ModCreator.cs

using System.IO;

namespace DarkestDungeonRandomizer;

static class ModCreator
{
    /// <summary>
    /// Creates a mod on disk and returns the directory it's contained within.
    /// If the mod already exists on disk, it will be deleted.
    /// </summary>
    /// <param name="options"></param>
    /// <returns></returns>
    public static DirectoryInfo CreateMod(MainViewModel options)
    {
        var uuid = GetRandomizerUUID(options);
        var modDirectory = Path.Combine(options.DDPath, "mods", $"Randomizer {uuid}");
        if (Directory.Exists(modDirectory))
        {
            Directory.Delete(modDirectory, true);
        }
        var dir = Directory.CreateDirectory(modDirectory);
        File.WriteAllText(Path.Combine(dir.FullName, "project.xml"),
$@"<?xml version=""1.0"" encoding=""utf-8""?>
<project>
<PreviewIconFile></PreviewIconFile>
<ItemDescriptionShort/>
<ModDataPath>{dir.FullName}</ModDataPath>
<Title>Randomizer [Tag {uuid} | Seed {options.Seed}]</Title>
<Language>english</Language>
<UpdateDetails/>
<Visibility>hidden</Visibility>
<UploadMode>dont_submit</UploadMode>
<VersionMajor>0</VersionMajor>
<VersionMinor>0</VersionMinor>
<TargetBuild>0</TargetBuild>
<Tags></Tags>
<ItemDescription>If playing the same randomizer as another player, make sure that the IDs match on both clients.</ItemDescription>
<PublishedFileId></PublishedFileId>
</project>");
        return dir;
    }

    public static string GetRandomizerUUID(MainViewModel options)
    {
        int addin =
            (options.RandomizeCurioEffects ? 1 : 0) +
            (options.RandomizeCurioInteractions ? 1 << 1 : 0) +
            (options.RandomizeCurioRegions ? 1 << 2 : 0) +
            (options.IncludeShamblerAltar ? 1 << 3 : 0) +
            (options.IncludeStoryCurios ? 1 << 4 : 0) +
            (options.RandomizeMonsters ? 1 << 5 : 0) +
            (options.RandomizeBosses ? 1 << 6 : 0) +
            ((int)(options.RandomizeHeroStats * 4) << 7) + /* 3 bits */
            (options.RandomizeCampingSkills ? 1 << 10 : 0);
        return addin.ToString("x") + options.Seed.ToString("x8");
    }

    public static void PopulateRandomizerOptionsFromUUID(MainViewModel model, string tag)
    {
        model.Seed = int.Parse(tag[^8..], System.Globalization.NumberStyles.HexNumber);
        var addin = int.Parse(tag[..^8], System.Globalization.NumberStyles.HexNumber);
        model.RandomizeCurioEffects = (addin & 1) != 0;
        model.RandomizeCurioInteractions = (addin & (1 << 1)) != 0;
        model.RandomizeCurioRegions = (addin & (1 << 2)) != 0;
        model.IncludeShamblerAltar = (addin & (1 << 3)) != 0;
        model.IncludeStoryCurios = (addin & (1 << 4)) != 0;
        model.RandomizeMonsters = (addin & (1 << 5)) != 0;
        model.RandomizeBosses = (addin & (1 << 6)) != 0;
        model.RandomizeHeroStats = ((addin & (7 << 7)) >> 7) / 4d;
        model.RandomizeCampingSkills = (addin & (1 << 10)) != 0;
    }
}