fix: avoid acquiring filtered player query until movement command received

src/game.rs

@@ -7,35 +7,24 @@ use crate::error::{GameError, GameResult, TextureError};
 use crate::events::GameEvent;
 use crate::map::builder::Map;
 use crate::map::direction::Direction;
-use crate::systems;
 use crate::systems::blinking::Blinking;
+use crate::systems::{self, ghost_collision_system};
 
 use crate::systems::movement::{BufferedDirection, Position, Velocity};
 use crate::systems::profiling::SystemId;
 use crate::systems::render::RenderDirty;
 use crate::systems::{
-    audio::{audio_system, AudioEvent, AudioResource},
-    blinking::blinking_system,
-    collision::collision_system,
-    components::{
-        AudioState, Collider, DeltaTime, DirectionalAnimated, EntityType, Frozen, Ghost, GhostBundle, GhostCollider, GlobalState,
-        ItemBundle, ItemCollider, LevelTiming, PacmanCollider, PlayerBundle, PlayerControlled, PlayerStateBundle, Renderable,
-        ScoreResource, StartupSequence,
-    },
-    debug::{debug_render_system, DebugFontResource, DebugState, DebugTextureResource},
-    ghost::{ghost_collision_system, ghost_movement_system},
-    item::item_system,
-    profiling::{profile, SystemTimings},
-    render::{
-        directional_render_system, dirty_render_system, hud_render_system, ready_visibility_system, render_system,
-        BackbufferResource, MapTextureResource,
-    },
+    audio_system, blinking_system, collision_system, debug_render_system, directional_render_system, dirty_render_system,
+    ghost_movement_system, hud_render_system, item_system, profile, ready_visibility_system, render_system, AudioEvent,
+    AudioResource, AudioState, BackbufferResource, Collider, DebugFontResource, DebugState, DebugTextureResource, DeltaTime,
+    DirectionalAnimated, EntityType, Frozen, Ghost, GhostBundle, GhostCollider, GlobalState, ItemBundle, ItemCollider,
+    MapTextureResource, PacmanCollider, PlayerBundle, PlayerControlled, PlayerStateBundle, Renderable, ScoreResource,
+    StartupSequence, SystemTimings,
 };
 use crate::texture::animated::AnimatedTexture;
 use bevy_ecs::event::EventRegistry;
 use bevy_ecs::observer::Trigger;
-use bevy_ecs::prelude::SystemSet;
-use bevy_ecs::schedule::{IntoScheduleConfigs, Schedule};
+use bevy_ecs::schedule::{IntoScheduleConfigs, Schedule, SystemSet};
 use bevy_ecs::system::{NonSendMut, Res, ResMut};
 use bevy_ecs::world::World;
 use sdl2::image::LoadTexture;
@@ -238,7 +227,6 @@ impl Game {
         world.insert_resource(DebugState::default());
         world.insert_resource(AudioState::default());
         world.insert_resource(CursorPosition::default());
-        world.insert_resource(LevelTiming::for_level(1));
 
         world.add_observer(
             |event: Trigger<GameEvent>, mut state: ResMut<GlobalState>, _score: ResMut<ScoreResource>| {
@@ -249,13 +237,14 @@ impl Game {
         );
 
         let input_system = profile(SystemId::Input, systems::input::input_system);
-        let player_control_system = profile(SystemId::PlayerControls, systems::player::player_control_system);
-        let player_movement_system = profile(SystemId::PlayerMovement, systems::player::player_movement_system);
-        let startup_stage_system = profile(SystemId::Stage, systems::stage::startup_stage_system);
+        let player_control_system = profile(SystemId::PlayerControls, systems::player_control_system);
+        let player_movement_system = profile(SystemId::PlayerMovement, systems::player_movement_system);
+        let startup_stage_system = profile(SystemId::Stage, systems::startup_stage_system);
         let player_tunnel_slowdown_system = profile(SystemId::PlayerMovement, systems::player::player_tunnel_slowdown_system);
         let ghost_movement_system = profile(SystemId::Ghost, ghost_movement_system);
         let collision_system = profile(SystemId::Collision, collision_system);
         let ghost_collision_system = profile(SystemId::GhostCollision, ghost_collision_system);
+        let vulnerable_tick_system = profile(SystemId::Ghost, systems::vulnerable_tick_system);
         let item_system = profile(SystemId::Item, item_system);
         let audio_system = profile(SystemId::Audio, audio_system);
         let blinking_system = profile(SystemId::Blinking, blinking_system);
@@ -289,6 +278,7 @@ impl Game {
                 .chain(),
             player_tunnel_slowdown_system,
             ghost_movement_system,
+            vulnerable_tick_system,
             (collision_system, ghost_collision_system, item_system).chain(),
             audio_system,
             blinking_system,
@@ -304,15 +294,7 @@ impl Game {
                 .chain(),
         ));
 
-        // Initialize StartupSequence as a global resource
-        let ready_duration_ticks = {
-            let duration = world
-                .get_resource::<LevelTiming>()
-                .map(|t| t.spawn_freeze_duration)
-                .unwrap_or(1.5);
-            (duration * 60.0) as u32 // Convert to ticks at 60 FPS
-        };
-        world.insert_resource(StartupSequence::new(ready_duration_ticks, 60));
+        world.insert_resource(StartupSequence::new(60 * 3, 60));
 
         // Spawn ghosts
         Self::spawn_ghosts(&mut world)?;

src/systems/audio.rs

@@ -6,10 +6,20 @@
 
 use bevy_ecs::{
     event::{Event, EventReader, EventWriter},
+    resource::Resource,
     system::{NonSendMut, ResMut},
 };
 
-use crate::{audio::Audio, error::GameError, systems::components::AudioState};
+use crate::{audio::Audio, error::GameError};
+
+/// Resource for tracking audio state
+#[derive(Resource, Debug, Clone, Default)]
+pub struct AudioState {
+    /// Whether audio is currently muted
+    pub muted: bool,
+    /// Current sound index for cycling through eat sounds
+    pub sound_index: usize,
+}
 
