Engine Philosophy
PixelRoot32 is not the product of a traditional electronics expert or a large engineering team.
It was born from curiosity, experimentation, and a deep love for retro games from the 90s.
The journey started with a simple Raspberry Pi Zero project (PiGRRL Zero), exploring how far limited hardware could go. From there, the challenge evolved: rendering small games, experimenting with engines like Godot under constraints, and eventually discovering the ESP32 as a surprisingly capable platform for game development.
Coming from a mobile development background with limited experience in C++, this project represents a leap into a different domain. That leap was made possible by how accessible knowledge has become today—especially through AI-assisted tools that lower the barrier to learning and building complex systems. PixelRoot32, in many ways, reflects that shift: the ability to explore new fields driven by curiosity rather than formal specialization.
PixelRoot32 exists as a personal exploration of what is possible when passion meets constraints.
Core Principles
- Constraints drive designLimited hardware is not a limitation, but a creative constraint that shapes better, simpler systems.
- Determinism over convenienceThe engine favors predictable behavior over abstractions that hide complexity.
- No hidden costsNo runtime allocations, no implicit work — everything is explicit and under control.
- Simplicity over complexitySystems are designed to be understandable, hackable, and transparent.
- Learning by buildingPixelRoot32 is as much a learning journey as it is a game engine.
- Retro-inspired, not retro-limitedInspired by 90s games, but built with modern tools and ideas.
Philosophy in Practice
This philosophy translates into concrete decisions:
- No exceptions or RTTI
- Fixed memory strategies and object pooling
- Explicit ownership (
std::unique_ptr) - Integer-friendly rendering pipelines
- Compile-time modular systems
- Minimal dependencies
Acknowledgements
PixelRoot32 was heavily inspired by the work of nbourre and the ESP32 Game Engine project:GitHub - nbourre/ESP32-Game-Engine · GitHub
This project builds upon that inspiration with a focus on structure, determinism, and long-term maintainability.