MuzikaGromche/MuzikaGromche.csproj

@@ -15,6 +15,12 @@
         <PackageReference Include="BepInEx.PluginInfoProps" Version="1.*"/>
         <PackageReference Include="UnityEngine.Modules" Version="2022.3.9" IncludeAssets="compile"/>
         <PackageReference Include="BepInEx.AssemblyPublicizer.MSBuild" Version="0.4.1" PrivateAssets="all" />
+        <!--
+            Publicize internal methods, so we could generate config entries for tracks at runtime instead
+            of generating code at compile time. See https://github.com/lc-sigurd/CSync/issues/11
+        -->
+        <PackageReference Include="Sigurd.BepInEx.CSync" Version="5.0.1" Publicize="true" />
+        <PackageReference Include="AinaVT-LethalConfig" Version="1.4.6" />
     </ItemGroup>
 
     <ItemGroup>

MuzikaGromche/Plugin.cs

@@ -4,6 +4,12 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Security.Cryptography;
 using BepInEx;
+using BepInEx.Configuration;
+using CSync.Extensions;
+using CSync.Lib;
+using LethalConfig;
+using LethalConfig.ConfigItems;
+using LethalConfig.ConfigItems.Options;
 using HarmonyLib;
 using UnityEngine;
 using UnityEngine.Networking;
@@ -11,47 +17,77 @@ using UnityEngine.Networking;
 namespace MuzikaGromche
 {
     [BepInPlugin(PluginInfo.PLUGIN_GUID, PluginInfo.PLUGIN_NAME, PluginInfo.PLUGIN_VERSION)]
+    [BepInDependency("com.sigurd.csync", "5.0.1")]
+    [BepInDependency("ainavt.lc.lethalconfig", "1.4.6")]
     public class Plugin : BaseUnityPlugin
     {
+        internal new static Config Config { get; private set; } = null;
+
         public static Track[] Tracks = [
             new Track
             {
                 Name = "MuzikaGromche",
+                Language = Language.RUSSIAN,
                 WindUpTimer = 46.3f,
                 Bpm = 130f,
             },
             new Track
             {
                 Name = "VseVZale",
+                Language = Language.RUSSIAN,
                 WindUpTimer = 39f,
                 Bpm = 138f,
             },
             new Track
             {
                 Name = "DeployDestroy",
+                Language = Language.RUSSIAN,
                 WindUpTimer = 40.7f,
                 Bpm = 130f,
             },
             new Track
             {
                 Name = "MoyaZhittya",
+                Language = Language.ENGLISH,
                 WindUpTimer = 34.5f,
                 Bpm = 120f,
             },
             new Track
             {
                 Name = "Gorgorod",
+                Language = Language.RUSSIAN,
                 WindUpTimer = 43.2f,
                 Bpm = 180f,
             },
             new Track
             {
                 Name = "Durochka",
+                Language = Language.RUSSIAN,
                 WindUpTimer = 37f,
                 Bpm = 130f,
             }
         ];
 
+        public static int IndexOfTrack(string trackName)
+        {
+            return Array.FindIndex(Tracks, track => track.Name == trackName);
+        }
+
+        public static Track ChooseTrack()
+        {
+            var seed = RoundManager.Instance.dungeonGenerator.Generator.ChosenSeed;
+            int[] weights = [.. Tracks.Select(track => track.Weight.Value)];
+            var rwi = new RandomWeightedIndex(weights);
+            var trackId = rwi.GetRandomWeightedIndex(seed);
+#if DEBUG
+            // Override for testing
+            // trackId = IndexOfTrack("DeployDestroy");
+#endif
+            var track = Tracks[trackId];
+            Debug.Log($"Seed is {seed}, chosen track is \"{track.Name}\", #{trackId} of {rwi}");
+            return Tracks[trackId];
+        }
+
         public static Coroutine JesterLightSwitching;
         public static Track CurrentTrack;
 
