valence/examples/entity_raycast.rs

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use std::net::SocketAddr;
use std::sync::atomic::{AtomicUsize, Ordering};
use log::LevelFilter;
use uuid::Uuid;
use valence::async_trait;
use valence::block::{BlockPos, BlockState};
use valence::chunk::UnloadedChunk;
use valence::client::{handle_event_default, GameMode};
use valence::config::{Config, ServerListPing};
use valence::dimension::DimensionId;
use valence::entity::types::{Facing, PaintingKind, Pose};
use valence::entity::{EntityId, EntityKind, TrackedData};
use valence::player_list::PlayerListId;
use valence::server::{Server, SharedServer, ShutdownResult};
use valence::spatial_index::RaycastHit;
use valence::text::{Color, TextFormat};
use valence::util::from_yaw_and_pitch;
use vek::Vec3;
pub fn main() -> ShutdownResult {
env_logger::Builder::new()
.filter_module("valence", LevelFilter::Trace)
.parse_default_env()
.init();
valence::start_server(
Game {
player_count: AtomicUsize::new(0),
},
None,
)
}
struct Game {
player_count: AtomicUsize,
}
#[derive(Default)]
struct ClientState {
player: EntityId,
shulker_bullet: EntityId,
}
const MAX_PLAYERS: usize = 10;
const SPAWN_POS: BlockPos = BlockPos::new(0, 100, -5);
const PLAYER_EYE_HEIGHT: f64 = 1.62;
// TODO
// const PLAYER_SNEAKING_EYE_HEIGHT: f64 = 1.495;
#[async_trait]
impl Config for Game {
type ServerState = Option<PlayerListId>;
type ClientState = ClientState;
type EntityState = ();
type WorldState = ();
type ChunkState = ();
type PlayerListState = ();
fn max_connections(&self) -> usize {
// We want status pings to be successful even if the server is full.
MAX_PLAYERS + 64
}
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(), ());
let (player_list_id, player_list) = server.player_lists.insert(());
server.state = Some(player_list_id);
let size = 5;
for z in -size..size {
for x in -size..size {
world.chunks.insert([x, z], UnloadedChunk::default(), ());
}
}
world.chunks.set_block_state(SPAWN_POS, BlockState::BEDROCK);
// ==== Item Frames ==== //
let (_, e) = server.entities.insert(EntityKind::ItemFrame, ());
if let TrackedData::ItemFrame(i) = e.data_mut() {
i.set_rotation(Facing::North as i32);
}
e.set_world(world_id);
e.set_position([2.0, 102.0, 0.0]);
let (_, e) = server.entities.insert(EntityKind::ItemFrame, ());
if let TrackedData::ItemFrame(i) = e.data_mut() {
i.set_rotation(Facing::East as i32);
}
e.set_world(world_id);
e.set_position([3.0, 102.0, 0.0]);
let (_, e) = server.entities.insert(EntityKind::GlowItemFrame, ());
if let TrackedData::GlowItemFrame(i) = e.data_mut() {
i.set_rotation(Facing::South as i32);
}
e.set_world(world_id);
e.set_position([4.0, 102.0, 0.0]);
let (_, e) = server.entities.insert(EntityKind::GlowItemFrame, ());
if let TrackedData::GlowItemFrame(i) = e.data_mut() {
i.set_rotation(Facing::West as i32);
}
e.set_world(world_id);
e.set_position([5.0, 102.0, 0.0]);
// ==== Paintings ==== //
let (_, e) = server.entities.insert(EntityKind::Painting, ());
if let TrackedData::Painting(p) = e.data_mut() {
p.set_variant(PaintingKind::Pigscene);
}
e.set_world(world_id);
