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Top 23 C++ Simulation Projects
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5. OpenRCT2
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Bullet
Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.
For typical game physics engines... not that much. Math libraries like Eigen or Blaze use lots of template metaprogramming techniques under the hood that can help when you're doing large batched matrix multiplications (since it can remove temporary allocations at compile-time and can also fuse operations efficiently, as well as applying various SIMD optimizations), but it doesn't really help when you need lots of small operations (with mat3 / mat4 / vec3 / quat / etc.). Typical game physics engines tend to use iterative algorithms for their solvers (Gauss-Seidel, PBD, etc...) instead of batched "matrix"-oriented ones, so you'll get less benefits out of Eigen / Blaze compared to what you typically see in deep learning / scientific computing workloads.
The codebases I've seen in many game physics engines seem to all roll their own math libraries for these stuff, or even just use SIMD (SSE / AVX) intrinsics directly. Examples: PhysX (https://github.com/NVIDIA-Omniverse/PhysX), Box2D (https://github.com/erincatto/box2d), Bullet (https://github.com/bulletphysics/bullet3)...
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Well, it's a good video but... Hacker News?
On the related topic, you know how in Ford Mustang the engine noise is simulated so the engine would sound like a pre-emission-standards V8 even if it runs on just four? How about a similar thing for a motorcycle? You put on your noise-canceling head phones, and the phones emit a "noise-canceled" rev of an engine you choose. You can enjoy the sound of a Harley on a moped. And! Since it's your headphones only, you wouldn't even bother the public.
I think there is a startup potential on it somewhere. And the technology is here too: https://github.com/ange-yaghi/engine-sim
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JoltPhysics
A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West.
Project mention: Jolt: Physics and collision detection library, used by Horizon Forbidden West | news.ycombinator.com | 2024-09-03 -
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The-Powder-Toy
Written in C++ and using SDL, The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox, it simulates air pressure and velocity as well as heat.
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FluidX3D
The fastest and most memory efficient lattice Boltzmann CFD software, running on all GPUs via OpenCL. Free for non-commercial use.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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OpenCat
An open source quadruped robot pet framework for developing Boston Dynamics-style four-legged robots that are perfect for STEM, coding & robotics education, IoT robotics applications, AI-enhanced robotics application services, research, and DIY robotics kit development.
We have the APIs through OpenCat(https://github.com/PetoiCamp/OpenCat). You can control every servo movement via coding.
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Project mention: Robotics Simulation - Bridging the Gap Between Virtual and Real Worlds | dev.to | 2023-09-28
Open Robotics Resources - Provides guides and documentation for robotics simulation.
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sumo
Eclipse SUMO is an open source, highly portable, microscopic and continuous traffic simulation package designed to handle large networks. It allows for intermodal simulation including pedestrians and comes with a large set of tools for scenario creation.
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CHRONO
High-performance C++ library for multiphysics and multibody dynamics simulations (by projectchrono)
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Blender-FLIP-Fluids
The FLIP Fluids addon is a tool that helps you set up, run, and render high quality liquid fluid effects all within Blender, the free and open source 3D creation suite.
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Project mention: Gem5: Advanced Computer-System Architecture Simulator | news.ycombinator.com | 2024-08-06
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Project mention: OpenLoco: Modern, open source version of the classic transport simulation game | news.ycombinator.com | 2024-06-28
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ Simulation discussion
C++ Simulation related posts
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The Powder Toy
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SimSig: Railway Signalling Simulations
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Artificial LIfe ENvironment (ALIEN) is an artificial life simulation tool
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Torax is a differentiable tokamak core transport simulator
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Stunt Rally – a free rally racing game with editor
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The-Powder-Toy VS Sandboxels - a user suggested alternative
2 projects | 1 Feb 2024 -
Noise limit: yes
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A note from our sponsor - InfluxDB
www.influxdata.com | 7 Sep 2024
Index
What are some of the best open-source Simulation projects in C++? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | OpenRCT2 | 13,288 |
| 2 | Bullet | 12,410 |
| 3 | engine-sim | 8,641 |
| 4 | JoltPhysics | 6,419 |
| 5 | OpenTTD | 6,206 |
| 6 | The-Powder-Toy | 4,532 |
| 7 | FluidX3D | 3,785 |
| 8 | OpenCat | 3,495 |
| 9 | webots | 3,191 |
| 10 | sumo | 2,477 |
| 11 | AntSimulator | 2,234 |
| 12 | lammps | 2,179 |
| 13 | CHRONO | 2,169 |
| 14 | unrealcv | 1,883 |
| 15 | moose | 1,700 |
| 16 | Blender-FLIP-Fluids | 1,666 |
| 17 | pioneer | 1,614 |
| 18 | gem5 | 1,589 |
| 19 | SPlisHSPlasH | 1,559 |
| 20 | reactphysics3d | 1,501 |
| 21 | openmm | 1,469 |
| 22 | jsbsim | 1,312 |
| 23 | OpenLoco | 1,256 |
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