NFR Requirements Plan - Nokia Snake Game

Unit Context

Unit Name: Nokia Snake Game (Monolithic)
Type: Single monolithic web application
Scope: Complete Nokia Snake game implementation
Technology: Web-based with WebGL rendering, localStorage persistence

NFR Requirements Plan Steps

Step 1: Analyze Functional Design

• 1.1 Review Business Logic Model

  • Read aidlc-docs/construction/nokia-snake-game/functional-design/business-logic-model.md
  • Understand game loop complexity and performance requirements
  • Identify state management and persistence needs

• 1.2 Review Business Rules

  • Read aidlc-docs/construction/nokia-snake-game/functional-design/business-rules.md
  • Understand input validation and security requirements
  • Identify error handling and reliability needs

• 1.3 Review Domain Model

  • Read aidlc-docs/construction/nokia-snake-game/functional-design/domain-entities.md
  • Understand entity relationships and complexity
  • Identify data management and scalability considerations

• 1.4 Review Frontend Components

  • Read aidlc-docs/construction/nokia-snake-game/functional-design/frontend-components.md
  • Understand component architecture and rendering requirements
  • Identify user experience and accessibility needs

Step 2: Performance Requirements Assessment

• 2.1 Game Loop Performance

  • Determine target frame rate and responsiveness requirements
  • Identify performance-critical operations
  • Define acceptable latency for user input processing

• 2.2 Rendering Performance

  • Determine WebGL rendering performance requirements
  • Identify optimization needs for different devices
  • Define acceptable load times and rendering quality

• 2.3 Memory Management

  • Determine memory usage constraints
  • Identify garbage collection impact on gameplay
  • Define object pooling and resource management requirements

Step 3: Scalability Requirements Assessment

• 3.1 User Load Considerations

  • Determine expected concurrent user count
  • Identify peak usage patterns
  • Define scaling requirements for different user loads

• 3.2 Data Scalability

  • Determine high score and game state storage needs
  • Identify data growth patterns
  • Define storage capacity and performance requirements

• 3.3 Code Scalability

  • Determine maintainability and extensibility requirements
  • Identify future feature addition considerations
  • Define code organization and modularity requirements

Step 4: Availability and Reliability Requirements

• 4.1 Uptime Requirements

  • Determine acceptable downtime for game
  • Identify critical vs non-critical functionality
  • Define recovery time objectives

• 4.2 Error Handling and Recovery

  • Determine error tolerance levels
  • Identify critical failure points
  • Define recovery procedures and user experience

• 4.3 Data Integrity

  • Determine data loss tolerance
  • Identify backup and recovery requirements
  • Define data validation and consistency requirements

Step 5: Security Requirements Assessment

• 5.1 Input Security

  • Determine input validation requirements
  • Identify potential attack vectors
  • Define security testing requirements

• 5.2 Data Security

  • Determine data protection requirements
  • Identify sensitive data handling needs
  • Define encryption and access control requirements

• 5.3 Compliance Requirements

  • Determine regulatory compliance needs
  • Identify industry standards to follow
  • Define audit and logging requirements

Step 6: Usability and Accessibility Requirements

• 6.1 User Experience

  • Determine responsiveness and smoothness requirements
  • Identify visual feedback and animation needs
  • Define control responsiveness expectations

• 6.2 Accessibility

  • Determine WCAG compliance level required
  • Identify assistive technology support needs
  • Define keyboard navigation and screen reader requirements

• 6.3 Cross-Platform Compatibility

  • Determine browser compatibility requirements
  • Identify device and screen size support
  • Define performance consistency across platforms

Step 7: Maintainability and Operational Requirements

• 7.1 Code Quality

  • Determine code standards and best practices
  • Identify testing and documentation requirements
  • Define code review and quality assurance processes

• 7.2 Deployment and Operations

  • Determine deployment frequency and process
  • Identify monitoring and alerting requirements
  • Define operational support and maintenance needs

• 7.3 Technical Debt Management

  • Determine acceptable technical debt levels
  • Identify refactoring and improvement processes
  • Define code evolution and migration strategies

