public void Convert(Entity entity, EntityManager dstManager, GameObjectConversionSystem conversionSystem)
        {
            var prefabEntity = conversionSystem.GetPrimaryEntity(prefab);

            ExplosionSystem.Initialize(prefabEntity);
            RenderExplosionSystem.Initialize(materialExplosion);
        }
 protected override void OnCreate()
 {
     _query = GetEntityQuery(new EntityQueryDesc()
     {
         All = new ComponentType[] {
             ComponentType.ReadOnly <ExplosionComponent>(),
         },
     });
     _batchMatrices         = new NativeList <Matrix4x4>(RenderExplosionSystem.BatchNum * Cv.InstanceLimit, Allocator.Persistent);
     _renderExplosionSystem = World.GetOrCreateSystem <RenderExplosionSystem>();
 }