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Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

Android层IT知识打飞机android

笛里谁知壮士心，沙头空照征人骨。这篇文章主要讲述Android_(游戏)打飞机05：处理子弹，击中敌机，添加计分板相关的知识，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
 
 
 
处理子弹，击中敌机，添加计分板效果
 

Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

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Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

文章图片
Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

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.Color; 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; import java.util.Random; /** * 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 ArrayList< GameImage> gameImage = new ArrayList(); private ArrayList< Zidan> zidans = new ArrayList< Zidan> (); 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)); gameImage.add(new DijiImage(diren,baozha)); }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 Zidan implements GameImage{Bitmap zidan; private FeijiImage feiji; private int x; private int y; public Zidan(FeijiImage feiji,Bitmap zidan){ this.feiji=feiji; this.zidan=zidan; x=(feiji.getX()+feiji.getWidth()/2)-25; //居中位置 y=feiji.getY()-zidan.getHeight(); }public Bitmap getBitmap() { y-=19; if(y< =-10){ zidans.remove(this); } return zidan; }@Override public int getX() { return x; }@Override public int getY() { return y; } }private class DijiImage implements GameImage{private Bitmap diren = null; private List< Bitmap> bitmaps = new ArrayList< Bitmap> (); private List< Bitmap> baozhas = new ArrayList< Bitmap> (); private int x; private int y; private int width; private int height; public DijiImage(Bitmap diren,Bitmap baozha){ this.diren=diren; bitmaps.add(Bitmap.createBitmap(diren,0,0,diren.getWidth()/4,diren.getHeight())); bitmaps.add(Bitmap.createBitmap(diren,(diren.getWidth()/4)*1,0,diren.getWidth()/4,diren.getHeight())); bitmaps.add(Bitmap.createBitmap(diren,(diren.getWidth()/4)*2,0,diren.getWidth()/4,diren.getHeight())); bitmaps.add(Bitmap.createBitmap(diren,(diren.getWidth()/4)*3,0,diren.getWidth()/4,diren.getHeight())); baozhas.add(Bitmap.createBitmap(baozha,0,0,baozha.getWidth()/4,baozha.getHeight()/2)); baozhas.add(Bitmap.createBitmap(baozha,(baozha.getWidth()/4)*1,0,baozha.getWidth()/4,baozha.getHeight()/2)); baozhas.add(Bitmap.createBitmap(baozha,(baozha.getWidth()/4)*2,0,baozha.getWidth()/4,baozha.getHeight()/2)); baozhas.add(Bitmap.createBitmap(baozha,(baozha.getWidth()/4)*3,0,baozha.getWidth()/4,baozha.getHeight()/2)); baozhas.add(Bitmap.createBitmap(baozha,0,baozha.getHeight()/2, baozha.getWidth()/4,baozha.getHeight()/2)); baozhas.add(Bitmap.createBitmap(baozha,(baozha.getWidth()/4)*1,baozha.getHeight()/2, baozha.getWidth()/4,baozha.getHeight()/2)); baozhas.add(Bitmap.createBitmap(baozha,(baozha.getWidth()/4)*2,baozha.getHeight()/2, baozha.getWidth()/4,baozha.getHeight()/2)); baozhas.add(Bitmap.createBitmap(baozha,(baozha.getWidth()/4)*3,baozha.getHeight()/2, baozha.getWidth()/4,baozha.getHeight()/2)); width=diren.getWidth()/4; height=diren.getHeight(); y=-diren.getHeight(); Random ran = new Random(); x=ran.nextInt(display_w-(diren.getWidth()/4)); }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 == 7){ index++; //当爆炸动画运行一次时候删除爆炸效果 if(index==8 & & state){ gameImage.remove(this); }if(index == bitmaps.size()){ index=0; } num=0; } y+=dijiyidong; num++; if(y> display_h){ gameImage.remove(this); }return bitmap; }//判断敌机是否被击中 private boolean state=false; //受到攻击 public void shoudaogongji(ArrayList< Zidan> zidans){if(!state){ for(GameImage zidan:(List< GameImage> )zidans.clone()){if(zidan.getX()> x& & zidan.getY()> y & & zidan.getX()< x+width & & zidan.getY()< y+height){ //子弹击中敌机了 zidans.remove(zidan); state=true; bitmaps=baozhas; fenshu+=10; break; } } } }@Override public int getX() { return x; }@Override public int getY() { return y; }}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 == 7){ 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; private long fenshu=0; private int guanka=1; private int chudishu=50; //出敌机的数字 private int dijiyidong=5; //敌机的移动 private int xiayiguan=50; //下一关分数private int[][] sj={ {1,50,50,4}, {2,100,45,4}, {3,150,40,5}, {4,200,35,5}, {5,300,30,6}, {6,400,30,6}, {7,500,25,7}, {8,650,25,7}, {9,900,20,8}, {10,1200,20,9}}; private boolean stopState=false; public void stop(){ stopState=true; }public void start(){ stopState=false; thread.interrupt(); //叫醒线程 }//绘画中心 public void run() { Paint p1 = new Paint(); int diren_num=0; // int zidan_num=0; //绘画分数的笔 Paint p2=new Paint(); p2.setColor(Color.WHITE); p2.setTextSize(30); p2.setDither(true); p2.setAntiAlias(true); try{ while(state){ while(stopState){ try{ Thread.sleep(1000000); }catch(Exception e){ } } if(selectfeiji!=null){ if(zidan_num==10){ zidans.add(new Zidan(selectfeiji,zidan)); zidan_num=0; } zidan_num++; }Canvas newCanvas = new Canvas(erjihuancun); for(GameImage image:(List< GameImage> )gameImage.clone()){ if(image instanceof DijiImage){ //把子弹告诉敌机 ((DijiImage)image).shoudaogongji(zidans); } newCanvas.drawBitmap(image.getBitmap(),image.getX(),image.getY(),p1); }for(GameImage image:(List< GameImage> )zidans.clone()){ newCanvas.drawBitmap(image.getBitmap(),image.getX(),image.getY(),p1); }//分数 newCanvas.drawText("分数："+fenshu,0,30,p2); newCanvas.drawText("关卡："+guanka,0,60,p2); newCanvas.drawText("下一关："+xiayiguan,0,90,p2); //升级关卡 if(sj[guanka-1][1]< =fenshu){chudishu=sj[guanka][2]; //出敌机的数字 dijiyidong=sj[guanka][3]; fenshu=sj[guanka-1][1]-fenshu; xiayiguan=sj[guanka][1]; guanka=sj[guanka][0]; }if(diren_num==150){ diren_num=0; gameImage.add(new DijiImage(diren,baozha)); } diren_num++; 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; thread=new Thread(this); thread.start(); }Threadthread=null; }

