add support for class (nested) properties

src/cs/MonoGame.Extended.Content.Pipeline/Tiled/ContentWriterExtensions.cs

@@ -9,11 +9,17 @@ namespace MonoGame.Extended.Content.Pipeline.Tiled
         // ReSharper disable once SuggestBaseTypeForParameter
         public static void WriteTiledMapProperties(this ContentWriter writer, IReadOnlyCollection<TiledMapPropertyContent> value)
         {
+            if (value == null)
+            {
+                writer.Write(0);
+                return;
+            }
             writer.Write(value.Count);
             foreach (var property in value)
             {
                 writer.Write(property.Name);
-                writer.Write(property.Value);
+                writer.Write(property.Value ?? string.Empty);
+                WriteTiledMapProperties(writer, property.Properties);
             }
         }
     }

src/cs/MonoGame.Extended.Tiled/ContentReaderExtensions.cs

@@ -0,0 +1,20 @@
+using Microsoft.Xna.Framework.Content;
+
+namespace MonoGame.Extended.Tiled
+{
+    public static class ContentReaderExtensions
+    {
+        public static void ReadTiledMapProperties(this ContentReader reader, TiledMapProperties properties)
+        {
+            var count = reader.ReadInt32();
+
+            for (var i = 0; i < count; i++)
+            {
+                var key = reader.ReadString();
+                var value = new TiledMapPropertyValue(reader.ReadString());
+                ReadTiledMapProperties(reader, value.Properties);
+                properties[key] = value;
+            }
+        }
+    }
+}

src/cs/MonoGame.Extended.Tiled/Serialization/TiledMapPropertyContent.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Xml.Serialization;
 
 namespace MonoGame.Extended.Tiled.Serialization
@@ -13,6 +14,10 @@ namespace MonoGame.Extended.Tiled.Serialization
         [XmlText]
         public string ValueBody { get; set; }
 
+        [XmlArray("properties")]
+        [XmlArrayItem("property")]
+        public List<TiledMapPropertyContent> Properties { get; set; }
+
         public string Value => ValueAttribute ?? ValueBody;
 
         public override string ToString()
@@ -20,4 +25,4 @@ namespace MonoGame.Extended.Tiled.Serialization
             return $"{Name}: {Value}";
         }
     }
-}
+}

src/cs/MonoGame.Extended.Tiled/TiledMapProperties.cs

@@ -2,7 +2,13 @@
 
 namespace MonoGame.Extended.Tiled
 {
-    public class TiledMapProperties : Dictionary<string, string>
+    public class TiledMapProperties : Dictionary<string, TiledMapPropertyValue>
     {
+        public bool TryGetValue(string key, out string value)
+        {
+            bool result = TryGetValue(key, out TiledMapPropertyValue tmpVal);
+            value = result ? null : tmpVal.Value;
+            return result;
+        }
     }
-}
+}

src/cs/MonoGame.Extended.Tiled/TiledMapPropertyValue.cs

@@ -0,0 +1,32 @@
+namespace MonoGame.Extended.Tiled;
+
+public class TiledMapPropertyValue
+{
+    public string Value { get; }
+
+    public TiledMapProperties Properties;
+
+    public TiledMapPropertyValue()
+    {
+        Value = string.Empty;
+        Properties = new();
+    }
+
+    public TiledMapPropertyValue(string value)
+    {
+        Value = value;
+        Properties = new();
+    }
+
+    public TiledMapPropertyValue(TiledMapProperties properties)
+    {
+        Value = string.Empty;
+        Properties = properties;
+    }
+
+    public override string ToString() => Value;
+
+    //public static implicit operator TiledMapPropertyValue(string value) => new(value);
+    public static implicit operator string(TiledMapPropertyValue value) => value.Value;
+    public static implicit operator TiledMapProperties(TiledMapPropertyValue value) => value.Properties;
+}

src/cs/MonoGame.Extended.Tiled/TiledMapReader.cs

@@ -16,24 +16,12 @@ namespace MonoGame.Extended.Tiled
                 return existingInstance;
 
             var map = ReadTiledMap(reader);
-            ReadProperties(reader, map.Properties);
+            reader.ReadTiledMapProperties(map.Properties);
             ReadTilesets(reader, map);
             ReadLayers(reader, map);
             return map;
         }
 
-        private static void ReadProperties(ContentReader reader, TiledMapProperties properties)
-        {
-            var count = reader.ReadInt32();
-
-            for (var i = 0; i < count; i++)
-            {
-                var key = reader.ReadString();
-                var value = reader.ReadString();
-                properties[key] = value;
-            }
-        }
-
         private static TiledMap ReadTiledMap(ContentReader reader)
         {
             var name = reader.AssetName;
@@ -98,7 +86,7 @@ namespace MonoGame.Extended.Tiled
             var parallaxFactor = new Vector2(parallaxX, parallaxY);
             var properties = new TiledMapProperties();
 
-            ReadProperties(reader, properties);
+            reader.ReadTiledMapProperties(properties);
 
             TiledMapLayer layer;
 
@@ -154,7 +142,7 @@ namespace MonoGame.Extended.Tiled
             var properties = new TiledMapProperties();
             const float opacity = 1.0f;
 
-            ReadProperties(reader, properties);
+            reader.ReadTiledMapProperties(properties);
 
             TiledMapObject mapObject;
 

src/cs/MonoGame.Extended.Tiled/TiledMapTilesetReader.cs

@@ -38,12 +38,12 @@ namespace MonoGame.Extended.Tiled
                         new TiledMapTilesetTile(localTileIdentifier, type, objects)) 
                     : ReadTiledMapTilesetTile(reader, tileset, objects => 
                         new TiledMapTilesetAnimatedTile(localTileIdentifier, ReadTiledMapTilesetAnimationFrames(reader, tileset, animationFramesCount), type, objects));
-
-                ReadProperties(reader, tilesetTile.Properties);
+                
+                reader.ReadTiledMapProperties(tilesetTile.Properties);
                 tileset.Tiles.Add(tilesetTile);
             }
-
-            ReadProperties(reader, tileset.Properties);
+            
+            reader.ReadTiledMapProperties(tileset.Properties);
             return tileset;
 		}
 
@@ -88,7 +88,7 @@ namespace MonoGame.Extended.Tiled
 			var properties = new TiledMapProperties();
 			const float opacity = 1.0f;
 
-			ReadProperties(reader, properties);
+            reader.ReadTiledMapProperties(properties);
 
 			TiledMapObject mapObject;
 
@@ -134,17 +134,5 @@ namespace MonoGame.Extended.Tiled
 
 			return points;
 		}
-
-		private static void ReadProperties(ContentReader reader, TiledMapProperties properties)
-		{
-			var count = reader.ReadInt32();
-
-			for (var i = 0; i < count; i++)
-			{
-				var key = reader.ReadString();
-				var value = reader.ReadString();
-				properties[key] = value;
-			}
-		}
 	}
 }