public override object ReadYaml(ref ObjectContext objectContext)
{
if (recursionLevel++ == 0)
{
SetupMaxExpectedDepth(objectContext);
}
++levelSinceScriptComponent;
if (objectContext.Descriptor.Type == typeof(ScriptComponent))
{
levelSinceScriptComponent = 0;
}
try
{
var result = base.ReadYaml(ref objectContext);
if (objectContext.Descriptor.Type == typeof(EntityHierarchyData))
{
// Let's fixup entity references after serialization
EntityAnalysis.FixupEntityReferences((EntityHierarchyData)objectContext.Instance);
}
return(result);
}
finally
{
recursionLevel--;
levelSinceScriptComponent--;
}
}
public static EntityAsset ExtractSceneClone(EntityAsset source, Guid sourceRootEntity)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
// Note: Instead of copying the whole asset (with its potentially big hierarchy), we first copy the asset only (without the hierarchy), then the sub-hierarchy to extract.
// create the hierarchy of the sub-tree
var subTreeRoot = source.Hierarchy.Entities[sourceRootEntity];
var subTreeHierarchy = new EntityHierarchyData {
Entities = { subTreeRoot }, RootEntities = { sourceRootEntity }
};
foreach (var subTreeEntity in subTreeRoot.EnumerateChildren(true))
{
subTreeHierarchy.Entities.Add(subTreeEntity);
}
// clone the entities of the sub-tree
var clonedHierarchy = (EntityHierarchyData)AssetCloner.Clone(subTreeHierarchy);
clonedHierarchy.Entities[sourceRootEntity].Transform.Parent = null;
// set to null reference outside of the sub-tree
EntityAnalysis.FixupEntityReferences(clonedHierarchy);
// temporary nullify the hierarchy to avoid to clone it
var sourceHierarchy = source.Hierarchy;
source.Hierarchy = null;
// clone asset without hierarchy
var clonedAsset = (EntityAsset)AssetCloner.Clone(source);
clonedAsset.Hierarchy = clonedHierarchy;
// revert the source hierarchy
source.Hierarchy = sourceHierarchy;
return(clonedAsset);
}
public void ApplyChanges()
{
// "Garbage collect" entities that are not referenced in hierarchy tree anymore
var entityHashes = new HashSet <Guid>();
CollectEntities(entityHashes, source.RootEntity);
source.Entities.Clear();
foreach (var item in this)
{
if (entityHashes.Contains(item.Key))
{
source.Entities.Add(item.Value);
}
}
// Fixup references
EntityAnalysis.FixupEntityReferences(source);
}
public override object ReadYaml(ref ObjectContext objectContext)
{
EnterNode(ref objectContext);
try
{
var result = base.ReadYaml(ref objectContext);
if (objectContext.Descriptor.Type == typeof(EntityHierarchyData))
{
// Let's fixup entity references after serialization
EntityAnalysis.FixupEntityReferences((EntityHierarchyData)objectContext.Instance);
}
return(result);
}
finally
{
LeaveNode(ref objectContext);
}
}