Orx vs Urho3D

Powerful config system that makes orx data-driven and provides an easy to use load/save system.

Good friendly development community ready to help each other with tips and advice for setting up and best practices.

Automatic hot-loading of resources upon modification on disk, shortens drastically iteration times.

Written in C with high emphasis on memory and CPU efficiency.

Supports Windows, Linux, Mac OS X, iOS and Android.

Orx is a Data Driven engine that greatly reduces required code. You can configure object definitions, bodies, cameras, sound, animation, event tracks, etc.

GLSL code can be added straight into data configuration files and can be applied to any texture: background or objects whivh allows for some amazing effects. All GLSL versions are supported, again by providing the shader language version in your configuration file.
Parameters are supported and values over time for shader animation.

Clock system that provides time consistency and allows time stretching + high precision timers

Color and translation FX are simple to configure and apply to objects.

Includes a chaining graph & custom animation events for synchronization.

Uses the zlib license. Lets you use Orx for free for any kind of projects, even for commercial ones.

All input devices are fully supported: Joysticks, Mouse, Gamepad, Keyboard and Touchscreen. Multiple physical devices and be mapped the same binding.

Rated the fastest engine in the OpenFL’s BunnyMark since October 2015.

Samples for sound effects, or streams for music. All sounds can be groups via audio buses just like in a typical DAW (Digital Audio Workstation).
All sounds can be spatial relative to the camera.

Camera/viewport scheme allowing multiple views displayed with camera translation, zoom and rotation.

Fragment (pixel) shader support, render to texture, MRT, easy composition and custom rendering support.

Integrated runtime profiler (with graphical display) to easily spot which parts of your game need to be optimized.

Supports .bmp, .png, .jpg, .tga and .dds

Out of the box Windows support for:

• Visual Studio
• Codelite
• CodeBlocks
• gmake

Out of the box Mac support for:

• XCode
• Codelite
• gmake

Out of the box Linux support for:

• Codelite
• CodeBlocks
• gmake

Orx provides a excellent c++ wrapper for object oriented design, called: orx/Scroll. You can, of course, roll your own.

The entire engine is open source and makes use of other open source libraries. Source code is licensed under MIT and available on GitHub.

The documentation for Urho3D can be split in two parts: auto-generated from class references and documentation written to cover the various aspects, features and systems of the engine. The written documentation is pretty good. It covers most of the aspects of the engine in clear and understandable English.

There are a lot of sample projects included with the engine for both C++ and Angelscript. They are mostly very simple applications built to demonstrate the engines capabilities and features.

Only use what you need.

Builds are quite fast, aids in rapid development.

Urho3D is written in a modular and super-clean way, so that it can be integrated into the other parts of your game seamlessly.

Bugs are usually fixed that same day. Core devs are very active on forums. New features are always being worked on. HTML5, DirectX11, and OpenGL3.1 support have recently been added (as of 4/15/15).

You can configure rendering pipeline.

There are no lights limits per mesh.

Information on enabling OR support can be found here.