PaperMC/patches/server/0118-Configurable-Cartographer-Treasure-Maps.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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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 f95999daa1955dd4d919d0e668fe099901a0481c..770a91fcc351a2d1de4762c0fd9bae2b49c363b5 100644
--- a/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
+++ b/src/main/java/net/minecraft/world/entity/npc/VillagerTrades.java
@@ -386,7 +386,8 @@ 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 321384730cacbdc22eedc53651e4d24f06c73b99..b734c0f9b831c20a239b5341ff3a0b4d6a6c102c 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
@@ -68,7 +68,16 @@ public class ExplorationMapFunction extends LootItemConditionalFunction {
Vec3 vec3 = context.getParamOrNull(LootContextParams.ORIGIN);
if (vec3 != null) {
ServerLevel serverLevel = context.getLevel();
- BlockPos blockPos = serverLevel.findNearestMapStructure(this.destination, new BlockPos(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, new BlockPos(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);