C++

C++ is a popular and widely used mid-level language. It was designed as an extension of the C language.

GitHub: https://github.com/topics/cpp
Wikipedia: https://en.wikipedia.org/wiki/C%2B%2B
Created by: Bjarne Stroustrup
Released: October 1985
Aliases: cplusplus, c-plus-plus, cpps, cpp98, cpp03, cpp11, cpp14, cpp17, cpp20, cpp0x, cpp1y, cpp1z, cpp2a, cplusplus-11,
Last updated: 2026-06-29 00:06:50 UTC
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https://github.com/hwhsu1231/cmake-conan-setup

CMake toolchain for integration with Conan using cmake-conan

c cmake cmake-toolchain conan cpp package-manager

Last synced: 23 Oct 2025

https://github.com/ki-seki/solutions

此仓库包括我所做过的来自各大题库的 OJ 算法题的题解，这些题库包括：浙江大学计算机程序设计能力考试（PAT）题库，UVa 题库，Codeup 题库，洛谷题库，北京大学 OJ 题库（POJ），安徽科技学院 ACM 题库（AOJ）......目前在主攻 PAT，完成度已过 55.6%，其中部分题解提供多种方法、以及我给出的测试样例。

aoj codeup cpp lanqiao luogu nowcoder oj-solutions pat poj programming-contests uva

Last synced: 07 Oct 2025

https://github.com/shahriarrezghi/serio

Fast Lightweight Header-only C++ Serialization Library

bsd-3-clause bsd-license cmake cpp cxx deserialize fast-library header-only serialization serialization-library serializer serio

Last synced: 12 Oct 2025

https://github.com/llnl/smoothg

Mixed graph Laplacian upscaling and solvers

cpp graph math-physics solver

Last synced: 29 Apr 2025

https://github.com/yi-ge/cpp-practice

C++ 算法练习。

algorithm algorithms c cpp data-structures leetcode leetcode-solutions

Last synced: 11 Oct 2025

https://github.com/ali-elshorpagi/data_structures

Data Structures in C++

avl-tree binary-heap binary-search-tree binary-tree cpp data-structures doubly-linked-list hash-table problem-solving queue singly-linked-list stack template trie-tree vector

Last synced: 28 Apr 2025

https://github.com/oktonion/cpp-fast-delegates

Header-only extension for C++ Fast Delegates of Don Clugston (C++98 compatible)

cpp cpp03 cpp11 cpp98 crossplatform delegate delegates fast fast-delegates

Last synced: 10 Apr 2025

https://github.com/iwatake2222/digitalcamera_raspberrypi

A project to create a digital camera with Raspberry Pi in Linux standard way such as ioctl

cpp devicedriver raspberrypi

Last synced: 17 Oct 2025

https://github.com/kimkulling/cppcore

My core for most of my projects ...

cpp

Last synced: 22 Mar 2025

https://github.com/HunterBelanger/papillon-ndl

Papillon Nuclear Data Library

cpp montecarlo nuclear-engineering nuclear-power python

Last synced: 04 Apr 2025

https://github.com/alexeytaranov/ue4_gumbo

HTML parser for Unreal Engine 4

blueprint cpp html parser ue4 ue4-plugin

Last synced: 24 Dec 2025

https://github.com/hilkojj/dibidab-engine

Small ECS-based Game Engine with Lua scripting

browser cpp ecs game-engine linux lua opengl windows

Last synced: 10 Sep 2025

https://github.com/nickdiego/gstreamer-tests

Simple GStreamer test programs for learning puporses.

c cpp gstreamer learning

Last synced: 13 Apr 2025

https://github.com/Emmet-Hayes/BatSynth

A polyphonic synthesizer with two oscillators implemented in C++ (with JUCE)

audio cplusplus cpp juce juce-framework synthesizer

Last synced: 08 May 2025

https://github.com/ArkEcosystemArchive/cpp-crypto

A simple Cryptography Implementation in C++ for the Ark Blockchain.

ark blockchain cmake cpp crypto dpos

Last synced: 12 May 2025

https://github.com/basemax/eweather

The eWeather is a GUI application that allows you to get the weather forecast for any city in the world. It is written in C++ and Qt and uses the OpenWeatherMap API to get the weather data.

