feat: Player attacking

- Added BpmTimer.accuracy method
- Added Weapon.attack_offset method
- Replaced beats_remaining with timer in Attacking and Awaiting
- AttackArea spawning on Attacking end

src/lib.rs

@@ -37,6 +37,5 @@ pub const GROUP_ATTACK: Group = Group::GROUP_5;
 /// Temporary function to setup world
 pub fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
     commands.spawn(Player::bundle(&asset_server, Vec2::ZERO));
-    commands.spawn(BpmTimer::new(120.))
-        .observe(player::systems::on_timer_tick);
+    commands.spawn(BpmTimer::new(120.));
 }

src/player/mod.rs

@@ -90,7 +90,10 @@ impl Player {
                 // Remove NextAttack before Attacking
                 .on_enter::<states::Attacking>(|c| { c.remove::<states::NextAttack>(); } )
                 // Attacking -> Awaiting
-                .trans::<states::Attacking, _>(done(None), states::Awaiting { beats_remaining: 1 })
+                .trans_builder(
+                    done(None).ignore_and(triggers::get_timer_bpm),
+                    triggers::from_attacking_to_awaiting,
+                )
                 // Awaiting -> Free
                 .trans::<states::Awaiting, _>(done(None), states::Free)
                 // Awaiting -> Choosing

src/player/states.rs

@@ -4,7 +4,7 @@ use std::fmt::Debug;
 
 use bevy::prelude::*;
 
-use crate::{graph::action::ActionNode, input::PlayerInput, player::weapon::AttackType};
+use crate::{graph::action::ActionNode, input::PlayerInput, player::weapon::AttackType, timer::duration_from_bpm};
 
 /// Player is not doing anything special
 #[derive(Component, Clone, Copy, PartialEq, Eq, Debug, Default, Reflect)]
@@ -22,26 +22,44 @@ pub struct Choosing {
 }
 
 /// Player is acting and cannot do something else
-#[derive(Component, Clone, Copy, PartialEq, Eq, Debug, Reflect)]
+#[derive(Component, Clone, PartialEq, Debug, Reflect)]
 #[reflect(Component, Clone, PartialEq, Debug)]
 #[component(storage = "SparseSet")]
 pub struct Attacking {
     /// Which physical action was chosen
     pub phys: ActionNode<AttackType>,
-    /// How much time left before action ends
-    pub beats_remaining: u32,
+    /// Timer that awaits for attack to end
+    pub timer: Timer,
+    /// How precisely user clicked in the beat
+    pub accuracy: f32,
+}
+
+impl Attacking {
+    /// Constructs new [Attacking] from given beats and bpm
+    pub fn new(phys: ActionNode<AttackType>, accuracy: f32, beats: f32, bpm: f32) -> Self {
+        let duration = duration_from_bpm(bpm).mul_f32(beats);
+        Self { phys, timer: Timer::new(duration, TimerMode::Once), accuracy }
+    }
 }
 
 /// Next attack to be performed
-#[derive(Component, Clone, Copy, PartialEq, Eq, Debug, Reflect)]
+#[derive(Component, Clone, PartialEq, Debug, Reflect)]
 #[reflect(Component, Clone, PartialEq, Debug)]
 pub struct NextAttack(pub Attacking);
 
 /// Player is awaiting next action
-#[derive(Component, Clone, Copy, PartialEq, Eq, Debug, Default, Reflect)]
+#[derive(Component, Clone, PartialEq, Debug, Default, Reflect)]
 #[reflect(Component, Clone, PartialEq, Debug, Default)]
 #[component(storage = "SparseSet")]
 pub struct Awaiting {
-    /// How much time left before transitioning to Free
-    pub beats_remaining: u32,
+    /// Timer that awaits for next action
+    pub timer: Timer,
+}
+
+impl Awaiting {
+    /// Constructs new [Awaiting] from given beats and bpm
+    pub fn new(beats: f32, bpm: f32) -> Self {
+        let duration = duration_from_bpm(bpm).mul_f32(beats);
+        Self { timer: Timer::new(duration, TimerMode::Once) }
+    }
 }

src/player/systems.rs

@@ -1,6 +1,8 @@
 //! Player systems
 
-use crate::timer::TickEvent;
+use bevy_trait_query::One;
+
+use crate::timer::BpmTimer;
 
 use super::*;
 
