Question

嗨，现在我正在创建一个示例游戏...但它表示错误...现在我发布了我的错误请告诉我如何清除此错误....解释我.....请... < / p>

The method addEntity(Sprite) is undefined for the type Layer    
andengine.java    /andengine/src/org/anddev/andengine/examples    line 95    Java Problem
The method addShapeModifier(SequenceShapeModifier) is undefined for the type Sprite    
andengine.java    /andengine/src/org/anddev/andengine/examples    line 105    Java Problem
The method setVelocity(float, float) is undefined for the type Sprite    
andengine.java    /andengine/src/org/anddev/andengine/examples    line 100    Java Problem

如何解决这个错误请告诉我......

这是我的编码

package org.anddev.andengine.examples;

import javax.microedition.khronos.opengles.GL10;

import org.anddev.andengine.engine.Engine;
import org.anddev.andengine.engine.camera.Camera;
import org.anddev.andengine.engine.camera.hud.controls.AnalogOnScreenControl;
import org.anddev.andengine.engine.camera.hud.controls.BaseOnScreenControl;
import org.anddev.andengine.engine.camera.hud.controls.AnalogOnScreenControl
.IAnalogOnScreenControlListener;
import org.anddev.andengine.engine.options.EngineOptions;
import org.anddev.andengine.engine.options.EngineOptions.ScreenOrientation;
import org.anddev.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
import org.anddev.andengine.entity.scene.Scene;
import org.anddev.andengine.entity.scene.background.ColorBackground;
import org.anddev.andengine.entity.shape.modifier.ScaleModifier;
import org.anddev.andengine.entity.shape.modifier.SequenceShapeModifier;
import org.anddev.andengine.entity.sprite.Sprite;
import org.anddev.andengine.entity.util.FPSLogger;
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 android.widget.Toast;

/**
* @author Nicolas Gramlich
* @since 00:06:23 - 11.07.2010
*/
public class andengine extends BaseExample {
    // ===========================================================
    // Constants
    // ===========================================================

    private static final int CAMERA_WIDTH = 480;
    private static final int CAMERA_HEIGHT = 320;

    // ===========================================================
    // Fields
    // ===========================================================

    private Camera mCamera;

    private Texture mTexture;
    private TextureRegion mFaceTextureRegion;

    private Texture mOnScreenControlTexture;
    private TextureRegion mOnScreenControlBaseTextureRegion;
    private TextureRegion mOnScreenControlKnobTextureRegion;

    // ===========================================================
    // Constructors
    // ===========================================================

    // ===========================================================
    // Getter & Setter
    // ===========================================================

    // ===========================================================
    // Methods for/from SuperClass/Interfaces
    // ===========================================================

    @Override
    public Engine onLoadEngine() {
            Toast.makeText(this, "Also try tapping this AnalogOnScreenControl!", Toast.LENGTH_LONG).show();
            this.mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
            return new Engine(new EngineOptions(true, ScreenOrientation.LANDSCAPE, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), this.mCamera));
    }

    @Override
    public void onLoadResources() {
            TextureRegionFactory.setAssetBasePath("gfx/");

            this.mTexture = new Texture(32, 32, TextureOptions.BILINEAR_PREMULTIPLYALPHA);
            this.mFaceTextureRegion = TextureRegionFactory.createFromAsset(this.mTexture, this, "face_box.png", 0, 0);

            this.mOnScreenControlTexture = new Texture(256, 128, TextureOptions.BILINEAR_PREMULTIPLYALPHA);
            this.mOnScreenControlBaseTextureRegion = TextureRegionFactory.createFromAsset(this.mOnScreenControlTexture, this, "onscreen_control_base.png", 0, 0);
            this.mOnScreenControlKnobTextureRegion = TextureRegionFactory.createFromAsset(this.mOnScreenControlTexture, this, "onscreen_control_knob.png", 128, 0);

            this.mEngine.getTextureManager().loadTextures(this.mTexture, this.mOnScreenControlTexture);
    }

    @Override
    public Scene onLoadScene() {
            this.mEngine.registerUpdateHandler(new FPSLogger());

            final Scene scene = new Scene(1);
            scene.setBackground(new ColorBackground(0.09804f, 0.6274f, 0.8784f));

            final int centerX = (CAMERA_WIDTH - this.mFaceTextureRegion.getWidth()) / 2;
            final int centerY = (CAMERA_HEIGHT - this.mFaceTextureRegion.getHeight()) / 2;
            final Sprite face = new Sprite(centerX, centerY, this.mFaceTextureRegion);

            scene.getTopLayer().addEntity(face);

            final AnalogOnScreenControl analogOnScreenControl = new AnalogOnScreenControl(0, CAMERA_HEIGHT - this.mOnScreenControlBaseTextureRegion.getHeight(), this.mCamera, this.mOnScreenControlBaseTextureRegion, this.mOnScreenControlKnobTextureRegion, 0.1f, 200, new IAnalogOnScreenControlListener() {
                    @Override
                    public void onControlChange(final BaseOnScreenControl pBaseOnScreenControl, final float pValueX, final float pValueY) {
                            face.setVelocity(pValueX * 100, pValueY * 100);
                    }

                    @Override
                    public void onControlClick(final AnalogOnScreenControl pAnalogOnScreenControl) {
                            face.addShapeModifier(new SequenceShapeModifier(new ScaleModifier(0.25f, 1, 1.5f), new ScaleModifier(0.25f, 1.5f, 1)));
                    }
            });
            analogOnScreenControl.getControlBase().setBlendFunction(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
            analogOnScreenControl.getControlBase().setAlpha(0.5f);
            analogOnScreenControl.getControlBase().setScaleCenter(0, 128);
            analogOnScreenControl.getControlBase().setScale(1.25f);
            analogOnScreenControl.getControlKnob().setScale(1.25f);
            analogOnScreenControl.refreshControlKnobPosition();

            scene.setChildScene(analogOnScreenControl);

            return scene;
    }

    @Override
    public void onLoadComplete() {

    }

    // ===========================================================
    // Methods
    // ===========================================================

    // ===========================================================
    // Inner and Anonymous Classes
    // ===========================================================
   }

Answer 1

您尝试调用以下方法，但它们不存在：

Layer.addEntity(Sprite); //andengine.java, line 95
Sprite.addShapeModifier(SequenceShapeModifier); //andengine.java, line 105
Sprite.setVelocity(float, float); //andengine.java, line 100

只需阅读错误消息即可。他们很清楚。

Answer 2

@mdrg是对的，但我认为这可能不仅仅是为了满足需求。我浏览了这些来源，而Layer类似乎有addEntity(IEntity)方法，而Sprite似乎确实实现了IEntity。< / p>

我怀疑OP可能正在使用与他基于代码的示例不匹配的结帐或JAR。

Answer 3

@Stephen C是对的。 @raja安装了最新版本的AndEngine .jar，其中getTopLayer（）是一种不推荐使用的方法。

scene.getTopLayer().addEntity(face);

使用最新版本的AndEngine，这应该是：

scene.getLastChild().attachChild(face);

最近添加了精灵组合，修改了实体添加到场景图中的方式。

我的编码表明错误？

3 个答案: