Paper/Spigot-Server-Patches/0134-Configurable-Cartographer-Treasure-Maps.patch

From a77af2c91e5f163c00454d5decf54d9c36aea050 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 20 Dec 2016 15:26:27 -0500
Subject: [PATCH] Configurable Cartographer Treasure Maps

Allow configuring for cartographers to return the same map location

Also allow turning off treasure maps all together as they can eat up Map ID's
which are limited in quantity.

diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 4892113a1..406bc611c 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -310,4 +310,14 @@ public class PaperWorldConfig {
             Bukkit.getLogger().warning("Spawn Egg and Armor Stand NBT filtering disabled, this is a potential security risk");
         }
     }
+
+    public boolean enableTreasureMaps = true;
+    public boolean treasureMapsAlreadyDiscovered = false;
+    private void treasureMapsAlreadyDiscovered() {
+        enableTreasureMaps = getBoolean("enable-treasure-maps", true);
+        treasureMapsAlreadyDiscovered = getBoolean("treasure-maps-return-already-discovered", false);
+        if (treasureMapsAlreadyDiscovered) {
+            log("Treasure Maps will return already discovered locations");
+        }
+    }
 }
diff --git a/src/main/java/net/minecraft/server/VillagerTrades.java b/src/main/java/net/minecraft/server/VillagerTrades.java
index 1df86e3bb..83bf9bea2 100644
--- a/src/main/java/net/minecraft/server/VillagerTrades.java
+++ b/src/main/java/net/minecraft/server/VillagerTrades.java
@@ -15,12 +15,12 @@ import javax.annotation.Nullable;
 
