Added delta movement packets, and also added file logging.

Author: Sweattypalms

Cargo.toml

@@ -88,7 +88,7 @@ ferrumc-anvil = { path = "src/lib/adapters/anvil" }
 ferrumc-config = { path = "src/lib/utils/config" }
 ferrumc-core = { path = "src/lib/core" }
 ferrumc-ecs = { path = "src/lib/ecs" }
-ferrumc-events = { path = "src/lib/events" }
+ferrumc-events = { path = "src/lib/events"}
 ferrumc-general-purpose = { path = "src/lib/utils/general_purpose" }
 ferrumc-logging = { path = "src/lib/utils/logging" }
 ferrumc-macros = { path = "src/lib/derive_macros" }
@@ -115,6 +115,7 @@ async-trait = "0.1.82"
 # Logging
 tracing = "0.1.40"
 tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
+tracing-appender = "0.2.3"
 log = "0.4.22"
 console-subscriber = "0.4.1"
 

src/bin/Cargo.toml

@@ -27,15 +27,14 @@ ferrumc-nbt = { workspace = true }
 ferrumc-general-purpose = { workspace = true }
 ferrumc-state = { workspace = true }
 
-ctor = { workspace = true }
 parking_lot = { workspace = true, features = ["deadlock_detection"] }
 tracing = { workspace = true }
 tokio = { workspace = true }
-rayon = { workspace = true }
 futures = { workspace = true }
-serde_json = { workspace = true }
 async-trait = { workspace = true }
 clap = { workspace = true, features = ["derive"] }
+flate2 = { workspace = true }
+ctor = { workspace = true }
 
 
 [[bin]]

src/bin/src/packet_handlers/player/see_other_players.rs renamed to src/bin/src/packet_handlers/player/head_rot.rs

@@ -1,10 +1,7 @@
-use ferrumc_core::transform::grounded::OnGround;
-use ferrumc_core::transform::position::Position;
 use ferrumc_core::transform::rotation::Rotation;
 use ferrumc_macros::event_handler;
 use ferrumc_net::errors::NetError;
 use ferrumc_net::packets::outgoing::set_head_rotation::SetHeadRotationPacket;
-use ferrumc_net::packets::outgoing::teleport_entity::TeleportEntityPacket;
 use ferrumc_net::packets::packet_events::TransformEvent;
 use ferrumc_net::utils::broadcast::{broadcast, BroadcastOptions};
 use ferrumc_net::utils::ecs_helpers::EntityExt;
@@ -18,16 +15,16 @@ async fn handle_player_move(
 ) -> Result<TransformEvent, NetError> {
     let entity = event.conn_id;
 
-    let pos = entity.get::<Position>(&state)?;
+    // let pos = entity.get::<Position>(&state)?;
     let rot = entity.get::<Rotation>(&state)?;
-    let grounded = entity.get::<OnGround>(&state)?;
+    // let grounded = entity.get::<OnGround>(&state)?;
 
-    let teleport_packet = TeleportEntityPacket::new(entity, &pos, &rot, grounded.0);
+    // let teleport_packet = TeleportEntityPacket::new(entity, &pos, &rot, grounded.0);
     let head_rot_packet =
         SetHeadRotationPacket::new(entity as i32, NetAngle::from_degrees(rot.yaw as f64));
 
     let start = std::time::Instant::now();
-    broadcast(&teleport_packet, &state, BroadcastOptions::default().all()).await?;
+    // broadcast(&teleport_packet, &state, BroadcastOptions::default().all()).await?;
     broadcast(&head_rot_packet, &state, BroadcastOptions::default().all()).await?;
 
     tracing::trace!("broadcasting entity move took {:?}", start.elapsed());

src/bin/src/packet_handlers/player/mod.rs

@@ -1,3 +1,3 @@
 pub mod do_action;
-pub mod see_other_players;
+pub mod head_rot;
 pub mod update_player_position;

src/bin/src/packet_handlers/player/update_player_position.rs

@@ -2,10 +2,17 @@ use ferrumc_core::chunks::chunk_receiver::ChunkReceiver;
 use ferrumc_core::transform::grounded::OnGround;
 use ferrumc_core::transform::position::Position;
 use ferrumc_core::transform::rotation::Rotation;
-use ferrumc_macros::event_handler;
+use ferrumc_ecs::entities::Entity;
+use ferrumc_macros::{event_handler, NetEncode};
 use ferrumc_net::errors::NetError;
+use ferrumc_net::packets::outgoing::teleport_entity::TeleportEntityPacket;
+use ferrumc_net::packets::outgoing::update_entity_position::UpdateEntityPositionPacket;
+use ferrumc_net::packets::outgoing::update_entity_position_and_rotation::UpdateEntityPositionAndRotationPacket;
+use ferrumc_net::packets::outgoing::update_entity_rotation::UpdateEntityRotationPacket;
 use ferrumc_net::packets::packet_events::TransformEvent;
+use ferrumc_net::utils::broadcast::{broadcast, BroadcastOptions};
 use ferrumc_net::utils::ecs_helpers::EntityExt;
+use ferrumc_net::NetResult;
 use ferrumc_state::GlobalState;
 use tracing::trace;
 
