public bool UpdateLinkState(bool checkFileChanged)
{
PrefabLinkState lastState = this.linkState;
ComponentNode cmpNode = this as ComponentNode;
GameObjectNode objNode = (cmpNode != null ? cmpNode.Parent : this) as GameObjectNode;
PrefabLink prefabLink = objNode != null ? objNode.Obj.AffectedByPrefabLink : null;
bool affectedByPrefabLink = prefabLink != null;
if (cmpNode != null)
{
affectedByPrefabLink = affectedByPrefabLink && prefabLink.AffectsObject(cmpNode.Component);
}
if (objNode != null)
{
affectedByPrefabLink = affectedByPrefabLink && prefabLink.AffectsObject(objNode.Obj);
}
string filePath = affectedByPrefabLink ? prefabLink.Prefab.Path : null;
bool fileExists = this.linkLastExisted;
if (checkFileChanged || this.linkLastPath != filePath)
{
fileExists = File.Exists(filePath);
}
// Prefab-linked entities
if (affectedByPrefabLink && fileExists) //prefabLink.Prefab.IsAvailable) // Not sufficient - might be loaded but with a broken path
{
this.linkState = PrefabLinkState.Active;
}
else if (cmpNode == null && objNode.Obj.PrefabLink != null)
{
this.linkState = PrefabLinkState.Broken;
}
else
{
this.linkState = PrefabLinkState.None;
}
this.linkLastExisted = fileExists;
this.linkLastPath = filePath;
return(this.linkState != lastState);
}
/// <summary>
/// A <see cref="Cohee.Serialization.Serializer.FieldBlockers">FieldBlocker</see> to prevent
/// fields of <see cref="Cohee.Resources.PrefabLink">PrefabLink-ed</see> objects from being serialized unnecessarily.
/// </summary>
/// <param name="field"></param>
/// <param name="obj"></param>
/// <returns></returns>
public static bool PrefabLinkedFieldBlocker(FieldInfo field, object obj)
{
Component cmp = obj as Component;
if (cmp == null || cmp.GameObj == null)
{
return(false);
}
PrefabLink link = cmp.GameObj.AffectedByPrefabLink;
if (link == null || !link.AffectsObject(cmp))
{
return(false);
}
return(field.DeclaringType != typeof(Component));
}