Raycaster

This is a simple "from-scratch" raycaster implementation in C++ using SDL2. This implementation uses some pretty sketchy memory accessing for reading and setting RGB values in the SDL_Surface pixel data, but it was the fastest way I could come up with. You have been warned; don't blame me if it crashes your computer!

Dependencies

You will need to install SDL2 and SDL2-Image. On Ubuntu, you can install them like this:

sudo apt install libsdl2-2.0 libsdl2-dev libsdl2-image libsdl2-image-dev libsdl2-ttf-dev

If using cmake, you need to initialize the submodule for findsdl2

git submodule update --init

Compiling

The program can be compiled using g++ like this:

g++ main.cpp -O3 -l SDL2 -l SDL2_image -l SDL2_ttf -pthread

or using cmake:

mkdir build
cd build
cmake ..
make

On windows, you can use vcpkg to install the dependencies and use the vcpkg cmake toolchain:

vcpkg install sdl2 sdl2_image sdl2_ttf

cmake -DCMAKE_TOOLCHAIN_FILE={VCPKG_PATH}/scripts/buildsystems/vcpkg.cmake ..

Demo