Android_(游戏)打飞机03（控制玩家飞机） _Android

一箫一剑平生意，负尽狂名十五年。这篇文章主要讲述Android_(游戏)打飞机03：控制玩家飞机相关的知识，希望能为你提供帮助。

(游戏)打飞机01：前言传送门
(游戏)打飞机02：游戏背景滚动传送门
(游戏)打飞机03：控制玩家飞机传送门
(游戏)打飞机04：绘画敌机、添加子弹传送门
(游戏)打飞机05：处理子弹，击中敌机，添加计分板传送门
(游戏)打飞机06：后续传送门

控制玩家飞机效果

文章图片

package com.example.administrator.myapplication; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Rect; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.WindowManager; import java.util.ArrayList; import java.util.List; /** * Created by Administrator on 2018/8/9. */public class dafeijiGameView extends SurfaceView implements SurfaceHolder.Callback,Runnable,android.view.View.OnTouchListener{private Bitmap my; //自己 private Bitmap baozha; //爆炸 private Bitmap bg; //背景 private Bitmap diren; //敌人 private Bitmap zidan; //子弹 private Bitmap erjihuancun; //二级缓存 private WindowManager windowManager; //获得界面长宽高 private int display_w; //界面的宽 private int display_h; //界面的高 private List< GameImage> gameImage = new ArrayList(); public dafeijiGameView(Context context) { super(context); getHolder().addCallback(this); //事件注册 this.setOnTouchListener(this); }private void init(){ //加载照片 my= BitmapFactory.decodeResource(getResources(),R.drawable.my); baozha= BitmapFactory.decodeResource(getResources(),R.drawable.baozha); bg= BitmapFactory.decodeResource(getResources(),R.drawable.bg); diren= BitmapFactory.decodeResource(getResources(),R.drawable.diren); zidan= BitmapFactory.decodeResource(getResources(),R.drawable.zidan); erjihuancun=Bitmap.createBitmap(display_w,display_h, Bitmap.Config.ARGB_8888); gameImage.add(new BeijingImage(bg)); //先加入背景照片 gameImage.add(new FeijiImage(my)); }FeijiImage selectfeiji; @Override public boolean onTouch(View v, MotionEvent event) { //手接近屏幕产生的事件 if(event.getAction()==MotionEvent.ACTION_DOWN){ for(GameImage game: gameImage){ if(game instanceof FeijiImage){FeijiImage feiji = (FeijiImage)game; //判断条件为真时选中飞机 if(feiji.getX()< event.getX()& & feiji.getY()< event.getY()& & feiji.getX()+feiji.getWidth()> event.getX() & & feiji.getY()+feiji.getHeigth()> event.getY()){ selectfeiji=feiji; }else{ selectfeiji=null; } break; } } }else if(event.getAction()==MotionEvent.ACTION_MOVE){ //移动鼠标 if( selectfeiji!=null){ selectfeiji.setX((int)event.getX()-selectfeiji.getWidth()/2); selectfeiji.setY((int)event.getY()-selectfeiji.getHeigth()/2); }}else if(event.getAction()==MotionEvent.ACTION_UP){ //松开鼠标 selectfeiji=null; }return true; }private interface GameImage{ public Bitmap getBitmap(); public int getX(); public int getY(); }private class FeijiImage implements GameImage{private Bitmap my; private int x; private int y; private int width; private int heigth; private int getWidth(){ return width; }private int getHeigth(){ return heigth; }private List< Bitmap> bitmaps = new ArrayList< Bitmap> (); privateFeijiImage(Bitmap my){ this.my=my; bitmaps.add(Bitmap.createBitmap(my,0,0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4),0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4)*2,0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4)*3,0,my.getWidth()/4,my.getHeight())); //得到战机的高和宽 width=my.getWidth()/4; heigth=my.getHeight(); x=(display_w - my.getWidth()/4)/2; y=display_h-my.getHeight()-30; }private int index=0; private int num =0; @Override public Bitmap getBitmap() { Bitmap bitmap = bitmaps.get(index); //控制切换四个飞机的频率 if(num == 10){ index++; if(index == bitmaps.size()){ index=0; } num=0; } num++; return bitmap; }@Override public int getX() { return x; }@Override public int getY() { return y; }public void setY(int y){ this.y=y; }public void setX(int x){ this.x=x; }}//负责背景照片的处理 private class BeijingImage implements GameImage{ private Bitmap bg; private BeijingImage(Bitmap bg){ this.bg=bg; newBitmap = Bitmap.createBitmap(display_w,display_h, Bitmap.Config.ARGB_8888); }private Bitmap newBitmap = null; private int height = 0; public Bitmap getBitmap(){ Paint p = new Paint(); Canvas canvas = new Canvas(newBitmap); canvas.drawBitmap(bg, new Rect(0,0,bg.getWidth(),bg.getHeight()), new Rect(0,height,display_w,display_h+height),p); canvas.drawBitmap(bg, new Rect(0,0,bg.getWidth(),bg.getHeight()), new Rect(0,-display_h+height,display_w,height),p); height++; if(height==display_h){ height=0; } return newBitmap; }public int getX(){ return 0; }public int getY(){ return 0; } }private boolean state = false; private SurfaceHolder holder; //绘画中心 public void run() { Paint p1 = new Paint(); try{ while(true){ Canvas newCanvas = new Canvas(erjihuancun); for(GameImage image:gameImage){ newCanvas.drawBitmap(image.getBitmap(),image.getX(),image.getY(),p1); }Canvas canvas = holder.lockCanvas(); canvas.drawBitmap(erjihuancun,0,0,p1); holder.unlockCanvasAndPost(canvas); Thread.sleep(10); } }catch(Exception e){ } }@Override public void surfaceCreated(SurfaceHolder holder) { }@Override public void surfaceDestroyed(SurfaceHolder holder) { state = false; }@Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { //得到屏幕的宽和高 display_w=width; display_h=height; init(); this.holder=holder; state = true; new Thread(this).start(); }}

