/// <summary>
/// This method loads a serialized data object
/// from the StorageContainer for this game.
/// </summary>
public static void LoadScene()
{
// If a save is pending, save as soon as the storage device is chosen.
IAsyncResult result = StorageDevice.BeginShowSelector(PlayerIndex.One, null, null);
result.AsyncWaitHandle.WaitOne();
StorageDevice device = StorageDevice.EndShowSelector(result);
// Open a storage container.
result = device.BeginOpenContainer("StorageDemo", null, null);
// Wait for the WaitHandle to become signaled.
result.AsyncWaitHandle.WaitOne();
StorageContainer container = device.EndOpenContainer(result);
// Close the wait handle.
result.AsyncWaitHandle.Close();
string filename = "savegame.sav";
// Check to see whether the save exists.
if (!container.FileExists(filename))
{
// If not, dispose of the container and return.
container.Dispose();
return;
}
// Open the file.
Stream stream = container.OpenFile(filename, FileMode.Open);
// Read the data from the file.
XmlSerializer serializer = new XmlSerializer(typeof(SceneData));
SceneData data = (SceneData)serializer.Deserialize(stream);
// Close the file.
stream.Close();
// Dispose the container.
container.Dispose();
LoadSaveData(data);
}
} // GetSerializableProperties
#endregion
#region Save Scene
public static void SaveScene()
{
// If a save is pending, save as soon as the storage device is chosen.
IAsyncResult result = StorageDevice.BeginShowSelector(PlayerIndex.One, null, null);
result.AsyncWaitHandle.WaitOne();
StorageDevice device = StorageDevice.EndShowSelector(result);
// Create the data to save.
SceneData data = CreateSaveData();
// Open a storage container.
result = device.BeginOpenContainer("StorageDemo", null, null);
// Wait for the WaitHandle to become signaled.
result.AsyncWaitHandle.WaitOne();
StorageContainer container = device.EndOpenContainer(result);
// Close the wait handle.
result.AsyncWaitHandle.Close();
string filename = "savegame.sav";
// Check to see whether the save exists.
if (container.FileExists(filename))
// Delete it so that we can create one fresh.
container.DeleteFile(filename);
// Create the file.
Stream stream = container.CreateFile(filename);
// Convert the object to XML data and put it in the stream.
XmlSerializer serializer = new XmlSerializer(typeof(SceneData));
serializer.Serialize(stream, data);
// Close the file.
stream.Close();
// Dispose the container, to commit changes.
container.Dispose();
} // Save Scene
} // CreateSaveData
#endregion
#region Load Save Data
/// <summary>
/// Create the structure that will be serialized.
/// It stores content managers, assets and game objects.
/// </summary>
private static void LoadSaveData(SceneData sceneData)
{
// Generate content managers data.
foreach (var contentManagerData in sceneData.ContentManagersData)
{
// Create Content Manager
AssetContentManager contentManager = new AssetContentManager { Name = contentManagerData.Name };
foreach (var assetId in contentManagerData.AssetsId)
{
// The not resourced assets are already created and can change the content manager without recreation.
foreach (var assetsWithoutResourceData in sceneData.AssetsWithoutResourceData)
{
if (assetId == assetsWithoutResourceData.Id)
{
assetsWithoutResourceData.Asset.ChangeContentManager(contentManager);
break;
}
}
}
}
// Recreate game objects (and the transform component)
foreach (var gameObjectData in sceneData.GameObjectData)
{
GameObject gameObject;
if (gameObjectData.is3D)
{
gameObject = new GameObject3D();
((GameObject3D)gameObject).Transform.LocalMatrix = gameObjectData.LocalMatrix;
}
else
{
gameObject = new GameObject2D();
((GameObject2D)gameObject).Transform.LocalMatrix = gameObjectData.LocalMatrix;
}
gameObject.Name = gameObjectData.Name;
gameObject.Layer = Layer.GetLayerByNumber(gameObjectData.LayerNumber);
gameObject.Active = gameObjectData.Active;
gameObjectData.NewGameObject = gameObject; // Use to recreate the hierarchy.
foreach (var componentData in gameObjectData.ComponentData)
{
// Create the component.
// Reflection is needed because we can't know the type in compiler time and I don't want to use an inflexible big switch sentence.
gameObject.GetType().GetMethod("AddComponent").MakeGenericMethod(componentData.Component.GetType()).Invoke(gameObject, null);
// Each serializable property will be copy to the new component.
