JoltPhysics
entt
JoltPhysics | entt | |
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26 | 79 | |
5,627 | 9,528 | |
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9.6 | 9.8 | |
5 days ago | 3 days ago | |
C++ | C++ | |
MIT License | MIT License |
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JoltPhysics
- Simulation Islands
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Bevy XPBD: A physics engine for the Bevy game engine
There is now also https://github.com/jrouwe/JoltPhysics which is used in Horizon Forbidden West.
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Has anyone used Jolt physics engine?
Apparenty, this is a game engine used by Horizon Forbidden West and I was curious what you all think about this project: https://github.com/jrouwe/JoltPhysics
- After months of work, I'm excited to share the first release of Godot Jolt, an extension that integrates the Jolt physics engine into Godot, demonstrated using GDQuest's RoboBlast
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Rust – Are We Game Yet?
As far as physics engines go: Jolt currently seems to kinda disrupt the decade-long equilibrium, at least as far as I'm aware:
https://github.com/jrouwe/JoltPhysics
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X4's Upcoming Multiplayer Features Are a Huge Step Forward
No, they replaced Bullet with Jolt. That is considerably more than "some adjustment", regardless of what you think of the result.
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Oof. 7fps for an incredibly simple rocket that is well under 100 parts.
A multithreaded rigid-body engine for games: https://github.com/jrouwe/JoltPhysics
- zig-gamedev project: zphysics v0.0.4 - Zig API and C API for Jolt Physics
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Godot for AA/AAA game development – What's missing?
Would you rather they use Jolt Physics? https://github.com/jrouwe/JoltPhysics S&box is thinking of using this engine instead of Source 2's Rubicon. As they say, maybe someone could / would hook up Jolt as a GDExtension.
- Where and how can I learn to make simulation programs? I like to be a simulation developer!
entt
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Using Jolt with flecs & Dear ImGui: Game Physics Introspection
EnTT is a popular alternative to flecs for C++, which has different performance/memory characteristics.
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Focus: A simple and fast text editor written in Jai
https://pastebin.com/VPypiitk This is a very small experiment i did to learn the metaprogramming features. its an ECS library using the same model as entt (https://github.com/skypjack/entt). In 200 lines or so it does the equivalent of a few thousand lines of template heavy Cpp while compiling instantly and generating good debug code.
Some walkthrough:
Line 8 declares a SparseSet type as a fairly typical template. its just a struct with arrays of type T inside. Next lines implement getters/setters for this data structure
Line 46 Base_Registry things get interesting. This is a struct that holds a bunch of SparseSet of different types, and providers getters/setters for them by type. It uses code generation to do this. The initial #insert at the start of the class injects codegen that creates structure members from the type list the struct gets on its declaration. Note also how type-lists are a native structure in the lang, no need for variadics.
Line 99 i decide to do variadic style tail templates anyway for fun. I implement a function that takes a typelist and returns the tail, and the struct is created through recursion as one would do in cpp. Getters and setters for the View struct are also implemented through recursion
Line 143 has the for expansion. This is how you overload the for loop functionality to create custom iterators.
The rest of the code is just some basic test code that runs the thing.
- Crash Course: entity component system
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Introducing Ecsact
Since we wanted a common game simulation that would be on both the server and the client we looked into a few libraries that would fit our ECS needs. It was decided we were going to write this common part of our game in C++, but rust was considered. C++ was a familiar language for us so naturally EnTT and flecs came up right away. I had used EnTT before, writing some small demo projects, so our choice was made based on familiarity. In order to integrate with Unity we created a small C interface to communicate between our simulation code and Unity’s C#. Here’s close to what it looked like. I removed some parts for brevity sake.
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Sharing Saturday #472
Are you sure you don't want to use a C++ package manager? Libtcod is on Vcpkg and with that setup you could add the fmt library or EnTT. fmt fixes C++'s string handling and EnTT fixes everything wrong with the entities of the previous tutorials.
- Where can I find the juiciest, most complex and modern c++ code?
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What are the limits of blueprints?
There's also a performance question. While we can now use Blueprint nativization to convert Blueprints to C++ the result will be a fairly naive version, fast enough for most purposes but not if you're trying to push every bit of performance. This is where you're looking at making sure you're hitting things such as using the CPU cache as well as possible for an ECS system (Look at ENTT or Flecs if you want to see what they're about and why you'd want one), or a system needing to process massive amounts of data quickly such as the Voxel Plugin.
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any resources for expanding on ECS?
For a modern engine you’re probably best looking at Unity’s DOTS. You may also want to check out some of the different open source ECS libraries such as flecs and EnTT are two popular ones for C++, but there’s lots of them. Largely you’ll see lots of different approaches taken, all with their own pros and cons. Not all of them will be performant (some focus more on the design benefits) while others will be optimised for certain use cases. What you should prioritise will depend on your specific needs.
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DynaMix 2.0.0 Released
You can think of DynaMix as combining one of these libraries with an ECS like entt(https://github.com/skypjack/entt)
- Flecs – A fast entity component system for C and C++
What are some alternatives?
BEPUphysics - Pure C# 3D real time physics simulation library, now with a higher version number.
flecs - A fast entity component system (ECS) for C & C++
tinyphysicsengine
Hazel - Hazel Engine
Bullet - Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.
raylib - A simple and easy-to-use library to enjoy videogames programming
godot-jolt - Godot Jolt is a Godot extension that integrates the Jolt physics engine
flecs-lua - Lua script host for flecs
small3dlib
Roguelike-Tutorial-2021 - Roguelike tutorial written hard with GDscript
rapier - 2D and 3D physics engines focused on performance.
UnrealCLR - Unreal Engine .NET 6 integration