protected override void Update(GameTime gameTime)
        {
            // Allows the game to exit
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
                this.Exit();

            // TODO: Add your update logic here

        // Particle emitter position
            particulaEngine.PosicaoEmissor = new Vector2(Mouse.GetState().X, Mouse.GetState().Y);
            particulaEngine.Update();

            angulo += 0.01f;



            base.Update(gameTime);
        }