Previously, we were using codegen to support describing a fixed set of enums.
Instead, we implement an enum() function, allowing any native PHP enum to be described.
All enums used in runtime data have been migrated to native PHP 8.1 enums in minor-next to facilitate this.
This implementation:
- is faster (in extreme cases by 40x, such as with PotionType)
- requires way less code
- does not require a build step
- is way more flexible
This fixes#5877, increasing the range of stuff that plugins are now able to do.
EnumTrait enums are not supported, as it's easier and cleaner to just support native enums. Most core EnumTrait enums have been migrated to native enums by now to facilitate this.
For blocks, we now use 'block-item state' and 'block-only state', which should be much clearer for people implementing custom stuff.
'block-item state', as the name suggests, sticks to the item when the block is acquired as an item.
'block-only state' applies only to the block and is discarded when the block is acquired as an item.
'type data' for items was also renamed, since 'type' is too ambiguous to be anything but super confusing.
