Add action bar support (#15)

* Action bar + conway

* Docs for action bar

* Apply suggestions

* fmt

examples/conway.rs

@@ -200,7 +200,11 @@ impl Config for Game {
                                 client.play_sound(
                                     ident!("minecraft:block.note_block.banjo"),
                                     SoundCategory::Block,
-                                    Vec3::<f64>::new(normal_position.x.into(), normal_position.y.into(), normal_position.z.into()),
+                                    Vec3::<f64>::new(
+                                        normal_position.x.into(),
+                                        normal_position.y.into(),
+                                        normal_position.z.into(),
+                                    ),
                                     0.5f32,
                                     1f32,
                                 );
@@ -232,6 +236,13 @@ impl Config for Game {
                 }
             }
 
+            // Display Playing in green or Paused in red
+            client.set_action_bar(if server.state.paused {
+                "Paused".color(Color::RED)
+            } else {
+                "Playing".color(Color::GREEN)
+            });
+
             true
         });
 

src/client.rs

@@ -33,7 +33,7 @@ use crate::protocol::packets::s2c::play::{
     DimensionTypeRegistry, DimensionTypeRegistryEntry, Disconnect, EntitiesDestroy,
     EntityAnimation, EntityAttributes, EntityAttributesProperty, EntityPosition, EntitySetHeadYaw,
     EntityStatus, EntityTrackerUpdate, EntityVelocityUpdate, GameJoin, GameMessage,
-    GameStateChange, GameStateChangeReason, KeepAlive, MoveRelative, PlaySoundId,
+    GameStateChange, GameStateChangeReason, KeepAlive, MoveRelative, OverlayMessage, PlaySoundId,
     PlayerActionResponse, PlayerPositionLook, PlayerPositionLookFlags, PlayerRespawn,
     PlayerSpawnPosition, RegistryCodec, Rotate, RotateAndMoveRelative, S2cPlayPacket,
     SoundCategory, UnloadChunk, UpdateSubtitle, UpdateTitle,
@@ -225,6 +225,7 @@ pub struct Client<C: Config> {
     dug_blocks: Vec<i32>,
     /// Should be sent after login packet.
     msgs_to_send: Vec<Text>,
+    bar_to_send: Option<Text>,
     attack_speed: f64,
     movement_speed: f64,
     bits: ClientBits,
@@ -290,6 +291,7 @@ impl<C: Config> Client<C> {
             settings: None,
             dug_blocks: Vec::new(),
             msgs_to_send: Vec::new(),
+            bar_to_send: None,
             attack_speed: 4.0,
             movement_speed: 0.7,
             bits: ClientBits::new()
@@ -506,6 +508,11 @@ impl<C: Config> Client<C> {
         }
     }
 
+    /// Sets the action bar for this client.
+    pub fn set_action_bar(&mut self, text: impl Into<Text>) {
+        self.bar_to_send = Some(text.into());
+    }
+
     /// Gets the attack cooldown speed.
     pub fn attack_speed(&self) -> f64 {
         self.attack_speed
@@ -1219,6 +1226,10 @@ impl<C: Config> Client<C> {
             );
         }
 
+        if let Some(bar) = self.bar_to_send.take() {
+            send_packet(&mut self.send, OverlayMessage { text: bar });
+        }
+
         let mut entities_to_unload = Vec::new();
 
         // Update all entities that are visible and unload entities that are no

src/protocol/packets/s2c.rs

@@ -655,6 +655,12 @@ pub mod play {
         }
     }
 
+    def_struct! {
+        OverlayMessage {
+            text: Text
+        }
+    }
+
     def_struct! {
         UpdateSelectedSlot {
             slot: BoundedInt<u8, 0, 9>,
@@ -830,6 +836,7 @@ pub mod play {
             PlayerRespawn = 62,
             EntitySetHeadYaw = 63,
             ChunkSectionUpdate = 64,
+            OverlayMessage = 67,
             UpdateSelectedSlot = 74,
             ChunkRenderDistanceCenter = 75,
             ChunkLoadDistance = 76,