# Compilation guide for Windows (using Visual Studio and vcpkg)

This guide contains steps required to allow compilation of Cataclysm-DDA on Windows using Visual Studio and vcpkg.

Steps from current guide were tested on Windows 10 (64 bit), Visual Studio 2019 (64 bit) and vcpkg, but should as well work with slight modifications for other versions of Windows and Visual Studio.

## Prerequisites:

* Computer with modern Windows operating system installed (Windows 10, Windows 8.1 or Windows 7);
* NTFS partition with ~15 Gb free space (~10 Gb for Visual Studio, ~1 Gb for vcpkg installation, ~3 Gb for repository and ~1 Gb for build cache);
* Git for Windows (installer can be downloaded from [Git homepage](https://git-scm.com/));
* Visual Studio 2019 (or 2015 Visual Studio Update 3 and above);
* Latest version of vcpkg (see instructions on [vcpkg homepage](https://github.com/Microsoft/vcpkg)).

**Note:** Windows XP is unsupported!

## Installation and configuration:

1. Install `Visual Studio` (installer can be downloaded from [Visual Studio homepage](https://visualstudio.microsoft.com/)).

- Select the "Desktop development with C++" and "Game development with C++" workloads.

2. Install `Git for Windows` (installer can be downloaded from [Git homepage](https://git-scm.com/)).

3. Install and configure `vcpkg`:

***WARNING: It is important that, wherever you decide to clone this repo, the path does not include whitespace. That is, `C:/dev/vcpkg` is acceptable, but `C:/dev test/vcpkg` is not.***

```cmd
git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
.\bootstrap-vcpkg.bat -disableMetrics
.\vcpkg integrate install
```

4. Install a necessary pre-requisite package:

#### Install YASM-tool:

```cmd
.\vcpkg --triplet x86-windows install yasm-tool yasm-tool-helper
```

5. Install the dependencies for your desired architecture.


#### 64-bit dependencies:

```cmd
.\vcpkg --triplet x64-windows-static install sdl2 sdl2-image sdl2-mixer[libflac,mpg123,libmodplug,libvorbis] sdl2-ttf gettext
```

#### 32-bit dependencies:

```cmd
.\vcpkg --triplet x86-windows-static install sdl2 sdl2-image sdl2-mixer[libflac,mpg123,libmodplug,libvorbis] sdl2-ttf gettext
```

#### upgrade all dependencies:

```cmd
.\vcpkg upgrade
```

## Cloning and compilation:

1. Clone Cataclysm-DDA repository with following command line:

**Note:** This will download the entire CDDA repository; about three gigs of data. If you're just testing you should probably add `--depth=1`.

```cmd
git clone https://github.com/CleverRaven/Cataclysm-DDA.git
cd Cataclysm-DDA
```

2. Open the provided solution (`msvc-full-features\Cataclysm-vcpkg-static.sln`) in `Visual Studio`.

3. Open the `Build > Configuration Manager` menu and adjust `Active solution configuration` and `Active solution platform` to match your intended target.

This will configure Visual Studio to compile the release version, with support for Sound, Tiles, and Localization (note, however, that language files themselves are not automatically compiled; this will be done later).

4. Start the build process by selecting either `Build > Build Solution` or `Build > Build > 1 Cataclysm-vcpkg-static`. The process may take a long period of time, so you'd better prepare a cup of coffee and some books in front of your computer :)

5. If you need localization support, execute the bash script `lang/compile_mo.sh` inside Git Bash GUI just like on a UNIX-like system. This will compile the language files that were not automatically compiled in step 2 above.

Even if you do not need languages other than English, you may still want to execute `lang/compile_mo.sh en` or `lang/compile_mo.sh all` to compile the language file for English, in order to work-around a [libintl bug](https://savannah.gnu.org/bugs/index.php?58006) that is causing significant slow-down on Windows targets if a language file is not found.

### Debugging

Ensure that the Cataclysm project (`Cataclysm-vcpkg-static`) is the selected startup project, configure the working directory in the project settings to `$(ProjectDir)..` (under Debugging section), and then press the debug button (or use the appropriate shortcut, e.g. F5).

If you discover that after pressing the debug button in Visual Studio, Cataclysm just exits after launch with return code 1, that is because of the wrong working directory.

When debugging, it is not strictly necessary to use a `Debug` build; `Release` builds run significantly faster, can still be run in the debugger, and most of the time will have most of the information you need.

### Running unit tests

Ensure that the Cataclysm test project (`Cataclysm-test-vcpkg-static`) is the selected startup project, configure the working directory in the project settings to `$(ProjectDir)..`, and then press the debug button (or use the appropriate shortcut, e.g. F5). This will run all of the unit tests.

Additional command line arguments may be configured in the project's command line arguments setting, or if you are using a compatible unit test runner (e.g. Resharper) you can run or debug individual tests from the unit test sessions.
You can also start the test runner library manually from windows console. Run it with `--help` for an overview of the arguments.

### Make a distribution

There is a batch script in `msvc-full-features` folder `distribute.bat`. It will create a sub folder `distribution` and copy all required files(eg. `data/`, `Cataclysm.exe` and dlls) into that folder. Then you can zip it and share the archive on the Internet.
