## Description
Did an api for advancements.
Issue: https://github.com/valence-rs/valence/issues/325
Each advancement is an entity, it's children is either criteria, either
advancement.
Root advancement has no parent.
Also did an event AdvancementTabChange (listens if client changes
advancement's tab)
## Test Plan
Use an example "advancements"
## 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.
## Description
- Tweak the system schedule to be more parallel-friendly and explicit.
Dependencies between systems is clearer.
- System and resource configuration is better encapsulated in each
module by using plugins.
The schedule graph for `Main` now looks like this (using
`bevy_mod_debugdump`):
### Unresolved
- What to do about ambiguous systems? Many systems here are ambiguous
because they take `&mut Client`, but the order they write packets isn't
really important. Marking them as ambiguous explicitly with
`.ambiguous_with*` across module boundaries seems difficult and
cumbersome.
## Test Plan
Steps:
1. Run examples. Check that I didn't screw up the system order.
This PR redesigns Valence's architecture around the Bevy Entity
Component System framework (`bevy_ecs` and `bevy_app`). Along the way, a
large number of changes and improvements have been made.
- Valence is now a Bevy plugin. This allows Valence to integrate with
the wider Bevy ecosystem.
- The `Config` trait has been replaced with the plugin struct which is
much easier to configure. Async callbacks are grouped into their own
trait.
- `World` has been renamed to `Instance` to avoid confusion with
`bevy_ecs::world::World`.
- Entities, clients, player list, and inventories are all just ECS
components/resources. There is no need for us to have our own
generational arena/slotmap/etc for each one.
- Client events use Bevy's event system. Users can read events with the
`EventReader` system parameter. This also means that events are
dispatched at an earlier stage of the program where access to the full
server is available. There is a special "event loop" stage which is used
primarily to avoid the loss of ordering information between events.
- Chunks have been completely overhauled to be simpler and faster. The
distinction between loaded and unloaded chunks has been mostly
eliminated. The per-section bitset that tracked changes has been
removed, which should further reduce memory usage. More operations on
chunks are available such as removal and cloning.
- The full client's game profile is accessible rather than just the
textures.
- Replaced `vek` with `glam` for parity with Bevy.
- Basic inventory support has been added.
- Various small changes to `valence_protocol`.
- New Examples
- The terrain and anvil examples are now fully asynchronous and will not
block the main tick loop while chunks are loading.
# TODOs
- [x] Implement and dispatch client events.
- ~~[ ] Finish implementing the new entity/chunk update algorithm.~~ New
approach ended up being slower. And also broken.
- [x] [Update rust-mc-bot to
1.19.3](https://github.com/Eoghanmc22/rust-mc-bot/pull/3).
- [x] Use rust-mc-bot to test for and fix any performance regressions.
Revert to old entity/chunk update algorithm if the new one turns out to
be slower for some reason.
- [x] Make inventories an ECS component.
- [x] Make player lists an ECS ~~component~~ resource.
- [x] Expose all properties of the client's game profile.
- [x] Update the examples.
- [x] Update `valence_anvil`.
- ~~[ ] Update `valence_spatial_index` to use `glam` instead of `vek`.~~
Maybe later
- [x] Make entity events use a bitset.
- [x] Update docs.
Closes#69Closes#179Closes#53
---------
Co-authored-by: Carson McManus <dyc3@users.noreply.github.com>
Co-authored-by: AviiNL <me@avii.nl>
Co-authored-by: Danik Vitek <x3665107@gmail.com>
Co-authored-by: Snowiiii <71594357+Snowiiii@users.noreply.github.com>
Adds the `valence_anvil` crate for loading anvil worlds. It can only read blocks and biomes currently. Support for saving data is to be added later.
Co-authored-by: Ryan <ryanj00a@gmail.com>
Closes#84
# Changes
- Implemented new algorithm for tracking loaded entities and chunks.
- The client does not need to maintain a list of loaded chunks and
entities anymore, as this information can be inferred using carefully
maintained data from the previous tick.
- Chunks are used as a spatial partition for entities. Entity visibility
is now based on chunk visibility rather than the euclidean distance to
clients.
- The BVH is no longer strictly necessary, so it has been moved to the
new `valence_spatial_index` crate.
- The API has been generalized to support things other than entities.
The crate does not have a dependency on the main `valence` crate.
