Add living roadmap document to track project progress

ROADMAP.md

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+# Snake Game Development Roadmap
+
+This is a living document that tracks the development progress of the AI Snake Game project.
+
+## Current Status
+Last Updated: [Initial Version]
+
+## Phase 1: Project Setup and Basic Structure ✅
+- [x] Create project structure and virtual environment
+- [x] Initialize git repository
+- [x] Set up dependency management (requirements.txt)
+- [x] Create basic project documentation (README.md)
+- [x] Create living roadmap document
+
+## Phase 2: Core Game Development 🔄
+- [x] Implement basic game window using Pygame
+- [x] Create Snake class with movement mechanics
+- [ ] Implement food spawning system
+  - [ ] Create Food class
+  - [ ] Add random food placement
+  - [ ] Add collision detection with food
+- [x] Add collision detection (walls and self)
+- [ ] Implement scoring system
+  - [ ] Add score display
+  - [ ] Add high score tracking
+- [ ] Add game over conditions
+  - [ ] Implement game over state transition
+  - [ ] Add restart functionality
+
+## Phase 3: Game Polish and UI
+- [ ] Add main menu interface
+  - [ ] Create menu layout
+  - [ ] Add game mode selection
+  - [ ] Add settings options
+- [x] Implement pause functionality
+- [ ] Add visual effects and animations
+  - [ ] Snake movement animation
+  - [ ] Food spawn animation
+  - [ ] Score increase animation
+- [ ] Include sound effects and background music
+  - [ ] Add movement sounds
+  - [ ] Add collision sounds
+  - [ ] Add background music
+  - [ ] Add menu sounds
+- [ ] Display score and high score
+- [ ] Add game over screen with restart option
+
+## Phase 4: AI Implementation
+- [ ] Design AI algorithm (pathfinding)
+  - [ ] Research and select appropriate algorithm
+  - [ ] Implement basic pathfinding
+- [ ] Implement AI snake movement logic
+  - [ ] Create AI controller class
+  - [ ] Implement decision making
+- [ ] Add AI difficulty levels
+  - [ ] Easy mode (basic pathfinding)
+  - [ ] Medium mode (improved decision making)
+  - [ ] Hard mode (optimal pathfinding)
+- [ ] Create mode selection (Player vs AI)
+- [ ] Optimize AI performance
+
+## Phase 5: Final Polish
+- [ ] Add configuration options
+  - [ ] Game speed settings
+  - [ ] Visual settings
+  - [ ] Sound settings
+- [ ] Implement save/load functionality for high scores
+- [ ] Bug fixing and performance optimization
+- [ ] Code cleanup and documentation
+  - [ ] Add docstrings
+  - [ ] Create API documentation
+  - [ ] Update README with final features
+- [ ] Final testing and refinements
+
+## Next Steps
+1. Implement the food spawning system
+   - Create Food class
+   - Add random food placement logic
+2. Add scoring system
+   - Implement score tracking
+   - Add score display
+3. Complete game over conditions
+   - Add game over state handling
+   - Implement restart functionality
+4. Create main menu interface
+   - Design menu layout
+   - Implement menu navigation
+
+## Known Issues
+- None reported yet
+
+## Future Considerations
+- Multiplayer support
+- Additional game modes
+- Custom themes/skins
+- Achievement system