Tux pointed out the patch still has O(n^2) time complexity since
the sublist class in arraylist does not override clear() from
AbstractList, which uses a forward moving iterator to clear
the list.
Resolved by using a peek and poll from ArrayDeque.
This patch also removes the useless WeakHashMap which holds
the list (it mapped world->list) and replaces it with a
field on World.
- Re-removes Bukkit#getServerName - This was (hopefully?) only added back
for Timings v2. It should be kept in that scope.
- Intend to let PlayerViewDistance API slip. Given the scope of the
changes in this area it seems best to let this slip past initial
release. It can be re-added when there is additional time to focus on it
and the changed systems it relies on. If it is fixed prior to release
this is implemented as a single shim patch that can be dropped.
upstream was doing a containsKey/get pattern, and always doing it at that.
that scenario is only even valid if were in the middle of a block place.
Optimize to check if the captured list even has values in it, and also to
just do a get call since the value can never be null.