cpp cpp-qt qml qml-applications qml-components qml-files qml-samples qt qt-quick qt-ui qt5 qt6 qt6-gui qt6-ui qtcreator weather weather-app weather-application weatherapp

Last synced: 05 May 2025

https://github.com/basemax/simple-jit-compiler

This project is designed to illustrate the mechanism used in JIT compilers development.

c compiler compiler-jit cpp jit jit-compiler

Last synced: 05 May 2025

https://github.com/tichau/sfml-starter

This project is an empty project completely setup to build an C++ SFML application using Visual Studio Code.

cpp sfml starter vscode

Last synced: 14 Apr 2025

https://github.com/coding-enthusiast9857/open-source-contributions

This is an open-source contribution opportunity. It is for everyone. So, Hurry up...!! Don't forget to spread love and if you like give a ⭐️

ai algorithms algorithms-and-data-structures c cpp csharp dsa games helloworld java matlab ml open-source projects python python3

Last synced: 11 Apr 2025

https://github.com/asartori86/build_system_tools

Gentle introduction to the basics of CMake and meson, and unit-testing with gtest.

build-system cmake cpp gtest meson unit-testing

Last synced: 30 Dec 2025

https://github.com/pozharliev/maze-project-2021

Project about a game for the Babylon tower. Powered by olcPixelGameEngine.

cpp cpp17 maze maze-generator maze-solver olcpixelgameengine powershell

Last synced: 19 Mar 2025

https://github.com/hxndev/3d-solar-system-scene-using-opengl

This was my Computer Graphics' project. In this i used OpenGL and Glut to create a 3D Solar System Scene. Its without textures and wrapping. Just the most basic functionalities.

3d code computer-graphics computer-graphics-opengl computer-graphics-project cpp glut glut-library graphics opengl solar-system

Last synced: 16 Jul 2025

https://github.com/cschladetsch/kai

KAI is a distributed computing model written in modern C++ and is cross-plaftorm. Using custom language translators and an executor, KAI provides full reflection, persistence and cross-process communications without having to modify existing source code. KAI Comes with an automated, generational tricolor garbage collector, and Console- and Window-based interfaces.

ast-walker c-plus-plus cmake cpp kai language lexer networking parser raknet stack tests

Last synced: 13 Apr 2025

https://github.com/yeaseen/angrybirds_igraphics

:performing_arts: A casual puzzle video game implemented in C/C++ with OpenGL iGraphics for GUI as a term project assignment of C Programming Language Sessional course, CSE102 of CSE, BUET.

angry-bird-game angry-birds c cpp cse-buet igraphics-project opengl visual-studio

Last synced: 14 Aug 2025

https://github.com/jonathan-foucher/snow-depth-arduino

This project was made by Anis Cerbah and myself in 2016 during our electrical engineering bachelor degree at Lille University of Science and Technology. The goal was to build a device able to measure the snow depth with an Arduino board.

arduino-uno cpp kicad-footprints student-project

Last synced: 13 Apr 2025

https://github.com/szymonmaszke/numpp

Research library for compile time optimization

algebra compilation compile-time contributions cpp cpp17 docker krylov-methods matrices numerical-library numerical-methods numerical-optimization research research-paper research-project symbolic-computation travis-ci

Last synced: 20 Jun 2025

https://github.com/analogfeelings/shadersave

A screensaver for Windows that can run Shadertoy shaders locally with little to no modification.

agplv3 cpp cpp20 customization glsl glsl-shaders open-source ricing screensaver screensavers shaders shadertoy shadertoy-compatibility

Last synced: 18 Jun 2025

https://github.com/arsenic-atg/8085

8085 emulation library implemented in C++

8085 8085-simulator 8085simulator cmake cpp cpp20 cpu-emulator emulation emulator good-first-issue microprocessor

Last synced: 05 Jul 2025

https://github.com/ashtum/smpp

A C++ implementation of SMPP protocol on Boost.Asio

boost-asio coroutines cpp smpp smpp-client smpp-server

Last synced: 13 Apr 2025

https://github.com/qengineering/tensorflow_lite_pose_rpi_32-bits

TensorFlow Lite Posenet on bare Raspberry Pi 4 at 5.0 FPS

armv7 bare-raspberry-pi cpp deep-learning frame-rate high-fps lite posenet raspberry-pi-4 tensorflow-examples tensorflow-lite testtensorflow-lite