 /// Events for triggering audio playback
 #[derive(Event, Debug, Clone, Copy, PartialEq, Eq)]

src/systems/collision.rs

@@ -1,13 +1,37 @@
+use bevy_ecs::component::Component;
 use bevy_ecs::entity::Entity;
-use bevy_ecs::event::EventWriter;
+use bevy_ecs::event::{EventReader, EventWriter};
 use bevy_ecs::query::With;
-use bevy_ecs::system::{Query, Res};
+use bevy_ecs::system::{Commands, Query, Res, ResMut};
 
 use crate::error::GameError;
 use crate::events::GameEvent;
 use crate::map::builder::Map;
-use crate::systems::components::{Collider, GhostCollider, ItemCollider, PacmanCollider};
 use crate::systems::movement::Position;
+use crate::systems::{AudioEvent, Ghost, PlayerControlled, ScoreResource, Vulnerable};
+
+#[derive(Component)]
+pub struct Collider {
+    pub size: f32,
+}
+
+impl Collider {
+    /// Checks if this collider collides with another collider at the given distance.
+    pub fn collides_with(&self, other_size: f32, distance: f32) -> bool {
+        let collision_distance = (self.size + other_size) / 2.0;
+        distance < collision_distance
+    }
+}
+
+/// Marker components for collision filtering optimization
+#[derive(Component)]
+pub struct PacmanCollider;
+
+#[derive(Component)]
+pub struct GhostCollider;
+
+#[derive(Component)]
+pub struct ItemCollider;
 
 /// Helper function to check collision between two entities with colliders.
 pub fn check_collision(
@@ -82,3 +106,46 @@ pub fn collision_system(
         }
     }
 }
+
+pub fn ghost_collision_system(
+    mut commands: Commands,
+    mut collision_events: EventReader<GameEvent>,
+    mut score: ResMut<ScoreResource>,
+    pacman_query: Query<(), With<PlayerControlled>>,
+    ghost_query: Query<(Entity, &Ghost), With<GhostCollider>>,
+    vulnerable_query: Query<Entity, With<Vulnerable>>,
+    mut events: EventWriter<AudioEvent>,
+) {
+    for event in collision_events.read() {
+        if let GameEvent::Collision(entity1, entity2) = event {
+            // Check if one is Pacman and the other is a ghost
+            let (_pacman_entity, ghost_entity) = if pacman_query.get(*entity1).is_ok() && ghost_query.get(*entity2).is_ok() {
+                (*entity1, *entity2)
+            } else if pacman_query.get(*entity2).is_ok() && ghost_query.get(*entity1).is_ok() {
+                (*entity2, *entity1)
+            } else {
+                continue;
+            };
+
+            // Check if the ghost is vulnerable
+            if let Ok((ghost_ent, _ghost_type)) = ghost_query.get(ghost_entity) {
+                // Check if ghost has Vulnerable component
+                if vulnerable_query.get(ghost_ent).is_ok() {
+                    // Pac-Man eats the ghost
+                    // Add score (200 points per ghost eaten)
+                    score.0 += 200;
+
+                    // Remove the ghost
+                    commands.entity(ghost_ent).despawn();
+
+                    // Play eat sound
+                    events.write(AudioEvent::PlayEat);
+                } else {
+                    // Pac-Man dies (this would need a death system)
+                    // For now, just log it
+                    tracing::warn!("Pac-Man collided with ghost while not vulnerable!");
+                }
+            }
+        }
+    }
+}

src/systems/components.rs

@@ -3,7 +3,10 @@ use bitflags::bitflags;
 
 use crate::{
     map::graph::TraversalFlags,
-    systems::movement::{BufferedDirection, Position, Velocity},
+    systems::{
+        movement::{BufferedDirection, Position, Velocity},
+        Collider, GhostCollider, ItemCollider, PacmanCollider, PlayerLifecycle,
+    },
     texture::{animated::AnimatedTexture, sprite::AtlasTile},
 };
 
@@ -109,28 +112,44 @@ bitflags! {
     }
 }
 
-#[derive(Component)]
-pub struct Collider {
-    pub size: f32,
+#[derive(Resource)]
+pub struct GlobalState {
+    pub exit: bool,
 }
 
-impl Collider {
-    /// Checks if this collider collides with another collider at the given distance.
-    pub fn collides_with(&self, other_size: f32, distance: f32) -> bool {
-        let collision_distance = (self.size + other_size) / 2.0;
-        distance < collision_distance
+#[derive(Resource)]
+pub struct ScoreResource(pub u32);
+
+#[derive(Resource)]
+pub struct DeltaTime(pub f32);
+
+/// Movement modifiers that can affect Pac-Man's speed or handling.
+#[derive(Component, Debug, Clone, Copy)]
+pub struct MovementModifiers {
+    /// Multiplier applied to base speed (e.g., tunnels)
+    pub speed_multiplier: f32,
+    /// True when currently in a tunnel slowdown region
+    pub tunnel_slowdown_active: bool,
+}
+
+impl Default for MovementModifiers {
+    fn default() -> Self {
+        Self {
+            speed_multiplier: 1.0,
+            tunnel_slowdown_active: false,
+        }
     }
 }
 
-/// Marker components for collision filtering optimization
-#[derive(Component)]
-pub struct PacmanCollider;
+/// Tag component for entities that should be frozen during startup
+#[derive(Component, Debug, Clone, Copy)]
+pub struct Frozen;
 
-#[derive(Component)]
-pub struct GhostCollider;
-
-#[derive(Component)]
-pub struct ItemCollider;
+/// Component for ghosts that are vulnerable to Pac-Man
+#[derive(Component, Debug, Clone, Copy)]
+pub struct Vulnerable {
+    pub remaining_ticks: u32,
+}
 
 #[derive(Bundle)]
 pub struct PlayerBundle {
@@ -145,6 +164,13 @@ pub struct PlayerBundle {
     pub pacman_collider: PacmanCollider,
 }
 
