/// <summary>
        /// Spawns a ParticleEmitter of the specified type at the specified 
        /// location.
        /// </summary>
        /// <param name="type">The type ParticleEmitter to spawn</param>
        /// <param name="location">The location to spawn the ParticleEmitter 
        /// at</param>
        /// <returns>Returns a reference to the spawned ParticleEmitter
        /// </returns>
        public static ParticleEmitter spawnParticleEmitter(ParticleEmitterType type, Vector3 location)
        {
            checkIfInitialized();
            ParticleEmitter spawnedParticleEmitter = null;

            switch (type)
            {
                case ParticleEmitterType.explosion:
                    spawnedParticleEmitter = new ExplosionParticleEmitter(ContentLoader.ExplosionParticleTexture, location, Settings.EXPLOSION_PARTICLE_ACCELERATION,
                        Settings.EXPLOSION_PARTICLES, Settings.EXPLOSION_PARTICLE_SIZE, Settings.EXPLOSION_PARTICLE_GROWTH_RATE, Settings.EXPLOSION_PARTICLE_LIFESPAN);
                    break;
                case ParticleEmitterType.stream:
                    spawnedParticleEmitter = new StreamParticleEmitter(ContentLoader.CloudParticleTexture, location, Settings.SMOKE_PARTICLE_ACCELERATION,
                        Settings.SMOKE_PARTICLE_SIZE, Settings.SMOKE_PARTICLE_GROWTH_RATE, Settings.SMOKE_PARTICLE_LIFESPAN, Settings.SMOKE_PARTICLE_PARTICLES_PER_SECOND);
                    break;
            }

            if (spawnedParticleEmitter != null)
            {
                managedParticleEmitters.Add(spawnedParticleEmitter);
            }

            return spawnedParticleEmitter;
        }
 /// <summary>
 /// Creates a PlaneSmokeTrail at the given locaiton.
 /// </summary>
 /// <param name="location">Location of the PlaneSmokeTrail</param>
 public PlaneSmokeTrail(Vector3 location)
     : base(location, Vector3.Empty, Vector3.Empty)
 {
     streamParticleEmitter = (StreamParticleEmitter)ParticleEmitterManager.spawnParticleEmitter(ParticleEmitterType.stream, location);
 }