我正在尝试使用 Andengine + Box2D 开发游戏。一切都很完美，但是当我尝试使用 Physics World 时，它崩溃了。如果我不使用它，一切都是完美的。我正在谈论的行是：
physicsWorld = new PhysicsWorld(new Vector2(SensorManager.GRAVITY_EARTH,0),false);
方法中的那个onLoadScene()。（对不起，我无法突出显示它）另外，日志中没有错误。我也在代码下添加了我的日志。
这是我的代码：
package com.emredavarci.updatesistemi;
import org.anddev.andengine.engine.Engine;
import org.anddev.andengine.engine.camera.Camera;
import org.anddev.andengine.engine.handler.IUpdateHandler;
import org.anddev.andengine.engine.options.EngineOptions;
import org.anddev.andengine.engine.options.EngineOptions.ScreenOrientation;
import org.anddev.andengine.engine.options.resolutionpolicy.FillResolutionPolicy;
import org.anddev.andengine.entity.scene.Scene;
import org.anddev.andengine.entity.scene.Scene.IOnSceneTouchListener;
import org.anddev.andengine.entity.sprite.AnimatedSprite;
import org.anddev.andengine.entity.sprite.Sprite;
import org.anddev.andengine.entity.util.FPSLogger;
import org.anddev.andengine.extension.input.touch.controller.MultiTouch;
import org.anddev.andengine.extension.input.touch.controller.MultiTouchController;
import org.anddev.andengine.extension.input.touch.controller.MultiTouchException;
import org.anddev.andengine.extension.physics.box2d.PhysicsConnector;
import org.anddev.andengine.extension.physics.box2d.PhysicsFactory;
import org.anddev.andengine.extension.physics.box2d.PhysicsWorld;
import org.anddev.andengine.input.touch.TouchEvent;
import org.anddev.andengine.opengl.texture.Texture;
import org.anddev.andengine.opengl.texture.TextureOptions;
import org.anddev.andengine.opengl.texture.region.TextureRegion;
import org.anddev.andengine.opengl.texture.region.TextureRegionFactory;
import org.anddev.andengine.opengl.texture.region.TiledTextureRegion;
import org.anddev.andengine.ui.activity.BaseGameActivity;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.physics.box2d.BodyDef.BodyType;
import com.badlogic.gdx.physics.box2d.FixtureDef;
import android.hardware.SensorManager;
import android.view.Menu;
import android.widget.Toast;
public class MainActivity extends BaseGameActivity {
private Engine engine;
private Camera camera;
private Scene sahne;
private static final int CAMERA_HEIGHT = 480;
private static final int CAMERA_WIDTH = 800;
private Texture texSaha,texOyuncu1,texOyuncu2;
private TextureRegion texRegSaha,texRegOyuncu1,texRegOyuncu2;
private Sprite spriteSaha,spriteOyuncu1,spriteOyuncu2;
private Texture texAnime;
private TiledTextureRegion tiledTexReg;
private AnimatedSprite animSprite;
private PhysicsWorld physicsWorld;
private final FixtureDef fixDef = PhysicsFactory.createFixtureDef(0.5f, 0.5f, 0.5f);
private Body bodyOyuncu1;
private Body bodyOyuncu2;
public Engine onLoadEngine() {
camera = new Camera(0,0,CAMERA_WIDTH,CAMERA_HEIGHT);
final EngineOptions engineOptions = new EngineOptions(true,ScreenOrientation.LANDSCAPE, new FillResolutionPolicy(),camera);
engineOptions.getTouchOptions().setRunOnUpdateThread(true); // dokunmatik ekranı ayrı bir thread ile kontrol ediyoruz
engine = new Engine(engineOptions);
return this.engine;
}
public void onLoadResources() {
texSaha = new Texture(1024,512,TextureOptions.BILINEAR_PREMULTIPLYALPHA);
this.mEngine.getTextureManager().loadTexture(this.texSaha);
texRegSaha = TextureRegionFactory.createFromAsset(this.texSaha, this, "gfx/arkaplan3.png",0,0);
texOyuncu1 = new Texture(128,128,TextureOptions.BILINEAR_PREMULTIPLYALPHA);
texOyuncu2 = new Texture(128,128,TextureOptions.BILINEAR_PREMULTIPLYALPHA);
Texture textures[] = { texSaha,texOyuncu1,texOyuncu2 };
this.mEngine.getTextureManager().loadTextures(textures);
texRegOyuncu1 = TextureRegionFactory.createFromAsset(this.texOyuncu1, this , "gfx/blue.png",0,0);
texRegOyuncu2 = TextureRegionFactory.createFromAsset(this.texOyuncu2, this , "gfx/yellow.png",0,0);
}
private float parmakKoordinatiX = 0;
private float parmakKoordinatiY = 0;
