MonoGame.Samples/FuelCell/FuelCell.Core/Game/Barrier.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;

namespace FuelCell
{
    public class Barrier : GameObject
    {
        public string BarrierType { get; set; }

        public Barrier()
            : base()
        {
            BarrierType = null;
        }

        public void LoadContent(ContentManager content, string modelName)
        {
            Model = content.Load<Model>(modelName);
            BarrierType = modelName;
            BoundingSphere = CalculateBoundingSphere();
            Position = Vector3.Down;

            BoundingSphere scaledSphere;
            scaledSphere = BoundingSphere;
            scaledSphere.Radius *= GameConstants.BarrierBoundingSphereFactor;
            BoundingSphere = new BoundingSphere(scaledSphere.Center, scaledSphere.Radius);
        }

        public void Draw(Matrix view, Matrix projection)
        {
            Matrix translateMatrix = Matrix.CreateTranslation(Position);
            Matrix worldMatrix = translateMatrix;

            foreach (ModelMesh mesh in Model.Meshes)
            {
                foreach (BasicEffect effect in mesh.Effects)
                {
                    effect.World = worldMatrix;
                    effect.View = view;
                    effect.Projection = projection;

                    effect.EnableDefaultLighting();
                    effect.PreferPerPixelLighting = true;
                }
                mesh.Draw();
            }
        }
    }
}