if the constants had any non-stringable values, these would blow up.
this would still be fine in the sense that the tests would fail, but better that they fail gracefully if possible.
Use reflection to locate BlockTypeIds and ItemTypeIds for VanillaBlocks/VanillaItems
Since BlockTypeIds and ItemTypeIds are derived from VanillaBlocks and VanillaItems respectively anyway (they only exist to allow identifying blocks/items without having to create instances of them), this hack is probably OK, and reduces the chances of mistakes.
Previously it was explored to have these IDs generated by auto-incrementing in VanillaBlocks/Items and have the constants generated that way, but this proved to be too problematic because of unstable diffs no matter how we chose to sort the elements. See #6313 for previous research on the subject.
This is obviously not a desirable hack to keep long-term. In the future it will probably make sense to redesign VanillaBlocks like so:
enum VanillaBlocks { ... }
VanillaBlocks::STONE (the type ID)
VanillaBlocks::STONE->new() (to create a block)
However, more research is needed on this, as I'd prefer not to make block creation any more verbose.
Added the following new blocks:
- All types of Copper Bulb
- All types of Copper Door
- All types of Copper Trapdoor
- All types of Chiseled Copper
- All types of Copper Grate
we don't actually care about the specific values, only whether all the blocks and their states have been correctly registered.
I'd prefer to track all of the state data permutations, but the APIs for that are private, so tracking the number of permutations will have to suffice (this should be good enough to detect bugs anyway, and also takes way less space).
Farmland can end up scanning up to 162 blocks looking for water in the worst case. This is obviously not great for huge farms where there are thousands of blocks of the stuff.
In most farms, the water won't be moved, and nor will the farmland. This means that we can avoid this costly search on random updates.
This PR implements a cache using blockstate data (only possible in PM5) which stores an index mapping to a coordinate offset where water was previously found by this farmland block. This allows the farmland to avoid water searching entirely in most cases.
This is a colossal improvement as compared to scanning the whole 9x2x9 area every time, which, on average, scans about 40 blocks to find water if the water is at the same Y coordinate. In real terms this translates into about a 8x performance improvement for farmland (see timings below).
xxhash is generally well known for its hash key properties, so this is a suitable use case.
We XOR the state data with a partial hash of xxh3(typeID), which provides sufficient hash distribution regardless of the size of state data.
The previous method started to break down as the number of bits exceeded the number of significant bits of type ID (about 10 currently).
As well as being better for hash distribution regardless of state data size, this also reduces the load factor of RuntimeBlockRegistry to 1.08 (previously around 1.24), which is a nice bonus.
fixes#5858
technically speaking, the sideways states for non-fully-grown stems shouldn't exist, but they do in Bedrock, and changing this code to split non-fully-grown stems from fully grown ones would likely require BC breaks.
This was the minimum necessary to achieve the desired functionality.
right now, I don't see an obvious reason to do this. If it turns out I was wrong later on, we can add functionality back, but we can't remove functionality after release.
This reverts commit f64dc01bd1.
I forgot that the ItemBlock constructor implicitly strips off any states
of the origin block, which is something that we unfortunately can't do
any other way right now, since the blocks don't remember their default
states.
due to technical limitations, this requires separating them back into two different block types. However, this isn't too egregious since it's just one flag, and actually simplifies some code.
closes#5478
