Learn URHO3D with Real Code Examples
Updated Nov 24, 2025
Architecture
Scene -> root container for nodes
Node -> position, rotation, scale, parent-child hierarchy
Components -> behavior attached to nodes (Mesh, Light, Camera, RigidBody)
Application class -> main entry point
Event system -> handles signals and messages
Rendering Model
Scene graph traversal
Shader-based rendering
Lighting and shadow systems
Particle and post-processing effects
Level-of-detail (LOD) management
Architectural Patterns
Node-component system
Event-driven messaging
Resource caching
Application class for main loop
Service locator pattern for shared systems
Real World Architectures
2D/3D desktop games
Mobile games
Educational simulations
VR/AR prototypes
Interactive visualizations
Design Principles
Lightweight C++ core
Node-component architecture
Open-source and extensible
Cross-platform support
Integrated physics and shaders
Scalability Guide
Use LOD and batching for large scenes
Optimize physics updates
Profile CPU/GPU usage
Use memory-efficient assets
Reuse Components and Nodes where possible
Migration Guide
Upgrade old projects to latest engine version
Check deprecated APIs
Update resources/formats if needed
Test physics and rendering compatibility
Validate cross-platform builds