feat: implement SelectBGM

Mu3Mods.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFramework>net35</TargetFramework>
     <Company>7EVENDAYS⇔HOLIDAYS</Company>
-    <Version>2.1.0</Version>
+    <Version>2.2.0</Version>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <LangVersion>latest</LangVersion>
     <Platforms>x64</Platforms>

Mu3Mods.sln

@@ -41,6 +41,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PlatinumTiming", "PlatinumT
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AttractVideoPlayer", "AttractVideoPlayer\AttractVideoPlayer.csproj", "{6889330F-2E7E-4778-ADFF-70AF036F1BD5}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SelectBGM", "SelectBGM\SelectBGM.csproj", "{07C01DA1-7ABF-4759-A1C2-9DCD04298E85}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64
@@ -123,6 +125,10 @@ Global
 		{6889330F-2E7E-4778-ADFF-70AF036F1BD5}.Debug|x64.Build.0 = Debug|x64
 		{6889330F-2E7E-4778-ADFF-70AF036F1BD5}.Release|x64.ActiveCfg = Release|x64
 		{6889330F-2E7E-4778-ADFF-70AF036F1BD5}.Release|x64.Build.0 = Release|x64
+		{07C01DA1-7ABF-4759-A1C2-9DCD04298E85}.Debug|x64.ActiveCfg = Debug|x64
+		{07C01DA1-7ABF-4759-A1C2-9DCD04298E85}.Debug|x64.Build.0 = Debug|x64
+		{07C01DA1-7ABF-4759-A1C2-9DCD04298E85}.Release|x64.ActiveCfg = Release|x64
+		{07C01DA1-7ABF-4759-A1C2-9DCD04298E85}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

SelectBGM/MU3.Game/patch_GameBGM.cs

@@ -0,0 +1,14 @@
+using MU3.Sound;
+
+namespace MU3.Game;
+
+class patch_GameBGM: GameBGM {
+    public static bool WithholdPlay = false;
+    public extern void orig_playBGM(SoundManager.ACBData acbData, int soundId, int selectorID, bool forcePlay = false);
+    public new void playBGM(SoundManager.ACBData acbData, int soundId, int selectorID, bool forcePlay = false) {
+        // Prevents theme music from being restarted
+        if(!WithholdPlay) {
+            orig_playBGM(acbData, soundId, selectorID, forcePlay);
+        }
+    }
+}

SelectBGM/MU3.Sequence/patch_Play.cs

@@ -0,0 +1,38 @@
+using MU3.Data;
+using MU3.Game;
+using MU3.Util;
+using System;
+
+namespace MU3.Sequence;
+class patch_Play: Play {
+    private LocalSessionInfo _localSessionInfo;
+
+    public static int RecentID = 6;
+    private extern void orig_Enter_Login();
+    private void Enter_Login() {
+        orig_Enter_Login();
+        using IniFile iniFile = new("mu3.ini");
+        var index = iniFile.getIntValue("Extra", "BGM", 6);
+        if(index == 0) {
+            var rnd = new Random();
+            index = rnd.Next(1, 7);
+        }
+        if(index < 0 || index > 6) {
+            index = 6;
+        }
+        RecentID = index;
+        Singleton<GameSound>.instance.gameBGM.playBGM(233, index);
+    }
+
+    private extern void orig_Enter_ChapterSelect();
+    private void Enter_ChapterSelect() {
+        patch_GameBGM.WithholdPlay = true;
+        orig_Enter_ChapterSelect();
+        patch_GameBGM.WithholdPlay = false;
+
+        int selectorID = SingletonStateMachine<DataManager, DataManager.EState>.instance.getMemoryChapterData(
+            _localSessionInfo.chapterSelection.memoryChapterId
+        )?.getMemoryChapterSelectorID() ?? RecentID;
+        Singleton<GameSound>.instance.gameBGM.playBGM(233, selectorID);
+    }
+}

SelectBGM/MU3/patch_Scene_32_PrePlayMusic_ChapterSelect.cs

@@ -0,0 +1,22 @@
+using MU3.Game;
+using MU3.Sequence;
+using MU3.Util;
+using MU3.ViewData;
+
+namespace MU3;
+class patch_Scene_32_PrePlayMusic_ChapterSelect: Scene_32_PrePlayMusic_ChapterSelect {
+    private ChapterSelectorItemViewData _selectItemViewData;
+    private extern void orig_onChangeElement(int index, int indexRaw);
+    private void onChangeElement(int index, int indexRaw) {
+        patch_GameBGM.WithholdPlay = true;
+        orig_onChangeElement(index, indexRaw);
+        patch_GameBGM.WithholdPlay = false;
+
+        int selectorID = (
+            (_selectItemViewData.memoryChapterViewData == null)
+                ? null
+                : _selectItemViewData.memoryChapterViewData.memoryChapterData
+        )?.getMemoryChapterSelectorID() ?? patch_Play.RecentID;
+        Singleton<GameSound>.instance.gameBGM.playBGM(233, selectorID);
+    }
+}

SelectBGM/SelectBGM.csproj

@@ -0,0 +1,7 @@
+<Project>
+  <PropertyGroup>
+    <AssemblyName>Assembly-CSharp.SelectBGM.mm</AssemblyName>
+    <Description>Select main menu BGM</Description>
+  </PropertyGroup>
+  <Import Project="..\Mu3Mods.csproj" />
+</Project>