Last synced: 13 Apr 2025

https://github.com/qengineering/tensorflow_lite_classification_rpi_64-bits

TensorFlow Lite classification on a bare Raspberry Pi 4 with 64-bit OS at 23 FPS

aarch64 armv7 armv8 bare-raspberry-pi cpp deep-learning high-fps inception inceptionv2 inceptionv4 lite mobilenet raspberry-pi-4 tensorflow-examples tensorflow-lite testtensorflow-lite ubuntu1804

Last synced: 13 Apr 2025

https://github.com/tereius/onvifmonitor

📹 A proof of concept of an ONVIF camera viewer/monitor

cpp gsoap onvif qml qt

Last synced: 15 Jul 2025

https://github.com/ndhana94/ros2_wheeltec_n100_imu

ROS2 driver pkg for wheeltec N100 IMU module.

cpp imu rclcpp ros2 wheeltec wheeltec-n100

Last synced: 02 Mar 2026

https://github.com/djkovrik/w3modmerger

Mod merging tool for The Witcher 3: Wild Hunt [C++, Qt5]

cpp qt5 witcher-3

Last synced: 06 Oct 2025

https://github.com/akagi201/learning-c-cpp

Codes when learning C and Cpp

c cpp learning tutorial

Last synced: 01 Mar 2026

https://github.com/langya466/trafficmonitor-claude-usage

在 TrafficMonitor 任务栏显示 Claude 订阅用量（5h/7d），请求前校验 Cloudflare 出口节点(colo/loc)，不对就跳过并通知。C++/WinHTTP，单 DLL。

anthropic claude claude-code cpp plugin taskbar trafficmonitor usage-monitor windows winhttp

Last synced: 31 May 2026

https://github.com/luncliff/eclair

Fast setup of JNI + Gradle project for (Korean) C++ developers

cpp example-project gradle jni jni-sample

Last synced: 25 Apr 2025

https://github.com/robert076/ubb-computer-science

The courses I took at UBB during my Bachelor's in Computer Science. A collection of my assignments, exams, projects, labs, lecture notes, and preparation materials for them, including extra work.

assembly cpp java lisp prolog python ubb ubb-cluj ubb-computer-science ubb-fmi

Last synced: 09 Oct 2025

https://github.com/berndporr/cppthread

Generic C++ Thread class (very thin wrapper around std::thread)

cpp linux thread thread-library windows wrapper-api

Last synced: 26 Apr 2025

https://github.com/skyzh/bplustree

🌲 Fully unit-tested B+ tree with basic paging implemented in C++

bplus-tree bplustree clion cmake cpp

Last synced: 27 Oct 2025

https://github.com/michaeltroger/feature-matching-native-android

Augmented Reality Template Matching (Feature Matching) using OpenCV 4 for >= Android 5 using the NDK and an async approach (Coroutines)

android augmented-reality augmented-reality-applications computer-vision cpp feature-matching ndk ndk-sample opencv template-matching

Last synced: 03 Mar 2026

https://github.com/hxndev/password-cracker-using-brute-force-algorithm

This was our Final Project for Distributed Computing. In this we had to create a distributed system that will use the Brute Force Algorithm to crack a password from the etc/shadows file of Ubuntu as all the passwords are stored there. We used OpenMP and MPICH for this implementation.

brute-force bruteforce-password-cracker code cpp crack distributed-computing distributed-systems mpi mpi-library openmp openmp-parallelization openmpi parallel-computing password password-cracker password-cracking

Last synced: 07 May 2025

https://github.com/frabert/ogler

Use GLSL shaders in REAPER

cpp reaper reaper-plugin vulkan

Last synced: 12 Apr 2025

https://github.com/vkayy/vkdb

A time series database engine in C++.

cpp database time-series

Last synced: 05 Oct 2025

https://github.com/astrodynamic/3dviewer-project-in-qt-cpp

Viewer3D is a C++ based 3D viewer application built with Qt that allows loading and transforming 3D models with a GUI. It requires CMake, C++ and C languages, assimp library, and Qt libraries, among others. To use it, launch the application, load a model, use transformation tools, and modify rendering options.