private boolean maviHareketEder = false;
public Scene onLoadScene() {
this.sahne = new Scene();
physicsWorld = new PhysicsWorld(new Vector2(SensorManager.GRAVITY_EARTH,0),false);
this.engine.registerUpdateHandler(new FPSLogger());
spriteSaha= new Sprite(0,0,texRegSaha);
spriteOyuncu1 = new Sprite(600,CAMERA_HEIGHT/2 - 64, texRegOyuncu1);
spriteOyuncu2 = new Sprite(50,CAMERA_HEIGHT/2 - 64, texRegOyuncu2);
bodyOyuncu1 = PhysicsFactory.createCircleBody(physicsWorld, spriteOyuncu1, BodyType.DynamicBody, fixDef);
this.physicsWorld.registerPhysicsConnector(new PhysicsConnector(spriteOyuncu1, bodyOyuncu1,true,true,true,true));
bodyOyuncu2 = PhysicsFactory.createCircleBody(physicsWorld, spriteOyuncu2, BodyType.DynamicBody, fixDef);
this.physicsWorld.registerPhysicsConnector(new PhysicsConnector(spriteOyuncu2, bodyOyuncu2,true,true,true,true));
bodyOyuncu1.setLinearVelocity(new Vector2(-10,0));
bodyOyuncu2.setLinearVelocity(new Vector2(10,0));
this.sahne.attachChild(spriteSaha);
this.sahne.attachChild(spriteOyuncu1);
this.sahne.attachChild(spriteOyuncu2);
this.sahne.registerTouchArea(spriteOyuncu1);
this.sahne.registerTouchArea(spriteOyuncu2);
this.sahne.registerUpdateHandler(physicsWorld);
return this.sahne;
}
public void onLoadComplete() {
// TODO Auto-generated method stub
}
}
这是我的日志：
02-02 08:28:37.527: I/dalvikvm(861): Could not find method org.anddev.andengine.entity.shape.Shape.getVelocityX, referenced from method org.anddev.andengine.extension.physics.box2d.PhysicsFactory.createBoxBody
02-02 08:28:37.567: W/dalvikvm(861): VFY: unable to resolve virtual method 5858: Lorg/anddev/andengine/entity/shape/Shape;.getVelocityX ()F
02-02 08:28:37.567: D/dalvikvm(861): VFY: replacing opcode 0x6e at 0x001f
02-02 08:28:37.567: D/dalvikvm(861): VFY: dead code 0x0022-0061 in Lorg/anddev/andengine/extension/physics/box2d/PhysicsFactory;.createBoxBody (Lorg/anddev/andengine/extension/physics/box2d/PhysicsWorld;Lorg/anddev/andengine/entity/sh ape/Shape;Lcom/badlogic/gdx/physics/box2d/BodyDef$BodyType;Lcom/badlogic/gdx/physics/box2d/ FixtureDef;F)Lcom/badlogic/gdx/physics/box2d/Body;
02-02 08:28:37.567: I/dalvikvm(861): Could not find method org.anddev.andengine.entity.shape.Shape.getVelocityX, referenced from method org.anddev.andengine.extension.physics.box2d.PhysicsFactory.createCircleBody
02-02 08:28:37.567: W/dalvikvm(861): VFY: unable to resolve virtual method 5858: Lorg/anddev/andengine/entity/shape/Shape;.getVelocityX ()F
02-02 08:28:37.567: D/dalvikvm(861): VFY: replacing opcode 0x6e at 0x0027
02-02 08:28:37.567: D/dalvikvm(861): VFY: dead code 0x002a-0055 in Lorg/anddev/andengine/extension/physics/box2d/PhysicsFactory;.createCircleBody (Lorg/anddev/andengine/extension/physics/box2d/PhysicsWorld;Lorg/anddev/andengine/entity/sh ape/Shape;Lcom/badlogic/gdx/physics/box2d/BodyDef$BodyType;Lcom/badlogic/gdx/physics/box2d/ FixtureDef;F)Lcom/badlogic/gdx/physics/box2d/Body;
02-02 08:28:37.587: I/dalvikvm(861): Could not find method org.anddev.andengine.entity.shape.Shape.getVelocityX, referenced from method org.anddev.andengine.extension.physics.box2d.PhysicsFactory.createPolygonBody
02-02 08:28:37.628: W/dalvikvm(861): VFY: unable to resolve virtual method 5858: Lorg/anddev/andengine/entity/shape/Shape;.getVelocityX ()F
02-02 08:28:37.628: D/dalvikvm(861): VFY: replacing opcode 0x6e at 0x001d
02-02 08:28:37.628: D/dalvikvm(861): VFY: dead code 0x0020-0042 in Lorg/anddev/andengine/extension/physics/box2d/PhysicsFactory;.createPolygonBody (Lorg/anddev/andengine/extension/physics/box2d/PhysicsWorld;Lorg/anddev/andengine/entity/shape/Shape; [Lcom/badlogic/gdx/math/Vector2;Lcom/badlogic/gdx/physics/box2d/BodyDef$BodyType;Lcom/badlogic/gdx/ph ysics/box2d/FixtureDef;F)Lcom/badlogic/gdx/physics/box2d/Body;
02-02 08:28:37.937: D/AndEngine(861): UpdateThread interrupted. Don't worry - this Exception is most likely expected!
