OpenLRR VS urho3d

The original game had a lot of bugs and was very prone to crashes that we cannot do much about. However if you try out the community decompilation project OpenLRR, this should work just the same and should have fixed the crash bugs! If not, one can report the bug on their GitHub and it might be fixed soon ^

If you want to run the original game, I'd recommend OpenLRR, it is a decompilation of the original game that fixes bugs and you should be able to run it on Windows 10 without any other fixes. Just replace your game's .exe with this one: https://github.com/trigger-segfault/OpenLRR/releases

I also use a tool called OpenLRR, which is a decompiled version of the game that attempts to fix many of its issues - most of the major random crash bugs the game used to have are fixed in this. It also allows you to mess around with a bunch of debug stuff.

Urho3D, an open source C++ game engine.

I believe Urho3d supports MacOS (see 'about' page on the legacy website).

Urho3D

If you're literally clueless your best bet is to first start learning with an existing clean-ish engine like Urho3D implementing whatever feature/screwing-around or start with a framework like nVidia's Donut that gets you your window and basic rendering in place.

I would recommend tracking through the gist of Urho3D's batch/batchqueue stuff as it's a reasonable setup that is very intelligible (if you speak C++), it's not the greatest thing on the planet but you should be able to roughly grok it in an afternoon. Doing draw batch-pumps greatly streamlines the final drawing code.

You could try Urho3D or its newer fork rbfx.

I use an engine called rbfx which is a fork of the Urho3D engine. A lot of it is just the fact that I've been using it for over a decade, so I am comfortable with it. I'm a programmer, not really comfortable with integrated editor engines such as Unity or Godot, and the easy C++ extensibility of the engine appeals to me. Plus it's decently powerful, and well supported on a lot of platforms (I build for Windows, WebGL, and very occasionally RPi for the most part) and is open source to satisfy that stubbornly libertarian side of my character.

You might be interested in Urho3D.

If you don't mind something experimental, there is a C# version of Urho3D that is in fairly active development. There is also a C#-scriptable branch of the Urho3D fork, rbfx, located here. Both of these projects are still pretty in-the-works, but are still pretty usable.