# Towards

Game engine built as a modular monolith.

## Building

Dependencies:
- Conan 2 (`pipx install conan`, or `pip install conan`)
- Vulkan SDK

The Vulkan SDK must be installed before building. Do not forget to set PATH on Windows.

On Linux, Conan builds SDL2 from source and still needs the system OpenGL/X11/Wayland/ALSA development headers present.

First time only, create a Conan profile describing your compiler:

```bash
$ conan profile detect
```

Install the pinned dependencies and generate the CMake toolchain + presets:

```bash
$ conan install . --output-folder=build --build=missing -s build_type=Debug
```

Configure and build using the generated preset:

```bash
$ cmake -S . -B ./build -DCMAKE_TOOLCHAIN_FILE="build/conan_toolchain.cmake" -DCMAKE_BUILD_TYPE=Debug
$ cmake --build ./build
```

For a release build, repeat both steps with `-s build_type=Release` and the
`conan-release` preset.

There are now two executables:

Server is at `build/modules/client/mmo_server`

Client is at `build/modules/client/mmo_client`

First run the server, so that client can connect. The server will try to use port 8080, but if it is already occupied, it will try use the next free higher one.

## Docker build

It also possible to build the project using Docker. Advantage is that you do not have to set up the environment. The current Dockerfile also uses older linux distribution to be backwards compatible with older systems. To build everything, build the Dockerfile at `docker/Dockerfile` with until target `builder`:

```
$ docker build -f docker/Dockerfile --target builder -t tw_builder:jammy .
```

To easily export the built executables, run the target `export` of the same Dockerfile.

```
$ docker build -f docker/Dockerfile --target export --output type=local,dest=dist .
```