02-02 08:28:37.937: D/AndEngine(861): java.lang.InterruptedException
02-02 08:28:37.937: D/AndEngine(861): at java.lang.Object.wait(Native Method)
02-02 08:28:37.937: D/AndEngine(861): at java.lang.Object.wait(Object.java:358)
02-02 08:28:37.937: D/AndEngine(861): at org.anddev.andengine.engine.Engine$State.waitUntilCanUpdate(Engine.java:712)
02-02 08:28:37.937: D/AndEngine(861): at org.anddev.andengine.engine.Engine.yieldDraw(Engine.java:462)
02-02 08:28:37.937: D/AndEngine(861): at org.anddev.andengine.engine.Engine.onTickUpdate(Engine.java:453)
02-02 08:28:37.937: D/AndEngine(861): at org.anddev.andengine.engine.Engine$UpdateThread.run(Engine.java:675)
02-02 08:28:38.187: D/dalvikvm(861): Trying to load lib /data/data/com.emredavarci.updatesistemi/lib/libandenginephysicsbox2dextension.so 0x405130b0
02-02 08:28:38.187: D/dalvikvm(861): Added shared lib /data/data/com.emredavarci.updatesistemi/lib/libandenginephysicsbox2dextension.so 0x405130b0
02-02 08:28:38.187: D/dalvikvm(861): No JNI_OnLoad found in /data/data/com.emredavarci.updatesistemi/lib/libandenginephysicsbox2dextension.so 0x405130b0, skipping init
02-02 08:28:38.187: D/dalvikvm(861): GetMethodID: method not found: Lcom/badlogic/gdx/physics/box2d/World;.preSolve:(JJ)V
02-02 08:28:38.187: W/dalvikvm(861): JNI WARNING: JNI method called with exception raised
02-02 08:28:38.187: W/dalvikvm(861): in Lcom/badlogic/gdx/physics/box2d/World;.newWorld (FFZ)J (GetMethodID)
02-02 08:28:38.187: W/dalvikvm(861): Pending exception is:
02-02 08:28:38.187: I/dalvikvm(861): Ljava/lang/NoSuchMethodError;: preSolve
02-02 08:28:38.197: I/dalvikvm(861): at com.badlogic.gdx.physics.box2d.World.newWorld(Native Method)
02-02 08:28:38.197: I/dalvikvm(861): at com.badlogic.gdx.physics.box2d.World.<init> (World.java:78)
02-02 08:28:38.197: I/dalvikvm(861): at org.anddev.andengine.extension.physics.box2d.PhysicsWorld.<init>(PhysicsWorld.java:56)
02-02 08:28:38.197: I/dalvikvm(861): at org.anddev.andengine.extension.physics.box2d.PhysicsWorld.<init>(PhysicsWorld.java:52)
02-02 08:28:38.197: I/dalvikvm(861): at com.emredavarci.updatesistemi.MainActivity.onLoadScene(MainActivity.java:110)
02-02 08:28:38.197: I/dalvikvm(861): at org.anddev.andengine.ui.activity.BaseGameActivity.doResume(BaseGameActivity.java:158)
02-02 08:28:38.197: I/dalvikvm(861): at org.anddev.andengine.ui.activity.BaseGameActivity.onWindowFocusChanged(BaseGameActivity.java:82)
02-02 08:28:38.197: I/dalvikvm(861): at com.android.internal.policy.impl.PhoneWindow$DecorView.onWindowFocusChanged(PhoneWindow.java:2001)
02-02 08:28:38.197: I/dalvikvm(861): at android.view.View.dispatchWindowFocusChanged(View.java:3924)
02-02 08:28:38.197: I/dalvikvm(861): at android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:659)
02-02 08:28:38.197: I/dalvikvm(861): at android.view.ViewRoot.handleMessage(ViewRoot.java:1968)
02-02 08:28:38.197: I/dalvikvm(861): at android.os.Handler.dispatchMessage(Handler.java:99)
02-02 08:28:38.197: I/dalvikvm(861): at android.os.Looper.loop(Looper.java:123)
