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Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
31 lines
2.3 KiB
Diff
31 lines
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: MrPowerGamerBR <git@mrpowergamerbr.com>
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Date: Tue, 21 Nov 2023 12:16:39 -0300
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Subject: [PATCH] Lazily create LootContext for criterions
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For each player on each tick, enter block triggers are invoked, and these create loot contexts that are promptly thrown away since the trigger doesn't pass the predicate
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To avoid this, we now lazily create the LootContext if the criterion passes the predicate AND if any of the listener triggers require a loot context instance
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diff --git a/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java b/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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index 805459ba815520165c86a537fbb1f3e04b85bfbd..a327973e37b5b8d4e15683ef24548482ac3dc3d5 100644
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--- a/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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+++ b/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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@@ -45,14 +45,14 @@ public abstract class SimpleCriterionTrigger<T extends SimpleCriterionTrigger.Si
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PlayerAdvancements playerAdvancements = player.getAdvancements();
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Set<CriterionTrigger.Listener<T>> set = (Set) playerAdvancements.criterionData.get(this); // Paper - fix AdvancementDataPlayer leak
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if (set != null && !set.isEmpty()) {
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- LootContext lootContext = EntityPredicate.createContext(player, player);
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+ LootContext lootContext = null; // EntityPredicate.createContext(player, player); // Paper - Perf: lazily create LootContext for criterions
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List<CriterionTrigger.Listener<T>> list = null;
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for(CriterionTrigger.Listener<T> listener : set) {
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T simpleInstance = listener.trigger();
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if (predicate.test(simpleInstance)) {
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Optional<ContextAwarePredicate> optional = simpleInstance.player();
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- if (optional.isEmpty() || optional.get().matches(lootContext)) {
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+ if (optional.isEmpty() || optional.get().matches(lootContext = (lootContext == null ? EntityPredicate.createContext(player, player) : lootContext))) { // Paper - Perf: lazily create LootContext for criterions
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if (list == null) {
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list = Lists.newArrayList();
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}
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