2dPlayGround

A small playground 2D game engine to create a mini-game that is based on SDL2, ImGu, EnTT and an minimal custom made OpenAL sound-engine.
In principal I tried to stick modern C++ wherever it made sense, mainly to keep myself up2date with new possibilities to make the code more readable, efficient and safer.\

Prerequisites

The project uses CMake Package Manager
As the project uses some advanced C++ features (aiming to use C++23) a recent compiler is needed. See next section for details

• CMake > 3.22
• GCC > 14.1 or Clang 17.0.3 or the MSVC 2022 compiler

It is tested on Windows using VS2022 and inside an Ubuntu environment (24.04) but might also work on other distributions.

Build

The project uses CMake and comes with presets, so building is a trivial as:

cmake --preset=unixlike-gcc-release
cmake --build --preset=unixlike-gcc-release

All available presets for your target platform:

cmake --list-presets

Visual Studio and VS Code will also work either directly for Windows or using WSL.

Project structure

The project currently consists of 3 major parts/folders

• libs
  • pgFoundation
  • pgEngine
  • pgGame
• apps
  • sandbox
  • galaxy
  • asteroids
  • ... some other
• tools
• tests

tests

Catch2 based unittest. By far not complete.

tools

All tools for creating resources etc. Currently there is only a collisionShape generator that produces convex hulls from sprites.

libs

pgFoundation

Comprises of some classes and facilties that are not directly specific to this. Is a candidate to be moved outside the project

├── caching      
├── imgui
├── paths
├── serialization
└── strings

pgEngine

Some attempt to build a minimal game engine which in principal is based on SDL2 (in detail it is using sdlpp). It provides core an core architecture by abstracting an application, event loop, math and rendering primitives.

The math library contains a minimal linear algebra library (as i found GMTL/my GMTL fork clumsy and outdated and eigen to much for what I wanted initially. I've also considered GLM ). With it I added some minimal space partitioning (a KDTree) and some minimal collision code.

pgGame

Extends the pgEngine using ECS (EnTT) to provide basic entities, a system abstraction and basic resource and scene management.

apps

Asteroids

This serves as a simple tech demo and concept playground. It is based on pgGame and therefore is a based on an EnTT. There is still a lot to learn and to experiment with.

Galaxy

A small portion of a game idea I developed some years ago. It basically revolves around vonNeumann probes and is currently developed into a working game.

Sandbox et al.

All other folders are for testing, messing around and minimal tech demos.

Running

If you want to try, you can use the install targets created by the cmake-configure step. They will install all resources, libraries.

Troubleshooting