Box2D
Torque3D
Box2D | Torque3D | |
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35 | 12 | |
7,291 | 3,343 | |
- | 0.0% | |
0.0 | 1.8 | |
about 1 month ago | about 2 years ago | |
C++ | C++ | |
MIT License | MIT License |
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Box2D
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Blaze: A High Performance C++ Math library
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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Jolt Physics raylib: trying 3D C++ Game Physics Engine
Box2D: 2D engine used in Unity and also earlier versions of Godot. Open source.
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Rust Game Physics Engines: PhysX, Rapier, XPBD & Others
Box2D GitHub repo: erincatto/box2d
- Nebula is an open-source and free-to-use modern C++ game engine
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Linear code is more readable
Why is 600 lines too long? How are you able to make that judgment call without first knowing what the algorithm is even doing? People setting arbitrary limits like this is what leads to convoluted spaghetti, instead of just taking things on a case by case basis. Here’s a function from the Box2D code running a particularly complex algorithm for solving contact velocities https://github.com/erincatto/box2d/blob/411acc32eb6d4f2e96fc... .
It’s 310 lines long. It reads very well, and it looks very maintainable. It has very clear comments explaining the reasoning behind the harder parts of the code. Would you reject this code because it’s pretty long? I wouldn’t.
There is no such thing as too long or too short. There’s overengineered and there’s underengineered and there’s a sweet spot in the middle that has the perfect amount of engineering with the least amount of complexity (preferably no additional complexity than the original problem warranted). Sometimes, the problem at hand is inherently a large algorithm and requires many lines of code. Don’t split it up! It just makes it harder for future maintainers who now have to figure out if the additional functions are actually being used elsewhere or if they’re just there to make the code “pretty”.
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How would you implement a simple collision system?
There is always the approach of looking at how an existing engine is implemented, such as box2d: https://github.com/erincatto/box2d
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C++23: The Next C++ Standard
TIL Box2D must not be serious code because it doesn't use copious amounts of explicit temporaries[0].
And just for the record, I'm very glad Erin Catto decided to use operator overloading in his code. It made it much easier for me to read and understand what the code was doing as opposed to it being overly verbose and noisy.
[0]: https://github.com/erincatto/box2d/blob/main/src/collision/b...
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Make a game engine in C++
For Physics Box2d can be used as a simple starting point.
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Does anyone know any good open source project to optimize?
I suspect most C++ physics libraries like Box2D (https://github.com/erincatto/box2d) or Bullet3 (https://github.com/bulletphysics/bullet3) could really benefit a lot from SIMD.
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what to start learning
for 2D physics have a look at Box2D it's amazing https://box2d.org/
Torque3D
- Torque 3D: a C++ game engine
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Ask HN: Released games built on FOSS engines?
On a similar note, released games with open sourced code: https://osgameclones.com/?tag=official
https://torque3d.org was used on Airship Dragoon, Marble Blast Gold, Penny Arcade Adventures, Legions: Overdrive and descends from the original Tribes engine.
Hellbreaker, Bit Champs with https://u3d.io
And plenty of successful games with Ogre, including Torchlight: https://www.ogre3d.org/showcase
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Alternative Game Engines for Marooned Unity Developers
Torque 2D/3D: Didn't do too much digging around on this one, but both versions are MIT licensed like Godot, but it seems like the project is a little more mature, with built-in multiplayer support. Could be worth looking into as an alternative to Godot if you really want something with MIT licensing.
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Do people still make games in Java?
But from now on, I think I will abandon that, and continue with Torque3D engine : https://torque3d.org/
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How do you protect your game assets from infringement? Asking for suggestions
Torque3D- This one seems great for beginners, as it's free and open-source. The downside is, I'm not sure if it has enough features for complex projects or how secure it is.
- Windows XP Game development engine
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Devs not baking monetisation into the creative process are “fucking idiots”, says Unity’s John Riccitiello
Torque3D (the engine used to make Tribes 2, now open-source)
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Star Citizen, a videogame stuck in development for 10+ years. Scam? Something completely fresh? r/Gaming discusses
No lie, that overall looks a lot like a game done for a senior design project 15+ years ago using Garage Games' (now https://torque3d.org/) RTS kit.
- Torque3D
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I want to make a game for Linux. Where do I even start?
Torque
What are some alternatives?
Bullet - Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.
Godot - Godot Engine – Multi-platform 2D and 3D game engine
Chipmunk - A fast and lightweight 2D game physics library.
Panda3D - Powerful, mature open-source cross-platform game engine for Python and C++, developed by Disney and CMU
raylib - A simple and easy-to-use library to enjoy videogames programming
Grit - Grit Game Engine
LiquidFun - 2D physics engine for games
Banshee Engine
PhysX - NVIDIA PhysX SDK
squirrel - Official repository for the programming language Squirrel
box2d-lite - A small 2D physics engine
Polycode - Polycode is a cross-platform framework for creative code.