 public class VillagerTrades {
 
-    public static final Map<VillagerProfession, Int2ObjectMap<VillagerTrades.IMerchantRecipeOption[]>> a = (Map) SystemUtils.a((Object) Maps.newHashMap(), (hashmap) -> {
+    public static final Map<VillagerProfession, Int2ObjectMap<VillagerTrades.IMerchantRecipeOption[]>> a = SystemUtils.a(Maps.newHashMap(), (hashmap) -> { // Paper - decompile fix
         hashmap.put(VillagerProfession.FARMER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.WHEAT, 20, 8, 2), new VillagerTrades.b(Items.POTATO, 26, 8, 2), new VillagerTrades.b(Items.CARROT, 22, 8, 2), new VillagerTrades.b(Items.BEETROOT, 15, 8, 2), new VillagerTrades.h(Items.BREAD, 1, 6, 8, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Blocks.PUMPKIN, 6, 6, 10), new VillagerTrades.h(Items.PUMPKIN_PIE, 1, 4, 5), new VillagerTrades.h(Items.APPLE, 1, 4, 8, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.h(Items.COOKIE, 3, 18, 10), new VillagerTrades.b(Blocks.MELON, 4, 6, 20)}, 4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.h(Blocks.CAKE, 1, 1, 6, 15), new VillagerTrades.i(MobEffects.FASTER_MOVEMENT, 160, 15), new VillagerTrades.i(MobEffects.JUMP, 160, 15), new VillagerTrades.i(MobEffects.WEAKNESS, 140, 15), new VillagerTrades.i(MobEffects.BLINDNESS, 120, 15), new VillagerTrades.i(MobEffects.POISON, 280, 15), new VillagerTrades.i(MobEffects.SATURATION, 7, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.h(Items.GOLDEN_CARROT, 3, 3, 30), new VillagerTrades.h(Items.GLISTERING_MELON_SLICE, 4, 3, 30)})));
-        hashmap.put(VillagerProfession.FISHERMAN, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.STRING, 20, 8, 2), new VillagerTrades.b(Items.COAL, 10, 8, 2), new VillagerTrades.g(Items.COD, 6, Items.COOKED_COD, 6, 8, 1), new VillagerTrades.h(Items.COD_BUCKET, 3, 1, 8, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.COD, 15, 8, 10), new VillagerTrades.g(Items.SALMON, 6, Items.COOKED_SALMON, 6, 8, 5), new VillagerTrades.h(Items.pS, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.SALMON, 13, 8, 20), new VillagerTrades.e(Items.FISHING_ROD, 3, 2, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.TROPICAL_FISH, 6, 6, 30)}, 5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.PUFFERFISH, 4, 6, 30), new VillagerTrades.c(1, 6, 30, ImmutableMap.builder().put(VillagerType.c, Items.OAK_BOAT).put(VillagerType.g, Items.SPRUCE_BOAT).put(VillagerType.e, Items.SPRUCE_BOAT).put(VillagerType.a, Items.JUNGLE_BOAT).put(VillagerType.b, Items.JUNGLE_BOAT).put(VillagerType.d, Items.ACACIA_BOAT).put(VillagerType.f, Items.DARK_OAK_BOAT).build())})));
+        hashmap.put(VillagerProfession.FISHERMAN, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.STRING, 20, 8, 2), new VillagerTrades.b(Items.COAL, 10, 8, 2), new VillagerTrades.g(Items.COD, 6, Items.COOKED_COD, 6, 8, 1), new VillagerTrades.h(Items.COD_BUCKET, 3, 1, 8, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.COD, 15, 8, 10), new VillagerTrades.g(Items.SALMON, 6, Items.COOKED_SALMON, 6, 8, 5), new VillagerTrades.h(Items.pS, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.SALMON, 13, 8, 20), new VillagerTrades.e(Items.FISHING_ROD, 3, 2, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.TROPICAL_FISH, 6, 6, 30)}, 5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.PUFFERFISH, 4, 6, 30), new VillagerTrades.c(1, 6, 30, ImmutableMap.<VillagerType, Item>builder().put(VillagerType.c, Items.OAK_BOAT).put(VillagerType.g, Items.SPRUCE_BOAT).put(VillagerType.e, Items.SPRUCE_BOAT).put(VillagerType.a, Items.JUNGLE_BOAT).put(VillagerType.b, Items.JUNGLE_BOAT).put(VillagerType.d, Items.ACACIA_BOAT).put(VillagerType.f, Items.DARK_OAK_BOAT).build())}))); // Paper - decompile fix
         hashmap.put(VillagerProfession.SHEPHERD, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Blocks.WHITE_WOOL, 18, 8, 2), new VillagerTrades.b(Blocks.BROWN_WOOL, 18, 8, 2), new VillagerTrades.b(Blocks.BLACK_WOOL, 18, 8, 2), new VillagerTrades.b(Blocks.GRAY_WOOL, 18, 8, 2), new VillagerTrades.h(Items.SHEARS, 2, 1, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.WHITE_DYE, 12, 8, 10), new VillagerTrades.b(Items.GRAY_DYE, 12, 8, 10), new VillagerTrades.b(Items.BLACK_DYE, 12, 8, 10), new VillagerTrades.b(Items.LIGHT_BLUE_DYE, 12, 8, 10), new VillagerTrades.b(Items.LIME_DYE, 12, 8, 10), new VillagerTrades.h(Blocks.WHITE_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.ORANGE_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.MAGENTA_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.LIGHT_BLUE_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.YELLOW_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.LIME_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.PINK_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.GRAY_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.LIGHT_GRAY_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.CYAN_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.PURPLE_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.BLUE_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.BROWN_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.GREEN_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.RED_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.BLACK_WOOL, 