@@ -17,19 +19,33 @@ pub fn handle_input(
         &mut KinematicCharacterController,
         &mut Sprite,
         Option<&mut AttackGraph>,
+        Option<One<&dyn Weapon>>,
         Option<&states::Free>,
         Option<&states::Choosing>,
-        Option<&states::Attacking>,
-        Option<&states::Awaiting>,
+        Option<&mut states::Attacking>,
+        Option<&mut states::Awaiting>,
     )>,
+
+    timer_query: Query<&BpmTimer>,
 ) {
+    let Some(timer) = timer_query.iter().next() else {
+        error!("No BpmTimer provided");
+        return;
+    };
+
+    let bpm = timer.get_bpm();
+
     for (
+        // Basic things
         player_id,
         player,
         action_state,
         mut controller,
         mut sprite,
+        // Weapon
         maybe_attack_graph,
+        maybe_weapon,
+        // States
         maybe_free,
         maybe_choosing,
         maybe_attacking,
@@ -46,18 +62,13 @@ pub fn handle_input(
         } else if let Some(states::Choosing { log }) = maybe_choosing &&
             let Some(mut attack_graph) = maybe_attack_graph {
             if let Some(next_state) = attack_graph.next(*log) {
+                let accuracy = timer.accuracy();
                 let next_attack = match *log {
                     PlayerInput::LightAttack => {
-                        states::Attacking {
-                            phys: next_state,
-                            beats_remaining: 1,
-                        }
+                        states::Attacking::new(next_state, accuracy, 1., bpm)
                     },
                     PlayerInput::HeavyAttack => {
-                        states::Attacking {
-                            phys: next_state,
-                            beats_remaining: 2,
-                        }
+                        states::Attacking::new(next_state, accuracy, 2., bpm)
                     },
                     _ => unreachable!(),
                 };
@@ -65,35 +76,28 @@ pub fn handle_input(
             } else {
                 commands.entity(player_id).insert(Done::Failure);
             }
-        } else if let Some(states::Attacking { phys, beats_remaining }) = maybe_attacking {
-            println!("{phys:#?}");
-            if *beats_remaining == 0 {
-                commands.entity(player_id).insert(Done::Success);
-            }
-        } else if let Some(states::Awaiting { beats_remaining, .. }) = maybe_awaiting {
-            if *beats_remaining == 0 {
-                commands.entity(player_id).insert(Done::Success);
-            }
-        }
-    }
-}
+        } else if let Some(mut attacking) = maybe_attacking {
+            attacking.timer.tick(time.delta());
 
-// TODO: change beats_remaining to more accurate counting
-/// Observer that updates temporal states on timer tick
-pub fn on_timer_tick(
-    _: On<TickEvent>,
-    player_query: Query<(
-        Option<&mut states::Attacking>,
-        Option<&mut states::Awaiting>,
-    ), With<Player>>
-) {
-    for (maybe_attacking, maybe_awaiting) in player_query {
-        if let Some(mut attacking) = maybe_attacking {
-            info!("attack tick");
-            attacking.beats_remaining -= 1;
+            if attacking.timer.just_finished() {
+                info!("{}", attacking.accuracy);
+                commands.entity(player_id).insert(Done::Success);
+                let Some(weapon) = maybe_weapon else {
+                    error!("No weapon provided for player");
+                    return;
+                };
+
+                if let Some(attack_area) = weapon.attack_area(attacking.phys, attacking.accuracy) {
+                    let offset = weapon.attack_offset();
+                    commands.entity(player_id)
+                        .with_child(attack_area.into_bundle(offset, sprite.flip_x, GROUP_ENEMY));
+                }
+            }
         } else if let Some(mut awaiting) = maybe_awaiting {
-            info!("await tick");
-            awaiting.beats_remaining -= 1;
+            awaiting.timer.tick(time.delta());
+            if awaiting.timer.just_finished() {
+                commands.entity(player_id).insert(Done::Success);
+            }
         }
     }
 }

src/player/triggers.rs

@@ -1,5 +1,7 @@
 //! Player state machine triggers
 
+use crate::timer::BpmTimer;
+
 use super::*;
 use super::states::*;
 