+/// Convenience bundle for attaching the hybrid FSM to the player entity
+#[derive(Bundle, Default)]
+pub struct PlayerStateBundle {
+    pub lifecycle: PlayerLifecycle,
+    pub movement_modifiers: MovementModifiers,
+}
+
 #[derive(Bundle)]
 pub struct ItemBundle {
     pub position: Position,
@@ -165,248 +191,3 @@ pub struct GhostBundle {
     pub collider: Collider,
     pub ghost_collider: GhostCollider,
 }
-
-#[derive(Resource)]
-pub struct GlobalState {
-    pub exit: bool,
-}
-
-#[derive(Resource)]
-pub struct ScoreResource(pub u32);
-
-#[derive(Resource)]
-pub struct DeltaTime(pub f32);
-
-/// Resource for tracking audio state
-#[derive(Resource, Debug, Clone, Default)]
-pub struct AudioState {
-    /// Whether audio is currently muted
-    pub muted: bool,
-    /// Current sound index for cycling through eat sounds
-    pub sound_index: usize,
-}
-
-/// Lifecycle state for the player entity.
-#[derive(Component, Debug, Clone, Copy, PartialEq, Eq)]
-pub enum PlayerLifecycle {
-    Spawning,
-    Alive,
-    Dying,
-    Respawning,
-}
-
-impl PlayerLifecycle {
-    /// Returns true when gameplay input and movement should be active
-    pub fn is_interactive(self) -> bool {
-        matches!(self, PlayerLifecycle::Alive)
-    }
-}
-
-impl Default for PlayerLifecycle {
-    fn default() -> Self {
-        PlayerLifecycle::Spawning
-    }
-}
-
-/// Whether player input should be processed.
-#[derive(Component, Debug, Clone, Copy, PartialEq, Eq)]
-pub enum ControlState {
-    InputEnabled,
-    InputLocked,
-}
-
-impl Default for ControlState {
-    fn default() -> Self {
-        Self::InputLocked
-    }
-}
-
-/// Combat-related state for Pac-Man. Tick-based energizer logic.
-#[derive(Component, Debug, Clone, Copy, PartialEq, Eq)]
-pub enum CombatState {
-    Normal,
-    Energized {
-        /// Remaining energizer duration in ticks (frames)
-        remaining_ticks: u32,
-        /// Ticks until flashing begins (counts down to 0, then flashing is active)
-        flash_countdown_ticks: u32,
-    },
-}
-
-impl Default for CombatState {
-    fn default() -> Self {
-        CombatState::Normal
-    }
-}
-
-impl CombatState {
-    pub fn is_energized(&self) -> bool {
-        matches!(self, CombatState::Energized { .. })
-    }
-
-    pub fn is_flashing(&self) -> bool {
-        matches!(self, CombatState::Energized { flash_countdown_ticks, .. } if *flash_countdown_ticks == 0)
-    }
-
-    pub fn deactivate_energizer(&mut self) {
-        *self = CombatState::Normal;
-    }
-
-    /// Activate energizer using tick-based durations.
-    pub fn activate_energizer_ticks(&mut self, total_ticks: u32, flash_lead_ticks: u32) {
-        let flash_countdown_ticks = total_ticks.saturating_sub(flash_lead_ticks);
-        *self = CombatState::Energized {
-            remaining_ticks: total_ticks,
-            flash_countdown_ticks,
-        };
-    }
-
-    /// Advance one frame. When ticks reach zero, returns to Normal.
-    pub fn tick_frame(&mut self) {
-        if let CombatState::Energized {
-            remaining_ticks,
-            flash_countdown_ticks,
-        } = self
-        {
-            if *remaining_ticks > 0 {
-                *remaining_ticks -= 1;
-                if *flash_countdown_ticks > 0 {
-                    *flash_countdown_ticks -= 1;
-                }
-            }
-            if *remaining_ticks == 0 {
-                *self = CombatState::Normal;
-            }
-        }
-    }
-}
-
-/// Movement modifiers that can affect Pac-Man's speed or handling.
-#[derive(Component, Debug, Clone, Copy)]
-pub struct MovementModifiers {
-    /// Multiplier applied to base speed (e.g., tunnels)
-    pub speed_multiplier: f32,
-    /// True when currently in a tunnel slowdown region
-    pub tunnel_slowdown_active: bool,
-}
-
-impl Default for MovementModifiers {
-    fn default() -> Self {
-        Self {
-            speed_multiplier: 1.0,
-            tunnel_slowdown_active: false,
-        }
-    }
-}
-
-/// Level-dependent timing configuration
-#[derive(Resource, Debug, Clone, Copy)]
-pub struct LevelTiming {
-    /// Duration of energizer effect in seconds
-    pub energizer_duration: f32,
-    /// Freeze duration at spawn/ready in seconds
-    pub spawn_freeze_duration: f32,
-    /// When to start flashing relative to energizer end (seconds)
-    pub energizer_flash_threshold: f32,
-}
-
-impl Default for LevelTiming {
-    fn default() -> Self {
-        Self {
-            energizer_duration: 6.0,
-            spawn_freeze_duration: 1.5,
-            energizer_flash_threshold: 2.0,
-        }
-    }
-}
-
-impl LevelTiming {
-    /// Returns timing configuration for a given level.
-    pub fn for_level(_level: u32) -> Self {
-        // Placeholder: tune per the Pac-Man Dossier tables
-        Self::default()
-    }
-}
-
-/// Tag component for entities that should be frozen during startup
-#[derive(Component, Debug, Clone, Copy)]
-pub struct Frozen;
-
-/// Convenience bundle for attaching the hybrid FSM to the player entity
-#[derive(Bundle, Default)]
-pub struct PlayerStateBundle {
-    pub lifecycle: PlayerLifecycle,
-    pub control: ControlState,
-    pub combat: CombatState,
-    pub movement_modifiers: MovementModifiers,
-}
-
-#[derive(Resource, Debug, Clone, Copy)]
-pub enum StartupSequence {
-    /// Stage 1: Text-only stage
-    /// - Player & ghosts are hidden
-    /// - READY! and PLAYER ONE text are shown
-    /// - Energizers do not blink
-    TextOnly {
-        /// Remaining ticks in this stage
-        remaining_ticks: u32,
-    },
-    /// Stage 2: Characters visible stage
-    /// - PLAYER ONE text is hidden, READY! text remains
-    /// - Ghosts and Pac-Man are now shown
-    CharactersVisible {
-        /// Remaining ticks in this stage
-        remaining_ticks: u32,
-    },
-    /// Stage 3: Game begins
-    /// - Final state, game is fully active
-    GameActive,
-}
-
-impl StartupSequence {
-    /// Creates a new StartupSequence with the specified duration in ticks
-    pub fn new(text_only_ticks: u32, _characters_visible_ticks: u32) -> Self {
-        Self::TextOnly {
-            remaining_ticks: text_only_ticks,
-        }
-    }
-
-    /// Returns true if the timer is still active (not in GameActive state)
-    pub fn is_active(&self) -> bool {
-        !matches!(self, StartupSequence::GameActive)
-    }
-
-    /// Returns true if we're in the game active stage
-    pub fn is_game_active(&self) -> bool {
-        matches!(self, StartupSequence::GameActive)
-    }
-
-    /// Ticks the timer by one frame, returning transition information if state changes
-    pub fn tick(&mut self) -> Option<(StartupSequence, StartupSequence)> {
-        match self {
-            StartupSequence::TextOnly { remaining_ticks } => {
-                if *remaining_ticks > 0 {
-                    *remaining_ticks -= 1;
-                    None
-                } else {
-                    let from = *self;
-                    *self = StartupSequence::CharactersVisible {
-                        remaining_ticks: 60, // 1 second at 60 FPS
-                    };
-                    Some((from, *self))
-                }
-            }
-            StartupSequence::CharactersVisible { remaining_ticks } => {
-                if *remaining_ticks > 0 {
-                    *remaining_ticks -= 1;
-                    None
-                } else {
-                    let from = *self;
-                    *self = StartupSequence::GameActive;
-                    Some((from, *self))
-                }
-            }
-            StartupSequence::GameActive => None,
-        }
-    }
-}