1, 1, 8, 5), new VillagerTrades.h(Blocks.WHITE_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.ORANGE_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.MAGENTA_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.LIGHT_BLUE_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.YELLOW_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.LIME_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.PINK_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.GRAY_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.LIGHT_GRAY_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.CYAN_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.PURPLE_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.BLUE_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.BROWN_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.GREEN_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.RED_CARPET, 1, 4, 8, 5), new VillagerTrades.h(Blocks.BLACK_CARPET, 1, 4, 8, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.YELLOW_DYE, 12, 8, 20), new VillagerTrades.b(Items.LIGHT_GRAY_DYE, 12, 8, 20), new VillagerTrades.b(Items.ORANGE_DYE, 12, 8, 20), new VillagerTrades.b(Items.RED_DYE, 12, 8, 20), new VillagerTrades.b(Items.PINK_DYE, 12, 8, 20), new VillagerTrades.h(Blocks.WHITE_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.YELLOW_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.RED_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.BLACK_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.BLUE_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.BROWN_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.CYAN_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.GRAY_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.GREEN_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.LIGHT_BLUE_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.LIGHT_GRAY_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.LIME_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.MAGENTA_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.ORANGE_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.PINK_BED, 3, 1, 6, 10), new VillagerTrades.h(Blocks.PURPLE_BED, 3, 1, 6, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.BROWN_DYE, 12, 8, 30), new VillagerTrades.b(Items.PURPLE_DYE, 12, 8, 30), new VillagerTrades.b(Items.BLUE_DYE, 12, 8, 30), new VillagerTrades.b(Items.GREEN_DYE, 12, 8, 30), new VillagerTrades.b(Items.MAGENTA_DYE, 12, 8, 30), new VillagerTrades.b(Items.CYAN_DYE, 12, 8, 30), new VillagerTrades.h(Items.WHITE_BANNER, 3, 1, 6, 15), new VillagerTrades.h(Items.BLUE_BANNER, 3, 1, 6, 15), new VillagerTrades.h(Items.LIGHT_BLUE_BANNER, 3, 1, 6, 15), new Vil
         hashmap.put(VillagerProfession.FLETCHER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.STICK, 32, 8, 2), new VillagerTrades.h(Items.ARROW, 1, 16, 1), new VillagerTrades.g(Blocks.GRAVEL, 10, Items.FLINT, 10, 6, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.FLINT, 26, 6, 10), new VillagerTrades.h(Items.BOW, 2, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.STRING, 14, 8, 20), new VillagerTrades.h(Items.CROSSBOW, 3, 1, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.FEATHER, 24, 8, 30), new VillagerTrades.e(Items.BOW, 2, 2, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.dE, 8, 6, 30), new VillagerTrades.e(Items.CROSSBOW, 3, 2, 15), new VillagerTrades.j(Items.ARROW, 5, Items.TIPPED_ARROW, 5, 2, 6, 30)})));
-        hashmap.put(VillagerProfession.LIBRARIAN, a(ImmutableMap.builder().put(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.PAPER, 24, 8, 2), new VillagerTrades.d(1), new VillagerTrades.h(Blocks.BOOKSHELF, 6, 3, 6, 1)}).put(2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.BOOK, 4, 6, 10), new VillagerTrades.d(5), new VillagerTrades.h(Items.pQ, 1, 1, 5)}).put(3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.INK_SAC, 5, 6, 20), new VillagerTrades.d(10), new VillagerTrades.h(Items.am, 1, 4, 10)}).put(4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.WRITABLE_BOOK, 2, 6, 30), new VillagerTrades.d(15), new VillagerTrades.h(Items.CLOCK, 5, 1, 15), new VillagerTrades.h(Items.COMPASS, 4, 1, 15)}).put(5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.h(Items.NAME_TAG, 20, 1, 30)}).build()));
