Yes!!
Now the engine can do a milk shake!!!
A Shake Class, that shakes the screen was created.
You can easy create a shake using the code above:
Shake shake = new Shake( currentScene.getCamera() , 2 , 2 , 10 );
Where, 2 ,2 and 10 are respectively shakeX, ShakeY and shake duration.
The plane4.java has it implemented.

plane4
If someone don’t lknow the engine make that explosion with a single line too:
Explosion explod = new Explosion( Anim.makeFromTiledImage("explosion.png", 64, 64, 1, "Explod") ,ovni.getX() , ovni.getY() );
Anim.makeFromTileImage is a static method of anim class the create a animation when you pass a tiledImage (64,64 is the size of the tile, 1 is the time that each frames persist, and “Explod” is the animation name, others paramaters are the position of explosion. The explosion class can be used in other cases too, to create other effects that enter in screen, and out when animation ends.
We hope you enjoy!!