src/systems/debug.rs

@@ -3,12 +3,9 @@ use std::cmp::Ordering;
 
 use crate::constants::BOARD_PIXEL_OFFSET;
 use crate::map::builder::Map;
-use crate::systems::components::Collider;
-use crate::systems::input::CursorPosition;
-use crate::systems::movement::Position;
-use crate::systems::profiling::SystemTimings;
-use crate::systems::render::BackbufferResource;
-use bevy_ecs::prelude::*;
+use crate::systems::{BackbufferResource, Collider, CursorPosition, Position, SystemTimings};
+use bevy_ecs::resource::Resource;
+use bevy_ecs::system::{NonSendMut, Query, Res};
 use glam::{IVec2, UVec2, Vec2};
 use sdl2::pixels::Color;
 use sdl2::rect::{Point, Rect};

src/systems/formatting.rs

@@ -1,107 +0,0 @@
-use num_width::NumberWidth;
-use smallvec::SmallVec;
-use std::time::Duration;
-use strum::EnumCount;
-
-use crate::systems::profiling::SystemId;
-
-// Helper to split a duration into a integer, decimal, and unit
-fn get_value(duration: &Duration) -> (u64, u32, &'static str) {
-    let (int, decimal, unit) = match duration {
-        // if greater than 1 second, return as seconds
-        n if n >= &Duration::from_secs(1) => {
-            let secs = n.as_secs();
-            let decimal = n.as_millis() as u64 % 1000;
-            (secs, decimal as u32, "s")
-        }
-        // if greater than 1 millisecond, return as milliseconds
-        n if n >= &Duration::from_millis(1) => {
-            let ms = n.as_millis() as u64;
-            let decimal = n.as_micros() as u64 % 1000;
-            (ms, decimal as u32, "ms")
-        }
-        // if greater than 1 microsecond, return as microseconds
-        n if n >= &Duration::from_micros(1) => {
-            let us = n.as_micros() as u64;
-            let decimal = n.as_nanos() as u64 % 1000;
-            (us, decimal as u32, "µs")
-        }
-        // otherwise, return as nanoseconds
-        n => {
-            let ns = n.as_nanos() as u64;
-            (ns, 0, "ns")
-        }
-    };
-
-    (int, decimal, unit)
-}
-
-/// Formats timing data into a vector of strings with proper alignment
-pub fn format_timing_display(
-    timing_data: impl IntoIterator<Item = (String, Duration, Duration)>,
-) -> SmallVec<[String; SystemId::COUNT]> {
-    let mut iter = timing_data.into_iter().peekable();
-    if iter.peek().is_none() {
-        return SmallVec::new();
-    }
-
-    struct Entry {
-        name: String,
-        avg_int: u64,
-        avg_decimal: u32,
-        avg_unit: &'static str,
-        std_int: u64,
-        std_decimal: u32,
-        std_unit: &'static str,
-    }
-
-    let entries = iter
-        .map(|(name, avg, std_dev)| {
-            let (avg_int, avg_decimal, avg_unit) = get_value(&avg);
-            let (std_int, std_decimal, std_unit) = get_value(&std_dev);
-
-            Entry {
-                name: name.clone(),
-                avg_int,
-                avg_decimal,
-                avg_unit,
-                std_int,
-                std_decimal,
-                std_unit,
-            }
-        })
-        .collect::<SmallVec<[Entry; 12]>>();
-
-    let (max_name_width, max_avg_int_width, max_avg_decimal_width, max_std_int_width, max_std_decimal_width) = entries
-        .iter()
-        .fold((0, 0, 3, 0, 3), |(name_w, avg_int_w, avg_dec_w, std_int_w, std_dec_w), e| {
-            (
-                name_w.max(e.name.len()),
-                avg_int_w.max(e.avg_int.width() as usize),
-                avg_dec_w.max(e.avg_decimal.width() as usize),
-                std_int_w.max(e.std_int.width() as usize),
-                std_dec_w.max(e.std_decimal.width() as usize),
-            )
-        });
-
-    entries.iter().map(|e| {
-            format!(
-                "{name:max_name_width$} : {avg_int:max_avg_int_width$}.{avg_decimal:<max_avg_decimal_width$}{avg_unit} ± {std_int:max_std_int_width$}.{std_decimal:<max_std_decimal_width$}{std_unit}",
-                // Content
-                name = e.name,
-                avg_int = e.avg_int,
-                avg_decimal = e.avg_decimal,
-                std_int = e.std_int,
-                std_decimal = e.std_decimal,
-                // Units
-                avg_unit = e.avg_unit,
-                std_unit = e.std_unit,
-                // Padding
-                max_name_width = max_name_width,
-                max_avg_int_width = max_avg_int_width,
-                max_avg_decimal_width = max_avg_decimal_width,
-                max_std_int_width = max_std_int_width,
-                max_std_decimal_width = max_std_decimal_width
-            )
-        }).collect::<SmallVec<[String; SystemId::COUNT]>>()
-}