+        hashmap.put(VillagerProfession.LIBRARIAN, a(ImmutableMap.<Integer, VillagerTrades.IMerchantRecipeOption[]>builder().put(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.PAPER, 24, 8, 2), new VillagerTrades.d(1), new VillagerTrades.h(Blocks.BOOKSHELF, 6, 3, 6, 1)}).put(2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.BOOK, 4, 6, 10), new VillagerTrades.d(5), new VillagerTrades.h(Items.pQ, 1, 1, 5)}).put(3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.INK_SAC, 5, 6, 20), new VillagerTrades.d(10), new VillagerTrades.h(Items.am, 1, 4, 10)}).put(4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.WRITABLE_BOOK, 2, 6, 30), new VillagerTrades.d(15), new VillagerTrades.h(Items.CLOCK, 5, 1, 15), new VillagerTrades.h(Items.COMPASS, 4, 1, 15)}).put(5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.h(Items.NAME_TAG, 20, 1, 30)}).build())); // Paper - decompile fix
         hashmap.put(VillagerProfession.CARTOGRAPHER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.PAPER, 24, 8, 2), new VillagerTrades.h(Items.MAP, 7, 1, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.df, 10, 8, 10), new VillagerTrades.k(13, "Monument", MapIcon.Type.MONUMENT, 6, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.COMPASS, 1, 6, 20), new VillagerTrades.k(14, "Mansion", MapIcon.Type.MANSION, 6, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.h(Items.ITEM_FRAME, 7, 1, 15), new VillagerTrades.h(Items.WHITE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BLUE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIGHT_BLUE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.RED_BANNER, 3, 1, 15), new VillagerTrades.h(Items.PINK_BANNER, 3, 1, 15), new VillagerTrades.h(Items.GREEN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIME_BANNER, 3, 1, 15), new VillagerTrades.h(Items.GRAY_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BLACK_BANNER, 3, 1, 15), new VillagerTrades.h(Items.PURPLE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.MAGENTA_BANNER, 3, 1, 15), new VillagerTrades.h(Items.CYAN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.BROWN_BANNER, 3, 1, 15), new VillagerTrades.h(Items.YELLOW_BANNER, 3, 1, 15), new VillagerTrades.h(Items.ORANGE_BANNER, 3, 1, 15), new VillagerTrades.h(Items.LIGHT_GRAY_BANNER, 3, 1, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.h(Items.GLOBE_BANNER_PATTERN, 8, 1, 30)})));
         hashmap.put(VillagerProfession.CLERIC, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.ROTTEN_FLESH, 32, 8, 2), new VillagerTrades.h(Items.REDSTONE, 1, 2, 1)}, 2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.GOLD_INGOT, 3, 6, 10), new VillagerTrades.h(Items.LAPIS_LAZULI, 1, 1, 5)}, 3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.RABBIT_FOOT, 2, 6, 20), new VillagerTrades.h(Blocks.GLOWSTONE, 4, 1, 6, 10)}, 4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.SCUTE, 4, 6, 30), new VillagerTrades.b(Items.GLASS_BOTTLE, 9, 6, 30), new VillagerTrades.h(Items.ENDER_PEARL, 5, 1, 15)}, 5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.NETHER_WART, 22, 6, 30), new VillagerTrades.h(Items.EXPERIENCE_BOTTLE, 3, 1, 30)})));
         hashmap.put(VillagerProfession.ARMORER, a(ImmutableMap.of(1, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.COAL, 15, 8, 2), new VillagerTrades.h(new ItemStack(Items.IRON_LEGGINGS), 7, 1, 6, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_BOOTS), 4, 1, 6, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_HELMET), 5, 1, 6, 1, 0.2F), new VillagerTrades.h(new ItemStack(Items.IRON_CHESTPLATE), 9, 1, 6, 1, 0.2F)}, 2, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.IRON_INGOT, 4, 6, 10), new VillagerTrades.h(new ItemStack(Items.pP), 36, 1, 6, 5, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_BOOTS), 1, 1, 6, 5, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_LEGGINGS), 3, 1, 6, 5, 0.2F)}, 3, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.b(Items.LAVA_BUCKET, 1, 6, 20), new VillagerTrades.b(Items.DIAMOND, 1, 6, 20), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_HELMET), 1, 1, 6, 10, 0.2F), new VillagerTrades.h(new ItemStack(Items.CHAINMAIL_CHESTPLATE), 4, 1, 6, 10, 0.2F), new VillagerTrades.h(new ItemStack(Items.SHIELD), 5, 1, 6, 10, 0.2F)}, 4, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.e(Items.DIAMOND_LEGGINGS, 14, 2, 15, 0.2F), new VillagerTrades.e(Items.DIAMOND_BOOTS, 8, 2, 15, 0.2F)}, 5, new VillagerTrades.IMerchantRecipeOption[] { new VillagerTrades.e(Items.DIAMOND_HELMET, 8, 2, 30, 0.2F), new VillagerTrades.e(Items.DIAMOND_CHESTPLATE, 16, 2, 30, 0.2F)})));
@@ -89,6 +89,7 @@ public class VillagerTrades {
         @Override
         public MerchantRecipe a(Entity entity, Random random) {
             World world = entity.world;
+            if (!world.paperConfig.enableTreasureMaps) return null; //Paper
             BlockPosition blockposition = world.a(this.b, new BlockPosition(entity), 100, true);
 
             if (blockposition != null) {
-- 
2.21.0