dafeijiGameView.java

文章图片

package com.example.administrator.myapplication; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; public class MainActivity extends AppCompatActivity{@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //去掉标题 // requestWindowFeature(Window.FEATURE_NO_TITLE); dafeijiGameView view =new dafeijiGameView(this); setContentView(view); }}

MainActivity.java

实现过程

飞机类

文章图片

private class FeijiImage implements GameImage{private Bitmap my; private int x; private int y; private int width; private int heigth; private int getWidth(){ return width; }private int getHeigth(){ return heigth; }private List< Bitmap> bitmaps = new ArrayList< Bitmap> (); privateFeijiImage(Bitmap my){ this.my=my; bitmaps.add(Bitmap.createBitmap(my,0,0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4),0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4)*2,0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4)*3,0,my.getWidth()/4,my.getHeight())); //得到战机的高和宽 width=my.getWidth()/4; heigth=my.getHeight(); x=(display_w - my.getWidth()/4)/2; y=display_h-my.getHeight()-30; }private int index=0; private int num =0; @Override public Bitmap getBitmap() { Bitmap bitmap = bitmaps.get(index); //控制切换四个飞机的频率 if(num == 10){ index++; if(index == bitmaps.size()){ index=0; } num=0; } num++; return bitmap; }@Override public int getX() { return x; }@Override public int getY() { return y; }public void setY(int y){ this.y=y; }public void setX(int x){ this.x=x; }}

FeijiImage.class

文章图片

绘制飞机动画

private List< Bitmap> bitmaps = new ArrayList< Bitmap> ();

将四张图片加入链表中

privateFeijiImage(Bitmap my){ this.my=my; bitmaps.add(Bitmap.createBitmap(my,0,0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4),0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4)*2,0,my.getWidth()/4,my.getHeight())); bitmaps.add(Bitmap.createBitmap(my,(my.getWidth()/4)*3,0,my.getWidth()/4,my.getHeight())); //得到战机的高和宽 width=my.getWidth()/4; heigth=my.getHeight(); x=(display_w - my.getWidth()/4)/2; y=display_h-my.getHeight()-30; }

public static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height, Matrix m, boolean filter)
从原始位图剪切图像，这是一种高级的方式。可以用Matrix(矩阵)来实现旋转等高级方式截图
参数说明：传送门
Bitmap source：要从中截图的原始位图
int x:起始x坐标
int y：起始y坐标
int width：要截的图的宽度
int height：要截的图的宽度
Bitmap.Config config：一个枚举类型的配置，可以定义截到的新位图的质量
返回值：返回一个剪切好的Bitmap 【Android_(游戏)打飞机03（控制玩家飞机）】

文章图片

绘制飞机飞行动画(不断切换四张图片，看起来像飞机飞)

private int index=0;
private int num =0;

public Bitmap getBitmap() { Bitmap bitmap = bitmaps.get(index); //控制切换四个飞机的频率 if(num == 10){ index++; if(index == bitmaps.size()){ index=0; } num=0; } num++; return bitmap; }

为了不冲突背景移动和飞机飞行速度，飞机图片切换慢背景图片移动的十倍

文章图片

在游戏事件中注册飞机跟随自己手指移动事件

public dafeijiGameView(Context context) { super(context); getHolder().addCallback(this); //事件注册 this.setOnTouchListener(this); }

实现飞机跟随自己手指移动

FeijiImage selectfeiji; @Override public boolean onTouch(View v, MotionEvent event) { //手接近屏幕产生的事件 if(event.getAction()==MotionEvent.ACTION_DOWN){ for(GameImage game: gameImage){ if(game instanceof FeijiImage){FeijiImage feiji = (FeijiImage)game; //判断条件为真时选中飞机 if(feiji.getX()< event.getX()& & feiji.getY()< event.getY()& & feiji.getX()+feiji.getWidth()> event.getX() & & feiji.getY()+feiji.getHeigth()> event.getY()){ selectfeiji=feiji; }else{ selectfeiji=null; } break; } } }else if(event.getAction()==MotionEvent.ACTION_MOVE){ //移动鼠标 if( selectfeiji!=null){ selectfeiji.setX((int)event.getX()-selectfeiji.getWidth()/2); selectfeiji.setY((int)event.getY()-selectfeiji.getHeigth()/2); }}else if(event.getAction()==MotionEvent.ACTION_UP){ //松开鼠标 selectfeiji=null; }return true; }