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Improve performance of PoiCompetitorScan by unrolling stream (#11871)

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ChromMob 2025-01-04 21:23:21 +01:00 committed by GitHub
parent 4106da712c
commit 6ab13521b7
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1 changed files with 42 additions and 0 deletions
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paper-server/patches/sources/net/minecraft/world/entity/ai/behavior/PoiCompetitorScan.java.patch Normal file
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@ -0,0 +1,42 @@
--- a/net/minecraft/world/entity/ai/behavior/PoiCompetitorScan.java
+++ b/net/minecraft/world/entity/ai/behavior/PoiCompetitorScan.java
@@ -22,13 +_,32 @@
level.getPoiManager()
.getType(globalPos.pos())
.ifPresent(
- poi -> instance.<List<LivingEntity>>get(nearestLivingEntities)
- .stream()
- .filter(entity -> entity instanceof Villager && entity != villager)
- .map(entity -> (Villager)entity)
- .filter(LivingEntity::isAlive)
- .filter(v -> competesForSameJobsite(globalPos, poi, v))
- .reduce(villager, PoiCompetitorScan::selectWinner)
+ // Paper start - Improve performance of PoiCompetitorScan by unrolling stream
+ // The previous logic used Stream#reduce to simulate a form of single-iteration bubble sort
+ // in which the "winning" villager would maintain MemoryModuleType.JOB_SITE while all others
+ // would lose said memory module type by passing each "current winner" and incoming next
+ // villager to #selectWinner.
+ poi -> {
+ final List<LivingEntity> livingEntities = instance.get(nearestLivingEntities);
+
+ Villager winner = villager;
+ for (final LivingEntity other : livingEntities) {
+ if (other == villager) {
+ continue;
+ }
+ if (!(other instanceof final net.minecraft.world.entity.npc.Villager otherVillager)) {
+ continue;
+ }
+ if (!other.isAlive()) {
+ continue;
+ }
+ if (!competesForSameJobsite(globalPos, poi, otherVillager)) {
+ continue;
+ }
+ winner = selectWinner(winner, otherVillager);
+ }
+ }
+ // Paper end - Improve performance of PoiCompetitorScan by unrolling stream
);
return true;
}