3d 3d-graphics 3d-models animation assimp cpp glsl graphics gui opengl patterns qt rendering transformation-matrix widgets

Last synced: 20 Sep 2025

https://github.com/panda-official/waveletbuffer

A universal C++ compression library based on wavelet transformation

compression cpp cpp20 signal-processing wavelet wavelet-transform

Last synced: 31 Aug 2025

https://github.com/moodyhunter/moodyapi

Server, client and other components for Moody's Infrastructure.

android cpp golang grpc mui nextjs nodejs oled oled-display-ssd1306 protobuf qt raspberry-pi react rust sql typescript yarn

Last synced: 16 Jun 2025

https://github.com/captain-woof/powerwoof

A collection of handy C#, Powershell and C++ POCs, concepts and examples to aid in pentesting.

cpp csharp pentesting-tools pentesting-windows poc powershell windows

Last synced: 06 Jul 2025

https://github.com/msdeep14/algorithms-practice

solutions to popular interview questions

algorithms algorithms-and-data-structures cpp data-structures geeksforgeeks geeksforgeeks-cpp geeksforgeeks-dsa geeksforgeeks-interview-prep geeksforgeeks-solutions interview interview-practice interview-preparation interview-questions

Last synced: 13 Oct 2025

https://github.com/sudip-mondal-2002/shooter-game

A shooting game built on Unreal Engine

cpp shooting-game unreal-engine-4

Last synced: 04 Apr 2026

https://github.com/apozinn/kraftaeditor

Fast, lightweight and cross-platform code-editor

application code-editor cpp cross-platform desktop-app developer-tools wxwidgets

Last synced: 01 Jun 2026

https://github.com/myscale/tantivy-search

Tantivy-search is a C++ wrapper for Tantivy, a full-text search engine written in Rust. It is designed to integrate with MyScaleDB and ClickHouse.

clickhouse cpp myscale myscaledb rust search-engine

Last synced: 28 Jan 2026

https://github.com/heatxd/gekkonet

P2P Rollback Game Networking SDK

c cpp game-development library netcode networking rollback-netcode sdk

Last synced: 13 Feb 2026

https://github.com/mohitjaisal/codingbooks

As you begin your path on becoming a coding specialist it is always pleasant to find good sources of information. Many computer languages might be tricky to learn at the beginning so you need reliable references to double-check your mistakes and learn how to not make them again.

books c coding coding-interview codingbooks cpp hacktober hacktoberfest hacktoberfest-accepted hacktoberfest2021 java python

Last synced: 12 Oct 2025

https://github.com/algosup/2024-2025-project-3-quickest-path-team-6

PathQuick is a high-performance software solution designed to calculate the quickest path between two landmarks in the United States.

algorithms astar-algorithm cpp csv dijkstra-shortest-path json opensource rest-api server weighted-graphs xml

Last synced: 03 Mar 2026

https://github.com/chantsune/py_string

A library that provides methods equivalent to Python 3's str class in C ++

c-plus-plus cpp python string

Last synced: 07 Aug 2025

https://github.com/alex2772/hackers-mc-launcher

Free and open source Minecraft and other games launcher

cpp launcher minecraft minecraft-launcher qt qt5

Last synced: 27 Nov 2025

https://github.com/moduscreateorg/network-rgb-matrix-display

A library for helping drive large arrays of RGB Matrices with Raspberry Pis

boost-asio cmake cplusplus cpp example-project iot iot-application maker multi-threading raspberry-pi rgb-led rgb-matrix

Last synced: 07 Sep 2025

https://github.com/toxe/example-cpp-ci-project

Example C++ CI Services Comparison supporting Linux, Mac, Windows and GCC, Clang (libc++ and libstdc++), MSVC and Clang-cl

appveyor ci circleci comparison continuous-integration cpp example github-actions-ci travis-ci

Last synced: 23 Apr 2025

https://github.com/qengineering/tensorflow_lite_ssd_jetson-nano

TensorFlow Lite SSD on a Jetson Nano 28.5 FPS

aarch64 cpp gpu-acceleration gpu-delegate jetson-nano mobilenet-ssd ssd-mobilenet tensorflow-examples tensorflow-lite

Last synced: 22 Feb 2026

https://github.com/aldergrounds/samp-injector

SA-MP Injector is a versatile software package composed of an executable, a DLL, and equivalent libraries for multiple programming languages. It injects samp.dll for SA-MP (San Andreas Multiplayer) or samp.dll and omp-client.dll for OMP (Open Multiplayer), enabling game launch via command line with customizable parameters to connect to a server.

