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chore: update TODO.md

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Signed-off-by: Harald Hoyer <harald@hoyer.xyz>
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Harald Hoyer 2025-06-27 09:22:36 +02:00
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# TODO
**1. Core Gameplay Loop & State Management:**
**1. Core Gameplay Loop & State Management**
* ~~**Player Lives:**~~ **(DONE)**
* ~~Add a `PlayerLives` resource (e.g., starting with 3).~~
* ~~Modify `check_player_enemy_collisions`: Instead of just printing, decrement the lives count.~~
* ~~Implement player destruction (despawn the player sprite) and respawn logic (maybe after a short delay, with temporary invincibility).~~
* ~~**Game Over State:**~~ **(DONE)**
* ~~Use Bevy's `States` (e.g., `Playing`, `GameOver`).~~
* ~~Transition to `GameOver` when `PlayerLives` reaches zero.~~
* ~~In the `GameOver` state: stop enemy spawning, stop player controls, display a "Game Over" message (using `bevy_ui`), potentially offer a restart option.~~
* ~~**Scoring:**~~ **(DONE)**
* ~~Add a `Score` resource.~~
* ~~Increment the score in `check_bullet_collisions` when an enemy is hit.~~
* Consider different point values for different enemy types or hitting enemies during dives later.
* ~~**Levels/Stages:**~~ **(DONE)**
* ~~Add a `CurrentStage` resource.~~
* ~~Define criteria for clearing a stage (e.g., destroying all enemies in a wave/formation).~~
* ~~Implement logic to advance to the next stage, potentially increasing difficulty (enemy speed, firing rate, different formations).~~
* [x] **Player Lives**
* [x] Add a `PlayerLives` resource.
* [x] Decrement lives on collision.
* [x] Implement player destruction and respawn with temporary invincibility.
* [x] **Game Over State**
* [x] Use Bevy's `States` (`Playing`, `GameOver`).
* [x] Transition to `GameOver` when lives reach zero.
* [x] Display a "Game Over" message.
* [x] **Scoring**
* [x] Add a `Score` resource.
* [x] Increment score when an enemy is hit.
* [x] **Levels/Stages**
* [x] Add `CurrentStage` and `StageConfigurations` resources.
* [x] Define criteria for clearing a stage.
* [x] Advance to the next stage with increasing difficulty.
**2. Enemy Behavior - Formations & Attack Patterns:**
**2. Enemy Behavior - Formations & Attack Patterns**
* **Enemy Formations:** This is a core Galaga feature.
* ~~Define target positions for the enemy formation on screen.~~ **(DONE)**
* ~~Give enemies an `Entering` state/component: They fly onto the screen following predefined paths (curves, waypoints).~~ **(DONE - Basic linear path implemented)**
* Give enemies a `Formation` state/component: Once they reach their target position, they stop and hold formation. **(DONE - Stop implemented by removing FormationTarget)**
* **Enemy Attack Dives:**
* ~~Give enemies an `Attacking` state/component.~~ **(DONE)**
* ~~Periodically trigger enemies in the formation to switch to the `Attacking` state.~~ **(DONE - Random selection after formation complete)**
* ~~Define attack paths (swooping dives towards the player area).~~ **(DONE - Basic swoop towards center implemented)**
* ~~Make enemies fire bullets (downwards or towards the player) during their dives.~~ **(DONE - Downward)**
* After an attack dive, enemies could return to their formation position or fly off-screen. **(Fly off-screen implemented)**
* **Enemy Variety:**
* ~~Introduce different types of enemies (e.g., using different components or an enum).~~ **(DONE - Added EnemyType enum and field)**
* ~~Assign different behaviors, point values, and maybe sprites to each type.~~ **(DONE - Behaviors, points & color based on type)**
* [x] **Enemy Formations**
* [x] Define target positions for formations (`FormationLayout`).
* [x] Enemies have an `Entering` state to fly to their position.
* [x] Enemies have an `InFormation` state.
