[AndEngine] 11. Intro Screen

1. activity하나 만듬.
2. nullpointerexception 방지를 위해 manifest에 추가.
    android:configChanges="orientation|screenSize"
3.
public class Intro extends Activity {
    Intent intent = null;

    @Override
    onCreate {
        System.gc();
        ....
        Handler x = new Handler();
        x.postDelayed(new splashHandler(), 1000);
    }

    public class splashHandler implements Runnable {
        public void run() {
            Intent intent = new Intent(getApplicationContext(),
                         Jump.class);
            startActivity(intent);

            finish();
        }
    }

    private void clearApplicationCache(java.io.File dir) {
        if (dir == null)
            dir = getCacheDir();
        else
            ;

        if (dir == null)
            return;
     
        java.io.File[] children = dir.listFiles();
        try {
            for (int i=0; i < children.length; i++)
                if (children[i].isDirectory())
                    clearApplicationCache(children[i]);
                else
                    children[i].delete();
        } catch (Exception e) {
        }
    }

    @Override
    public void onDestory() {
        super.onDestory();
        clearApplicationCache(null);
    }
}

[AndEngine] 10. Font 폰트

1. set font.

private Font mFont1;
private Font mFont2;

onCreateResources() {
    ....
    this.mFont1 = FontFactory.create(this.getFontManager(),
            this.getTextureManager(), 256, 256, Typeface.create(Typeface.DEFAULT, Typeface.BOLD, 32);
    this.mFont1.load();

    FontFactory.setAssetBasePath("font/");
    this.mFont2 = FontFactory.create(this.getFontManager(),
            this.getTextureManager(), 512, 512, Typeface.create(Typeface.BILINEAR, this.getAssets(), "Droid.ttf", 28, true, Color.WHITE);
    this.mFont2.load();
    ....
}

onCreateScene() {
    ...
    text = new Text(80, y, this.mFont1, content, content.length(), vertexBufferObjectManager);
}


2. display point.
//
leftText = new Text(80, 35, this.mFont, "0 Meter", "XXXX Meter".length(), vertexBufferObjectManager);
leftText.registerEntityModifier(new ScaleModifier(2, 0.0f, 1.0f));
scene.attachChild(leftText);

[AndEngine] 9. Collision 충돌

if (obj1.collidesWith(obj2) {

}

scene.registerUpdateHandler(new IUpdateHandler() {
    @Override
    public void reset() {
    }

    @Override
    public void onUpdate(final float pSecondsElapsed) {
        if (stone.collidesWith(jump) {
            //TODO
        }
    }
}

[AndEngine] 8. Animation

1. move

onCreateResources() {
    ....
    this.mBitmapTextureAtlasJump = new BitmapTextureAtlas(
            this.getTextureManger(), 200, 100, TextureOptions.BILINEAR);  //image 200x100
    this.mFaceTextureRegionJump = BitmapTextureAtlasTextureRegionFactory.createTitledFromAsset(this.mBitmapTextureAtlasJump, this, "jump.gif", 0, 0, 2, 1);  //2 images
   
    this.mBitmapTextureAtlasJump.load();
}

onCreateScene() {
    ....
    //animate(long[] pFrameDurations, int pFirstTileIndex, int pLastTileIndex, boolean pLoop)
    jump.animate(new long[] {400, 400}, 0, 1, true);
    scene.attachChild(jump);

    return scene;
}
   

2. rotate
//(float pDuration, float pFromRotation, float pToRotation)
this.registerEntityModifier(new RotationModifier(1, 0, -360));

[AndEngine] 7. Jump

onCreateScene() {
    ....
    final Jump jump = new Jump(center_X, center_Y, this.mFaceTextureRegionJump, this.getVertexBufferObjectManager());
    scene.attachChild(jump);

    return scene;
}

private static class Jump extends AnimatedSprite {
    private final PhysicsHandler mPhysicsHandler;

    public Jump(final float pX, final float pY, final TiledTextureRegion pTextureRegion, final VertexBufferObjectManger pVertexBufferObjectManager) {
        super(pX, pY, pTextureRegion, pVertexBufferObjectManager);
        this.mPhysicsHandler = new PhysicsHandler(this);
       
        this.mPhysicsHandler.setVelocityY(JumpSample.DEMO_VELOCITY);
    }
    @Override
    protected void onManagedUpdate(final float pSecondsElapsed) {
        ....
        this.mPhysicsHandler.setVelocityY(JumpSample.DEMO_VELOCITY);//+
        this.mPhysicsHandler.setVelocityY(-JumpSample.DEMO_VELOCITY);//-
    }
}