System Requirements Document (SRD)

Project Name: zinc-girl

1. Introduction

Project Name: zinc-girl

Welcome to the System Requirements Document for zinc-girl, a creative and innovative application designed to empower users to design and customize characters for video games. This project, envisioned by Cole Supachana, aims to provide a platform where users can unleash their creativity and craft unique avatars that can be shared, exported, or integrated into various gaming environments.

The application will cater to users in the United States, ensuring locale-specific defaults such as time zones (UTC-5: Eastern Time), currency (USD), and cultural preferences.

2. System Overview

zinc-girl is a character creation app that allows users to design video game avatars with a wide range of customization options. The system will include features such as detailed appearance customization, clothing and accessory selection, and export functionality for integration into games or sharing online.

The application will be accessible via web and mobile platforms, ensuring a seamless experience for users across devices. It will leverage cutting-edge technologies, including AI-driven suggestions for character designs and real-time rendering for a visually immersive experience.

3. Functional Requirements

Story Points:

• As a User, I should be able to create characters with customizable appearances, including facial features, body types, hairstyles, and skin tones.
• As a User, I should be able to select clothing, accessories, and props for my characters.
• As a User, I should be able to preview my character in 3D with real-time rendering.
• As a User, I should be able to save my character designs to a personal library.
• As a User, I should be able to export my character designs in formats compatible with popular video games.
• As a User, I should be able to share my character designs on social media platforms directly from the app.
• As a User, I should be able to access AI-driven suggestions for character customization based on popular trends or themes.

4. User Personas

1. Casual Creator

• Description: Users who enjoy designing characters for fun and sharing them online.
• Goals: Create visually appealing avatars, share designs on social media, and explore creative possibilities.
• Technical Expertise: Low to moderate.

2. Game Developer

• Description: Developers who need custom characters for their games.
• Goals: Export characters in game-compatible formats and integrate them into their projects.
• Technical Expertise: High.

3. Professional Artist

• Description: Artists who use the app as a tool for conceptualizing and visualizing character designs.
• Goals: Create detailed and unique characters, save designs for future reference, and use AI suggestions for inspiration.
• Technical Expertise: Moderate to high.

5. Visuals Colors and Theme

Color Palette:

• Background: #1E1E2F (Deep Midnight Blue)
• Surface: #2A2A40 (Charcoal Gray)
• Text: #F5F5F5 (Soft White)
• Accent: #FF6F61 (Vivid Coral)
• Muted Tones: #7A7A92 (Slate Gray)

The theme will evoke a futuristic and creative vibe, blending sleek, modern aesthetics with vibrant accents to inspire creativity and engagement.

6. Signature Design Concept

Interactive 3D Character Creation Hub

The homepage will feature a 3D interactive workspace where users can immediately start designing their characters. Upon entering the app, users will see a rotating 3D model of a default character.

• Interaction: Users can click and drag to rotate the model, zoom in/out, and select customization options from a floating toolbar.
• Animations: When users select a customization option (e.g., hairstyle), the model will animate smoothly to showcase the change in real-time.
• Transitions: Sections of the app will transition with fluid animations, such as sliding panels or fading effects, to maintain a polished experience.
• Color Shifts: The background will subtly shift colors based on the customization theme (e.g., warm tones for fantasy characters, cool tones for sci-fi).
• Micro-Interactions: Buttons and sliders will have tactile feedback, such as glowing edges or slight vibrations, to enhance user engagement.

This bold and immersive design will make zinc-girl stand out as a visually stunning and user-friendly application.

7. Non-Functional Requirements

• Performance: The app should load character models and render customizations within 2 seconds.
• Scalability: The system must support up to 1 million users concurrently.
• Security: User data, including saved designs, must be encrypted and stored securely.
• Accessibility: The app must comply with WCAG 2.1 Level AA standards for accessibility.
• Localization: Default settings should cater to the US audience, with options for other locales in future updates.

8. Tech Stack

Frontend:

• React for Web
• React Native for Mobile

Backend:

• Python
• FastAPI

Database:

• MySQL (preferred)
• Alembic for migrations

AI Models:

• GPT 5.4 for user-friendly responses
• Google Nano Banana for image generation

AI Tools:

• Litellm for LLM Routing
• Langchain

Local Orchestration:

• Docker
• docker-compose

Server-Side Orchestration:

• Kubernetes

9. Assumptions and Constraints

• The app will initially target the US market, with localization options planned for future updates.
• The system will require internet connectivity for AI-driven suggestions and real-time rendering.
• Export functionality will support popular game formats but may not cover all proprietary formats.
• The app will be optimized for modern browsers and devices but may have limited support for older systems.

10. Glossary

• Character Model: A 3D representation of a video game avatar.
• Customization Options: Features that allow users to modify the appearance of their characters.
• Real-Time Rendering: The process of generating images instantly as users make changes.
• AI-Driven Suggestions: Recommendations provided by artificial intelligence based on user preferences or trends.
• WCAG: Web Content Accessibility Guidelines, a standard for making web content accessible to all users.