@@ -16,6 +23,9 @@ async fn handle_player_move(
 ) -> Result<TransformEvent, NetError> {
     let conn_id = event.conn_id;
 
+    let mut delta_pos = None::<(i16, i16, i16)>;
+    let mut new_rot = None::<Rotation>;
+
     if let Some(ref new_position) = event.position {
         trace!("Getting chunk_recv 1 for player move");
         {
@@ -45,6 +55,12 @@ async fn handle_player_move(
         let mut position = conn_id.get_mut::<Position>(&state)?;
         trace!("Got position 1 for player move");
 
+        delta_pos = Some((
+            ((new_position.x * 4096.0) - (position.x * 4096.0)) as i16,
+            ((new_position.y * 4096.0) - (position.y * 4096.0)) as i16,
+            ((new_position.z * 4096.0) - (position.z * 4096.0)) as i16,
+        ));
+
         *position = Position::new(new_position.x, new_position.y, new_position.z);
     }
 
@@ -53,7 +69,10 @@ async fn handle_player_move(
         let mut rotation = conn_id.get_mut::<Rotation>(&state)?;
         trace!("Got rotation 1 for player move");
 
-        *rotation = Rotation::new(new_rotation.yaw, new_rotation.pitch);
+        let new_rotation = Rotation::new(new_rotation.yaw, new_rotation.pitch);
+        new_rot = Some(new_rotation.clone());
+
+        *rotation = new_rotation;
     }
 
     if let Some(new_grounded) = event.on_ground {
@@ -64,5 +83,71 @@ async fn handle_player_move(
         *on_ground = OnGround(new_grounded);
     }
 
+    update_pos_for_all(conn_id, delta_pos, new_rot, &state).await?;
+
     Ok(event)
 }
+
+#[derive(NetEncode)]
+enum BroadcastMovementPacket {
+    UpdateEntityPosition(UpdateEntityPositionPacket),
+    UpdateEntityPositionAndRotation(UpdateEntityPositionAndRotationPacket),
+    UpdateEntityRotation(UpdateEntityRotationPacket),
+    TeleportEntity(TeleportEntityPacket),
+}
+
+async fn update_pos_for_all(
+    entity_id: Entity,
+    delta_pos: Option<(i16, i16, i16)>,
+    new_rot: Option<Rotation>,
+    state: &GlobalState,
+) -> NetResult<()> {
+    let is_grounded = entity_id.get::<OnGround>(state)?.0;
+
+    // If any delta of (x|y|z) exceeds 7.5, then it's "not recommended" to use this packet
+    // As docs say: "If the movement exceeds these limits, Teleport Entity should be sent instead."
+    // "should"????
+    const MAX_DELTA: i16 = (7.5 * 4096f32) as i16;
+    let delta_exceeds_threshold = match delta_pos {
+        Some((delta_x, delta_y, delta_z)) => {
+            delta_x.abs() > MAX_DELTA || delta_y.abs() > MAX_DELTA || delta_z.abs() > MAX_DELTA
+        }
+        None => false,
+    };
+
+    let packet: BroadcastMovementPacket = if delta_exceeds_threshold {
+        let pos = entity_id.get::<Position>(state)?;
+        let rot = entity_id.get::<Rotation>(state)?;
+        let grounded = entity_id.get::<OnGround>(state)?.0;
+
+        BroadcastMovementPacket::TeleportEntity(TeleportEntityPacket::new(
+            entity_id, &pos, &rot, grounded,
+        ))
+    } else {
+        match (delta_pos, new_rot) {
+            (Some(delta_pos), Some(new_rot)) => {
+                BroadcastMovementPacket::UpdateEntityPositionAndRotation(
+                    UpdateEntityPositionAndRotationPacket::new(
+                        entity_id,
+                        delta_pos,
+                        &new_rot,
+                        is_grounded,
+                    ),
+                )
+            }
+            (Some(delta_pos), None) => BroadcastMovementPacket::UpdateEntityPosition(
+                UpdateEntityPositionPacket::new(entity_id, delta_pos, is_grounded),
+            ),
+            (None, Some(new_rot)) => BroadcastMovementPacket::UpdateEntityRotation(
+                UpdateEntityRotationPacket::new(entity_id, &new_rot, is_grounded),
+            ),
+            _ => {
+                return Ok(());
+            }
+        }
+    };
+
+    broadcast(&packet, state, BroadcastOptions::default().all()).await?;
+
+    Ok(())
+}

