- Use LongBitSetAllocator and not BitSetAllocator. Using the wrong allocator means all string based checks and displays would provide incorrect results.
- Remove LongBitSetAllocator.Mask which wasn't being calculated or Reset correctly. We can use world.AllPlayersMask to provide the same effect at use sites.
The BlockingCollection would have `IsAddingCompleted` to true, but `IsComplete` to false, slipping through the cracks and causing an InvalidOperationException ("The collection has been marked as complete with regards to additions.") when trying to add to it.
We now add a check on `(Try)SendData` to only try to add if we can. The collection is still viable for reading until empty/`IsComplete`.
Modifying the list potentially several thousand times is really slow, so notify the child elements that they are being removed and then clear the list in one go.
By tracking updates on the ActorMap the HierarchicalPathFinder can be aware of actors moving around the map. We track a subset of immovable actors that always block. These actors can be treated as impassable obstacles just like terrain. When a path needs to be found the abstract path will guide the search around this subset of immovable actors just like it can guide the search around impassable terrain. For path searches that were previously imperformant because some immovable actors created a bottleneck that needed to be routed around, these will now be performant instead. Path searches with bottlenecks created by items such as trees, walls and buildings should see a performance improvement. Bottlenecks created by other units will not benefit.
We now maintain two sets of HPFs. One is aware of immovable actors and will be used for path searches that request BlockedByActor.Immovable, BlockedByActor.Stationary and BlockedByActor.All to guide that around the immovable obstacles. The other is aware of terrain only and will be used for searches that request BlockedByActor.None, or if an ignoreActor is provided. A new UI dropdown when using the `/hpf` command will allow switching between the visuals of the two sets.
When this cheat is used by notifying of shroud changes we invoke the usual logic that would occur if the visibility had been granted by units. Without this change any cached information about the visibility is not refreshed. Without this refresh actors with different visibility may not act correctly.
One aspect this improves is frozen actors. Using the visibility cheat will show up all actors on the map. If the cheat is then disabled than frozen actors will appear in their place. Prior to this change a frozen actor would fail to appear if the cheat had caused it to be revealed. Healthbars and selection boxes are also made consistent for similar reasons.
