C++ OpenGL 3D Game Tutorial Series - Learn to code an OpenGL 3D Game in C++ from scratch

Last update: Dec 22, 2022

Overview

C++ OpenGL 3D Game Tutorial Series is a YouTube Tutorial Series,
whose purpose is to help all those who want to take their first steps in the game development from scratch.
In this series you'll learn how to create an OpenGL 3D Game Demo, starting from the creation of a Window by using Win32 API
to the making of all the necessary sub-systems in order to achieve a complete 3D Game, like

OpenGL 3D Graphics Engine
Input System
etc.

For any questions, doubts or clarifications about the C++ OpenGL 3D Game Tutorial Series, you can join the discord server, where you can meet other users or developers like you.
Before to ask any question, check the FAQs. The answers you are searching for could be already there.
You can find the license here.

This project is available under a free and permissive license, but needs a financial support to sustain its development.
The development includes both the making of video tutorials and the writing of the code.
Consider to support it through Patreon.

Any single contribution would be greately appreciated, regardless the amount.
Many thanks to all these people who have supported me so far!

Supporters

Thank you so much for your huge support!

Patreon Supporters (alphabetical order)

Ahmad A. - Andrew C. - Andrew M. - Anotherbear Gamer - Bastien R. - bdfy - Biuret
Carlo S. - Daniel W. - Elite Salad - hisuzuki - Howl C - James B. - Joshua v.
kuronk cat - Lie - Manuel H. - Mateusz P. - Miles H. - Murdo M. - Nikhil R.
Neil W. - Oliver H. - Patrick B. - Ridtichai B. - Rem saigao
REX Li - Robson - Snip - Squeegiefilms - The Spygineer
Valgard - Werner O. - WyattFlash

All YouTube - Discord - GitHub - Twitter followers and viewers

P.S.: If you are a Patron and you want to be added or removed from this list, please send a message to PardCode through Patreon.

License

The license of this project is based on the modified MIT-License.

That means you can do whatever you want with the code available in this repository. The only conditions to meet are:

include the license text in your product (e.g. in the About Window of a GUI program, or Credits Section of a 2D/3D Visual Game)
include (or simply not delete) the license text in all the source code files you get from this repository (copy-paste the license text to the top of all the source code files you get from this repository, even if you have partially modified them. )

If you want to modify and redistribute the source code files available in this repository, you can optionally add your own copyright notice together with the license text in this way:

...
C++ OpenGL 3D Game Tutorial Series (https://github.com/PardCode/OpenGL-Game-Tutorial-Series)
<project name>, <website link or nothing>
  
Copyright (c) 2021, PardCode
Copyright (c) <your years>, <your name>  
...

The license text is available in the LICENSE file.

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Comments

Code review
In https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series/blob/4d381770a8e1cf3b2850f4cc236568856de7fa5d/Tutorial8_EntitySystem_Basics/Game/MyGame.cpp#L41 not missing calling OEntitySystem::update ?

In https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series/blob/4d381770a8e1cf3b2850f4cc236568856de7fa5d/Tutorial8_EntitySystem_Basics/OGL3D/source/OGL3D/Entity/OEntitySystem.cpp#L41 I find sad to set each field this way, this is error-prone (missing one, i.e.) better to use the constructor to pass these parameters: the compiler will warn you in case of missing one.

In https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series/blob/4d381770a8e1cf3b2850f4cc236568856de7fa5d/Tutorial8_EntitySystem_Basics/OGL3D/source/OGL3D/Entity/OEntitySystem.cpp#L54 You use m_entitiesToDestroy for not interfering deleting elements when iterating on them, but why not for createEntityInternal ? I guess you can create entities during the entity->onUpdate ? I guess a fake solution is to use mutex because creating entities at run-time will create a dead lock. But point to take into account when threading your game. Another solution would be unordered_map (confer section Iterator validity https://cplusplus.com/reference/unordered_map/unordered_map/erase/ vs https://cplusplus.com/reference/map/map/erase/)

Risk of recursivity https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series/blob/4d381770a8e1cf3b2850f4cc236568856de7fa5d/Tutorial8_EntitySystem_Basics/OGL3D/source/OGL3D/Entity/OEntitySystem.cpp#L44 entity->onCreate() creating entity calling onCreate() creating entity callin onCreate ...

In https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series/blob/4d381770a8e1cf3b2850f4cc236568856de7fa5d/Tutorial8_EntitySystem_Basics/OGL3D/source/OGL3D/Entity/OEntity.cpp#L32 your destructor does not call release() and release() should be private.

In https://github.com/PardCode/OpenGL-3D-Game-Tutorial-Series/blob/4d381770a8e1cf3b2850f4cc236568856de7fa5d/Tutorial8_EntitySystem_Basics/OGL3D/include/OGL3D/Entity/OEntity.h#L44 maybe m_entitySystem could be static: no more getEntitySystem()
opened by Lecrapouille 1