feat: Reintroduce legacy-specific features to older versions

Author: Ampflower

src/main/java/gay/ampflower/musicmoods/client/ConfigurationScreen.java

@@ -97,7 +97,7 @@ protected void init() {
 		);
 
 		addTabEntry("volume", this::buildVolumeList);
-		addTabEntry("music", ConfigurationScreen::buildMusicOptionList);
+		addTabEntry("music", this::buildMusicOptionList);
 		addTabEntry("jukebox", ConfigurationScreen::buildJukeboxOptionList);
 		addTabEntry("demo", ConfigurationScreen::buildDemoList);
 		addTabEntry("meta", ConfigurationScreen::buildMetaList);
@@ -196,21 +196,35 @@ protected SpruceOptionListWidget buildVolumeList(int width, int height) {
 				Component.translatable("options.showNowPlayingToast.tooltip")
 			)
 		);
+		#else;
+		try {
+			list.addSingleOptionEntry(checkbox("alwaysPlayMusic"));
+		} catch (ReflectiveOperationException roe) {
+			throw new AssertionError("Unexpected access violation", roe);
+		}
 		#endif
 
 		return list;
 	}
 
-	protected static SpruceOptionListWidget buildMusicOptionList(int width, int height) {
+	protected SpruceOptionListWidget buildMusicOptionList(int width, int height) {
 		final var list = new SpruceOptionListWidget(Position.origin(), width, height);
 
 		try {
 			list.addSingleOptionEntry(separator("situationalMusic"));
 			list.addSingleOptionEntry(cycling("situationalMusicReplacing"));
-			list.addSingleOptionEntry(checkbox("immediatelyPlayOnReplace"));
+			#if MC_1_21_6_OR_NEWER
+			list.addOptionEntry(checkbox("immediatelyPlayOnReplace"), musicFrequency);
+			#else
+			list.addOptionEntry(checkbox("immediatelyPlayOnReplace"), checkbox("alwaysPlayMusic"));
+			#endif
 			list.addSingleOptionEntry(separator("transitions"));
 			list.addOptionEntry(intInput("fadeInTicks"), intInput("fadeOutTicks"));
+			#if MC_1_21_6_OR_NEWER
 			list.addSingleOptionEntry(checkbox("seamlessTransitions"));
+			#else
+			list.addOptionEntry(checkbox("seamlessTransitions"), checkbox("allowPausingMusic"));
+			#endif
 		} catch (ReflectiveOperationException roe) {
 			throw new AssertionError("Unexpected access violation", roe);
 		}

src/main/java/gay/ampflower/musicmoods/mixin/MixinMusicManager.java

@@ -211,6 +211,11 @@ private int deriveNextSongDelay(final Music music) {
 		// Fall back to legacy logic in case this is actually true.
 
 		final int minDelay;
+		#if MC_1_21_5_OR_OLDER
+		if (Config.alwaysPlayMusic) {
+			minDelay = 100;
+		} else
+		#endif
 		if (Config.chaoticallyPlayMusic) {
 			// 10 seconds at 60 FPS
 			minDelay = 600;
@@ -408,6 +413,10 @@ private int decrementSongDelay(Music music) {
 		if (frequency != null) {
 			maxDelay = Math.min(maxDelay, frequency.getMaxFrequency());
 		}
+		#else
+		if (Config.alwaysPlayMusic) {
+			maxDelay = 100;
+		}
 		#endif
 		return this.nextSongDelay = Math.min(this.nextSongDelay - 1, maxDelay);
 	}

stonecutter.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 	id("dev.kikugie.stonecutter")
 }
 
-stonecutter active "forge-1.20"
+stonecutter active "fabric-1.21.6"
 
 stonecutter.current?.apply {
 	val manifold = file("versions/$project/build.properties").toPath()