src/systems/ghost.rs

@@ -1,15 +1,4 @@
-use bevy_ecs::entity::Entity;
-use bevy_ecs::event::{EventReader, EventWriter};
-use bevy_ecs::query::{With, Without};
-use bevy_ecs::system::{Commands, Query, Res, ResMut};
-use rand::rngs::SmallRng;
-use rand::seq::IndexedRandom;
-use rand::SeedableRng;
-use smallvec::SmallVec;
-
-use crate::events::GameEvent;
-use crate::systems::audio::AudioEvent;
-use crate::systems::components::{Frozen, GhostCollider, ScoreResource};
+use crate::systems::components::Frozen;
 use crate::{
     map::{
         builder::Map,
@@ -17,10 +6,16 @@ use crate::{
         graph::{Edge, TraversalFlags},
     },
     systems::{
-        components::{CombatState, DeltaTime, Ghost, PlayerControlled},
+        components::{DeltaTime, Ghost},
         movement::{Position, Velocity},
     },
 };
+use bevy_ecs::query::Without;
+use bevy_ecs::system::{Query, Res};
+use rand::rngs::SmallRng;
+use rand::seq::IndexedRandom;
+use rand::SeedableRng;
+use smallvec::SmallVec;
 
 /// Autonomous ghost AI system implementing randomized movement with backtracking avoidance.
 pub fn ghost_movement_system(
@@ -73,46 +68,3 @@ pub fn ghost_movement_system(
         }
     }
 }
-
-pub fn ghost_collision_system(
-    mut commands: Commands,
-    mut collision_events: EventReader<GameEvent>,
-    mut score: ResMut<ScoreResource>,
-    pacman_query: Query<&CombatState, With<PlayerControlled>>,
-    ghost_query: Query<(Entity, &Ghost), With<GhostCollider>>,
-    mut events: EventWriter<AudioEvent>,
-) {
-    for event in collision_events.read() {
-        if let GameEvent::Collision(entity1, entity2) = event {
-            // Check if one is Pacman and the other is a ghost
-            let (pacman_entity, ghost_entity) = if pacman_query.get(*entity1).is_ok() && ghost_query.get(*entity2).is_ok() {
-                (*entity1, *entity2)
-            } else if pacman_query.get(*entity2).is_ok() && ghost_query.get(*entity1).is_ok() {
-                (*entity2, *entity1)
-            } else {
-                continue;
-            };
-
-            // Check if Pac-Man is energized
-            if let Ok(combat_state) = pacman_query.get(pacman_entity) {
-                if combat_state.is_energized() {
-                    // Pac-Man eats the ghost
-                    if let Ok((ghost_ent, _ghost_type)) = ghost_query.get(ghost_entity) {
-                        // Add score (200 points per ghost eaten)
-                        score.0 += 200;
-
-                        // Remove the ghost
-                        commands.entity(ghost_ent).despawn();
-
-                        // Play eat sound
-                        events.write(AudioEvent::PlayEat);
-                    }
-                } else {
-                    // Pac-Man dies (this would need a death system)
-                    // For now, just log it
-                    tracing::warn!("Pac-Man collided with ghost while not energized!");
-                }
-            }
-        }
-    }
-}

src/systems/item.rs

@@ -1,11 +1,13 @@
-use bevy_ecs::{event::EventReader, prelude::*, query::With, system::Query};
+use bevy_ecs::{
+    entity::Entity,
+    event::{EventReader, EventWriter},
+    query::With,
+    system::{Commands, Query, ResMut},
+};
 
 use crate::{
     events::GameEvent,
-    systems::{
-        audio::AudioEvent,
-        components::{CombatState, EntityType, ItemCollider, LevelTiming, PacmanCollider, ScoreResource},
-    },
+    systems::{AudioEvent, EntityType, GhostCollider, ItemCollider, PacmanCollider, ScoreResource, Vulnerable},
 };
 
 /// Determines if a collision between two entity types should be handled by the item system.
@@ -24,10 +26,9 @@ pub fn item_system(
     mut collision_events: EventReader<GameEvent>,
     mut score: ResMut<ScoreResource>,
     pacman_query: Query<Entity, With<PacmanCollider>>,
-    mut combat_q: Query<&mut CombatState, With<PacmanCollider>>,
     item_query: Query<(Entity, &EntityType), With<ItemCollider>>,
+    ghost_query: Query<Entity, With<GhostCollider>>,
     mut events: EventWriter<AudioEvent>,
-    level_timing: Res<LevelTiming>,
 ) {
     for event in collision_events.read() {
         if let GameEvent::Collision(entity1, entity2) = event {
@@ -53,16 +54,16 @@ pub fn item_system(
                         events.write(AudioEvent::PlayEat);
                     }
 
-                    // Activate energizer on power pellet using tick-based durations
+                    // Make ghosts vulnerable when power pellet is collected
                     if *entity_type == EntityType::PowerPellet {
-                        if let Ok(mut combat) = combat_q.single_mut() {
-                            // Convert seconds to frames (assumes 60 FPS)
-                            let total_ticks = (level_timing.energizer_duration * 60.0).round().clamp(0.0, u32::MAX as f32) as u32;
-                            // Flash lead: e.g., 3 seconds (180 ticks) before end; ensure it doesn't underflow
-                            let flash_lead_ticks = (level_timing.energizer_flash_threshold * 60.0)
-                                .round()
-                                .clamp(0.0, u32::MAX as f32) as u32;
-                            combat.activate_energizer_ticks(total_ticks, flash_lead_ticks);
+                        // Convert seconds to frames (assumes 60 FPS)
+                        let total_ticks = 60 * 5;
+
+                        // Add Vulnerable component to all ghosts
+                        for ghost_entity in ghost_query.iter() {
+                            commands.entity(ghost_entity).insert(Vulnerable {
+                                remaining_ticks: total_ticks,
+                            });
                         }
                     }
                 }