ag-samp aldergrounds command-line cpp dll dll-injection dll-injector exe executable gtasa library multiplayer omp openmp openmultiplayer sa-mp samp san-andreas-multiplayer windows

Last synced: 15 May 2026

https://github.com/timostrating/projecteuler

These are Java / Ruby / C / Lisp / Haskell / PHP/ Bash / PL-SQL / Mathematica / Rust / Kotlin / Lua solutions for Project Euler, — In the best 1% of the world

cpp java mathematica projecteuler python ruby

Last synced: 12 Sep 2025

https://github.com/abhi5h3k/cellularlab

📱 CellularLab – iPerf3 Client for Android

best-iperf cellular-automaton cmakelists cpp gemini-api gemini-client iperf iperf-android iperf-android-app iperf-auto-run iperf3 iperf3-android iperf3-client jni kotlin-android kotlin-coroutines network network-analysis network-monitoring radio-frequency

Last synced: 15 Aug 2025

https://github.com/yasushi-saito/grpc-ssl-example

Example of using grpc-c++ w/ self-signed certificates

cpp go grpc self-signed-certificate ssl tls

Last synced: 16 Mar 2025

https://github.com/onionhammer/clibpp

Easy way to 'Mock' C++ interface

cplusplus cpp nim

Last synced: 09 Mar 2026

https://github.com/gmh-code/rpcemu

WebAssembly Multi-Threaded Risc PC Emulator

arm c cpp emscripten emscripten-port emulator emulators javascript multi-threading multithreading online-emulator qt qt-wasm qt6 risc risc-os riscos wasm web-assembly webassembly

Last synced: 22 Aug 2025

https://github.com/nicmcd/libdes

A C++ discrete event simulation framework

cpp event simulation

Last synced: 26 Apr 2025

https://github.com/mariokonrad/vhf-sim

Simulation of a maritime VHF

cpp lua maritime qt simulation vhf vhf-sim vhf-simulator

Last synced: 11 Apr 2025

https://github.com/bnzis/bulb

My little programming language.

bulb c cpp interpreter interpreters language lisp scripting scripting-language

Last synced: 11 May 2025

https://github.com/lecrapouille/openglcppwrapper

[Lib][Version 0.9][Partially Functional][WIP] A C++ 11 wrapper for Core Profile OpenGL allowing to write complete applications in a reduced number of lines of code

3d 3d-engine 3d-game 3d-graphics cpp cpp11 game-development glumpy graphics graphics-programming opengl opengl-functions opengl-tutorial opengl-wrapper rendering shaders three-cpp three-js wrapper

Last synced: 19 Mar 2025

https://github.com/netromdk/bmod

bmod parses binaries for modification/patching and disassembles machine code sections.

assembly-language binary cmake cpp disassembler disassembly modification patching qt5 x86 x86-32 x86-64

Last synced: 25 Jul 2025

https://github.com/siarheifedartsou/mama

Realtime map matching with gRPC-based API

backend cpp grpc map map-matching maps openstreetmap osm

Last synced: 14 Jul 2025

https://github.com/yuki-koyama/visoptslider

Qt-based implementation of VisOpt Slider widget [UIST 2014] for C++ & Python

cpp python qt slider visualization widget

Last synced: 06 Mar 2026

https://github.com/novak-99/vectorization

Quick demo of vectorization using C++ and x86_64 ASM.

asm cpp vectorization

Last synced: 11 Apr 2025

https://github.com/farzadforuozanfar/cpp_cource_ex

Introductory C ++ language exercises at the university in the basics of computer and advanced programming and discrete mathematics

basic-programming calculator cpp date discrete-mathematics n-queens n-queens-problem oop structured-data template time twitter vector

Last synced: 12 Apr 2025

https://github.com/virtyaluk/coursera-data-structures-algorithms

:microscope: My progress doing Coursera' Data Structures and Algorithms Specialization

algorithms coursera cpp data-structures python

Last synced: 07 May 2025

https://github.com/jacmoe/retronew

Retro graphics programming in 16bit style - using a modern tool-chain

allegro5 cmake cpp cpp17 raycaster raycasting raycasting-engine

Last synced: 25 Jul 2025

https://github.com/gochomugo/crun

Run C/C++ scripts, just like you would do with Python, Ruby etc.