src/lib/events/Cargo.toml

@@ -10,3 +10,4 @@ ctor = { workspace = true}
 thiserror = { workspace = true }
 futures = { workspace = true }
 dashmap = { workspace = true }
+tracing = { workspace = true }

src/lib/events/src/infrastructure.rs

@@ -73,6 +73,9 @@ pub trait Event: Sized + Send + Sync + 'static {
     ///
     /// Returns `Ok(())` if the execution succeeded. `Err(EventsError)` ifa listener failed.
     async fn trigger(event: Self::Data, state: Self::State) -> Result<(), Self::Error> {
+        #[cfg(debug_assertions)]
+        let start = std::time::Instant::now();
+
         let listeners = EVENTS_LISTENERS
             .get(Self::name())
             .expect("Failed to find event listeners. Impossible;");
@@ -96,6 +99,9 @@ pub trait Event: Sized + Send + Sync + 'static {
             })
             .await?;
 
+        #[cfg(debug_assertions)]
+        tracing::trace!("Event {} took {:?}", Self::name(), start.elapsed());
+
         Ok(())
     }
 

src/lib/net/src/packets/outgoing/mod.rs

@@ -24,5 +24,11 @@ pub mod spawn_entity;
 pub mod entity_animation;
 pub mod entity_metadata;
 pub mod player_info_update;
+
+// --------- Movement ----------
 pub mod set_head_rotation;
 pub mod teleport_entity;
+pub mod update_entity_position;
+pub mod update_entity_position_and_rotation;
+pub mod update_entity_rotation;
+// -----------------------------

src/lib/net/src/packets/outgoing/update_entity_position.rs

@@ -0,0 +1,26 @@
+use ferrumc_ecs::entities::Entity;
+use ferrumc_macros::{packet, NetEncode};
+use ferrumc_net_codec::net_types::var_int::VarInt;
+use std::io::Write;
+
+#[derive(NetEncode)]
+#[packet(packet_id = 0x2E)]
+pub struct UpdateEntityPositionPacket {
+    pub entity_id: VarInt,
+    pub delta_x: i16,
+    pub delta_y: i16,
+    pub delta_z: i16,
+    pub on_ground: bool,
+}
+
+impl UpdateEntityPositionPacket {
+    pub fn new(entity_id: Entity, delta_positions: (i16, i16, i16), on_ground: bool) -> Self {
+        Self {
+            entity_id: VarInt::new(entity_id as i32),
+            delta_x: delta_positions.0,
+            delta_y: delta_positions.1,
+            delta_z: delta_positions.2,
+            on_ground,
+        }
+    }
+}

src/lib/net/src/packets/outgoing/update_entity_position_and_rotation.rs

@@ -0,0 +1,37 @@
+use ferrumc_core::transform::rotation::Rotation;
+use ferrumc_ecs::entities::Entity;
+use ferrumc_macros::{packet, NetEncode};
+use ferrumc_net_codec::net_types::angle::NetAngle;
+use ferrumc_net_codec::net_types::var_int::VarInt;
+use std::io::Write;
+
+#[derive(NetEncode)]
+#[packet(packet_id = 0x2F)]
+pub struct UpdateEntityPositionAndRotationPacket {
+    pub entity_id: VarInt,
+    pub delta_x: i16,
+    pub delta_y: i16,
+    pub delta_z: i16,
+    pub yaw: NetAngle,
+    pub pitch: NetAngle,
+    pub on_ground: bool,
+}
+
+impl UpdateEntityPositionAndRotationPacket {
+    pub fn new(
+        entity_id: Entity,
+        delta_positions: (i16, i16, i16),
+        new_rot: &Rotation,
+        on_ground: bool,
+    ) -> Self {
+        Self {
+            entity_id: VarInt::new(entity_id as i32),
+            delta_x: delta_positions.0,
+            delta_y: delta_positions.1,
+            delta_z: delta_positions.2,
+            yaw: NetAngle::from_degrees(new_rot.yaw as f64),
+            pitch: NetAngle::from_degrees(new_rot.pitch as f64),
+            on_ground,
+        }
+    }
+}