* [x] **Enemy Attack Dives**
* [x] Enemies have an `Attacking` state with different `AttackPattern`s (Swoop, Direct, Kamikaze).
* [x] Periodically trigger random enemies to start an attack dive.
* [x] Enemies fire bullets during their dives.
* [x] Enemies are despawned when they fly off-screen after an attack.
* [x] **Enemy Variety**
* [x] `EnemyType` enum (`Grunt`, `Boss`).
* [x] Different behaviors, points, and colors based on type.
**3. Advanced Galaga Mechanics:**
**3. Advanced Galaga Mechanics**
* **Boss Galaga & Capture Beam:**
* ~~Create a "Boss" enemy type.~~ **(DONE - Added to Enum, handled in matches)**
* Implement the tractor beam attack (visual effect, player capture logic).
* Player needs a `Captured` state.
* Logic for the Boss to return captured ships to the formation.
* **Dual Fighter (Rescuing Captured Ship):**
* Allow the player to shoot a Boss Galaga attempting to capture or one holding a captured ship.
* Implement the logic to free the captured ship.
* Implement the dual fighter mode (controlling two ships, firing two bullets). This involves significant changes to player control and shooting systems.
* **Challenging Stages:**
* Implement a special stage type (e.g., every few levels).
* Enemies fly in intricate patterns without shooting.
* Award bonus points for destroying all enemies in the stage.
* [ ] **Boss Galaga & Capture Beam**
* [x] Create a "Boss" enemy type.
* [x] Implement the tractor beam attack logic (`boss_capture_attack` system).
* [x] Player has a `Captured` component when hit by the beam.
* [x] Boss has a `ReturningWithCaptive` state to go back to the formation.
* [ ] Improve the tractor beam visual effect (currently a simple rectangle).
* [ ] **Dual Fighter (Rescuing Captured Ship)**
* [ ] Allow the player to shoot a Boss that is holding a captured ship.
* [ ] Implement the logic to free the captured ship upon shooting the Boss.
* [ ] Implement the dual fighter mode (controlling two ships, firing two bullets).
* [ ] **Challenging Stages**
* [ ] Implement a special stage type (e.g., every 3-4 levels).
* [ ] Design and implement intricate flight patterns for enemies that do not shoot.
* [ ] Award bonus points for destroying all enemies in the stage.
**4. Polish and User Interface:**
**4. Polish and User Interface**
* **Visuals:**
* Replace placeholder shapes with actual sprites using `SpriteBundle` or `SpriteSheetBundle`. Create distinct looks for the player, different enemy types, bullets.
* Add explosion effects/animations when enemies or the player are destroyed.
* Implement a scrolling starfield background for a more classic space feel.
* **Audio:**
* Integrate `bevy_audio`.
* Add sound effects for player shooting, enemy firing, explosions, player death, capturing, etc.
* Add background music that might change per stage or state (e.g., main gameplay vs. challenging stage).
* **UI:**
* Use `bevy_ui` to display the current Score, Lives remaining, and Stage number on screen during gameplay.
* Display High Score?
* Create a Start Menu state.
Starting with the Core Gameplay Loop (Lives, Game Over, Score, basic Stages) and then moving onto Enemy Formations and Attack Patterns would likely provide the biggest steps towards a Galaga feel.
* [ ] **Visuals**
* [ ] Replace placeholder geometric shapes with actual sprites.
* [ ] Add explosion animations/effects.
* [ ] Implement a scrolling starfield background.
* [ ] **Audio**
* [ ] Integrate `bevy_audio`.
* [ ] Add sound effects (shooting, explosions, player death, tractor beam, etc.).
* [ ] Add background music.
* [ ] **UI**
* [x] Display Score, Lives, and Stage in the window title.
* [ ] Display Score, Lives, and Stage on the screen using `bevy_ui`.
* [ ] Implement a High Score system (saving/loading).
* [ ] Create a Start Menu state with a "Start Game" button.
* [ ] Add a "Press R to Restart" message to the `GameOver` screen and implement restart logic.