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bglga/TODO.md
Harald Hoyer 9d80626cc6 feat: add scrolling starfield background 
Add 150 stars with randomized positions, sizes, speeds, and brightness.
Stars scroll downward with parallax depth effect and wrap around at
screen edges. Also fixes Bevy 0.13 API issues in game_state.rs
(KeyCode::R → KeyR, Input → ButtonInput).
2026-05-06 15:05:32 +02:00

3.2 KiB
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TODO

1. Core Gameplay Loop & State Management

  • Player Lives
    • Add a PlayerLives resource.
    • Decrement lives on collision.
    • Implement player destruction and respawn with temporary invincibility.
  • Game Over State
    • Use Bevy's States (Playing, GameOver).
    • Transition to GameOver when lives reach zero.
    • Display a "Game Over" message.
  • Scoring
    • Add a Score resource.
    • Increment score when an enemy is hit.
  • Levels/Stages
    • Add CurrentStage and StageConfigurations resources.
    • Define criteria for clearing a stage.
    • Advance to the next stage with increasing difficulty.

2. Enemy Behavior - Formations & Attack Patterns

  • Enemy Formations
    • Define target positions for formations (FormationLayout).
    • Enemies have an Entering state to fly to their position.
    • Enemies have an InFormation state.
  • Enemy Attack Dives
    • Enemies have an Attacking state with different AttackPatterns (Swoop, Direct, Kamikaze).
    • Periodically trigger random enemies to start an attack dive.
    • Enemies fire bullets during their dives.
    • Enemies are despawned when they fly off-screen after an attack.
  • Enemy Variety
    • EnemyType enum (Grunt, Boss).
    • Different behaviors, points, and colors based on type.

3. Advanced Galaga Mechanics

  • Boss Galaga & Capture Beam
    • Create a "Boss" enemy type.
    • Implement the tractor beam attack logic (boss_capture_attack system).
    • Player has a Captured component when hit by the beam.
    • 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

  • 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
    • 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.