Android: How to use a day to write "aircraft war" this game! (No frame-surfaceview drawing)

Preface
As an Android developer, I often want to develop a small game to entertain you, today, how I write a simple "aircraft war".

Body Test Address: Http://www.wandoujia.com/apps/edu.njupt.zhb.planegame

Source:Https://github.com/nuptboyzhb/newplanegame

Game analysis

As you know, the main "characters" in aircraft wars are:
1. Player aircraft
2. Enemy aircraft
3. Bullets sent by player aircraft
4. Bullets sent by enemy boss aircraft
What we need to control are :
1. Draw the characters in the screen
2. Control the logic of the role. For example, a collision between an enemy aircraft and our aircraft, a collision between a bullet from our aircraft and an enemy aircraft, an enemy boss plane firing a bullet and a direct collision with our plane, and so on.
Resources:
To complete a game, but also to have the load of resources. such as airplanes, bullets and other pictures, such as loading, sound loading.
Drawing of the game background
In fact, it is a picture that can be connected to one another. Also is the "scroll", the principle is carmack scroll algorithm principle.
The following analysis code area :

In fact, throw away the Android platform, no matter what platform, to do such a game. All need these logic. For Android platforms. Let's take a look at the drawing frame of the Surfaceview.

Direct Sticker Code:

Package edu.njupt.zhb.game.view;/** * * @author Zheng Haibo * @webset: Http://www.mobctrl.net * @android Development Alliance QQ Group: 272209595 */public class Planeview extends Surfaceview implements Callback, Runnable {private Surfaceholder surfaceholder;private L Ong Sleep_time = 16;//Draw period private int screenheight;private int screenwidth;private Thread thread;private Canvas CANVAS;PR Ivate Paint paint;private gamescreen currentscreen;private int level = 0;private int backgroundspeed = 1;public PlaneView ( Context context) {super (context); System.out.println ("Debug:planeview ()"); Surfaceholder = This.getholder (); Surfaceholder.addcallback (this); Surfaceholder.setformat (pixelformat.translucent);p aint = new paint ();p Aint.setantialias (True);p Aint.setdither ( true);} @Overridepublic void surfacecreated (Surfaceholder holder) {System.out.println ("debug:surfacecreated"); Setzorderontop (false); isgameover = False;if (ispause) {return;} ScreenHeight = This.getheight (); screenwidth = This.getwidth (); Initplane (); thread = new Thread(this); Thread.Start ();} @Overridepublic void Surfacechanged (surfaceholder holder, int format, int width,int height) {System.out.println ("debug: Surfacechanged ");} @Overridepublic void surfacedestroyed (Surfaceholder holder) {System.out.println ("debug:surfacedestroyed"); if (lift > 0) {planeviewcallback.ongamepause ();} Ispause = true;} @Overridepublic void Run () {while (!isgameover) {//controls the drawing period if (Ispause) {try {thread.sleep (sleep_time);} catch ( Interruptedexception e) {//TODO auto-generated catch Blocke.printstacktrace ();} Continue;} Long starttime = System.currenttimemillis ();d rawscreen (), Long time = System.currenttimemillis ()-Starttime;if (Time < Sleep_time) {try {thread.sleep (sleep_time-time);} catch (Interruptedexception e) {e.printstacktrace ();}}}} /** * plot scene */private void Drawscreen () {canvas = Surfaceholder.lockcanvas (); if (null = = Canvas) {return;} Clear Canvas.drawcolor (Color.White, PorterDuff.Mode.CLEAR);p Aint.setalpha (255); Gamelogic (); Gamedraw (); if (null! = Canvas) {SurfaceholdEr.unlockcanvasandpost (canvas);}} /** * game logic */private void Gamelogic () {//to do control game logic ...} private void Gamedraw () {//First draw game background drawbackground (Backgroundspeed * frameseq); if (Currentscreen = = Gamescreen.normal) { Synchronized (planes) {drawplanes ();d rawbullets ();d rawmasterplane ();}} else if (Currentscreen = = Gamescreen.boss) {drawbullets ();d rawbossplane ();d rawbossbullets ();d rawmasterplane ();}} private void Drawbossplane () {if (null! = Bossplane) {if (bossplane.isclicked ()) {//Draw blast Imgbossplane.onblastdraw (c Anvas, Paint), if (Bossplane.isblastframeend ()) {bossplane.setclicked (false);}} Bossplane.ondraw (canvas, Paint);}} @Overrideprotected void OnDraw (canvas canvas) {//TODO auto-generated method Stubsuper.ondraw (canvas); System.out.println ("Debug:ondraw");} @Overrideprotected void Ondetachedfromwindow () {Super.ondetachedfromwindow (); System.out.println ("Debug:ondetachedfromwindow ..."); ispause = False;isgameover = true;//release resource for (Planeres plane: Planesres) {Plane.getbitmap (). Recycle ();} For (Bulletres bulletres:bulletsres) {bulletres.getbitmap (). Recycle ();}} /*** user Interaction */@Overridepublic Boolean ontouchevent (motionevent e) {int x = (int) e.getx (), int y = (int) e.gety (), switch (e.ge Taction ()) {Case MotionEvent.ACTION_DOWN:if (masterplane.iscontainpoint (x, y)) {ismove = true;} Break;case MotionEvent.ACTION_MOVE:if (Ismove) {synchronized (Masterplane) {masterplane.updateposition (x, y);// Controls the movement of the player aircraft}}break;case MotionEvent.ACTION_UP:isMove = false;break;} return true;}}

The drawing for the background. The fact is that the loop draws a picture: the drawing logic of this game:

private void Drawbackground (int yoffset) {yoffset%= screenheight;if (Yoffset = = 0) {canvas.drawbitmap (backgroundbmp, 0, 0 , paint);} else {Canvas.drawbitmap (backgroundbmp, New rect (0,screenheight-yoffset, ScreenWidth, ScreenHeight), new rect (0, 0, ScreenWidth, Yoffset + 1), paint); Canvas.drawbitmap (Backgroundbmp, New Rect (0, 0, screenwidth,screenheight-yoffset), NE W Rect (0, Yoffset, screenwidth,screenheight), paint);}}

Then we just need to add the Planeview to a layout and we can:

Such as:

Planeview = new Planeview (this);p the Laneview.setplaneviewcallback (this);p laneview.setgameovercallback (this); Planeview.ismediaopen = This.ismediaopen; Layoutparams LP = new Layoutparams (layoutparams.match_parent,layoutparams.match_parent); Rl_plane.addView (PlaneView , LP);

Not to be continued.

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Android: How to use a day to write "aircraft war" this game! (No frame-surfaceview drawing)