c c-plus-plus cpp

Last synced: 21 Mar 2025

https://github.com/isuckatcs/advent-of-code

Advent of Code solutions in C++, Rust, Kotlin, Swift and Mojo 🔥

advent-of-code advent-of-code-2015 advent-of-code-2022 advent-of-code-2023 advent-of-code-cpp advent-of-code-kotlin advent-of-code-mojo advent-of-code-rust advent-of-code-swift aoc cpp kotlin mojo rust swift

Last synced: 12 Jul 2025

https://github.com/xaizek/uncov

uncov(er) is a tool that collects and processes code coverage reports.

agpl command-line-app command-line-tool coverage coverage-changes coverage-report coverage-reports cpp cpp11 gcov test-coverage web-interface

Last synced: 14 Apr 2025

https://github.com/archishmansengupta/competitive-coding

my random competitive programming solutions (and other stuff) ~ 3 years ago, yes ik i need to make a comeback

competitive-programming cpp icpc

Last synced: 23 Jul 2025

https://github.com/bitwizeshift/not_null

Non-nullable pointers with 0-overhead and no hidden runtime cost.

cpp cpp11 cpp14 cpp17 modern-cpp not-null nullability

Last synced: 12 Apr 2025

https://github.com/thirdweb-dev/unreal-engine

Best in class Web3 Unreal Code Plugin, powered by thirdweb. Core built in Rust.

cpp rust unreal-engine-5

Last synced: 25 Jul 2025

https://github.com/risto97/peakrdl-halcpp

C++ 17 Hardware abstraction layer generator from systemrdl

cpp cpp17 cpu embedded processor programming risc-v riscv systemonchip systemrdl systemrdl-compiler

Last synced: 01 Sep 2025

https://github.com/qengineering/tensorflow-jetsonnano

TensorFlow installation wheels for Jetson Nano

cpp jetson-nano jetson-xavier jetson-xavier-agx pip python python3 tensorflow tensorflow-2-3 tensorflow-2-4 wheel whl

Last synced: 26 Jul 2025

https://github.com/oceanpresentchao/qt-shoppingmall

用Qt完成的微商系统，包含完整的前后端，使用Mysql数据库，socket通信

cpp jlu qt5 qtcreator shop

Last synced: 18 Sep 2025

https://github.com/mysterycoder456/threecengine

ThreeDEngine ported for C++

3d 3d-graphics cpp game-development olcpixelgameengine

Last synced: 19 Mar 2025

https://github.com/megatokio/libraries

c++ libraries required for all of my projects

c-string cpp library

Last synced: 14 Apr 2025

https://github.com/reime005/react-native-cpp-code

This repository shows how to use C++ code as a custom module in a React Native app.

android cpp ios javascript react react-native react-native-module

Last synced: 06 Apr 2025

https://github.com/Abdul-AZ/Ainan

A visual effects and motion graphics making application mainly targeting game developers.

cpp directx-11 good-first-issue graphics graphics-programming opengl premake5 render visual-studio

Last synced: 11 Mar 2025

https://github.com/qengineering/yolact-ncnn-raspberry-pi-4

Yolact running on the ncnn framework on a bare Raspberry Pi 4 with 64 OS, overclocked to 1950 MHz

aarch64 cpp deep-learning ncnn ncnn-framework ncnn-model raspberry-pi raspberry-pi-4 raspberry-pi-64-os yolact

Last synced: 06 Mar 2026

https://github.com/egecetin/libkaleidoscope

A library to create kaleidoscope effect on images with CUDA. You can build on all platforms using CMake

c cpp cuda image-filter image-filtering image-manipulation image-processing kaleidoscope python real-time real-time-processing video-filter video-filtering video-processing

Last synced: 14 Apr 2025

https://github.com/ayeujjawalsingh/cheat-sheet

Here is the Some Cheat-Sheet, through which you can easily Revise your knowledge......

canvas cheatsheet cpp css django flask html5 java javascript jquery mysql php python sql

Last synced: 25 Aug 2025

https://github.com/jdsherbert/unreal-engine-true-first-person-template

An Unreal Engine C++ project with Raytracing enabled, built on top of the Third Person Template, with some edits to behave as a True First Person implementation as if from Epic Games.

cpp cpp17 epic-games first-person-view mit-license template template-project unreal unreal-engine unreal-engine-5