PropertyInfo componentProperty = gameObject.GetType().GetProperty(componentData.Component.GetType().Name);
List<PropertyInfo> propertiesName = GetSerializableProperties(componentData.Component.GetType());
for (int i = 0; i < propertiesName.Count; i++)
{
var property = propertiesName[i];
Component component = (Component) componentProperty.GetValue(gameObject, null);
Object value = property.GetValue(componentData.Component, null);
property.SetValue(component, value, null);
}
}
}
// Recreate hierarchy.
foreach (var gameObjectData in sceneData.GameObjectData)
{
// If it is has a parent.
if (gameObjectData.ParentId != long.MaxValue)
{
// Search all loaded game objects
foreach (var searchedGameObjectData in sceneData.GameObjectData)
{
if (searchedGameObjectData.Id == gameObjectData.ParentId)
{
if (gameObjectData.is3D)
((GameObject3D)gameObjectData.NewGameObject).Parent = (GameObject3D)searchedGameObjectData.NewGameObject;
else
((GameObject2D)gameObjectData.NewGameObject).Parent = (GameObject2D)searchedGameObjectData.NewGameObject;
break;
}
}
}
}
} // CreateSaveData
/// <summary>
/// Create the structure that will be serialized.
/// It stores content managers, assets and game objects.
/// </summary>
private static SceneData CreateSaveData()
{
SceneData sceneData = new SceneData();
#region Content Managers
// Save content managers data.
foreach (var contentManager in AssetContentManager.SortedContentManagers)
{
// Hidden content managers are ignored.
// They carried information only useful for the system to work.
// Next time you load the scene this information will be (possible) already loaded.
if (!contentManager.Hidden)
{
ContentManagerData contentManagerData = new ContentManagerData();
contentManagerData.Id = contentManager.Id;
contentManagerData.Name = contentManager.Name;
foreach (var asset in contentManager.Assets)
{
contentManagerData.AssetsId.Add(asset.Id);
}
sceneData.ContentManagersData.Add(contentManagerData);
}
}
#endregion
#region Assets
// Save assets data.
foreach (var asset in Asset.SortedLoadedAssets)
{
// Hidden assets are ignored.
// They carried information only useful for the system to work.
// Next time you load the scene this information will be (possible) already loaded.
if (!asset.Hidden)
{
if (asset is AssetWithoutResource)
{
AssetWithoutResourceData assetData = new AssetWithoutResourceData
{
Id = asset.Id,
Asset = (AssetWithoutResource)asset,
};
if (asset is AmbientLight)
{
if (((AmbientLight)asset).AmbientOcclusion != null)
{
assetData.InternalAssetsId.Add(((AmbientLight) asset).AmbientOcclusion.Id);
assetData.InternalAssetPropertyNames.Add("AmbientOcclusion");
}
}
sceneData.AssetsWithoutResourceData.Add(assetData);
}
}
}
#endregion
#region Game Objects
// Save content managers data.
foreach (var gameObject in GameObject.GameObjects)
{
// Hidden content managers are ignored.
// They carried information only useful for the system to work.
// Next time you load the scene this information will be (possible) already loaded.
if (gameObject.Layer.Number != 31 && gameObject.Layer.Number != 30)
{
GameObjectData gameObjectData = new GameObjectData
{
Id = gameObject.Id,
Name = gameObject.Name,
is3D = gameObject is GameObject3D,
Active = gameObject.Active,
LayerNumber = gameObject.Layer.Number
};
// Parent
if (gameObject is GameObject3D)
{
gameObjectData.ParentId = ((GameObject3D)gameObject).Parent != null ? ((GameObject3D) gameObject).Parent.Id : long.MaxValue;
gameObjectData.LocalMatrix = ((GameObject3D)gameObject).Transform.LocalMatrix;
}
else
{
gameObjectData.ParentId = ((GameObject2D)gameObject).Parent != null ? ((GameObject2D)gameObject).Parent.Id : long.MaxValue;
gameObjectData.LocalMatrix = ((GameObject2D)gameObject).Transform.LocalMatrix;
}
// Components
foreach (var component in gameObject.Components)
{
ComponentData componentData = new ComponentData
{
Id = component.Id,
Component = component
};
gameObjectData.ComponentData.Add(componentData);
}
sceneData.GameObjectData.Add(gameObjectData);
}
}
#endregion
return sceneData;
} // CreateSaveData
