ANDENGINE BASIC CONCEPT

                                                                         BASIC

                                                              

Programme :

package com.example.practe1;

import org.andengine.engine.camera.Camera;
import org.andengine.engine.options.EngineOptions;
import org.andengine.engine.options.ScreenOrientation;
import org.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
import org.andengine.entity.scene.Scene;
import org.andengine.entity.scene.background.Background;
import org.andengine.entity.sprite.Sprite;
import org.andengine.opengl.texture.TextureOptions;
import org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas;
import org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory;
import org.andengine.opengl.texture.region.ITextureRegion;
import org.andengine.ui.activity.BaseGameActivity;



public class MainActivity extends BaseGameActivity{

public    int cam_width=480;
public     int cam_height=800;
public Camera mycam;
public Scene seen1;
   
public ITextureRegion png;
public BitmapTextureAtlas pngsize;
   
    @Override
    public EngineOptions onCreateEngineOptions() {
     
        mycam=new Camera(0, 0,cam_width, cam_height);
        EngineOptions engine=new EngineOptions(true, ScreenOrientation.PORTRAIT_FIXED,
                new RatioResolutionPolicy(cam_width, cam_height), mycam);
       
        return engine;
    }

    @Override
    public void onCreateResources(
            OnCreateResourcesCallback pOnCreateResourcesCallback)
            throws Exception {
        pngsize=new BitmapTextureAtlas(getTextureManager(), 64, 64, TextureOptions.BILINEAR);
        png=BitmapTextureAtlasTextureRegionFactory.createFromAsset(pngsize, this, "gfx/fx.png",0,0);
        this.getEngine().getTextureManager().loadTexture(pngsize);
        pOnCreateResourcesCallback.onCreateResourcesFinished();
    }

    @Override
    public void onCreateScene(OnCreateSceneCallback pOnCreateSceneCallback)
            throws Exception {
        seen1=new Scene();
        seen1.setBackground(new Background(12,78,90));       
        pOnCreateSceneCallback.onCreateSceneFinished(seen1);
    }

    @Override
    public void onPopulateScene(Scene pScene,
            OnPopulateSceneCallback pOnPopulateSceneCallback) throws Exception {
       
    Sprite img=new Sprite(100, 100, png,this.getEngine().getVertexBufferObjectManager());
    seen1.attachChild(img);
       
        pOnPopulateSceneCallback.onPopulateSceneFinished();
    }
}