valence/examples/resource_pack.rs
Ryan Johnson 4226201fed
Replace log crate with tracing (#157)
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.
2022-11-16 18:22:44 -08:00

206 lines
6.7 KiB
Rust

use std::net::SocketAddr;
use std::sync::atomic::{AtomicUsize, Ordering};
use valence::prelude::*;
use valence_protocol::packets::c2s::play::ResourcePackC2s;
use valence_protocol::types::EntityInteraction;
pub fn main() -> ShutdownResult {
tracing_subscriber::fmt().init();
valence::start_server(
Game {
player_count: AtomicUsize::new(0),
},
ServerState {
player_list: None,
sheep_id: None,
},
)
}
struct Game {
player_count: AtomicUsize,
}
struct ServerState {
player_list: Option<PlayerListId>,
sheep_id: Option<EntityId>,
}
#[derive(Default)]
struct ClientState {
entity_id: EntityId,
}
const MAX_PLAYERS: usize = 10;
const SPAWN_POS: BlockPos = BlockPos::new(0, 100, 0);
#[async_trait]
impl Config for Game {
type ServerState = ServerState;
type ClientState = ClientState;
type EntityState = ();
type WorldState = ();
type ChunkState = ();
type PlayerListState = ();
async fn server_list_ping(
&self,
_server: &SharedServer<Self>,
_remote_addr: SocketAddr,
_protocol_version: i32,
) -> ServerListPing {
ServerListPing::Respond {
online_players: self.player_count.load(Ordering::SeqCst) as i32,
max_players: MAX_PLAYERS as i32,
player_sample: Default::default(),
description: "Hello Valence!".color(Color::AQUA),
favicon_png: Some(include_bytes!("../assets/logo-64x64.png").as_slice().into()),
}
}
fn init(&self, server: &mut Server<Self>) {
let (world_id, world) = server.worlds.insert(DimensionId::default(), ());
server.state.player_list = Some(server.player_lists.insert(()).0);
let size = 5;
for z in -size..size {
for x in -size..size {
world.chunks.insert([x, z], UnloadedChunk::default(), ());
}
}
let (sheep_id, sheep) = server.entities.insert(EntityKind::Sheep, ());
server.state.sheep_id = Some(sheep_id);
sheep.set_world(world_id);
sheep.set_position([
SPAWN_POS.x as f64 + 0.5,
SPAWN_POS.y as f64 + 4.0,
SPAWN_POS.z as f64 + 0.5,
]);
if let TrackedData::Sheep(sheep_data) = sheep.data_mut() {
sheep_data.set_custom_name("Hit me".color(Color::GREEN));
}
world.chunks.set_block_state(SPAWN_POS, BlockState::BEDROCK);
}
fn update(&self, server: &mut Server<Self>) {
let (world_id, _) = server.worlds.iter_mut().next().expect("missing world");
server.clients.retain(|_, client| {
if client.created_this_tick() {
if self
.player_count
.fetch_update(Ordering::SeqCst, Ordering::SeqCst, |count| {
(count < MAX_PLAYERS).then_some(count + 1)
})
.is_err()
{
client.disconnect("The server is full!".color(Color::RED));
return false;
}
match server
.entities
.insert_with_uuid(EntityKind::Player, client.uuid(), ())
{
Some((id, _)) => client.state.entity_id = id,
None => {
client.disconnect("Conflicting UUID");
return false;
}
}
client.spawn(world_id);
client.set_flat(true);
client.set_game_mode(GameMode::Creative);
client.teleport(
[
SPAWN_POS.x as f64 + 0.5,
SPAWN_POS.y as f64 + 1.0,
SPAWN_POS.z as f64 + 0.5,
],
0.0,
0.0,
);
client.set_player_list(server.state.player_list.clone());
if let Some(id) = &server.state.player_list {
server.player_lists.get_mut(id).insert(
client.uuid(),
client.username(),
client.textures().cloned(),
client.game_mode(),
0,
None,
);
}
set_example_pack(client);
}
if client.is_disconnected() {
self.player_count.fetch_sub(1, Ordering::SeqCst);
if let Some(id) = &server.state.player_list {
server.player_lists.get_mut(id).remove(client.uuid());
}
server.entities.remove(client.state.entity_id);
return false;
}
let player = server.entities.get_mut(client.state.entity_id).unwrap();
while let Some(event) = handle_event_default(client, player) {
match event {
ClientEvent::InteractWithEntity { id, interact, .. } => {
if interact == EntityInteraction::Attack
&& Some(id) == server.state.sheep_id
{
set_example_pack(client);
}
}
ClientEvent::ResourcePackStatusChanged(s) => {
let message = match s {
ResourcePackC2s::SuccessfullyLoaded => {
"The resource pack was successfully loaded!".color(Color::GREEN)
}
ResourcePackC2s::Declined => {
"You declined the resource pack :(".color(Color::RED)
}
ResourcePackC2s::FailedDownload => {
"The resource pack download failed.".color(Color::RED)
}
_ => continue,
};
client.send_message(message.italic());
client.send_message(
"Hit the sheep above you to prompt the resource pack again."
.color(Color::GRAY)
.italic(),
);
}
_ => (),
}
}
true
});
}
}
/// Sends the resource pack prompt.
fn set_example_pack(client: &mut Client<Game>) {
client.set_resource_pack(
"https://github.com/valence-rs/valence/raw/main/assets/example_pack.zip",
"d7c6108849fb190ec2a49f2d38b7f1f897d9ce9f",
false,
None,
);
}