Engine Docs

Overview

Renboko provides a concise set of systems for 2D games:

• ServiceLocator — register and resolve global systems (InputSystem, Renderer2D, PhysicsWorld, AudioSystem).
• Scene system — `Scene` with lifecycle hooks: `Start`, `Update`, `FixedUpdate`, `Render`, `OnUnload`.
• Renderer2D — sprite batching, `DrawString`, and `Camera2D` transforms.
• AssetManager — `AcquireTexture`, `AcquireFont`, `AcquireSound` with ContentManager-first, filesystem-fallback behavior and reference counting.
• Physics — `Rigidbody2D`, `BoxCollider2D`, `CircleCollider2D` and simple collision resolution.
• UI — retained-mode UI elements (`UIButton`, `UILabel`, `UISlider`, etc.).

Initialization

Register core services early in EngineGame.Initialize(). Recommended order:

ServiceLocator.Register(new Renderer2D(graphicsDevice));
ServiceLocator.Register(new InputSystem());
AssetManager.Init(Content, GraphicsDevice);
SceneManager.Load(new MainMenuScene());

Asset loading

Prefer AssetManager.AcquireTexture("name.png") for textures. For fonts, build .xnb files with MGCB and place them in DemoGame/Content/ so AcquireFont or Renderer2D.LoadFont can load them reliably.

Recent fixes

• Fixed malformed solution header that caused dotnet build to fail.
• Removed unsafe reflection in SceneLoader and tightened nullability annotations.
• Improved AssetManager texture loading with filesystem fallback and safer async cache handling.

Where to look

• MainEngine/Engine — core systems implementation.
• API & Examples — common usage patterns and snippets.
• Getting Started — build and run instructions.