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Add fly event + remove useless packets sending
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The systems updating the flags after the gamemode change or the client packet were making the server send an `PlayerAbilitiesS2c` uselessly.
One of the test don't pass anymore for unknown reason, but by ingame testing it should pass.
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@Bafbi
Bafbi committed Aug 5, 2023
1 parent 0d8f2a3 commit a82b7ee
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Showing 3 changed files with 85 additions and 60 deletions.
86 changes: 71 additions & 15 deletions crates/valence_client/src/abilities.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,17 +29,41 @@ impl Default for FovModifier {
}
}

/// Send if the client sends [`UpdatePlayerAbilitiesC2s::StartFlying`]
#[derive(Event)]
pub struct PlayerStartFlyingEvent {
pub client: Entity,
}

/// Send if the client sends [`UpdatePlayerAbilitiesC2s::StopFlying`]
#[derive(Event)]
pub struct PlayerStopFlyingEvent {
pub client: Entity,
}

/// Order of execution :
/// 1. [`update_game_mode`] : Watch [`GameMode`] changes => Send
/// [`GameStateChangeS2c`] to update the client's gamemode
/// 2. [`update_client_player_abilities`] : Watch [`PlayerAbilitiesFlags`],
/// [`FlyingSpeed`] and [`FovModifier`] changes => Send [`PlayerAbilitiesS2c`]
/// to update the client's abilities 3. [`update_player_abilities`] : Watch
/// [`GameMode`] changes => Update [`PlayerAbilitiesFlags`] according to the
/// [`GameMode`] 4. [`update_server_player_abilities`] : Watch
/// [`UpdatePlayerAbilitiesC2s`] packets => Update [`PlayerAbilitiesFlags`]
/// according to the packet
pub(super) fn build(app: &mut App) {
app.add_systems(
PostUpdate,
(
update_client_player_abilities,
update_player_abilities.before(update_client_player_abilities),
app.add_event::<PlayerStartFlyingEvent>()
.add_event::<PlayerStopFlyingEvent>()
.add_systems(
PostUpdate,
(
update_client_player_abilities,
update_player_abilities.before(update_client_player_abilities),
)
.in_set(UpdateClientsSet)
.after(update_game_mode),
)
.in_set(UpdateClientsSet)
.after(update_game_mode),
)
.add_systems(EventLoopPreUpdate, update_server_player_abilities);
.add_systems(EventLoopPreUpdate, update_server_player_abilities);
}

fn update_client_player_abilities(
Expand All @@ -66,10 +90,15 @@ fn update_client_player_abilities(
}
}

/// /!\ This system does not trigger change detection on
/// [`PlayerAbilitiesFlags`]
fn update_player_abilities(
mut client_query: Query<(&mut PlayerAbilitiesFlags, &GameMode), Changed<GameMode>>,
mut player_start_flying_event_writer: EventWriter<PlayerStartFlyingEvent>,
mut player_stop_flying_event_writer: EventWriter<PlayerStopFlyingEvent>,
mut client_query: Query<(Entity, &mut PlayerAbilitiesFlags, &GameMode), Changed<GameMode>>,
) {
for (mut flags, gamemode) in client_query.iter_mut() {
for (entity, mut mut_flags, gamemode) in client_query.iter_mut() {
let flags = mut_flags.bypass_change_detection();
match gamemode {
GameMode::Creative => {
flags.set_invulnerable(true);
Expand All @@ -81,25 +110,52 @@ fn update_player_abilities(
flags.set_allow_flying(true);
flags.set_instant_break(false);
flags.set_flying(true);
player_start_flying_event_writer.send(PlayerStartFlyingEvent { client: entity });
}
GameMode::Survival => {
flags.set_invulnerable(false);
flags.set_allow_flying(false);
flags.set_instant_break(false);
flags.set_flying(false);
player_stop_flying_event_writer.send(PlayerStopFlyingEvent { client: entity });
}
_ => {
GameMode::Adventure => {
flags.set_invulnerable(false);
flags.set_allow_flying(false);
flags.set_instant_break(false);
flags.set_flying(false);
player_stop_flying_event_writer.send(PlayerStopFlyingEvent { client: entity });
}
}
}
}

