Enable Mod Menu translations on (Neo)Forge

Unlike Fabric's ModMenu, Forge doesn't natively support mod info translations.

I worked around this using a couple of forge-specific mixins.

CHANGELOG.md

@@ -9,7 +9,7 @@ and Freecam's versioning is based on [Semantic Versioning](https://semver.org/sp
 
 ### Added
 
-- \[Fabric]: The name & description shown in the Mod Menu can now be translated ([#172](https://github.com/MinecraftFreecam/Freecam/issues/172)).
+- The name & description shown in the Mod Menu can now be translated ([#172](https://github.com/MinecraftFreecam/Freecam/issues/172)).
 
 ### Changed
 

neoforge/src/main/java/net/xolt/freecam/forge/mixins/ModListEntryMixin.java

@@ -0,0 +1,45 @@
+package net.xolt.freecam.forge.mixins;
+
+import net.minecraft.network.chat.Component;
+import net.minecraft.network.chat.MutableComponent;
+import net.neoforged.neoforge.client.gui.widget.ModListWidget;
+import net.neoforged.neoforgespi.language.IModInfo;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.Redirect;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import static net.xolt.freecam.Freecam.MOD_ID;
+
+/**
+ * Enable translations in forge's mod list
+ */
+@Mixin(ModListWidget.ModEntry.class)
+public class ModListEntryMixin {
+
+    @Shadow @Final private IModInfo modInfo;
+
+    @Unique
+    private static MutableComponent freecam$displayName() {
+        return Component.translatable("freecam.name");
+    }
+
+    @Redirect(method = "render", at = @At(value = "INVOKE", ordinal = 0, target = "Lnet/minecraft/network/chat/Component;literal(Ljava/lang/String;)Lnet/minecraft/network/chat/MutableComponent;"))
+    MutableComponent setNameToRender(String arg) {
+        if (MOD_ID.equals(modInfo.getModId())) {
+            return freecam$displayName();
+        }
+        return Component.literal(arg);
+    }
+
+    @Inject(method = "getNarration", at = @At(value = "HEAD"), cancellable = true)
+    void getNarration(CallbackInfoReturnable<Component> cir) {
+        if (MOD_ID.equals(modInfo.getModId())) {
+            cir.setReturnValue(Component.translatable("narrator.select", freecam$displayName()));
+        }
+    }
+}

neoforge/src/main/java/net/xolt/freecam/forge/mixins/ModListScreenMixin.java

@@ -0,0 +1,39 @@
+package net.xolt.freecam.forge.mixins;
+
+import net.minecraft.locale.Language;
+import net.neoforged.neoforge.client.gui.ModListScreen;
+import net.neoforged.neoforgespi.language.IModInfo;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+import static net.xolt.freecam.Freecam.MOD_ID;
+
+/**
+ * Enable translations in forge's mod info panel
+ */
+@Mixin(ModListScreen.class)
+public abstract class ModListScreenMixin {
+
+    @Unique
+    private String freecam$translate(String key, String fallback) {
+        return Language.getInstance().getOrDefault(key, fallback);
+    }
+
+    @Redirect(method = "updateCache", at = @At(value = "INVOKE", target = "Lnet/neoforged/neoforgespi/language/IModInfo;getDisplayName()Ljava/lang/String;"))
+    String getName(IModInfo instance) {
+        if (MOD_ID.equals(instance.getModId())) {
+            return freecam$translate("freecam.name", instance.getDisplayName());
+        }
+        return instance.getDisplayName();
+    }
+
+    @Redirect(method = "updateCache", at = @At(value = "INVOKE", target = "Lnet/neoforged/neoforgespi/language/IModInfo;getDescription()Ljava/lang/String;"))
+    String getDescription(IModInfo instance) {
+        if (MOD_ID.equals(instance.getModId())) {
+            return freecam$translate("freecam.description", instance.getDescription());
+        }
+        return instance.getDescription();
+    }
+}

neoforge/src/main/resources/freecam-neoforge.mixins.json

@@ -4,6 +4,8 @@
   "compatibilityLevel": "JAVA_17",
   "minVersion": "0.8",
   "client": [
+    "ModListEntryMixin",
+    "ModListScreenMixin"
   ],
   "injectors": {
     "defaultRequire": 1