02-02 08:28:38.197: I/dalvikvm(861): at android.app.ActivityThread.main(ActivityThread.java:3683)
02-02 08:28:38.197: I/dalvikvm(861): at java.lang.reflect.Method.invokeNative(Native Method)
02-02 08:28:38.197: I/dalvikvm(861): at java.lang.reflect.Method.invoke(Method.java:507)
02-02 08:28:38.197: I/dalvikvm(861): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-02 08:28:38.197: I/dalvikvm(861): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-02 08:28:38.197: I/dalvikvm(861): at dalvik.system.NativeStart.main(Native Method)
02-02 08:28:38.197: I/dalvikvm(861): "main" prio=5 tid=1 NATIVE
02-02 08:28:38.197: I/dalvikvm(861): | group="main" sCount=0 dsCount=0 obj=0x4001f1a8 self=0xce48
02-02 08:28:38.197: I/dalvikvm(861): | sysTid=861 nice=0 sched=0/0 cgrp=default handle=-1345006528
02-02 08:28:38.197: I/dalvikvm(861): | schedstat=( 186996176 565732645 123 )
02-02 08:28:38.197: I/dalvikvm(861): at com.badlogic.gdx.physics.box2d.World.newWorld(Native Method)
02-02 08:28:38.197: I/dalvikvm(861): at com.badlogic.gdx.physics.box2d.World.<init>(World.java:78)
02-02 08:28:38.207: I/dalvikvm(861): at org.anddev.andengine.extension.physics.box2d.PhysicsWorld.<init>(PhysicsWorld.java:56)
02-02 08:28:38.207: I/dalvikvm(861): at org.anddev.andengine.extension.physics.box2d.PhysicsWorld.<init>(PhysicsWorld.java:52)
02-02 08:28:38.207: I/dalvikvm(861): at com.emredavarci.updatesistemi.MainActivity.onLoadScene(MainActivity.java:110)
02-02 08:28:38.207: I/dalvikvm(861): at org.anddev.andengine.ui.activity.BaseGameActivity.doResume(BaseGameActivity.java:158)
02-02 08:28:38.207: I/dalvikvm(861): at org.anddev.andengine.ui.activity.BaseGameActivity.onWindowFocusChanged(BaseGameActivity.java:82)
02-02 08:28:38.207: I/dalvikvm(861): at com.android.internal.policy.impl.PhoneWindow$DecorView.onWindowFocusChanged(PhoneWindow.java:2001)
02-02 08:28:38.207: I/dalvikvm(861): at android.view.View.dispatchWindowFocusChanged(View.java:3924)
02-02 08:28:38.207: I/dalvikvm(861): at android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:659)
02-02 08:28:38.207: I/dalvikvm(861): at android.view.ViewRoot.handleMessage(ViewRoot.java:1968)
02-02 08:28:38.207: I/dalvikvm(861): at android.os.Handler.dispatchMessage(Handler.java:99)
02-02 08:28:38.207: I/dalvikvm(861): at android.os.Looper.loop(Looper.java:123)
02-02 08:28:38.207: I/dalvikvm(861): at android.app.ActivityThread.main(ActivityThread.java:3683)
02-02 08:28:38.207: I/dalvikvm(861): at java.lang.reflect.Method.invokeNative(Native Method)
02-02 08:28:38.207: I/dalvikvm(861): at java.lang.reflect.Method.invoke(Method.java:507)
02-02 08:28:38.207: I/dalvikvm(861): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-02 08:28:38.207: I/dalvikvm(861): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-02 08:28:38.207: I/dalvikvm(861): at dalvik.system.NativeStart.main(Native Method)
02-02 08:28:38.207: E/dalvikvm(861): VM aborting
这段代码有什么问题？
编辑：我尝试不使用 .jar 文件，而是安装了 Git 插件（GLES2），但这一次，每个方法的名称都变了。我的意思是我以前知道 onLoadResources()，但现在 Eclipse 想要我 onCreateResources() 方法. 那是什么？面向对象