implemented proper disposal

RecrownedAthenaeum/DataTypes/TextureAtlas.cs

@@ -2,16 +2,17 @@
 using Microsoft.Xna.Framework.Graphics;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 
 namespace RecrownedAthenaeum.DataTypes
 {
     /// <summary>
     /// Holds information about an image file that contains various textures in various regions in the file.
     /// </summary>
-    public class TextureAtlas
+    public class TextureAtlas : IDisposable
     {
         private Texture2D texture;
-
+        private bool disposed;
         private Dictionary<string, TextureAtlasRegion> dictionaryOfRegions = new Dictionary<string, TextureAtlasRegion>();
         
         /// <summary>
@@ -71,6 +72,40 @@ namespace RecrownedAthenaeum.DataTypes
             return dictionaryOfRegions[name].AsTexture2D(graphicsDevice);
         }
 
+        /// <summary>
+        /// Disposes unmanaged resources for the texture atlas.
+        /// </summary>
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        /// <summary>
+        /// Overridable disposal method.
+        /// </summary>
+        /// <param name="disposing">Only true if user calls <see cref="Dispose()"/></param>
+        public virtual void Dispose(bool disposing)
+        {
+            disposed = true;
+            if (!disposed && disposing)
+            {
+                texture.Dispose();
+                for (int i = 0; i < dictionaryOfRegions.Count; i++)
+                {
+                    dictionaryOfRegions.ElementAt(i).Value.Dispose();
+                }
+                dictionaryOfRegions.Clear();
+            }
+        }
+
+        /// <summary>
+        /// Destructor.
+        /// </summary>
+        ~TextureAtlas()
+        {
+            Dispose(false);
+        }
+
         /// <summary>
         /// A region of a <see cref="TextureAtlas"/>.
         /// </summary>
@@ -80,6 +115,7 @@ namespace RecrownedAthenaeum.DataTypes
             /// The name of the region. Mostly used to be refered to within the context of a <see cref="TextureAtlas"/>.
             /// </summary>
             public readonly string name;
+
             /// <summary>
             /// The location and dimensions of where the original texture resides on the texture representing the atlas.
             /// </summary>