@@ -130,6 +166,7 @@ namespace MuzikaGromche
                     track.LoadedStart = DownloadHandlerAudioClip.GetContent(requests[i * 2]);
                     track.LoadedLoop = DownloadHandlerAudioClip.GetContent(requests[i * 2 + 1]);
                 }
+                Config = new Config(base.Config);
                 new Harmony(PluginInfo.PLUGIN_NAME).PatchAll(typeof(JesterPatch));
             }
             else
@@ -137,11 +174,19 @@ namespace MuzikaGromche
                 Logger.LogError("Could not load audio file");
             }
         }
+    };
+
+    public record Language(string Short, string Full)
+    {
+        public static readonly Language ENGLISH = new("EN", "English");
+        public static readonly Language RUSSIAN = new("RU", "Russian");
     }
 
     public class Track
     {
         public string Name;
+        // Language of the track's lyrics.
+        public Language Language;
         // Wind-up time can and should be shorter than the Start audio track,
         // so that the "pop" effect can be baked into the Start audio and kept away
         // from the looped part. This also means that the light show starts before
@@ -158,6 +203,9 @@ namespace MuzikaGromche
         public AudioClip LoadedStart;
         public AudioClip LoadedLoop;
 
+        // How often this track should be chosen, relative to the sum of weights of all tracks.
+        public SyncedEntry<int> Weight;
+
         public string FileNameStart => $"{Name}Start.{Ext}";
         public string FileNameLoop => $"{Name}Loop.{Ext}";
         private string Ext => AudioType switch
@@ -169,6 +217,176 @@ namespace MuzikaGromche
         };
     }
 
+    public readonly struct RandomWeightedIndex
+    {
+        public RandomWeightedIndex(int[] weights)
+        {
+            Weights = weights;
+            TotalWeights = Weights.Sum();
+            if (TotalWeights == 0)
+            {
+                // If everything is set to zero, everything is equally possible
+                Weights = [.. Weights.Select(_ => 1)];
+                TotalWeights = Weights.Length;
+            }
+        }
+
+        private byte[] GetHash(int seed)
+        {
+            var buffer = new byte[4 * (1 + Weights.Length)];
+            var offset = 0;
+            Buffer.BlockCopy(BitConverter.GetBytes(seed), 0, buffer, offset, sizeof(int));
+            // Make sure that tweaking weights even a little drastically changes the outcome
+            foreach (var weight in Weights)
+            {
+                offset += 4;
+                Buffer.BlockCopy(BitConverter.GetBytes(weight), 0, buffer, offset, sizeof(int));
+            }
+            var sha = SHA256.Create();
+            var hash = sha.ComputeHash(buffer);
+            return hash;
+        }
+
+        private int GetRawIndex(byte[] hash)
+        {
+            if (TotalWeights == 0)
+            {
+                // Should not happen, but what if Weights array is empty?
+                return -1;
+            }
+
+            var index = 0;
+            foreach (var t in hash)
+            {
+                // modulus division on byte array
+                index *= 256 % TotalWeights;
+                index %= TotalWeights;
+                index += t % TotalWeights;
+                index %= TotalWeights;
+            }
+            return index;
+        }
+
+        private int GetWeightedIndex(int rawIndex)
+        {
+            if (rawIndex < 0 || rawIndex >= TotalWeights)
+            {
+                return -1;
+            }
+
+            int sum = 0;
+            foreach (var (weight, index) in Weights.Select((x, i) => (x, i)))
+            {
+                sum += weight;
+                if (rawIndex < sum)
+                {
+                    // Found
+                    return index;
+                }
+            }
+
+            return -1;
+        }
+
+        public int GetRandomWeightedIndex(int seed)
+        {
+            var hash = GetHash(seed);
+            var index = GetRawIndex(hash);
+            return GetWeightedIndex(index);
+        }
+
+        public override string ToString()
+        {
+            return $"Weighted(Total={TotalWeights}, Weights=[{string.Join(',', Weights)}])";
+        }
+
+        readonly private int[] Weights;
+        readonly public int TotalWeights { get; }
+    }
+
+    public class Config : SyncedConfig2<Config>
+    {
+        public Config(ConfigFile configFile) : base(PluginInfo.PLUGIN_GUID)
+        {
+            var chanceRange = new AcceptableValueRange<int>(0, 100);
+            var languageSectionButtonExists = new HashSet<Language>();
+
+            foreach (var track in Plugin.Tracks)
+            {
+                var language = track.Language;
+                string section = $"Tracks.{language.Short}";
+
+                // Create section toggle
+                if (!languageSectionButtonExists.Contains(language))
+                {
+                    languageSectionButtonExists.Add(language);
+                    string buttonOptionName = $"Toggle all {language.Full} tracks";
+                    string buttonDescription = "Toggle all tracks in this section ON or OFF. Effective immediately.";
+                    string buttonText = "Toggle";
+                    var button = new GenericButtonConfigItem(section, buttonOptionName, buttonDescription, buttonText, () =>
+                    {
+                        if (CanModifyWeightsNow())
+                        {
+                            var tracks = Plugin.Tracks.Where(t => t.Language.Equals(language)).ToList();
+                            var isOff = tracks.All(t => t.Weight.Value == 0);
+                            var newWeight = isOff ? 50 : 0;
+                            foreach (var t in tracks)
+                            {
+                                t.Weight.LocalValue = newWeight;
+                            }
+                        }
+                    });
+                    button.ButtonOptions.CanModifyCallback = CanModifyWeightsNow;
+                    LethalConfigManager.AddConfigItem(button);
+                }
+
+                // Create slider entry for track
+                string name = $"[{language.Short}] {track.Name}";
+                string description = $"Language: {language.Full}\n\nRandom (relative) chance of selecting this track.\n\nSet to zero to effectively disable the track.";
+                track.Weight = configFile.BindSyncedEntry(
+                    new ConfigDefinition(section, track.Name),
+                    50,
+                    new ConfigDescription(description, chanceRange, track));
+
+                var slider = new IntSliderConfigItem(track.Weight.Entry, new IntSliderOptions
+                {
+                    RequiresRestart = false,
+                    CanModifyCallback = CanModifyWeightsNow,
+                });
+                LethalConfigManager.AddConfigItem(slider);
+            }
+
+            // HACK because CSync doesn't provide an API to register a list of config entries
+            // See https://github.com/lc-sigurd/CSync/issues/11
+            foreach (var track in Plugin.Tracks)
+            {
+                // This is basically what ConfigFile.PopulateEntryContainer does
+                SyncedEntryBase entryBase = track.Weight;
+                EntryContainer.Add(entryBase.BoxedEntry.ToSyncedEntryIdentifier(), entryBase);
+            }
+
+            ConfigManager.Register(this);
+        }
+
+        public static CanModifyResult CanModifyWeightsNow()
+        {
+            var startOfRound = StartOfRound.Instance;
+            if (!startOfRound)
+            {
+                return CanModifyResult.True(); // Main menu
+            }
+            if (!startOfRound.IsHost)
+            {
+                return CanModifyResult.False("Only for host");
+            }
+            if (!startOfRound.inShipPhase)
+            {
+                return CanModifyResult.False("Only while orbiting");
+            }
+            return CanModifyResult.True();
+        }
+    }
+
     [HarmonyPatch(typeof(JesterAI))]
     internal class JesterPatch
     {
@@ -214,20 +432,7 @@ namespace MuzikaGromche
                 __instance.creatureVoice.Stop();
 
