closes#5032
this is evidently not an ideal solution, and something more dynamic would be preferred so that we don't have to manually register an item for every permutation.
This required the following:
- A generation task (taskA) to already be running for any chunk (chunkA)
- A chunk (chunkB) is requested for generation, and the task (taskB) to do the generation
is commenced immediately
- chunkB generation promise is aborted (e.g. due to chunk unload) and
taskB is orphaned
- chunkB is subsequently re-requested, but ends up in the generation
queue because taskB is still running
- taskA completes and drains the generation queue
- chunkB attempts to be populated a second time, but taskB has not yet
been collected, resulting in an assertion failure.
This bug has been appearing intermittently ever since PM 4.0 release.
For most users there is no obvious effect since production servers don't
have assertions enabled; however, it's unclear what kind of weird side
effects this bug may have had.
the current data management system uses case-insensitive names, so we can't allow different players with the same name in different cases to join, or we will have duplication exploits.
This typically only applies to offline servers, since Xbox Live doesn't permit reuse of a username, same case or otherwise.
closes#4965
this is a sucky solution but it works well enough for this scenario.
From my research it appears that while the client-side MovementInterpolator is active on the client and hasn't yet reached its target, any teleport sent during the lerp will get overridden by the lerp.
This appears to last 3-4 ticks (about 150-200 ms) which explains why this can be reproduced by stopping movement just before the ender pearl lands (human reaction times would make the reproduction unreliable otherwise).
Things to note:
- All entities are affected by this bug.
- MovePlayerPacket appears not to have the problem, but we can't use it because it doesn't work for non-players.
- MoveActorAbsolute and MoveActorDelta are both handled by the same code and will have the same lerping bug.
This is the cleanest solution I could come up with.
