specs
entt
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specs | entt | |
---|---|---|
13 | 79 | |
2,402 | 9,428 | |
1.1% | - | |
7.2 | 9.8 | |
3 months ago | 7 days ago | |
Rust | C++ | |
Apache License 2.0 | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
specs
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Why ECS pattern is popular in Rust?
The question arises from seeing a plethora of projects using ECS: hecs , Bevy , specs, legion
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Want to learn how to make games with Rust and the Bevy game engine? Now is a great time to jump in with the recently released Bevy version 0.10. I created a Bevy 0.10 beginner tutorial video series for those looking to learn and join our game dev community!
Instead, I'm using now the specs Library. It's a pure ECS library and much less powerful, without any visualization capabilities, but its works for me :)
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Is implementing an ECS in rust a bad idea for a beginner project?
writing an ECS is defined a challenging project, no matter the language or if you're a beginner. although it is entirely possible to write one in Rust, check out specs and bevy_ecs for examples.
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Ecs fundamentally at odds with borrow checker.
specs
- Goggles - A specs-derived DIY library for doing ECS
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Veloren is releasing 0.13!
The official 3d rendering client uses a custom engine called Voxygen. They use Specs for logic.
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How are rust devs doing?
Rust has a delightful ECS library, specs, that I absolutely love. It has safe multi-threaded execution built right in, which is fantastic for the pretty parallelizable work I was doing. Concurrency in C++ is nasty business on the best of days, and I've run into so many nasty bugs with the custom system I've had to build out to fit the web's weird threading model.
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Programming a Rogue-Like with Rust
Man, this Specs [0] library is so strange to me, coming from a Unity background. Is there some sort of comparison as to why one way is better than the other?
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Bellclone: a simple 2D game about jumping
Hi everyone - I just picked up one of my long-unfinished side project built with Rust and would like to show it to you here. It's a clone of the famous(?) Winterbells game. It's written entirely in Rust and uses OpenGL and an entity-component-system architecture ([the `specs` crate](https://crates.io/crates/specs)) (still learning), no game engine.
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There are a *lot* of actor framework projects on Cargo.
Wait did the person at your company write specs or something else because they weren't pleased with it? I don't know much about amethyst and vaguely know about entity component systems but I watched a talk on someone making a game with amethyst and was pretty impressed -- it looked thoroughly approachable and I do not doubt the performance is there (since the whole reason you do ECS is performance).
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?
bevy - A refreshingly simple data-driven game engine built in Rust
flecs - A fast entity component system (ECS) for C & C++
Amethyst - Data-oriented and data-driven game engine written in Rust
Hazel - Hazel Engine
ggez - Rust library to create a Good Game Easily
raylib - A simple and easy-to-use library to enjoy videogames programming
Crayon - A small, portable and extensible game framework written in Rust.
flecs-lua - Lua script host for flecs
piston - A modular game engine written in Rust
Roguelike-Tutorial-2021 - Roguelike tutorial written hard with GDscript
RG3D - 3D and 2D game engine written in Rust [Moved to: https://github.com/FyroxEngine/Fyrox]
UnrealCLR - Unreal Engine .NET 6 integration