e.set_yaw(180.0);
e.set_position([0.0, 102.0, 0.0]);
let (_, e) = server.entities.insert(EntityKind::Painting, ());
if let TrackedData::Painting(p) = e.data_mut() {
p.set_variant(PaintingKind::DonkeyKong);
}
e.set_world(world_id);
e.set_yaw(90.0);
e.set_position([-4.0, 102.0, 0.0]);
let (_, e) = server.entities.insert(EntityKind::Painting, ());
if let TrackedData::Painting(p) = e.data_mut() {
p.set_variant(PaintingKind::Void);
}
e.set_world(world_id);
e.set_position([-6.0, 102.0, 0.0]);
let (_, e) = server.entities.insert(EntityKind::Painting, ());
if let TrackedData::Painting(p) = e.data_mut() {
p.set_variant(PaintingKind::Aztec);
}
e.set_yaw(270.0);
e.set_world(world_id);
e.set_position([-7.0, 102.0, 0.0]);
// ==== Shulkers ==== //
let (_, e) = server.entities.insert(EntityKind::Shulker, ());
if let TrackedData::Shulker(s) = e.data_mut() {
s.set_peek_amount(100);
s.set_attached_face(Facing::West);
}
e.set_world(world_id);
e.set_position([-4.0, 102.0, -8.0]);
let (_, e) = server.entities.insert(EntityKind::Shulker, ());
if let TrackedData::Shulker(s) = e.data_mut() {
s.set_peek_amount(75);
s.set_attached_face(Facing::Up);
}
e.set_world(world_id);
e.set_position([-1.0, 102.0, -8.0]);
let (_, e) = server.entities.insert(EntityKind::Shulker, ());
if let TrackedData::Shulker(s) = e.data_mut() {
s.set_peek_amount(50);
s.set_attached_face(Facing::Down);
}
e.set_world(world_id);
e.set_position([2.0, 102.0, -8.0]);
let (_, e) = server.entities.insert(EntityKind::Shulker, ());
if let TrackedData::Shulker(s) = e.data_mut() {
s.set_peek_amount(25);
s.set_attached_face(Facing::East);
}
e.set_world(world_id);
e.set_position([5.0, 102.0, -8.0]);
let (_, e) = server.entities.insert(EntityKind::Shulker, ());
if let TrackedData::Shulker(s) = e.data_mut() {
s.set_peek_amount(0);
s.set_attached_face(Facing::North);
}
e.set_world(world_id);
e.set_position([8.0, 102.0, -8.0]);
// ==== Slimes ==== //
let (_, e) = server.entities.insert(EntityKind::Slime, ());
if let TrackedData::Slime(s) = e.data_mut() {
s.set_slime_size(30);
}
e.set_world(world_id);
e.set_yaw(180.0);
e.set_head_yaw(180.0);
e.set_position([12.0, 102.0, 10.0]);
let (_, e) = server.entities.insert(EntityKind::MagmaCube, ());
if let TrackedData::MagmaCube(m) = e.data_mut() {
m.set_slime_size(30);
}
e.set_world(world_id);
e.set_yaw(180.0);
e.set_head_yaw(180.0);
e.set_position([-12.0, 102.0, 10.0]);
// ==== Sheep ==== //
let (_, e) = server.entities.insert(EntityKind::Sheep, ());
if let TrackedData::Sheep(s) = e.data_mut() {
s.set_color(6);
s.set_child(true);
}
e.set_world(world_id);
e.set_position([-5.0, 101.0, -4.5]);
e.set_yaw(270.0);
e.set_head_yaw(270.0);
let (_, e) = server.entities.insert(EntityKind::Sheep, ());
if let TrackedData::Sheep(s) = e.data_mut() {
s.set_color(6);
}
e.set_world(world_id);
e.set_position([5.0, 101.0, -4.5]);
e.set_yaw(90.0);
e.set_head_yaw(90.0);
// ==== Players ==== //
let player_poses = [
Pose::Standing,
Pose::Sneaking,
Pose::FallFlying,
Pose::Sleeping,
Pose::Swimming,
Pose::SpinAttack,
Pose::Dying,
];
for (i, pose) in player_poses.into_iter().enumerate() {
