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 43fb44b8cd164b0815335a32f04879b301a54728..8d0ff6e820af9a3f67e25298b34d1539841339d8 100644
--- a/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
+++ b/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
@@ -451,7 +451,8 @@ 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
+                BlockPos blockPos = serverLevel.findNearestMapStructure(this.destination, entity.blockPosition(), 100, !serverLevel.paperConfig().environment.treasureMaps.findAlreadyDiscoveredVillager); // Paper
                 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 dcc6da6641e78cd80bd148ba644475811a1fbf4d..d03d9451044bddd8403fccb9eb412c5d6803a518 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
@@ -75,7 +75,16 @@ public class ExplorationMapFunction extends LootItemConditionalFunction {
             Vec3 vec3 = context.getParamOrNull(LootContextParams.ORIGIN);
             if (vec3 != null) {
                 ServerLevel serverLevel = context.getLevel();
-                BlockPos blockPos = serverLevel.findNearestMapStructure(this.destination, BlockPos.containing(vec3), this.searchRadius, this.skipKnownStructures);
+                // Paper start
+                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
+                BlockPos blockPos = serverLevel.findNearestMapStructure(this.destination, BlockPos.containing(vec3), this.searchRadius, !serverLevel.paperConfig().environment.treasureMaps.findAlreadyDiscoveredLootTable.or(!this.skipKnownStructures)); // Paper
                 if (blockPos != null) {
                     ItemStack itemStack = MapItem.create(serverLevel, blockPos.getX(), blockPos.getZ(), this.zoom, true, true);
                     MapItem.renderBiomePreviewMap(serverLevel, itemStack);