src/systems/mod.rs

@@ -8,7 +8,6 @@ pub mod blinking;
 pub mod collision;
 pub mod components;
 pub mod debug;
-pub mod formatting;
 pub mod ghost;
 pub mod input;
 pub mod item;
@@ -17,3 +16,19 @@ pub mod player;
 pub mod profiling;
 pub mod render;
 pub mod stage;
+pub mod vulnerable;
+
+pub use self::audio::*;
+pub use self::blinking::*;
+pub use self::collision::*;
+pub use self::components::*;
+pub use self::debug::*;
+pub use self::ghost::*;
+pub use self::input::*;
+pub use self::item::*;
+pub use self::movement::*;
+pub use self::player::*;
+pub use self::profiling::*;
+pub use self::render::*;
+pub use self::stage::*;
+pub use self::vulnerable::*;

src/systems/player.rs

@@ -1,26 +1,49 @@
 use bevy_ecs::{
-    entity::Entity,
+    component::Component,
     event::{EventReader, EventWriter},
-    prelude::{Commands, ResMut},
-    query::With,
-    system::{Query, Res},
+    query::{With, Without},
+    system::{Query, Res, ResMut},
 };
 
 use crate::{
     error::GameError,
     events::{GameCommand, GameEvent},
-    map::builder::Map,
-    map::graph::Edge,
+    map::{builder::Map, graph::Edge},
     systems::{
-        components::{
-            AudioState, ControlState, DeltaTime, EntityType, Frozen, GhostCollider, GlobalState, MovementModifiers,
-            PlayerControlled, PlayerLifecycle, StartupSequence,
-        },
+        components::{DeltaTime, EntityType, Frozen, GlobalState, MovementModifiers, PlayerControlled},
         debug::DebugState,
         movement::{BufferedDirection, Position, Velocity},
+        AudioState,
     },
 };
 
+/// Lifecycle state for the player entity.
+#[derive(Component, Debug, Clone, Copy, PartialEq, Eq)]
+pub enum PlayerLifecycle {
+    Spawning,
+    Alive,
+    Dying,
+    Respawning,
+}
+
+impl PlayerLifecycle {
+    /// Returns true when gameplay input and movement should be active
+    pub fn is_interactive(self) -> bool {
+        matches!(self, PlayerLifecycle::Alive)
+    }
+}
+
+impl Default for PlayerLifecycle {
+    fn default() -> Self {
+        PlayerLifecycle::Spawning
+    }
+}
+
+pub fn can_traverse(entity_type: EntityType, edge: Edge) -> bool {
+    let entity_flags = entity_type.traversal_flags();
+    edge.traversal_flags.contains(entity_flags)
+}
+
 /// Processes player input commands and updates game state accordingly.
 ///
 /// Handles keyboard-driven commands like movement direction changes, debug mode
@@ -32,35 +55,30 @@ pub fn player_control_system(
     mut state: ResMut<GlobalState>,
     mut debug_state: ResMut<DebugState>,
     mut audio_state: ResMut<AudioState>,
-    mut players: Query<(&PlayerLifecycle, &ControlState, &mut BufferedDirection), With<PlayerControlled>>,
+    mut players: Query<&mut BufferedDirection, (With<PlayerControlled>, Without<Frozen>)>,
     mut errors: EventWriter<GameError>,
 ) {
-    // Get the player's movable component (ensuring there is only one player)
-    let (lifecycle, control, mut buffered_direction) = match players.single_mut() {
-        Ok(tuple) => tuple,
-        Err(e) => {
-            errors.write(GameError::InvalidState(format!(
-                "No/multiple entities queried for player system: {}",
-                e
-            )));
-            return;
-        }
-    };
-
-    // If the player is not interactive or input is locked, ignore movement commands
-    let allow_input = lifecycle.is_interactive() && matches!(control, ControlState::InputEnabled);
-
     // Handle events
     for event in events.read() {
         if let GameEvent::Command(command) = event {
             match command {
                 GameCommand::MovePlayer(direction) => {
-                    if allow_input {
-                        *buffered_direction = BufferedDirection::Some {
-                            direction: *direction,
-                            remaining_time: 0.25,
-                        };
-                    }
+                    // Get the player's movable component (ensuring there is only one player)
+                    let (mut buffered_direction) = match players.single_mut() {
+                        Ok(tuple) => tuple,
+                        Err(e) => {
+                            errors.write(GameError::InvalidState(format!(
+                                "No/multiple entities queried for player system: {}",
+                                e
+                            )));
+                            return;
+                        }
+                    };
+
+                    *buffered_direction = BufferedDirection::Some {
+                        direction: *direction,
+                        remaining_time: 0.25,
+                    };
                 }
                 GameCommand::Exit => {
                     state.exit = true;
@@ -78,11 +96,6 @@ pub fn player_control_system(
     }
 }
 
-pub fn can_traverse(entity_type: EntityType, edge: Edge) -> bool {
-    let entity_flags = entity_type.traversal_flags();
-    edge.traversal_flags.contains(entity_flags)
-}
-
 /// Executes frame-by-frame movement for Pac-Man.
 ///
 /// Handles movement logic including buffered direction changes, edge traversal validation, and continuous movement between nodes.
@@ -94,21 +107,16 @@ pub fn player_movement_system(
     mut entities: Query<
         (
             &PlayerLifecycle,
-            &ControlState,
             &MovementModifiers,
             &mut Position,
             &mut Velocity,
             &mut BufferedDirection,
         ),
-        With<PlayerControlled>,
+        (With<PlayerControlled>, Without<Frozen>),
     >,
     // mut errors: EventWriter<GameError>,
 ) {
-    for (lifecycle, control, modifiers, mut position, mut velocity, mut buffered_direction) in entities.iter_mut() {
-        if !lifecycle.is_interactive() || !matches!(control, ControlState::InputEnabled) {
-            continue;
-        }
-
+    for (lifecycle, modifiers, mut position, mut velocity, mut buffered_direction) in entities.iter_mut() {
         // Decrement the buffered direction remaining time
         if let BufferedDirection::Some {
             direction,

src/systems/profiling.rs

@@ -1,7 +1,8 @@
-use bevy_ecs::prelude::Resource;
-use bevy_ecs::system::{IntoSystem, System};
+use bevy_ecs::system::IntoSystem;
+use bevy_ecs::{resource::Resource, system::System};
 use circular_buffer::CircularBuffer;
 use micromap::Map;
+use num_width::NumberWidth;
 use parking_lot::{Mutex, RwLock};
 use smallvec::SmallVec;
 use std::fmt::Display;
@@ -10,8 +11,6 @@ use strum::EnumCount;
 use strum_macros::{EnumCount, IntoStaticStr};
 use thousands::Separable;
 
