feather-rs · Defman · Sep 6, 2021 · Jun 7, 2021 · Jun 7, 2021 · Jun 7, 2021
diff --git a/feather/common/src/entities/player.rs b/feather/common/src/entities/player.rs
@@ -2,7 +2,7 @@ use anyhow::bail;
 use base::EntityKind;
 use ecs::{EntityBuilder, SysResult};
 use quill_common::{
-    components::{CreativeFlying, Sneaking},
+    components::{CreativeFlying, Sneaking, Sprinting},
     entities::Player,
 };
 
@@ -12,6 +12,7 @@ pub fn build_default(builder: &mut EntityBuilder) {
         .add(Player)
         .add(CreativeFlying(false))
         .add(Sneaking(false))
+        .add(Sprinting(false))
         .add(EntityKind::Player);
 }
 

diff --git a/feather/server/src/packet_handlers/entity_action.rs b/feather/server/src/packet_handlers/entity_action.rs
@@ -1,7 +1,10 @@
 use common::Game;
 use ecs::{Entity, SysResult};
 use protocol::packets::client::{EntityAction, EntityActionKind};
-use quill_common::{components::Sneaking, events::SneakEvent};
+use quill_common::{
+    components::{Sneaking, Sprinting},
+    events::{SneakEvent, SprintEvent},
+};
 
 ///  From [wiki](https://wiki.vg/Protocol#Entity_Action)
 ///  Sent by the client to indicate that it has performed certain actions:
@@ -35,11 +38,14 @@ pub fn handle_entity_action(game: &mut Game, player: Entity, packet: EntityActio
             // and all players are kicked out of the bed. We have to seperatly send out
             // a notice that bed state might have changed.
         }
-        EntityActionKind::StartSprinting => {
-            //TODO issue #423
-        }
-        EntityActionKind::StopSprinting => {
-            //TODO issue #423
+        EntityActionKind::StartSprinting | EntityActionKind::StopSprinting => {
+            let start_sprinting = matches!(packet.action_id, EntityActionKind::StartSprinting);
+            let is_sprinting = game.ecs.get_mut::<Sprinting>(player)?.0;
+            if is_sprinting != start_sprinting {
+                game.ecs
+                    .insert_entity_event(player, SprintEvent::new(start_sprinting))?;
+                game.ecs.get_mut::<Sprinting>(player)?.0 = start_sprinting;
+            }
         }
         EntityActionKind::StartHorseJump => {
             //TODO issue #423

diff --git a/quill/common/src/component.rs b/quill/common/src/component.rs
@@ -188,6 +188,8 @@ host_component_enum! {
         CreativeFlyingEvent = 1010,
         Sneaking = 1011,
         SneakEvent = 1012,
+        Sprinting = 1013,
+        SprintEvent = 1014,
 
 
     }
@@ -352,3 +354,4 @@ bincode_component_impl!(BlockPlacementEvent);
 bincode_component_impl!(BlockInteractEvent);
 bincode_component_impl!(CreativeFlyingEvent);
 bincode_component_impl!(SneakEvent);
+bincode_component_impl!(SprintEvent);
diff --git a/quill/common/src/components.rs b/quill/common/src/components.rs
@@ -109,3 +109,13 @@ bincode_component_impl!(CreativeFlying);
 #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
 pub struct Sneaking(pub bool);
 bincode_component_impl!(Sneaking);
+
+/// A component on players that tracks if they are sprinting or not.
+#[derive(Copy, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
+pub struct Sprinting(pub bool);
+impl Sprinting {
+    pub fn new(value: bool) -> Self {
+        Sprinting(value)
+    }
+}
+bincode_component_impl!(Sprinting);
diff --git a/quill/common/src/events.rs b/quill/common/src/events.rs
@@ -3,5 +3,5 @@ mod change;
 mod interact_entity;
 
 pub use block_interact::{BlockInteractEvent, BlockPlacementEvent};
-pub use change::{CreativeFlyingEvent, SneakEvent};
+pub use change::{CreativeFlyingEvent, SneakEvent, SprintEvent};
 pub use interact_entity::InteractEntityEvent;
diff --git a/quill/common/src/events/change.rs b/quill/common/src/events/change.rs
@@ -29,3 +29,16 @@ impl SneakEvent {
         }
     }
 }
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct SprintEvent {
+    pub is_sprinting: bool,
+}
+
+impl SprintEvent {
+    pub fn new(changed_to: bool) -> Self {
+        Self {
+            is_sprinting: changed_to,
+        }
+    }
+}
diff --git a/quill/example-plugins/observe-creativemode-flight-event/src/lib.rs b/quill/example-plugins/observe-creativemode-flight-event/src/lib.rs
@@ -4,6 +4,7 @@ flying.
 */
 
 use quill::{
+    components::Sprinting,
     events::{CreativeFlyingEvent, SneakEvent},
     Game, Plugin, Setup,
 };
@@ -16,6 +17,7 @@ impl Plugin for FlightPlugin {
     fn enable(_game: &mut Game, setup: &mut Setup<Self>) -> Self {
         setup.add_system(flight_observer_system);
         setup.add_system(sneak_observer_system);
+        setup.add_system(sprinting_observer_system);
         FlightPlugin {}
     }
 
@@ -41,3 +43,11 @@ fn sneak_observer_system(_plugin: &mut FlightPlugin, game: &mut Game) {
         }
     }
 }
+
+fn sprinting_observer_system(_plugin: &mut FlightPlugin, game: &mut Game) {
+    for (player, sprinting) in game.query::<&Sprinting>() {
+        if sprinting.0 {
+            player.send_message("Are you sprinting?");
+        }
+    }
+}