Step 8: Technology Stack Decisions

• 8.1 Frontend Framework Selection

  • Determine framework requirements and constraints
  • Identify compatibility with WebGL and game development
  • Define learning curve and team expertise considerations

• 8.2 Build and Tooling Decisions

  • Determine build tool requirements
  • Identify development workflow needs
  • Define testing and quality assurance tooling

• 8.3 Third-Party Dependencies

  • Determine library and dependency requirements
  • Identify licensing and compatibility considerations
  • Define version management and update strategies

Questions for User Input

Question 1: Performance Requirements

What are the performance expectations for the game?

A) Basic - 30 FPS minimum, acceptable on low-end devices
B) Standard - 60 FPS target, smooth on most modern devices
C) High - 120 FPS target, optimized for gaming devices
D) Variable - Adaptive based on device capabilities

Question 2: Browser Compatibility Requirements

Which browsers and versions should be supported?

A) Modern browsers only (Chrome, Firefox, Safari latest 2 versions)
B) Broad compatibility (Chrome 80+, Firefox 75+, Safari 13+, Edge 80+)
C) Maximum compatibility (including older browsers with fallbacks)
D) Specific browser only (e.g., Chrome only for internal use)

Question 3: Mobile Device Support

What level of mobile device support is required?

A) Desktop only - No mobile support needed
B) Responsive design - Works on mobile but not optimized
C) Mobile optimized - Touch controls, mobile-friendly UI
D) Mobile first - Primary platform is mobile devices

Question 4: Accessibility Requirements

What level of accessibility compliance is required?

A) Basic - Keyboard navigation, some screen reader support
B) Standard - WCAG 2.1 AA compliance
C) High - Full WCAG 2.1 AAA compliance
D) None - Accessibility not a priority for this game

Question 5: Offline Functionality

What level of offline functionality is required?

A) Online only - Requires internet connection
B) Basic offline - Game plays offline, scores sync when online
C) Full offline - Complete game functionality without internet
D) Progressive web app - Installable, works offline with caching

Question 6: Data Persistence Scope

Beyond localStorage, what data persistence is needed?

A) Local only - localStorage sufficient, no server persistence
B) Basic cloud - High scores sync to cloud service
C) Full cloud - Game state sync across devices
D) Social features - Leaderboards, achievements, multiplayer

Question 7: Security Priorities

What are the security priorities for this game?

A) Basic - Input validation, XSS prevention
B) Standard - Full security baseline compliance
C) Enhanced - Additional security measures for sensitive data
D) Maximum - Enterprise-grade security with audit logging

Question 8: Development and Deployment Approach

What development and deployment approach should be used?

A) Simple - Single HTML/JS file, manual deployment
B) Standard - Build tool (Vite/Webpack), automated deployment
C) Advanced - CI/CD pipeline, automated testing, staging environments
D) Enterprise - Full DevOps pipeline, monitoring, rollback capabilities

Question 9: Testing Requirements

What level of testing is required?

A) Manual testing only - Developer tests before release
B) Basic automated - Unit tests for critical logic
C) Comprehensive - Unit, integration, and end-to-end tests
D) Full test suite - Including performance, security, and accessibility tests

Question 10: Maintenance and Support Expectations

What are the maintenance and support expectations?

A) One-time development - No ongoing maintenance expected
B) Basic maintenance - Bug fixes and minor updates
C) Active maintenance - Regular updates, feature additions
D) Long-term support - Multi-year maintenance with roadmap

Step 9: Generate NFR Requirements Artifacts

• Generate nfr-requirements.md with detailed NFR specifications
• Generate tech-stack-decisions.md with technology choices and rationale

Step 10: Validate NFR Requirements

• Validate NFR requirements completeness
• Validate tech stack decisions against requirements
• Validate security and compliance requirements

Step 11: Security Compliance Check

• Verify SECURITY baseline compliance in NFR requirements
• Document security considerations in NFR design
• Validate input validation and error handling requirements