This is needed for batched lighting updates to work. It also reduces the overhead involved with simply preparing a lighting update and moves the pain to the execute() instead.
PhpStorm can't see constructor usages when the class name is dynamic. This causes maintenance problems because cross-referencing constructors called like this doesn't show up dynamic calls.
Previously any random error could occur during an AsyncTask preparing a chunk, and the Level would never know about it and thus never send the chunk.
I don't know how many invisible-chunk bug cases this fixes, but I expect it's quite a lot.
I don't care if this matches PC behaviour or not. bugs.mojang.com is full of bug reports about this. Just search for "minecraft spawn protection not working" and you'll see what I mean.
If you want to disable spawn protection, actually disable it. This behaviour is something that most users are not aware of and find astonishing when they discover it.
This behaviour was copied from Minecraft PC, and it's nearly as unexpected there as it is here.
This commit reverses the stupidity done in eb0525e892.
fixes#2295
There is still an issue in that the spawn point will not be offset if the chunk is not generated, but this is better than the spawn point being down at y=0. The other issue is a job for another time.
this goes on 3.1 because it changes the behaviour of chunk cloning, which might possibly break some plugins, and this isn't a bug fix.
This should see no change in behaviour other than a minor performance improvement and slight reduction in memory usage.
If there is an empty list of blocks in the changedBlocks array for a chunk, that means that blocks changed the normal way and then were later set the direct way in the same tick. This means that no action needs to be taken on these chunks.
This changes how the AsyncPool works so that it does not immediately always start all of the workers in the pool.
Instead, workers will be started only when an idle worker was not found.
This allows for significant memory footprint reductions while idle.
In effect the async-workers setting in pocketmine.yml now dictates a _maximum_ pool size, not a fixed pool size.
