Introduction

Debugging a complex game with hundreds of entities, dozens of component types, and intricate system interactions is like trying to understand a symphony while standing inside the orchestra pit. Everything's happening at 60 frames a second, the console is scrolling faster than you can read, and that critical bug only appears when three specific systems interact during frame odd frames of gameplay.

Traditional web browser debugging approaches fall short when dealing game architectures.

What You'll Build

This course will write a few more Systems that can be added to the World entity, hidden when not wanted, configured seperately and also how to use the common interface of ECS to automatically visualize and adjust component data without asking for it explicitly.

1. Real-Time Entity Inspection

Move beyond console archaeology with GUI a GUI Console Overlay that display entity data directly on screen. Your debug system automatically generates clean, organized displays for any entity's component data—position vectors, health values, AI states, inventory contents. Press a key to cycle between entity debug panels, watching your game's internal state update in real-time without breaking the flow.

Interactive Parameter Tuning

Build live component editors using Dat.GUI that automatically generate sliders, dropdowns, and input fields for every property in your components. Adjust jump height, tweak AI aggression, modify physics constants, or change visual effects—all while your game runs. No more compile-test-repeat cycles when balancing gameplay mechanics.

Advanced Inspector Integration

Transform Babylon.js's built-in inspector from a generic 3D tool into a custom debugging powerhouse. Add performance monitoring graphs, entity system browsers, scene statistics panels, and real-time warnings about optimization issues. Create developer tools that solve your specific debugging challenges.

Temporal Control System

Gain godlike control over time itself with a debugging system that can pause, slow down, speed up, or step through your game frame by frame. Debug complex collision interactions by freezing time at the moment of impact, or slow down AI decision-making to understand behavioral patterns. Frame-by-frame stepping lets you examine single-frame events that normally happen too fast to observe.

Spatial User Interfaces

Create world-attached GUI elements that bridge the gap between 3D game objects and 2D interface elements. Click on a spaceship and see its control panel appear beside it. Select a building and watch its production statistics hover above it. These spatial interfaces make debugging feel natural and intuitive.