Add backend plumbing for model loaders.

OpenRA.Game/Graphics/Model.cs

@@ -0,0 +1,69 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2017 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using OpenRA.FileSystem;
+
+namespace OpenRA.Graphics
+{
+	public interface IModel
+	{
+		uint Frames { get; }
+		uint Sections { get; }
+
+		float[] TransformationMatrix(uint section, uint frame);
+		float[] Size { get; }
+		float[] Bounds(uint frame);
+		VoxelRenderData RenderData(uint section);
+	}
+
+	public interface IModelCache : IDisposable
+	{
+		IModel GetModelSequence(string model, string sequence);
+		bool HasModelSequence(string model, string sequence);
+		IVertexBuffer<Vertex> VertexBuffer { get; }
+	}
+
+	public interface IModelSequenceLoader
+	{
+		Action<string> OnMissingModelError { get; set; }
+		IModelCache CacheModels(IReadOnlyFileSystem fileSystem, ModData modData, IReadOnlyDictionary<string, MiniYamlNode> modelDefinitions);
+	}
+
+	public class PlaceholderModelSequenceLoader : IModelSequenceLoader
+	{
+		public Action<string> OnMissingModelError { get; set; }
+
+		class PlaceholderModelCache : IModelCache
+		{
+			public IVertexBuffer<Vertex> VertexBuffer { get { throw new NotImplementedException(); } }
+
+			public void Dispose() { }
+
+			public IModel GetModelSequence(string model, string sequence)
+			{
+				throw new NotImplementedException();
+			}
+
+			public bool HasModelSequence(string model, string sequence)
+			{
+				throw new NotImplementedException();
+			}
+		}
+
+		public PlaceholderModelSequenceLoader(ModData modData) { }
+
+		public IModelCache CacheModels(IReadOnlyFileSystem fileSystem, ModData modData, IReadOnlyDictionary<string, MiniYamlNode> modelDefinitions)
+		{
+			return new PlaceholderModelCache();
+		}
+	}
+}