AI-DLC Project Documents / Build Planning

Code Generation Plan - Nokia Snake Game

Code generation plan

Code Generation Plan - Nokia Snake Game

Unit Context

Unit Name: Nokia Snake Game (Monolithic)
Type: Single monolithic web application
Scope: Complete Nokia Snake game implementation
Workspace Root: /Users/mykolasleta/play/ai-dlc-game
Project Type: Greenfield single unit

Code Location Strategy

Application Code: Workspace root (src/, public/, config/)
Documentation: aidlc-docs/construction/nokia-snake-game/code/
Tests: Manual testing only (per NFR requirements)
Build Configuration: Workspace root

Project Structure

/Users/mykolasleta/play/ai-dlc-game/
├── src/
│   ├── core/              # Core game components
│   ├── rendering/         # Rendering engines
│   ├── input/             # Input handling
│   ├── state/             # State management
│   ├── storage/           # Data persistence
│   ├── security/          # Security components
│   ├── performance/       # Performance monitoring
│   ├── utils/             # Utility functions
│   └── main.js            # Application entry point
├── public/
│   ├── index.html         # Main HTML file
│   └── styles.css         # Global styles
├── vite.config.js         # Vite configuration
├── package.json           # Dependencies
├── .eslintrc.js           # ESLint configuration
├── .prettierrc            # Prettier configuration
└── README.md              # Project documentation

Dependencies and Interfaces

External Dependencies: None (vanilla JavaScript)
Dev Dependencies: Vite, ESLint, Prettier
Browser APIs: WebGL, Canvas 2D, localStorage, Touch Events

Code Generation Plan Steps

Step 1: Project Structure Setup

  • 1.1 Create Directory Structure

    • Create src/core/ directory
    • Create src/rendering/ directory
    • Create src/input/ directory
    • Create src/state/ directory
    • Create src/storage/ directory
    • Create src/security/ directory
    • Create src/performance/ directory
    • Create src/utils/ directory
    • Create public/ directory

  • 1.2 Create Configuration Files

    • Create package.json with dependencies
    • Create vite.config.js for build configuration
    • Create .eslintrc.js for code quality
    • Create .prettierrc for code formatting
    • Create .gitignore for version control

Step 2: Core State Management

  • 2.1 GameStore Implementation

    • Create src/state/GameStore.js - Centralized state manager
    • Implement Redux-like store pattern
    • Add state subscription mechanism
    • Add action dispatch system

  • 2.2 Game State Definition

    • Create src/state/gameState.js - Initial state definition
    • Define state structure
    • Define action types
    • Define reducer functions

Step 3: Core Game Engine

  • 3.1 GameEngine Implementation

    • Create src/core/GameEngine.js - Main game loop
    • Implement fixed time step pattern
    • Implement frame skipping logic
    • Add game loop control methods

  • 3.2 Game Logic

    • Create src/core/SnakeLogic.js - Snake movement and growth
    • Create src/core/CollisionDetection.js - Collision detection
    • Create src/core/FoodGenerator.js - Food generation logic
    • Create src/core/ScoreCalculator.js - Scoring system

  • 3.3 Object Pooling

    • Create src/core/ObjectPool.js - Object pool implementation
    • Configure pools for snake segments and food

Step 4: Rendering System

  • 4.1 Renderer Factory

    • Create src/rendering/RendererFactory.js - Renderer selection
    • Implement WebGL feature detection
    • Implement fallback logic

  • 4.2 WebGL Renderer

    • Create src/rendering/WebGLRenderer.js - WebGL implementation
    • Initialize WebGL context
    • Implement rendering methods
    • Add shader programs

  • 4.3 Canvas 2D Renderer

    • Create src/rendering/Canvas2DRenderer.js - Canvas 2D fallback
    • Initialize Canvas 2D context
    • Implement rendering methods

  • 4.4 Canvas Scaler

    • Create src/rendering/CanvasScaler.js - Responsive scaling
    • Implement fit-to-container logic
    • Handle window resize events

