Android SurfaceView实现人物动画
Android SurfaceView实现人物动画
经常看到别人的游戏中有人物跑动的效果,对这个东西很好奇,刚好群里上传了“忍者突袭”的代码,我看了里面的代码,但对画人物那段还是没咋弄,所以自己写一个测试程序,程序中使用到的图片资源是来自“忍者突袭”的代码,真心的感谢写“忍者突袭”代码的人~~
人物角色使用的图片如下:
在画人物角色时会对这张图片进行剪切,使用的函数是
mCanvas.clipRect(mClipRect);绘制人物角色的思想是使用mCanvas.clipRect(mClipRect);函数来设置画布显示的位置及大小,假设为(presentX,presentY,presentX + width/10, presentY + height)(presentX和presentY为现在图片的位置,width和height为图片的宽度和高度),然后使用mCanvas.drawBitmap来绘制图片,第一次绘制图片的位置是(presentX,presentY),然后将绘制图片的位置修改为(presentX - width / 10, presentY),第二次设置的画布显示的位置仍然是presentX,presentY,presentX + width/10, presentY + height,绘制图片的位置是(presentX - width / 10, presentY),而第二张图片的位置刚好是presentX,presentY,所以显示的是第二张图片,依次类推的实现其它图片的显示。
实例代码如下:
- package com.example.runmanenvironmenttest;
- import Android.content.Context;
- 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.util.AttributeSet;
- import android.view.SurfaceHolder;
- import android.view.SurfaceView;
- public class MyView extends SurfaceView implements SurfaceHolder.Callback, Runnable{
- private SurfaceHolder holder;
- private Canvas mCanvas;
- private Bitmap mBg1;
- private Bitmap mPlay1;
- private int mWidth;
- private int mHeight;
- private Paint mPaint;
- private String tag = "xiao";
- private BitmapFactory.Options ops;
- private Rect mRect;
- private Rect mClipRect;
- private int mPosition = 20;
- private int mPicPosition = 0;
- private int mStep = 5;
- private int mBamHeight = 600;
- public MyView(Context context, AttributeSet attrs) {
- super(context, attrs);
- // TODO Auto-generated constructor stub
- holder = this.getHolder();
- holder.addCallback(this);
- mPaint = new Paint();
- mPaint.setColor(Color.YELLOW);
- ops = new BitmapFactory.Options();
- mBg1 = BitmapFactory.decodeResource(this.getResources(),
- R.drawable.bg1, ops);
- mPlay1 = BitmapFactory.decodeResource(getResources(), R.drawable.dartman, ops);
- }
- @Override
- public void surfaceChanged(SurfaceHolder holder, int format, int width,
- int height) {
- // TODO Auto-generated method stub
- mWidth = width;
- mHeight = height;
- mRect = new Rect(0, 0, mWidth, mHeight);
- new Thread(this).start();
- }
- @Override
- public void surfaceCreated(SurfaceHolder holder) {
- // TODO Auto-generated method stub
- }
- @Override
- public void surfaceDestroyed(SurfaceHolder holder) {
- // TODO Auto-generated method stub
- }
- @Override
- public void run() {
- // TODO Auto-generated method stub
- //myDraw();
- while(true){
- try {
- mClipRect = new Rect(mPosition * mStep + mPlay1.getWidth() / 10, mBamHeight,mPosition * mStep + 2 * mPlay1.getWidth() / 10, mBamHeight - mPlay1.getHeight());
- mCanvas = holder.lockCanvas();
- if (mCanvas != null) {
- mCanvas.drawBitmap(mBg1, null,mRect, mPaint);
- mCanvas.save();
- mCanvas.clipRect(mClipRect);
- mCanvas.drawBitmap(mPlay1, mPlay1.getWidth() / 10 + mPosition * mStep - mPicPosition * mPlay1.getWidth() / 10, mBamHeight - mPlay1.getHeight(), mPaint);
- mCanvas.restore();
- mPicPosition++;
- if(mPosition * mStep > mWidth){
- mPosition = 0;
- }
- if(mPicPosition > 9){
- mPicPosition = 0;
- }
- }
- } catch (Exception e) {
- e.printStackTrace();
- } finally {
- if (mCanvas != null) {
- holder.unlockCanvasAndPost(mCanvas);
- }
- }
- try {
- Thread.sleep(1000);
- } catch (InterruptedException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- }
- }
- }
源代码下载地址:
免费下载地址在 http://linux.bkjia.com/
用户名与密码都是www.bkjia.com
具体下载目录在 /2012年资料/9月/13日/Android SurfaceView实现人物动画
评论暂时关闭