@@ -27,15 +29,25 @@ pub fn from_free_to_choosing(trans: Trans<Free, PlayerInput>) -> Choosing {
 /// Returns true if player has [NextAttack]
 pub fn attack_queued(In(player_id): In<Entity>, query: Query<&NextAttack>) -> Option<Attacking> {
     match query.get(player_id) {
-        Ok(next) => Some(next.0),
+        Ok(next) => Some(next.0.clone()),
         Err(_) => None,
     }
 }
 
 /// Transition from [Choosing] to [Attacking]
-pub fn from_choosing_to_attacking(trans: Trans<Choosing, Attacking>) -> Attacking { trans.out }
+pub fn from_choosing_to_attacking(trans: Trans<Choosing, Attacking>) -> Attacking { trans.out.clone() }
 
 /// Transition from [Awaiting] to [Choosing]
 pub fn from_awaiting_to_choosing(trans: Trans<Awaiting, PlayerInput>) -> Choosing {
     Choosing { log: trans.out }
 }
+
+/// Trigger that returns [BpmTimer]'s bpm
+pub fn get_timer_bpm(query: Query<&BpmTimer>) -> Option<f32> {
+    query.iter().next().map(|t| t.get_bpm())
+}
+
+/// Transition from [Attacking] to [Awaiting]
+pub fn from_attacking_to_awaiting(trans: Trans<Attacking, f32>) -> Awaiting {
+    Awaiting::new(2., trans.out)
+}

src/player/weapon/knife.rs

@@ -44,7 +44,7 @@ impl Weapon for Knife {
         ActionGraph::from_paths(paths)
     }
 
-    fn attack_bundle(&self, attack: ActionNode<AttackType>, accuracy: f32) -> Option<AttackArea> {
+    fn attack_area(&self, attack: ActionNode<AttackType>, accuracy: f32) -> Option<AttackArea> {
         let Some(action_type) = attack.action else {
             return None;
         };
@@ -57,27 +57,31 @@ impl Weapon for Knife {
 
         let (duration, half_area) = match action_type {
             AttackType::HorizontalSwing => {(
-                Duration::from_secs(1),
+                Duration::from_millis(500),
                 vec2(meters(0.5), meters(0.2)),
             )},
             AttackType::VerticalSwing => {(
-                Duration::from_millis(1_500),
-                vec2(meters(0.5), meters(1.)),
+                Duration::from_millis(500),
+                vec2(meters(0.5), meters(0.5)),
             )},
             AttackType::RoundSwing => {(
-                Duration::from_secs(1),
+                Duration::from_millis(500),
                 vec2(meters(0.5), meters(0.2)),
             )},
             AttackType::Stab => {(
-                Duration::from_secs(1),
+                Duration::from_millis(500),
                 vec2(meters(0.5), meters(0.1)),
             )},
             AttackType::Lunge => {(
-                Duration::from_millis(1_500),
+                Duration::from_millis(500),
                 vec2(meters(0.7), meters(0.1)),
             )},
         };
 
         Some(AttackArea::new(accuracy, damage, duration, half_area))
     }
+
+    fn attack_offset(self: &Self) -> Vec2 {
+        vec2(meters(0.5), 0.)
+    }
 }

src/player/weapon/mod.rs

@@ -30,5 +30,8 @@ pub trait Weapon {
     fn graph(self: &Self) -> ActionGraph<AttackType, PlayerInput>;
 
     /// Returns [AttackArea] for given attack
-    fn attack_bundle(self: &Self, attack: ActionNode<AttackType>, accuracy: f32) -> Option<AttackArea>;
+    fn attack_area(self: &Self, attack: ActionNode<AttackType>, accuracy: f32) -> Option<AttackArea>;
+
+    /// Returns [AttackArea] offset for this weapon
+    fn attack_offset(self: &Self) -> Vec2;
 }

src/plugin.rs

@@ -25,6 +25,7 @@ impl Plugin for GamePlugin {
         ))
         .add_systems(Startup, setup)
         .add_systems(Update, (
+            combat::attack::update_attack_areas,
             player::systems::handle_input,
             timer::update_bpm_timers,
         ))

src/timer.rs

@@ -73,6 +73,11 @@ impl BpmTimer {
         self.timer.reset();
         self.elapsed = 0.;
     }
+
+    /// Returns how close current state is to rhythm
+    pub fn accuracy(&self) -> f32 {
+        (self.timer.fraction() - 0.5).abs() * 2.
+    }
 }
 
 /// System that ticks each [BpmTimer] and triggers [TickEvent]s