                 //  ...and start modded music
-                var seed = RoundManager.Instance.dungeonGenerator.Generator.ChosenSeed;
-                var sha = SHA256.Create();
-                var hash = sha.ComputeHash(BitConverter.GetBytes(seed));
-                var trackId = 0;
-                foreach (var t in hash)
-                {
-                    // modulus division on byte array
-                    trackId *= 256 % Plugin.Tracks.Length;
-                    trackId %= Plugin.Tracks.Length;
-                    trackId += t % Plugin.Tracks.Length;
-                    trackId %= Plugin.Tracks.Length;
-                }
-                Debug.Log($"Seed is {seed}, chosen track is {trackId} out of {Plugin.Tracks.Length} tracks");
-                Plugin.CurrentTrack = Plugin.Tracks[trackId];
+                Plugin.CurrentTrack = Plugin.ChooseTrack();
                 __instance.popUpTimer = Plugin.CurrentTrack.WindUpTimer;
                 __instance.farAudio.maxDistance = 150;
                 __instance.farAudio.clip = Plugin.CurrentTrack.LoadedStart;

NuGet.Config

@@ -2,5 +2,6 @@
 <configuration>
   <packageSources>
     <add key="BepInEx" value="https://nuget.bepinex.dev/v3/index.json" />
+    <add key="AAron Thunderstore" value="https://nuget.windows10ce.com/nuget/v3/index.json" />
   </packageSources>
 </configuration>

manifest.json

@@ -5,6 +5,8 @@
     "description": "Glaza zakryvaj",
     "website_url": "https://git.vilunov.me/nikita/muzika-gromche",
     "dependencies": [
-        "BepInEx-BepInExPack-5.4.2100"
+        "BepInEx-BepInExPack-5.4.2100",
+        "Sigurd-CSync-5.0.1",
+        "ainavt.lc.lethalconfig-1.4.6"
     ]
 }