player_list.insert(
Uuid::from_u128(i as u128),
format!("fake_player_{i}"),
None,
GameMode::Survival,
0,
None,
);
let (_, e) = server
.entities
.insert_with_uuid(EntityKind::Player, Uuid::from_u128(i as u128), ())
.unwrap();
if let TrackedData::Player(p) = e.data_mut() {
p.set_pose(pose);
}
e.set_world(world_id);
e.set_position([-3.0 + i as f64 * 2.0, 104.0, -9.0]);
}
// ==== Warden ==== //
let (_, e) = server.entities.insert(EntityKind::Warden, ());
e.set_world(world_id);
e.set_position([-7.0, 102.0, -4.5]);
e.set_yaw(270.0);
e.set_head_yaw(270.0);
let (_, e) = server.entities.insert(EntityKind::Warden, ());
if let TrackedData::Warden(w) = e.data_mut() {
w.set_pose(Pose::Emerging);
}
e.set_world(world_id);
e.set_position([-7.0, 102.0, -6.5]);
e.set_yaw(270.0);
e.set_head_yaw(270.0);
// ==== Goat ==== //
let (_, e) = server.entities.insert(EntityKind::Goat, ());
e.set_world(world_id);
e.set_position([5.0, 103.0, -4.5]);
e.set_yaw(270.0);
e.set_head_yaw(90.0);
let (_, e) = server.entities.insert(EntityKind::Goat, ());
if let TrackedData::Goat(g) = e.data_mut() {
g.set_pose(Pose::LongJumping);
}
e.set_world(world_id);
e.set_position([5.0, 103.0, -3.5]);
e.set_yaw(270.0);
e.set_head_yaw(90.0);
}
fn update(&self, server: &mut Server<Self>) {
let (world_id, world) = server.worlds.iter_mut().next().unwrap();
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.player = 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.clone());
if let Some(id) = &server.state {
server.player_lists.get_mut(id).insert(
client.uuid(),
client.username(),
client.textures().cloned(),
client.game_mode(),
0,
None,
);
}
client.send_message(
"Press ".italic()
+ "F3 + B".italic().color(Color::AQUA)
+ " to show hitboxes.".italic(),
);
}
if client.is_disconnected() {
self.player_count.fetch_sub(1, Ordering::SeqCst);
if let Some(id) = &server.state {
server.player_lists.get_mut(id).remove(client.uuid());
}
server.entities.remove(client.state.player);
return false;
}
let client_pos = client.position();
let origin = Vec3::new(client_pos.x, client_pos.y + PLAYER_EYE_HEIGHT, client_pos.z);
let direction = from_yaw_and_pitch(client.yaw() as f64, client.pitch() as f64);
let not_self_or_bullet = |hit: &RaycastHit| {
hit.entity != client.state.player && hit.entity != client.state.shulker_bullet
};
if let Some(hit) = world
.spatial_index
.raycast(origin, direction, not_self_or_bullet)
{
let bullet =
if let Some(bullet) = server.entities.get_mut(client.state.shulker_bullet) {
bullet
} else {
let (id, bullet) = server.entities.insert(EntityKind::ShulkerBullet, ());
client.state.shulker_bullet = id;
bullet.set_world(world_id);
bullet
};
let mut hit_pos = origin + direction * hit.near;
let hitbox = bullet.hitbox();
hit_pos.y -= (hitbox.max.y - hitbox.min.y) / 2.0;
bullet.set_position(hit_pos);
client.set_action_bar("Intersection".color(Color::GREEN));
} else {
server.entities.remove(client.state.shulker_bullet);
client.set_action_bar("No Intersection".color(Color::RED));
}
while handle_event_default(
client,
server.entities.get_mut(client.state.player).unwrap(),
)
.is_some()
{}
true
});
}
}