SoonFxThe TypeScript-first numeric engine for games.

Decouple logic from code, manage complex formulas with ease, and build robust RPG/SLG/Card systems.

🎨

Visual Editor Driven

Stop hardcoding formulas. Build them visually. SoonFx Runtime powers the SoonFx Editor, allowing designers to configure logic without code.

⚡

Type-Safe & Fast

Full TypeScript support with strict typing. Zero dependencies, lightweight (<50KB), and tree-shakable.

📐

Powerful Expression Engine

Parse and evaluate complex mathematical expressions with RPN conversion. Supports custom operators and functions.

🎮

Built for Games

Specialized for RPG battle systems, SLG resource calculations, Card game balancing, and complex economy simulations.

🎨 Visual Editor Driven

Stop hardcoding formulas. Build them visually.

SoonFx Runtime is the engine that powers the SoonFx Editor. It allows game designers to configure complex logic without writing a single line of code, while developers can safely execute it at runtime.

The Workflow

Design: Designers create formulas, skill effects, and attribute relationships in the Visual Editor.
Export: The editor generates a JSON configuration file.
Run: The SoonFx Runtime loads this JSON and executes the logic in your game.

Note: While SoonFx Runtime can be used standalone for math and expressions, its true power is unlocked when paired with the Editor.

SoonFx Editor

💡 Use Cases

SoonFx is designed for numeric-heavy game genres:

⚔️ RPG Systems: Skill damage, character stats growth, equipment bonuses, combat power (CP) calculations.
🏰 SLG / Strategy: Resource production rates, building upgrade timers, marching times, tech tree requirements.
🃏 Card Games: Dynamic card values, synergy effects, deck balancing simulation.
📊 Simulation: Complex economy models, probability calculations.