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POWP7 tombstoning, saving sprite into Current state not working
 

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    <p>I am working on a WP7 game. I am using Game state managment (http://create.msdn.com/en-US/education/catalog/sample/game_state_management , but I think its not important ) I have problem with saving data into Microsoft.Phone.Shell.PhoneApplicationService.Current.State</p> <p>if I put there sprite in this method</p> <pre><code> public override void Deactivate() { #if WINDOWS_PHONE Microsoft.Phone.Shell.PhoneApplicationService.Current.State["Score"] = Score; Microsoft.Phone.Shell.PhoneApplicationService.Current.State["cloudSprite"] = cloudSprite; #endif base.Deactivate(); } </code></pre> <p>there is nothing in </p> <pre><code> Microsoft.Phone.Shell.PhoneApplicationService.Current.State </code></pre> <p>in activate method. However if I remove cloudSprite and put there only Score which is int it works fine. I dont know whats wrong maybe it cant handle more complex objects. I tried also float doubel, it all works. But if I put there something more complex it doesnt work. What do you think ?</p> <p><b>EDIT</p> <p></b> This is my sprite class. I dont know how to make it serializable. I have added there [DataContractAttribute()] and [DataMember] but its not working</p> <pre><code> using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Graphics; using Microsoft.Xna.Framework.Content; using System.Runtime.Serialization; using System.IO; namespace GameStateManagementSample.GameObjects { [DataContractAttribute()] public class Sprite { [DataMember] public Vector2 Position; [DataMember] public Vector2 Size; [DataMember] public Texture2D Texture; [DataMember] public Rectangle Rect { get { return new Rectangle((int)Position.X, (int)Position.Y, (int)Size.X, (int)Size.Y); } } public Sprite(Vector2 position) { Position = position; } public Sprite(Vector2 position, Vector2 size) { Position = position; Size = size; } public Sprite(Vector2 position, Texture2D texture) { Position = position; Texture = texture; Size = new Vector2(Texture.Width, Texture.Height); } public void LoadContent(string assetName, ContentManager content) { Texture = content.Load&lt;Texture2D&gt;(assetName); if (Size == Vector2.Zero) Size = new Vector2(Texture.Width, Texture.Height); } public virtual void Draw(SpriteBatch spriteBatch) { //spriteBatch.Draw(Texture, Rect, Color.White); spriteBatch.Draw(Texture, Position, Color.White); } public virtual void Draw(SpriteBatch spriteBatch, Rectangle TexturePositionInSpriteSheet, Color color) { spriteBatch.Draw(Texture, Position, TexturePositionInSpriteSheet, color); } public bool Intersects(Vector2 point) { if (point.X &gt;= Position.X &amp;&amp; point.Y &gt;= Position.Y &amp;&amp; point.X &lt;= Position.X + Size.X &amp;&amp; point.Y &lt;= Position.Y + Size.Y) return true; else return false; } public bool Intersects(Rectangle rect) { return Rect.Intersects(rect); } public static void Serialize(Stream streamObject, object objForSerialization) { if (objForSerialization == null || streamObject == null) return; DataContractSerializer ser = new DataContractSerializer(objForSerialization.GetType()); ser.WriteObject(streamObject, objForSerialization); } public static object Deserialize(Stream streamObject, Type serializedObjectType) { if (serializedObjectType == null || streamObject == null) return null; DataContractSerializer ser = new DataContractSerializer(serializedObjectType); return ser.ReadObject(streamObject); } } } </code></pre>
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