this simplifies usages of safe spawns, since the caller doesn't need to know which chunks will be needed for the spawn to be selected.
We'll need this in the future, because safe spawns may also get diverted horizontally as well as vertically, which might require loading adjacent chunks as well as the chunk the position is actually in.
in vanilla, it appears to behave as if the player always clicked on the up face if a block was replaced.
In PM, we were still using the original face, which caused bugs when, for example, placing a button next to a wall by clicking on the side of tallgrass. The button would replace the tallgrass, but stick to the wall, instead of placing itself on the ground like vanilla expects.
This may appear unusual to anyone who also happens to implement canBePlacedAt(), since the facing behaviour will be different. However, this behaviour appears to match vanilla, and even slabs (which I feared might break because of this change) work perfectly.
In the future, it may be desirable to pass some other value here, such as null, to indicate that the clicked block is being replaced. However, that's a BC break and therefore outside of the scope of a stable bug fix.
This reverts commit aebcfc516ff97492c58ee478a3944915a777a75e.
this has edge cases in the handling of adjacent chunk locks which I
didn't consider at the time. Once accounting for those edge cases, it
became significantly more complex to the point that I realized this
needed more planning.
the target chunk may no longer be loaded if it was unloaded during a previous chunk's tick (e.g. during BlockGrowEvent).
Since the parent function iterates over a pre-selected array of chunks, the chunk will still be present in the list even if it's no longer loaded by the time it's reached.
this is just wasting CPU time, since the effects aren't noticeable on such a small timescale anyway.
This reduces the CPU impact of chunk selection by 95%. However, this is the lesser part of chunk ticking, and the lion's share of the performance impact still comes from actually ticking the chunks.
WARNING: This WILL have a performance impact on larger servers, but that's the price to pay for having crops actually grow.
The old overengineered method for doing this was causing glacially slow crop growth, vanilla parity issues and really just didn't make much sense. This method is probably incorrect too, but it will at least produce visible results.
Performance tests show that this has a considerable client-side performance advantage over using players. In my local tests, using 1000 floating texts in a 10x10x10 area, I observed an FPS increase from 1.5 to 8.0.
this could overflow if the explosion size is less than 1.
While this currently doesn't have any negative effects, if we decided to support >100% yield, this would cause some issues.