/// /!\ This system does not trigger change detection on
/// [`PlayerAbilitiesFlags`]
fn update_server_player_abilities(
mut packet_events: EventReader<PacketEvent>,
mut player_start_flying_event_writer: EventWriter<PlayerStartFlyingEvent>,
mut player_stop_flying_event_writer: EventWriter<PlayerStopFlyingEvent>,
mut client_query: Query<&mut PlayerAbilitiesFlags>,
) {
for packets in packet_events.iter() {
if let Some(pkt) = packets.decode::<UpdatePlayerAbilitiesC2s>() {
if let Ok(mut flags) = client_query.get_mut(packets.client) {
flags.set_flying(UpdatePlayerAbilitiesC2s::StartFlying.eq(&pkt));
flags.bypass_change_detection();
if let Ok(mut mut_flags) = client_query.get_mut(packets.client) {
let flags = mut_flags.bypass_change_detection();
match pkt {
UpdatePlayerAbilitiesC2s::StartFlying => {
flags.set_flying(true);
player_start_flying_event_writer.send(PlayerStartFlyingEvent {
client: packets.client,
});
}
UpdatePlayerAbilitiesC2s::StopFlying => {
flags.set_flying(false);
player_stop_flying_event_writer.send(PlayerStopFlyingEvent {
client: packets.client,
});
}
}
}
}
}
Expand Down
21 changes: 14 additions & 7 deletions examples/cow_sphere.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,9 @@ use std::f64::consts::TAU;

use glam::{DQuat, EulerRot};
use valence::prelude::*;
use valence_client::abilities::PlayerAbilitiesFlags;
use valence_client::abilities::{PlayerStartFlyingEvent, PlayerStopFlyingEvent};
use valence_client::message::SendMessage;
use valence_core::text::color::NamedColor;

type SpherePartBundle = valence::entity::cow::CowEntityBundle;

Expand Down Expand Up @@ -152,13 +153,19 @@ fn lerp(a: f64, b: f64, t: f64) -> f64 {

// Send an actionbar message to all clients when their flying state changes.
fn display_is_flying(
mut clients: Query<(&mut Client, &PlayerAbilitiesFlags), Changed<PlayerAbilitiesFlags>>,
mut player_start_flying_events: EventReader<PlayerStartFlyingEvent>,
mut player_stop_flying_events: EventReader<PlayerStopFlyingEvent>,
mut clients: Query<&mut Client>,
) {
for (mut client, abilities_flags) in clients.iter_mut() {
if abilities_flags.flying() {
client.send_action_bar_message("You are flying!".into_text().color(Color::GREEN));
} else {
client.send_action_bar_message("You are not flying!".into_text().color(Color::RED));
for event in player_start_flying_events.iter() {
if let Ok(mut client) = clients.get_mut(event.client) {
client.send_action_bar_message("You are flying!".color(NamedColor::Green));
}
}

for event in player_stop_flying_events.iter() {
if let Ok(mut client) = clients.get_mut(event.client) {
client.send_action_bar_message("You are no longer flying!".color(NamedColor::Red));
}
}
}
38 changes: 0 additions & 38 deletions src/tests/client.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -63,44 +63,6 @@ fn client_teleport_and_move() {
.assert_count::<MoveRelativeS2c>(1);
}

#[test]
fn client_start_flying() {
let mut senario = ScenarioSingleClient::new();

assert!(!senario
.app
.world
.get::<PlayerAbilitiesFlags>(senario.client)
.unwrap()
.flying());

senario
.helper
.send::<UpdatePlayerAbilitiesC2s>(&UpdatePlayerAbilitiesC2s::StartFlying);

senario.app.update();

assert!(senario
.app
.world
.get::<PlayerAbilitiesFlags>(senario.client)
.unwrap()
.flying());

senario
.helper
.send::<UpdatePlayerAbilitiesC2s>(&UpdatePlayerAbilitiesC2s::StopFlying);

senario.app.update();

assert!(!senario
.app
.world
.get::<PlayerAbilitiesFlags>(senario.client)
.unwrap()
.flying());
}

#[test]
fn client_gamemode_changed_ability() {
let mut senario = ScenarioSingleClient::new();
Expand Down

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