/// <summary>
/// Removes an existing resource handle
/// </summary>
/// <remarks>
/// <para>Note that no fuzzy type matching is done; it will only remove from the list for the exact type</para>
/// </remarks>
public void RemoveResourceHandle <T>(ResourceHandle handle)
{
RemoveResourceHandle(handle, typeof(T));
}
//gets the best-fit, highest-priority resource by name
private T GetResource <T>(int depth = 0, ResourceObject root = null) where T : UnityEngine.Object
{
//no!
//if (ResourceHandles.ContainsKey(typeof(T)))
// return ((ResourceHandle<T>)GetBestResource(ResourceHandles[typeof(T)])).Resource;
if (TypeBestResourceCache.TryGetValue(typeof(T), out var cachedValue))
{
return((T)cachedValue.Resource); //TODO check for null? necessary for redirects I think
}
//explore for type to make sure we have that
ExploreForType <T>();
//then scan and get the highest priority of assignable types
List <ResourceHandle> possibleResourceHandles = new List <ResourceHandle>();
foreach (var kvp in ResourceHandleLists)
{
if (typeof(T).IsAssignableFrom(kvp.Key) && kvp.Value.Count > 0)
{
possibleResourceHandles.Add(GetBestResource(kvp.Value));
}
}
if (possibleResourceHandles.Count == 0)
{
return(null);
}
if (possibleResourceHandles.Count == 1)
{
return((T)possibleResourceHandles[0].Resource);
}
ResourceHandle bestResourceHandle = null;
T bestRedirectedResource = null;
foreach (var rHandle in possibleResourceHandles)
{
if (bestResourceHandle == null || rHandle.Priority > bestResourceHandle.Priority || (rHandle.Priority == bestResourceHandle.Priority && rHandle.HandleID > bestResourceHandle.HandleID))
{
if (rHandle is IRedirectHandle irh)
{
object redirectedResource = irh.GetRedirectedResource(false, depth, root ?? this);
if (redirectedResource.Ref() == null)
{
continue; //abort
}
else
{
bestRedirectedResource = (T)redirectedResource;
bestResourceHandle = rHandle;
continue;
}
}
bestRedirectedResource = null;
bestResourceHandle = rHandle;
}
}
if (bestResourceHandle != null)
{
if (!(bestResourceHandle is IRedirectHandle))
{
TypeBestResourceCache.Add(typeof(T), bestResourceHandle);
}
if (bestRedirectedResource != null)
{
return(bestRedirectedResource);
}
return((T)bestResourceHandle.Resource);
}
return(null);
}