Paper/patches/server/0118-Configurable-Cartographer-Treasure-Maps.patch

From 0000000000000000000000000000000000000000 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/net/minecraft/world/entity/npc/VillagerTrades.java b/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
index 9358498491cd25ef760527ebd83188b76f8458f1..73a222d91dab1d5d1390b018f9537624aaff0798 100644
--- a/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
+++ b/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
@@ -1828,7 +1828,8 @@ public class VillagerTrades {
                 return null;
             } else {
                 ServerLevel serverLevel = (ServerLevel)entity.level();
-                BlockPos blockPos = serverLevel.findNearestMapStructure(this.destination, entity.blockPosition(), 100, true);
+                if (!serverLevel.paperConfig().environment.treasureMaps.enabled) return null; // Paper - Configurable cartographer treasure maps
+                BlockPos blockPos = serverLevel.findNearestMapStructure(this.destination, entity.blockPosition(), 100, !serverLevel.paperConfig().environment.treasureMaps.findAlreadyDiscoveredVillager); // Paper - Configurable cartographer treasure maps
                 if (blockPos != null) {
                     ItemStack itemStack = MapItem.create(serverLevel, blockPos.getX(), blockPos.getZ(), (byte)2, true, true);
                     MapItem.renderBiomePreviewMap(serverLevel, itemStack);
diff --git a/src/main/java/net/minecraft/world/level/storage/loot/functions/ExplorationMapFunction.java b/src/main/java/net/minecraft/world/level/storage/loot/functions/ExplorationMapFunction.java
index e7f2cc799e7c50a9525845347a3f235f7bfefe41..709bc6838d20c420c5a4b3a994a041e594bd6210 100644
--- a/src/main/java/net/minecraft/world/level/storage/loot/functions/ExplorationMapFunction.java
+++ b/src/main/java/net/minecraft/world/level/storage/loot/functions/ExplorationMapFunction.java
@@ -84,8 +84,17 @@ public class ExplorationMapFunction extends LootItemConditionalFunction {
             Vec3 vec3 = context.getParamOrNull(LootContextParams.ORIGIN);
             if (vec3 != null) {
                 ServerLevel serverLevel = context.getLevel();
+                // Paper start - Configurable cartographer treasure maps
+                if (!serverLevel.paperConfig().environment.treasureMaps.enabled) {
+                    /*
+                     * NOTE: I fear users will just get a plain map as their "treasure"
+                     * This is preferable to disrespecting the config.
+                     */
+                    return stack;
+                }
+                // Paper end - Configurable cartographer treasure maps
                 BlockPos blockPos = serverLevel.findNearestMapStructure(
-                    this.destination, BlockPos.containing(vec3), this.searchRadius, this.skipKnownStructures
+                    this.destination, BlockPos.containing(vec3), this.searchRadius, !serverLevel.paperConfig().environment.treasureMaps.findAlreadyDiscoveredLootTable.or(!this.skipKnownStructures) // Paper - Configurable cartographer treasure maps
                 );
                 if (blockPos != null) {
                     ItemStack itemStack = MapItem.create(serverLevel, blockPos.getX(), blockPos.getZ(), this.zoom, true, true);