Unit of Work Plan - Nokia Snake Game

Context

Based on the application design, we need to decompose the Nokia Snake game into manageable units of work for development. The game is a web-based application with:

• Centralized state management (Redux-like pattern)
• WebGL rendering with 2D context
• Plugin architecture for extensibility
• Full game state persistence

Decomposition Plan Steps

Step 1: Analyze Application Design

• 1.1 Review Components

  • Game Engine Component
  • Rendering Component
  • Input Handler Component
  • State Management Component
  • UI Component
  • Score/Game State Component

• 1.2 Review Services

  • Game Orchestration Service
  • Score Service
  • Event Bus Service
  • Plugin Manager Service

• 1.3 Review Plugin System

  • Power-up Manager Plugin
  • Audio Manager Plugin
  • Analytics Plugin

Step 2: Determine Decomposition Strategy

• 2.1 Evaluate Decomposition Approaches

  • Monolithic single unit (entire game as one unit) - SELECTED
  • Functional units (by component type)
  • Layer-based units (presentation, business logic, data)
  • Feature-based units (gameplay, UI, services, plugins)

• 2.2 Consider Development Factors

  • Team size and structure: Single developer
  • Development timeline: Standard
  • Testing strategy: End-to-end testing only
  • Deployment requirements: Single web app deployment

Step 3: Define Unit Boundaries

• 3.1 Identify Unit Candidates

  • Core Game Engine Unit
  • Rendering & UI Unit
  • Input & State Management Unit
  • Services & Orchestration Unit
  • Plugin System Unit

• 3.2 Define Unit Responsibilities

  • Map components to units
  • Map services to units
  • Define unit interfaces
  • Specify unit dependencies
  • Plugin System Unit

• 3.2 Define Unit Responsibilities

  • Map components to units
  • Map services to units
  • Define unit interfaces
  • Specify unit dependencies

Step 4: Create Dependency Matrix

• 4.1 Map Unit Dependencies
  • Identify dependency directions
  • Document dependency types (compile-time, runtime)
  • Identify circular dependencies
  • Plan dependency resolution

Step 5: Map to Development Workflow

• 5.1 Development Sequence
  • Determine unit development order
  • Identify parallel development opportunities
  • Plan integration points
  • Define testing strategy per unit

Step 6: Questions for User Input

Question 1: Decomposition Approach

How should we decompose the game into units of work?

A) Single monolithic unit - Entire game as one development unit (simplest) B) Two units - Core game engine + UI/services (balanced approach) C) Three units - Game engine, Rendering/UI, Services/plugins (modular) D) Four+ units - Fully decomposed by component type (most modular)

Question 2: Development Team Structure

What is the expected development team structure?

A) Single developer working on everything B) Small team (2-3 developers) with some specialization C) Larger team with clear component ownership D) Not sure / doesn't matter

Question 3: Deployment Strategy

What deployment strategy should we plan for?

A) Single web application deployment (all-in-one) B) Modular deployment with lazy loading C) Micro-frontend architecture (if scaling to multiple games) D) Not applicable - simple static hosting

Question 4: Testing Strategy

What testing approach should we use?

A) End-to-end testing only (simplest) B) Unit testing for core logic + integration testing C) Comprehensive testing (unit, integration, e2e, performance) D) Test-driven development (TDD) approach

Question 5: Code Organization (Greenfield)

How should we organize the codebase?

A) Flat structure - all files in root or few directories B) Feature-based structure - directories by feature/component C) Layer-based structure - presentation, domain, infrastructure D) Hybrid approach - combination of above

Question 6: Build and Tooling

What build and tooling approach should we use?

A) Simple - minimal tooling, manual builds B) Standard - npm scripts, basic bundler C) Comprehensive - full CI/CD, automated testing, bundling D) Production-grade - advanced tooling, optimization, monitoring

Step 7: Generate Unit Artifacts

• Generate unit-of-work.md with unit definitions
• Generate unit-of-work-dependency.md with dependency matrix
• Generate unit-of-work-story-map.md (N/A - no user stories)
• Document code organization strategy

Step 8: Validate Unit Boundaries

• Validate unit responsibilities are clear
• Validate dependencies are manageable
• Validate development workflow is practical
• Validate testing strategy is feasible

Step 9: Security and Compliance

• Ensure security considerations per unit
• Verify SECURITY baseline compliance per unit
• Document security responsibilities per unit

Step 10: Final Review

• Review decomposition for completeness
• Ensure all components are assigned to units
• Verify unit interfaces are well-defined
• Confirm development sequence is logical

Follow-up Questions

Follow-up to Question 4: Testing Strategy

You selected "End-to-end testing only" (A). For a game with complex logic like collision detection, game rules, and state management, would you consider: A) Stick with end-to-end testing only (simplest) B) Add unit testing for core game engine logic C) Add integration testing for component interactions D) Comprehensive testing approach

Follow-up to Question 5: Code Organization Details

You selected "Feature-based structure" (B) with a single monolithic unit. Could you clarify the preferred feature organization? A) By component type (game-engine/, rendering/, ui/, services/) B) By game feature (gameplay/, rendering/, input/, state/, ui/) C) By domain (core/, presentation/, infrastructure/) D) Other (please describe)

Follow-up to Question 6: Build Tooling Details

You selected "Standard - npm scripts, basic bundler" (B). Which bundler/tooling approach? A) Webpack with basic configuration B) Parcel (zero-configuration) C) Vite (modern, fast) D) ES modules only (no bundler)