Basic chat message support

examples/terrain.rs

@@ -6,7 +6,7 @@ use log::LevelFilter;
 use noise::{NoiseFn, Seedable, SuperSimplex};
 use rayon::iter::ParallelIterator;
 use valence::block::{BlockState, PropName, PropValue};
-use valence::client::GameMode;
+use valence::client::{ChatMessageType, GameMode};
 use valence::config::{Config, ServerListPing};
 use valence::text::Color;
 use valence::util::chunks_in_view_distance;
@@ -113,6 +113,8 @@ impl Config for Game {
                     0,
                     None,
                 );
+
+                client.send_message("welcome!", ChatMessageType::Chat);
             }
 
             let dist = client.view_distance();

src/client.rs

@@ -2,6 +2,7 @@
 mod event;
 use std::collections::HashSet;
 use std::iter::FusedIterator;
+use std::time::Duration;
 
 pub use event::*;
 use flume::{Receiver, Sender, TrySendError};
@@ -16,6 +17,7 @@ use crate::dimension::{Dimension, DimensionEffects};
 use crate::entity::types::Player;
 use crate::entity::{velocity_to_packet_units, EntityType};
 use crate::packets::play::c2s::{C2sPlayPacket, DiggingStatus};
+pub use crate::packets::play::s2c::ChatMessageType;
 use crate::packets::play::s2c::{
     AcknowledgeBlockChanges, Biome as BiomeRegistryBiome, BiomeAdditionsSound, BiomeEffects,
     BiomeMoodSound, BiomeMusic, BiomeParticle, BiomeParticleOptions, BiomeProperty, BiomeRegistry,
@@ -23,7 +25,8 @@ use crate::packets::play::s2c::{
     DimensionTypeRegistry, DimensionTypeRegistryEntry, Disconnect, EntityHeadLook, EntityMetadata,
     EntityPosition, EntityPositionAndRotation, EntityRotation, EntityTeleport, EntityVelocity,
     JoinGame, KeepAlive, PlayerPositionAndLook, PlayerPositionAndLookFlags, RegistryCodec,
-    S2cPlayPacket, SpawnPosition, UnloadChunk, UpdateViewDistance, UpdateViewPosition,
+    S2cPlayPacket, SpawnPosition, SystemChatMessage, UnloadChunk, UpdateViewDistance,
+    UpdateViewPosition,
 };
 use crate::player_textures::SignedPlayerTextures;
 use crate::protocol::{BoundedInt, Nbt, RawBytes};
@@ -136,6 +139,7 @@ pub struct Client {
     old_game_mode: GameMode,
     settings: Option<Settings>,
     dug_blocks: Vec<i32>,
+    msgs_to_send: Vec<(Text, ChatMessageType)>,
     /// The metadata for the client's own player entity.
     player_meta: Player,
 }
@@ -178,6 +182,7 @@ impl Client {
             old_game_mode: GameMode::Survival,
             settings: None,
             dug_blocks: Vec::new(),
+            msgs_to_send: Vec::new(),
             player_meta: Player::new(),
         }
     }
@@ -198,6 +203,10 @@ impl Client {
         self.textures.as_ref()
     }
 
+    pub fn send_message(&mut self, msg: impl Into<Text>, typ: ChatMessageType) {
+        self.msgs_to_send.push((msg.into(), typ));
+    }
+
     pub fn position(&self) -> Vec3<f64> {
         self.new_position
     }
@@ -402,7 +411,10 @@ impl Client {
             C2sPlayPacket::QueryBlockNbt(_) => {}
             C2sPlayPacket::SetDifficulty(_) => {}
             C2sPlayPacket::ChatCommand(_) => {}
-            C2sPlayPacket::ChatMessage(_) => {}
+            C2sPlayPacket::ChatMessage(p) => self.events.push(Event::ChatMessage {
+                message: p.message.0,
+                timestamp: Duration::from_millis(p.timestamp),
+            }),
             C2sPlayPacket::ChatPreview(_) => {}
             C2sPlayPacket::ClientStatus(_) => {}
             C2sPlayPacket::ClientSettings(p) => {
@@ -719,6 +731,11 @@ impl Client {
             });
         }
 
+        for (msg, typ) in self.msgs_to_send.drain(..) {
+            // TODO: wont work without proper chat registry.
+            send_packet(&mut self.send, SystemChatMessage { chat: msg, typ });
+        }
+
         let mut entities_to_unload = Vec::new();
 
         // Update all entities that are visible and unload entities that are no
@@ -824,21 +841,18 @@ impl Client {
         }
 
         // Update the client's own player metadata.
-        {
-            let mut data = Vec::new();
-            self.player_meta.updated_metadata(&mut data);
+        let mut data = Vec::new();
+        self.player_meta.updated_metadata(&mut data);
 
-            if !data.is_empty() {
-                data.push(0xff);
+        if !data.is_empty() {
+            data.push(0xff);
 
-                self.send_packet(EntityMetadata {
-                    entity_id: VarInt(0),
-                    metadata: RawBytes(data),
-                });
-            }
-
-            self.player_meta.clear_modifications();
+            self.send_packet(EntityMetadata {
+                entity_id: VarInt(0),
+                metadata: RawBytes(data),
+            });
         }
+        self.player_meta.clear_modifications();
 
         // Spawn new entities within the view distance.
         let pos = self.position();

src/client/event.rs

@@ -1,3 +1,5 @@
+use std::time::Duration;
+
 use vek::Vec3;
 
 use crate::packets::play::c2s::BlockFace;
@@ -7,6 +9,10 @@ use crate::{BlockPos, EntityId};
 
 #[derive(Debug)]
 pub enum Event {
+    ChatMessage {
+        message: String,
+        timestamp: Duration,
+    },
     /// Settings were changed. The value in this variant is the previous client
     /// settings.
     SettingsChanged(Option<Settings>),

src/packets.rs

@@ -1005,6 +1005,7 @@ pub mod play {
         }
 
         def_enum! {
+            #[derive(Copy, PartialEq, Eq)]
             ChatMessageType: VarInt {
                 Chat = 0,
                 SystemMessage = 1,
@@ -1017,6 +1018,12 @@ pub mod play {
             }
         }
 
+        impl Default for ChatMessageType {
+            fn default() -> Self {
+                ChatMessageType::Chat
+            }
+        }
+
         def_enum! {
             PlayerInfo 0x34: VarInt {
                 AddPlayer: Vec<PlayerInfoAddPlayer> = 0,
@@ -1132,6 +1139,13 @@ pub mod play {
             }
         }
 
+        def_struct! {
+            SystemChatMessage 0x5f {
+                chat: Text,
+                typ: ChatMessageType,
+            }
+        }
+
         def_struct! {
             PlayerListHeaderFooter 0x60 {
                 header: Text,
@@ -1240,6 +1254,7 @@ pub mod play {
             EntityMetadata,
             EntityVelocity,
             TimeUpdate,
+            SystemChatMessage,
             PlayerListHeaderFooter,
             EntityTeleport,
         }
@@ -1280,8 +1295,11 @@ pub mod play {
 
         def_struct! {
             ChatMessage 0x04 {
-                message: BoundedString<0, 256>
-                // TODO:
+                message: BoundedString<0, 256>,
+                timestamp: u64,
+                salt: u64,
+                signature: Vec<u8>,
+                signed_preview: bool,
             }
         }