG_height / 2 + bird_height + birdOffset > y_down) {                isDrawing = false;            }        }        if (birdOffset == BG_height / 2) {            isDrawing = false;        }    }    @Override    public boolean onTouchEvent(MotionEvent event) {        switch (event.getAction()) {            //点击事件            case MotionEvent.ACTION_DOWN:                if (birdOffset > -BG_height / 2) {                    birdOffset -= jump;                }                break;        }        return true;    }    /**     * dp转化为px工具     */    private int dp2px(int dp) {        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,                getContext().getResources().getDisplayMetrics());    }}

MainActivity只设置了一个屏幕禁止横屏

package com.example.administrator.bluebird;import android.content.pm.ActivityInfo;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //禁止横屏        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);        setContentView(R.layout.activity_main);    }}

布局文件activity_main.xml直接使用自定义的view

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent">    <com.example.administrator.bluebird.GameBackGround        android:layout_width="match_parent"        android:layout_height="match_parent" /></RelativeLayout>

好了，其他业务处理可以发挥脑洞了。

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