-use crate::systems::formatting;
-
 /// The maximum number of systems that can be profiled. Must not be exceeded, or it will panic.
 const MAX_SYSTEMS: usize = SystemId::COUNT;
 /// The number of durations to keep in the circular buffer.
@@ -159,7 +158,7 @@ impl SystemTimings {
         }
 
         // Use the formatting module to format the data
-        formatting::format_timing_display(timing_data)
+        format_timing_display(timing_data)
     }
 }
 
@@ -184,3 +183,104 @@ where
         }
     }
 }
+
+// Helper to split a duration into a integer, decimal, and unit
+fn get_value(duration: &Duration) -> (u64, u32, &'static str) {
+    let (int, decimal, unit) = match duration {
+        // if greater than 1 second, return as seconds
+        n if n >= &Duration::from_secs(1) => {
+            let secs = n.as_secs();
+            let decimal = n.as_millis() as u64 % 1000;
+            (secs, decimal as u32, "s")
+        }
+        // if greater than 1 millisecond, return as milliseconds
+        n if n >= &Duration::from_millis(1) => {
+            let ms = n.as_millis() as u64;
+            let decimal = n.as_micros() as u64 % 1000;
+            (ms, decimal as u32, "ms")
+        }
+        // if greater than 1 microsecond, return as microseconds
+        n if n >= &Duration::from_micros(1) => {
+            let us = n.as_micros() as u64;
+            let decimal = n.as_nanos() as u64 % 1000;
+            (us, decimal as u32, "µs")
+        }
+        // otherwise, return as nanoseconds
+        n => {
+            let ns = n.as_nanos() as u64;
+            (ns, 0, "ns")
+        }
+    };
+
+    (int, decimal, unit)
+}
+
+/// Formats timing data into a vector of strings with proper alignment
+pub fn format_timing_display(
+    timing_data: impl IntoIterator<Item = (String, Duration, Duration)>,
+) -> SmallVec<[String; SystemId::COUNT]> {
+    let mut iter = timing_data.into_iter().peekable();
+    if iter.peek().is_none() {
+        return SmallVec::new();
+    }
+
+    struct Entry {
+        name: String,
+        avg_int: u64,
+        avg_decimal: u32,
+        avg_unit: &'static str,
+        std_int: u64,
+        std_decimal: u32,
+        std_unit: &'static str,
+    }
+
+    let entries = iter
+        .map(|(name, avg, std_dev)| {
+            let (avg_int, avg_decimal, avg_unit) = get_value(&avg);
+            let (std_int, std_decimal, std_unit) = get_value(&std_dev);
+
+            Entry {
+                name: name.clone(),
+                avg_int,
+                avg_decimal,
+                avg_unit,
+                std_int,
+                std_decimal,
+                std_unit,
+            }
+        })
+        .collect::<SmallVec<[Entry; 12]>>();
+
+    let (max_name_width, max_avg_int_width, max_avg_decimal_width, max_std_int_width, max_std_decimal_width) = entries
+        .iter()
+        .fold((0, 0, 3, 0, 3), |(name_w, avg_int_w, avg_dec_w, std_int_w, std_dec_w), e| {
+            (
+                name_w.max(e.name.len()),
+                avg_int_w.max(e.avg_int.width() as usize),
+                avg_dec_w.max(e.avg_decimal.width() as usize),
+                std_int_w.max(e.std_int.width() as usize),
+                std_dec_w.max(e.std_decimal.width() as usize),
+            )
+        });
+
+    entries.iter().map(|e| {
+            format!(
+                "{name:max_name_width$} : {avg_int:max_avg_int_width$}.{avg_decimal:<max_avg_decimal_width$}{avg_unit} ± {std_int:max_std_int_width$}.{std_decimal:<max_std_decimal_width$}{std_unit}",
+                // Content
+                name = e.name,
+                avg_int = e.avg_int,
+                avg_decimal = e.avg_decimal,
+                std_int = e.std_int,
+                std_decimal = e.std_decimal,
+                // Units
+                avg_unit = e.avg_unit,
+                std_unit = e.std_unit,
+                // Padding
+                max_name_width = max_name_width,
+                max_avg_int_width = max_avg_int_width,
+                max_avg_decimal_width = max_avg_decimal_width,
+                max_std_int_width = max_std_int_width,
+                max_std_decimal_width = max_std_decimal_width
+            )
+        }).collect::<SmallVec<[String; SystemId::COUNT]>>()
+}

src/systems/render.rs

@@ -1,16 +1,16 @@
 use crate::constants::CANVAS_SIZE;
 use crate::error::{GameError, TextureError};
 use crate::map::builder::Map;
-use crate::systems::blinking::Blinking;
-use crate::systems::components::{
-    DeltaTime, DirectionalAnimated, EntityType, GhostCollider, PlayerControlled, Renderable, ScoreResource, StartupSequence,
+use crate::systems::{
+    Blinking, DeltaTime, DirectionalAnimated, EntityType, GhostCollider, PlayerControlled, Position, Renderable, ScoreResource,
+    StartupSequence, Velocity,
 };
-use crate::systems::movement::{Position, Velocity};
 use crate::texture::sprite::SpriteAtlas;
 use crate::texture::text::TextTexture;
 use bevy_ecs::entity::Entity;
 use bevy_ecs::event::EventWriter;
-use bevy_ecs::prelude::{Changed, Or, RemovedComponents, With, Without};
+use bevy_ecs::query::{Changed, Or, With, Without};
+use bevy_ecs::removal_detection::RemovedComponents;
 use bevy_ecs::resource::Resource;
 use bevy_ecs::system::{NonSendMut, Query, Res, ResMut};
 use sdl2::pixels::Color;

src/systems/stage.rs

@@ -1,9 +1,71 @@
 use bevy_ecs::{
-    prelude::{Commands, Entity, Query, With},
-    system::ResMut,
+    entity::Entity,
+    query::With,
+    resource::Resource,
+    system::{Commands, Query, ResMut},
 };
 
