public async Task ClearContentReference(AbsoluteId referencerId, AssetId contentId, IGraphNode contentNode, NodeIndex index)
{
gameDispatcher.EnsureAccess();
using (await loader.LockDatabaseAsynchronously())
{
if (!references.ContainsKey(referencerId))
{
throw new InvalidOperationException("The given referencer is not registered.");
}
var referencer = references[referencerId];
if (!referencer.ContainsKey(contentId))
{
throw new InvalidOperationException("The given content is not registered to the given referencer.");
}
var accessors = referencer[contentId];
var accessor = new ReferenceAccessor(contentNode, index);
var accesorIndex = accessors.IndexOf(accessor);
if (accesorIndex < 0)
{
throw new InvalidOperationException("The given reference is not registered for the given content and referencer.");
}
accessors.RemoveAt(accesorIndex);
if (accessors.Count == 0)
{
referencer.Remove(contentId);
// Unload the content if nothing else is referencing it anymore
var unloadContent = references.Values.SelectMany(x => x.Keys).All(x => x != contentId);
if (unloadContent)
{
await loader.UnloadAsset(contentId);
contents.Remove(contentId);
}
}
}
}
