/// <summary>
        /// Constructor.
        /// </summary>
        public Particle3DSampleGame()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";

            // Construct our particle system components.
            explosionParticles = new ExplosionParticleSystem(this, Content);
            explosionSmokeParticles = new ExplosionSmokeParticleSystem(this, Content);
            projectileTrailParticles = new ProjectileTrailParticleSystem(this, Content);
            smokePlumeParticles = new GenericParticleSystem(this, Content);
            fireParticles = new FireParticleSystem(this, Content);
            fireStreamParticles = new FirestreamParticleSystem(this, Content);

            smokePlumeParticles.InitializeSettings(new ParticleSettings("Test.xml"));

            // Register the particle system components.
        }