dafeijiGameView.java 
Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

文章图片
Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

文章图片
package com.example.administrator.myapplication; import android.content.DialogInterface; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.KeyEvent; public class MainActivity extends AppCompatActivity implements DialogInterface.OnClickListener{dafeijiGameView view= null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //去掉标题 // requestWindowFeature(Window.FEATURE_NO_TITLE); dafeijiGameView view =new dafeijiGameView(this); view = new dafeijiGameView(this); setContentView(view); }@Override public boolean onKeyDown(int keyCode, KeyEvent event) {if(keyCode==KeyEvent.KEYCODE_BACK){ view.stop(); AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle("确定是否退出"); alert.setNeutralButton("退出",this); alert.setNegativeButton("继续",this); alert.create().show(); return false; }return super.onKeyDown(keyCode, event); }@Override public void onClick(DialogInterface dialog, int which) { if(which==-2){ view.start(); ; }else{ android.os.Process.killProcess(android.os.Process.myPid()); } } }

MainActivity.java 
 
实现过程
 
 
处理子弹
 
当子弹击中敌机时，移除当前子弹
 
把子弹告诉敌机
for(GameImage image:(List< GameImage> )gameImage.clone()){ if(image instanceof DijiImage){((DijiImage)image).shoudaogongji(zidans); } newCanvas.drawBitmap(image.getBitmap(),image.getX(),image.getY(),p1); }

 
当子弹击中敌机时，移除当前子弹
在制作过程中发现判断子弹击中敌机时，如果不移除子弹。会在子弹进入敌机身体的时候，继续判断子弹击中敌机(造成一颗子弹击中三次敌机)
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; } }

 
 
public void shoudaogongji(ArrayList< Zidan> zidans){for(GameImage zidan:(List< GameImage> )zidans.clone()){if(zidan.getX()> x& & zidan.getY()> y & & zidan.getX()< x+width & & zidan.getY()< y+height){ //子弹击中敌机了 zidans.remove(zidan); break; }}}

 
 
Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

文章图片

【Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）】 
Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

文章图片
Android_(游戏)打飞机05（处理子弹，击中敌机，添加计分板）

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; import java.util.Random; /** * 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 ArrayList< GameImage> gameImage = new ArrayList(); private ArrayList< Zidan> zidans = new ArrayList< Zidan> (); 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)); gameImage.add(new DijiImage(diren)); }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(); publi

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