Step 5: Input Handling

  • 5.1 Input Manager

    • Create src/input/InputManager.js - Input coordination
    • Set up event listeners
    • Route input to validators

  • 5.2 Input Validator

    • Create src/input/InputValidator.js - Input validation (SECURITY-05)
    • Implement whitelist validation
    • Add game state validation
    • Log validation failures

  • 5.3 Touch Controller

    • Create src/input/TouchController.js - Touch gesture recognition
    • Implement swipe detection (30px threshold)
    • Add haptic feedback
    • Handle touch sensitivity

Step 6: Data Persistence

  • 6.1 Storage Manager

    • Create src/storage/StorageManager.js - localStorage abstraction
    • Implement save/load methods
    • Add data validation
    • Handle storage errors

  • 6.2 Storage Keys

    • Create src/storage/storageKeys.js - Namespaced keys
    • Define all storage keys
    • Add version management

Step 7: Security Components

  • 7.1 Security Logger

    • Create src/security/SecurityLogger.js - Audit logging
    • Implement structured logging
    • Add log rotation (1000 entries)
    • Implement log query methods

  • 7.2 Error Boundary

    • Create src/security/ErrorBoundary.js - Global error handling (SECURITY-15)
    • Set up global error handlers
    • Implement silent recovery
    • Add error logging

  • 7.3 Content Security Policy

    • Add CSP meta tags to HTML
    • Configure security headers

Step 8: Performance Monitoring

  • 8.1 Performance Monitor
    • Create src/performance/PerformanceMonitor.js - FPS and memory tracking
    • Implement FPS calculation
    • Add memory usage tracking
    • Log performance issues

Step 9: Utility Functions

  • 9.1 Helper Functions

    • Create src/utils/helpers.js - Common utilities
    • Add ID generation
    • Add random number utilities
    • Add position utilities

  • 9.2 Constants

    • Create src/utils/constants.js - Game constants
    • Define grid size, speeds, colors
    • Define game configuration

Step 10: Main Application

  • 10.1 Application Entry Point

    • Create src/main.js - Application initialization
    • Initialize all components
    • Set up component lifecycle
    • Start game engine

  • 10.2 HTML Structure

    • Create public/index.html - Main HTML file
    • Add canvas element
    • Add UI containers
    • Add CSP meta tags
    • Add data-testid attributes for automation

  • 10.3 Styles

    • Create public/styles.css - Global styles
    • Add responsive styles
    • Add mobile optimizations
    • Ensure accessibility (contrast, focus indicators)

Step 11: Documentation

  • 11.1 Code Documentation Summary

    • Create aidlc-docs/construction/nokia-snake-game/code/implementation-summary.md
    • Document component architecture
    • Document key design decisions
    • Document file structure

  • 11.2 Project README

    • Create README.md in workspace root
    • Add project description
    • Add setup instructions
    • Add build and run commands
    • Add manual testing checklist

Step 12: Deployment Artifacts

  • 12.1 Build Scripts

    • Add build scripts to package.json
    • Add dev server script
    • Add preview script

  • 12.2 Deployment Guide

    • Create aidlc-docs/construction/nokia-snake-game/code/deployment-guide.md
    • Document build process
    • Document deployment options
    • Document hosting recommendations

Story Traceability

All functional requirements from aidlc-docs/inception/requirements/requirements.md will be implemented through this plan.

Estimated Scope

  • Total Steps: 12 major steps with 40+ sub-steps
  • Files to Create: ~30 JavaScript files + configuration + HTML/CSS
  • Lines of Code: ~3000-4000 lines (estimated)
  • Documentation: 3 markdown files

Implementation Notes

  • All code follows ES2020 standards
  • No external runtime dependencies (vanilla JavaScript)
  • Security baseline compliance (SECURITY-05, SECURITY-15)
  • Mobile-optimized with touch controls
  • Fully offline capable
  • Enterprise-grade security with audit logging