add TileMapLoader

Blarg.GameFramework/Blarg.GameFramework.csproj

@@ -220,6 +220,7 @@
     <Compile Include="Graphics\Atlas\Json\TextureAtlasLoader.cs" />
     <Compile Include="TileMap\TileDataSerializer.cs" />
     <Compile Include="TileMap\Json\JsonTileMap.cs" />
+    <Compile Include="TileMap\Json\TileMapLoader.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\Portable\$(TargetFrameworkVersion)\Microsoft.Portable.CSharp.targets" />
   <ItemGroup>

Blarg.GameFramework/TileMap/Json/JsonTileMap.cs

@@ -15,4 +15,3 @@ namespace Blarg.GameFramework.TileMap.Json
 		public List<string> Chunks;
 	}
 }
-

Blarg.GameFramework/TileMap/Json/TileMapLoader.cs

@@ -0,0 +1,73 @@
+using System;
+using Blarg.GameFramework.TileMap.Meshes;
+using Blarg.GameFramework.TileMap;
+using System.IO;
+using Newtonsoft.Json;
+using Blarg.GameFramework.TileMap.Lighting;
+
+namespace Blarg.GameFramework.TileMap.Json
+{
+	public static class TileMapLoader
+	{
+		public static TileMap Load(string file, TileMeshCollection tileMeshes)
+		{
+			var stream = Framework.FileSystem.Open(file);
+			string path = null;
+			if (file.Contains("/"))
+				path = file.Substring(0, file.LastIndexOf('/') + 1);
+
+			return Load(stream, tileMeshes, path);
+		}
+
+		public static TileMap Load(Stream file, TileMeshCollection tileMeshes, string path = null)
+		{
+			if (file == null)
+				throw new ArgumentNullException("file");
+			if (tileMeshes == null)
+				throw new ArgumentNullException("tileMeshes");
+
+			var reader = new StreamReader(file);
+			var map = JsonConvert.DeserializeObject<JsonTileMap>(reader.ReadToEnd());
+
+			if (map.Chunks == null || map.Chunks.Count == 0)
+				throw new ConfigFileException("Invalid map: no chunks.");
+
+			int numChunks = map.WidthInChunks * map.HeightInChunks * map.DepthInChunks;
+			if (map.Chunks.Count != numChunks)
+				throw new ConfigFileException("Inconsistent map dimensions and actual number of chunks found.");
+
+			ChunkVertexGenerator chunkVertexGenerator = null;
+			ITileMapLighter lighter = null;
+
+			if (String.IsNullOrEmpty(map.LightingMode))
+				chunkVertexGenerator = new ChunkVertexGenerator();
+			else if (map.LightingMode.ToLower() == "simple")
+				throw new NotImplementedException();
+			else if (map.LightingMode.ToLower() == "skyAndSources")
+				throw new NotImplementedException();
+			else
+				throw new ConfigFileException("Invalid lighting mode.");
+
+			var tileMap = new TileMap(map.ChunkWidth, map.ChunkHeight, map.ChunkDepth,
+			                          map.WidthInChunks, map.HeightInChunks, map.DepthInChunks,
+			                          tileMeshes,
+			                          chunkVertexGenerator,
+			                          lighter);
+
+			for (int i = 0; i < numChunks; ++i)
+			{
+				string encodedChunk = map.Chunks[i];
+				var outputChunk = tileMap.Chunks[i];
+
+				var buffer = new MemoryStream(Convert.FromBase64String(encodedChunk));
+				using (var byteReader = new BinaryReader(buffer))
+				{
+					TileDataSerializer.Deserialize(byteReader, outputChunk);
+				}
+			}
+
+			return tileMap;
+		}
+	}
+}
+