Application Design Plan - Nokia Snake Game

Design Context

Based on the requirements, we need to design a web-based Nokia Snake game with:

• Modern minimalist UI
• Full-featured game mechanics (power-ups, different food types, high scores)
• Keyboard-only controls
• Extensible architecture for future enhancements

Design Plan Steps

Step 1: Component Identification

• 1.1 Identify Core Components
  • Game Engine Component
  • Rendering Component
  • Input Handler Component
  • State Management Component
  • UI Component
  • Score/Game State Component

Step 2: Component Methods Definition

• 2.1 Game Engine Component Methods

  • Define game loop methods
  • Define collision detection methods
  • Define game state transition methods
  • Define game rule enforcement methods

• 2.2 Rendering Component Methods

  • Define canvas rendering methods
  • Define UI element rendering methods
  • Define animation methods
  • Define screen update methods

• 2.3 Input Handler Methods

  • Define keyboard input handling
  • Define input validation methods
  • Define control mapping methods

• 2.4 State Management Methods

  • Define game state persistence methods
  • Define score tracking methods
  • Define game state transition methods

Step 3: Service Layer Design

• 3.1 Game Orchestration Service

  • Game loop orchestration
  • Game state coordination
  • Event handling coordination

• 3.2 Score Service

  • Score calculation and tracking
  • High score management
  • Score persistence (local storage)

Step 4: Component Dependencies

• 4.1 Dependency Mapping
  • Map component dependencies
  • Define communication patterns
  • Identify circular dependencies

Step 5: Design Questions for User Input

Question 1: Component Granularity

How granular should the components be? Should we have: A) Coarse-grained components (Game Engine, UI, Input) B) Fine-grained components (Game Loop, Collision Detection, Rendering Engine, Input Handler, etc.) C) Hybrid approach with core engine and modular plugins

Question 2: State Management Approach

What state management approach should we use? A) Centralized state store (Redux-like pattern) B) Component-local state with event-driven updates
C) Hybrid approach with global game state and local component state D) Other (please describe)

Question 3: Rendering Strategy

What rendering approach should we use? A) Canvas 2D API for all rendering B) DOM-based rendering with HTML elements C) Hybrid approach (canvas for game, DOM for UI) D) WebGL for advanced effects (if needed)

Question 4: Input Handling Strategy

How should we handle input? A) Centralized input manager with event delegation B) Component-based input handling C) Event-driven with custom events D) Hybrid approach with input routing

Question 5: Game State Persistence

How should we handle game state persistence? A) LocalStorage for high scores only B) Full game state persistence (save/load games) C) Cloud-based persistence for cross-device play D) No persistence beyond session

Question 6: Security Considerations

Given security rules are enforced, what's the priority? A) Focus on input validation and XSS prevention B) Focus on secure coding practices C) Focus on data validation and sanitization
D) All of the above with equal priority

Step 6: Design Validation

• Validate component interfaces
• Validate service layer design
• Validate dependency graph
• Validate extensibility for future features

Step 7: Artifact Generation

• Generate components.md with component definitions
• Generate component-methods.md with method signatures
• Generate services.md with service definitions
• Generate component-dependency.md with dependency graph
• Generate application-design.md consolidated document

Step 8: Security Compliance Check

• Verify SECURITY-04 (HTTP Security Headers) compliance
• Verify SECURITY-05 (Input Validation) compliance
• Verify SECURITY-12 (Authentication) is N/A (no auth needed)
• Verify SECURITY-15 (Exception Handling) compliance

Step 9: Extensibility Review

• Review for extensibility points
• Identify plugin/extension points
• Review for modularity and testability

Step 10: Final Validation

• All components have clear responsibilities
• All dependencies are properly defined
• Security requirements are addressed
• Performance considerations addressed
• Extensibility requirements met

Follow-up Questions

Follow-up to Question 3: Rendering Strategy

You selected WebGL (D) for rendering. WebGL is typically used for 3D graphics and advanced visual effects. For a 2D Nokia Snake game, would you prefer: A) Canvas 2D API (simpler, better for 2D games) B) WebGL with 2D context (for potential future 3D effects) C) Hybrid: Canvas 2D for game, WebGL for special effects D) Stick with WebGL as selected

Follow-up to Question 4: Input Handling Strategy

You selected "Hybrid approach with input routing". Could you clarify what "hybrid" means in this context? A) Centralized input manager that routes to specific components B) Component-based with some centralized coordination C) Event-driven with both global and local event handlers D) Other (please describe)

Follow-up to Question 5: Game State Persistence

You selected "Full game state persistence (save/load games)". For a snake game, this could include: A) Save/load full game state (snake position, food, score, etc.) B) Save only high scores and game settings C) Save game state with checkpoint system D) Other (please describe)