Overview

Relevant source files

This document provides a comprehensive overview of the Flash Add Game repository, a mental arithmetic training application implemented across multiple platforms. The repository demonstrates cross-platform development patterns by implementing the same core game logic in Scratch visual programming, Python command-line interface, and web deployment formats.

For detailed implementation specifics of each platform, see Game Implementations. For build system mechanics and documentation generation, see Build and Documentation System.

System Purpose and Architecture

The Flash Add Game (フラッシュ暗算) implements a mental arithmetic challenge where users must calculate the sum of 10 randomly generated numbers that flash briefly on screen. The system architecture follows a multi-platform strategy with shared game logic implemented independently across three distinct environments.

System Architecture Overview

Sources: README.md1-12 python/flash.py1-32 scratch/flash.sb31-72

Multi-Platform Implementation Strategy

The repository implements the identical game mechanics across three distinct runtime environments, each optimized for different deployment contexts and user interactions.

Platform	Runtime	Interface	Target Audience
Scratch	Browser VM	Visual blocks, sprites	Educational, visual learners
Python	Command line	Text-based I/O	Developers, automation
Web	Browser DOM	HTML/JavaScript	General web users

Platform Implementation Mapping

Sources: python/flash.py8-31 README.md3-5

Build Pipeline and Asset Generation

The system employs a sophisticated build pipeline that converts the primary Scratch implementation into multiple deployment formats and generates comprehensive documentation artifacts.

Build Pipeline Architecture

Sources: README.md9-11

File Structure and Component Relationships

The repository structure reflects the multi-platform approach with clear separation between implementations and generated artifacts.

Repository File Structure

Sources: README.md1-12

Core Game Logic Implementation

All platform implementations follow the same fundamental algorithm with platform-specific adaptations for user interface and timing mechanisms.

The core algorithm pattern implemented across all platforms:

Initialization: Set correct_answer = 0
Number Generation Loop: For 10 iterations:
- Generate random number (1-9)
- Display number for 0.5 seconds
- Clear display for 0.1 seconds
- Add number to correct_answer
User Input: Prompt for sum calculation
Validation: Compare user input with correct_answer
Result Display: Show success message or correct answer

Universal Game Logic Flow

Sources: python/flash.py6-31

External Tool Dependencies

The system relies on several external web-based tools for build processes and documentation generation, creating a distributed build pipeline that minimizes local tooling requirements.

Tool	Purpose	Input	Output
TurboWarp Packager	Web app generation	`flash.sb3`	`index.html`
parse-sb3-blocks	Block extraction	`flash.sb3`	`scratchblocks.txt`
scratchblocks	Visual documentation	`scratchblocks.txt`	`scratchblocks.svg`

This architecture enables automated asset generation while maintaining compatibility with the broader Scratch ecosystem and educational tooling landscape.