remove emerald cost from vault enchanter

CHANGELOG.md

@@ -1,5 +1,6 @@
 # devel
 
+* Removed Emerald cost from Vault Enchanter.
 * Lots of refactoring work behind the scenes.
 * Added i18n support and lots of logging.
 * Fixed AE2 fake player in existing worlds not getting new research when it is added to the pack.

src/main/java/tv/alterNERD/VaultModTweaks/Configuration.java

@@ -31,6 +31,8 @@ public class Configuration {
     public static BooleanValue FORTUNE_ENABLED;
     public static IntValue FORTUNE_LEVEL;
 
+    public static BooleanValue ENCHANTS_FORFREE;
+
     public static BooleanValue JEWELER_ENABLED;
     public static DoubleValue JEWELER_CHANCE;
 
@@ -69,6 +71,12 @@ public class Configuration {
         FORTUNE_LEVEL = builder.defineInRange("maxLevel", 5, 3, 5);
         builder.pop();
 
+        // Enchantment Cost
+        builder.push("VaultEnchanter");
+        builder.comment("Remove the Emerald cost from the Vault Enchanter");
+        ENCHANTS_FORFREE = builder.define("removeEmeraldCost", true);
+        builder.pop();
+
         // Jeweler
         builder.push("Jeweler");
         builder.comment("Remove the Jeweler Expertise and change the default cutting chance accordingly");

src/main/java/tv/alterNERD/VaultModTweaks/integration/mixin/MixinEnchantmentCost.java

@@ -0,0 +1,64 @@
+/**
+ * Copyright 2023 alterNERDtive.
+ * 
+ * This file is part of Vault Mod Tweaks.
+ * 
+ * Vault Mod Tweaks is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * Vault Mod Tweaks is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with Vault Mod Tweaks.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package tv.alterNERD.VaultModTweaks.integration.mixin;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import iskallia.vault.util.EnchantmentCost;
+import net.minecraft.world.item.ItemStack;
+import tv.alterNERD.VaultModTweaks.Configuration;
+import tv.alterNERD.VaultModTweaks.VaultModTweaks;
+
+/**
+ * Changes the {@link iskallia.vault.util.EnchantmentCost} class used by the
+ * Vault Enchanter.
+ * 
+ * Specifically, it removes the Emerald cost of enchantments. Just because I
+ * cannot be arsed to bring them over every time.
+ */
+@Mixin(EnchantmentCost.class)
+public class MixinEnchantmentCost {
+    @Shadow(remap = false)
+    private List<ItemStack> items;
+
+    /**
+     * Removes the Emerald cost from all Vault Enchanter enchantments.
+     * 
+     * @param items
+     * @param levels
+     * @param ci
+     */
+    @Inject(
+        method = "<init>(Ljava/util/List;I)V",
+        at = @At("RETURN"),
+        remap = false
+    )
+    private void initCallback(List<ItemStack> items, int levels, CallbackInfo ci) {
+        if (Configuration.ENCHANTS_FORFREE.get()) {
+            VaultModTweaks.LOGGER.info("the_vault_tweaks.log.inject.enchanter.forfree");
+            this.items = new LinkedList<ItemStack>();
+        }
+    }
+}

src/main/resources/assets/the_vault_tweaks/lang/en_us.json

@@ -1,6 +1,7 @@
 {
     "the_vault_tweaks.log.inject.ae2research": "Injecting research for AE2 fake player …",
     "the_vault_tweaks.log.inject.buddingcrystal": "Injecting Budding Crystal settings …",
+    "the_vault_tweaks.log.inject.enchanter.forfree": "Removing Emerald cost from Vault Enchanter …",
     "the_vault_tweaks.log.inject.expertise.fortunate": "Removing Fortunate expertise …",
     "the_vault_tweaks.log.inject.expertise.jeweler": "Removing Jeweler expertise …",
     "the_vault_tweaks.log.inject.fortune.level": "Injecting maximum Fortune level: %1$d …",

src/main/resources/mixins.the_vault_tweaks.json

@@ -6,6 +6,7 @@
     "refmap": "mixins.the_vault_tweaks.refmap.json",
     "mixins": [
         "MixinCrystalBuddingConfig",
+        "MixinEnchantmentCost",
         "MixinEnchantmentEntry",
         "MixinExpertisesGuiConfig",
         "MixinPlayerResearchesData",