## Description
- Reorganize `valence_nbt` and feature flag the different parts. SNBT
and binary serialization are each behind their own flags.
- Add optional serde support to `valence_nbt` behind the `serde` flag.
This is useful for end users working with `valence_nbt` and allows us to
simplify some code in `valence_biome` and `valence_dimension`.
Note that this includes a `Serializer` and `Deserializer` for `Compound`
and _not_ the binary and SNBT formats. In other words, it's not possible
to go directly from an arbitrary data format to binary NBT and vice
versa, but it _is_ possible to go to and from `Compound` and finish the
(de)serialization this way. I consider this an acceptable compromise
because writing fast and correct serialization routines for `Compound`
becomes more difficult when serde is in the way. Besides, the
intermediate `Compound` often needs to be created anyway.
- Fixed unsound uses of `std::mem::transmute` in `valence_nbt` and
elsewhere. Using `transmute` to cast between slice types is unsound
because slices are `#[repr(Rust)]` and the layouts are not guaranteed.
`slice::from_raw_parts` is used as the replacement.
## Description
- `valence` and `valence_protocol` have been divided into smaller crates
in order to parallelize the build and improve IDE responsiveness. In the
process, code architecture has been made clearer by removing circular
dependencies between modules. `valence` is now just a shell around the
other crates.
- `workspace.packages` and `workspace.dependencies` are now used. This
makes dependency managements and crate configuration much easier.
- `valence_protocol` is no more. Most things from `valence_protocol`
ended up in `valence_core`. We won't advertise `valence_core` as a
general-purpose protocol library since it contains too much
valence-specific stuff. Closes#308.
- Networking code (login, initial TCP connection handling, etc.) has
been extracted into the `valence_network` crate. The API has been
expanded and improved with better defaults. Player counts and initial
connections to the server are now tracked separately. Player counts
function by default without any user configuration.
- Some crates like `valence_anvil`, `valence_network`,
`valence_player_list`, `valence_inventory`, etc. are now optional. They
can be enabled/disabled with feature flags and `DefaultPlugins` just
like bevy.
- Whole-server unit tests have been moved to `valence/src/tests` in
order to avoid [cyclic
dev-dependencies](https://github.com/rust-lang/cargo/issues/4242).
- Tools like `valence_stresser` and `packet_inspector` have been moved
to a new `tools` directory. Renamed `valence_stresser` to `stresser`.
Closes#241.
- Moved all benches to `valence/benches/` to make them easier to run and
organize.
Ignoring transitive dependencies and `valence_core`, here's what the
dependency graph looks like now:
```mermaid
graph TD
network --> client
client --> instance
biome --> registry
dimension --> registry
instance --> biome
instance --> dimension
instance --> entity
player_list --> client
inventory --> client
anvil --> instance
entity --> block
```
### Issues
- Inventory tests inspect many private implementation details of the
inventory module, forcing us to mark things as `pub` and
`#[doc(hidden)]`. It would be ideal if the tests only looked at
observable behavior.
- Consider moving packets in `valence_core` elsewhere. `Particle` wants
to use `BlockState`, but that's defined in `valence_block`, so we can't
use it without causing cycles.
- Unsure what exactly should go in `valence::prelude`.
- This could use some more tests of course, but I'm holding off on that
until I'm confident this is the direction we want to take things.
## TODOs
- [x] Update examples.
- [x] Update benches.
- [x] Update main README.
- [x] Add short READMEs to crates.
- [x] Test new schedule to ensure behavior is the same.
- [x] Update tools.
- [x] Copy lints to all crates.
- [x] Fix docs, clippy, etc.