-use crate::systems::components::{Frozen, GhostCollider, PlayerControlled, StartupSequence};
+use crate::systems::{Frozen, GhostCollider, PlayerControlled};
+
+#[derive(Resource, Debug, Clone, Copy)]
+pub enum StartupSequence {
+    /// Stage 1: Text-only stage
+    /// - Player & ghosts are hidden
+    /// - READY! and PLAYER ONE text are shown
+    /// - Energizers do not blink
+    TextOnly {
+        /// Remaining ticks in this stage
+        remaining_ticks: u32,
+    },
+    /// Stage 2: Characters visible stage
+    /// - PLAYER ONE text is hidden, READY! text remains
+    /// - Ghosts and Pac-Man are now shown
+    CharactersVisible {
+        /// Remaining ticks in this stage
+        remaining_ticks: u32,
+    },
+    /// Stage 3: Game begins
+    /// - Final state, game is fully active
+    GameActive,
+}
+
+impl StartupSequence {
+    /// Creates a new StartupSequence with the specified duration in ticks
+    pub fn new(text_only_ticks: u32, _characters_visible_ticks: u32) -> Self {
+        Self::TextOnly {
+            remaining_ticks: text_only_ticks,
+        }
+    }
+
+    /// Ticks the timer by one frame, returning transition information if state changes
+    pub fn tick(&mut self) -> Option<(StartupSequence, StartupSequence)> {
+        match self {
+            StartupSequence::TextOnly { remaining_ticks } => {
+                if *remaining_ticks > 0 {
+                    *remaining_ticks -= 1;
+                    None
+                } else {
+                    let from = *self;
+                    *self = StartupSequence::CharactersVisible {
+                        remaining_ticks: 60, // 1 second at 60 FPS
+                    };
+                    Some((from, *self))
+                }
+            }
+            StartupSequence::CharactersVisible { remaining_ticks } => {
+                if *remaining_ticks > 0 {
+                    *remaining_ticks -= 1;
+                    None
+                } else {
+                    let from = *self;
+                    *self = StartupSequence::GameActive;
+                    Some((from, *self))
+                }
+            }
+            StartupSequence::GameActive => None,
+        }
+    }
+}
 
 /// Handles startup sequence transitions and component management
 pub fn startup_stage_system(
@@ -20,10 +82,12 @@ pub fn startup_stage_system(
                 // TODO: Remove TextOnly tag component
             }
             (StartupSequence::CharactersVisible { .. }, StartupSequence::GameActive) => {
-                // Remove Frozen tag from all entities
+                // Remove Frozen tag from all entities and enable player input
                 for entity in player_query.iter_mut().chain(ghost_query.iter_mut()) {
+                    tracing::info!("Removing Frozen component from entity {}", entity);
                     commands.entity(entity).remove::<Frozen>();
                 }
+
                 // TODO: Add GameActive tag component
                 // TODO: Remove CharactersVisible tag component
             }

src/systems/vulnerable.rs

@@ -0,0 +1,20 @@
+use bevy_ecs::query::With;
+use bevy_ecs::system::{Commands, Query};
+
+use crate::systems::{GhostCollider, Vulnerable};
+
+/// System that decrements the remaining_ticks on Vulnerable components and removes them when they reach zero
+pub fn vulnerable_tick_system(
+    mut commands: Commands,
+    mut vulnerable_query: Query<(bevy_ecs::entity::Entity, &mut Vulnerable), With<GhostCollider>>,
+) {
+    for (entity, mut vulnerable) in vulnerable_query.iter_mut() {
+        if vulnerable.remaining_ticks > 0 {
+            vulnerable.remaining_ticks -= 1;
+        }
+
+        if vulnerable.remaining_ticks == 0 {
+            commands.entity(entity).remove::<Vulnerable>();
+        }
+    }
+}

tests/collision.rs

@@ -1,13 +1,11 @@
-use bevy_ecs::{event::Events, prelude::*, system::RunSystemOnce, world::World};
+use bevy_ecs::{entity::Entity, event::Events, system::RunSystemOnce, world::World};
 
 use pacman::{
     error::GameError,
     events::GameEvent,
     map::builder::Map,
     systems::{
-        collision::{check_collision, collision_system},
-        components::{Collider, EntityType, Ghost, GhostCollider, ItemCollider, PacmanCollider},
-        movement::Position,
+        check_collision, collision_system, Collider, EntityType, Ghost, GhostCollider, ItemCollider, PacmanCollider, Position,
     },
 };
 

tests/formatting.rs

@@ -1,4 +1,4 @@
-use pacman::systems::formatting::format_timing_display;
+use pacman::systems::profiling::format_timing_display;
 use std::time::Duration;
 
 use pretty_assertions::assert_eq;

tests/item.rs

@@ -1,13 +1,11 @@
-use bevy_ecs::{event::Events, prelude::*, system::RunSystemOnce, world::World};
+use bevy_ecs::{entity::Entity, event::Events, system::RunSystemOnce, world::World};
 
 use pacman::{
     events::GameEvent,
     map::builder::Map,
     systems::{
-        audio::AudioEvent,
-        components::{AudioState, EntityType, ItemCollider, PacmanCollider, ScoreResource},
-        item::{is_valid_item_collision, item_system},
-        movement::Position,
+        is_valid_item_collision, item_system, AudioEvent, AudioState, EntityType, ItemCollider, PacmanCollider, Position,
+        ScoreResource,
     },
 };
 

tests/player.rs

@@ -1,4 +1,4 @@
-use bevy_ecs::{event::Events, prelude::*, system::RunSystemOnce, world::World};
+use bevy_ecs::{entity::Entity, event::Events, system::RunSystemOnce, world::World};
 
 use pacman::{
     events::{GameCommand, GameEvent},
@@ -8,10 +8,8 @@ use pacman::{
         graph::{Edge, TraversalFlags},
     },
     systems::{
-        components::{AudioState, DeltaTime, EntityType, GlobalState, PlayerControlled},
-        debug::DebugState,
-        movement::{BufferedDirection, Position, Velocity},
-        player::{can_traverse, player_control_system, player_movement_system},
+        can_traverse, player_control_system, player_movement_system, AudioState, BufferedDirection, DebugState, DeltaTime,
+        EntityType, GlobalState, PlayerControlled, Position, Velocity,
     },
 };