entt
FTXUI
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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++
FTXUI
- Functional Terminal User Interface
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C++ Game Utility Libraries: for Game Dev Rustaceans
GitHub repo: ArthurSonzogni/FTXUI
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Library for NES style terminal game.
Background: I want to make a NES Tetris) clone for the terminal, with full resolution, this is achievable through using this ▀ character, and defining back and foreground color. This would result in a 1x2 pixel and by making the game width 256x120 characters this would provide full resolution. I made some tests, creating my own encoding for the different sprites and optimizing everything, which resulted in very quick printing times, even with a normal terminal. Nearly fast enough for the full 60Hz that the NES has, when printing the whole screen. The fact that i don't need to reprint the background (except maybe a tetris), makes 60Hz a kinda realistic goal. My main concern is, that there could occur kind of a screen tearing effect, which i really want to avoid. AFAIK, ncurses has a way to print the whole "window" with a function call to avoid this issue, however I had a lot of issues when trying to use ncurses to print the entire background and figured, that there are better alternatives. I also tried FTXUI and whilst the experience of giving each "pixel" a fore- and background color was much better, i didn't quite find a way to refresh the screen like ncurses. (i think there is some kind of way with the ScreenInteractive class, but i didn't get that to work, and it seemed like there was not a way to color each pixel. with InteractiveScreen you can make your own components with the whole "text()" thing, but this isn't really what i need)
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Should I give up?
Try this library for console https://github.com/ArthurSonzogni/FTXUI
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Cross platform terminal UI?
Depends on which level of "UI" you want. Personally I like https://github.com/ArthurSonzogni/FTXUI , but if you want to do those old TUI things then probably the (n/pd)curses libraries.
- Function composition in modern C++
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What are some C++ projects with high quality code that I can read through?
I find openMVG very decent, FTXUI might be a good one and nlohmann's json library is also pretty nice. I don't really know of any project that strictly adheres to the core guidelines, except maybe for some of Jason Turner's (sample) projects.
- Owl: A toolkit for writing command-line user interfaces in Elixir
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I have made a physics simulator that replicates projectile motion with quadratic drag! Please feel free to download and compile it. Let me know of any bugs!
Okay stupid suggestion I know but I've recently been learning the FTX UI library which basically adds a little bit of UI programming to the terminal and it has canvas that lets you plot pixel by pixel.
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Text UI components like “ncurses”
No affiliation with any ponzi schemes https://github.com/ArthurSonzogni/FTXUI
What are some alternatives?
flecs - A fast entity component system (ECS) for C & C++
ncurses - snapshots of ncurses - see http://invisible-island.net/ncurses/ncurses.faq.html (no pull requests are accepted)
Hazel - Hazel Engine
imgui - Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies
raylib - A simple and easy-to-use library to enjoy videogames programming
notcurses - blingful character graphics/TUI library. definitely not curses.
flecs-lua - Lua script host for flecs
rich - Rich is a Python library for rich text and beautiful formatting in the terminal.
Roguelike-Tutorial-2021 - Roguelike tutorial written hard with GDscript
imtui - ImTui: Immediate Mode Text-based User Interface C++ Library
UnrealCLR - Unreal Engine .NET 6 integration
Turbo Vision - A modern port of Turbo Vision 2.0, the classical framework for text-based user interfaces. Now cross-platform and with Unicode support.