- Chunk, entity, and player list packets are now aggressively cached to
increase performance.
- Chunk packets now include some filler light data. This makes the
vanilla client lag a lot less.
- Entities and chunks must now be marked as deleted before they are
removed.
- Improved `ChunkPos` interface.
- Added function to get the duration per tick.
- Added `Index` and `IndexMut` impls to collection types.
As a result of the above changes, performance under heavy load has
increased significantly. With the rust-mc-bot test on my machine, I went
from a max of ~1000 players to ~4000 players.
The `tracing` crate seems to be the go-to
logging/profiling/instrumentation solution nowadays. Perhaps in the
future we could use `tracing` for profiling instead of (or in addition
to) the `perf`-based `cargo flamegraph` command. This would sidestep the
issue of `rayon` polluting the output. I conducted an initial experiment
by adding some more spans but wasn't very happy with the result.
Log messages have also been improved. There is some additional context
and events are raised when clients are added/removed from the server.
Closes#83
This PR aims to move all of Valence's networking code to the new
`valence_protocol` crate. Anything not specific to valence is going in
the new crate. It also redesigns the way packets are defined and makes a
huge number of small additions and improvements. It should be much
easier to see where code is supposed to go from now on.
`valence_protocol` is a new library which enables interactions with
Minecraft's protocol. It is completely decoupled from valence and can be
used to build new clients, servers, tools, etc.
There are two additions that will help with #5 especially:
- It is now easy to define new packets or modifications of existing
packets. Not all packets need to be bidirectional.
- The `CachedEncode` type has been created. This is used to safely cache
redundant calls to `Encode::encode`.
Closes#82Closes#43Closes#64
# Changes and Improvements
- Packet encoding/decoding happens within `Client` instead of being sent
over a channel first. This is better for performance and lays the
groundwork for #83.
- Reduce the amount of copying necessary by leveraging the `bytes` crate
and recent changes to `EncodePacket`. Performance is noticeably improved
with maximum players in the `rust-mc-bot` test going from 750 to 1050.
- Packet encoding/decoding code is decoupled from IO. This is easier to
understand and more suitable for a future protocol lib.
- Precise control over the number of bytes that are buffered for
sending/receiving. This is important for limiting maximum memory usage
correctly.
- "packet controllers" are introduced, which are convenient structures
for managing packet IO before and during the play state.
- `byte_channel` module is created to help implement the
`PlayPacketController`. This is essentially a channel of bytes
implemented with an `Arc<Mutex<BytesMut>>`.
- Error handling in the update procedure for clients was improved using
`anyhow::Result<()>` to exit as early as possible. The `client` module
is a bit cleaner as a result.
- The `LoginPlay` packet is always sent before all other play packets.
We no longer have to worry about the behavior of packets sent before
that packet. Most packet deferring performed currently can be
eliminated.
- The packet_inspector was rewritten in response to the above changes.
- Timeouts on IO operations behave better.
# Known Issues
- The packet_inspector now re-encodes packets rather than just decoding
them. This will cause problems when trying to use it with the vanilla
server because there are missing clientbound packets and other issues.
This will be fixed when the protocol module is moved to a separate
crate.
This allows packets to calculate their exact length up front.
This isn't currently tested or being used for anything, but that will come in later changes.
Adds the performance_tests/ directory.
In the future we could use our own fake client software instead of
rust-mc-bot. This would make it easier to run the tests.
valence_nbt has a much nicer API and avoids the complications brought by integrating with serde. valence_nbt also fixes some bugs and is 3x faster according to benchmarks.
Changed the `Cargo.toml` to allow full optimization of dependencies and minimally optimize the binary to allow proper testing without timeouts and errors due to overload.
Vek has been pleasant to use in practice. nalgebra is slow to compile
and its documentation is difficult to traverse. Vek also comes with its
own AABB impl, so we use that instead.
This change was made to make it easier for invariants to be upheld. When
the spatial partition is added, we can ensure that changes to entities
are immediately reflected in the partition. Additionally, chunks being
shared between worlds was a leaky abstraction to begin with and is now
removed. A method in `Config` is now necessary to determine what world a
client should join.
Along with this, most mutable references have been wrapped in a newtype
to ensure that `mem::swap` cannot be used on them, which would break
invariants. This is analogous to `Pin<&mut T>`. The reason we can't use
Pin directly is because it would require unnecessary unsafe code
within the library.
