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c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
35 lines
2.9 KiB
Diff
35 lines
2.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Fri, 9 Dec 2022 03:10:23 -0800
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Subject: [PATCH] Improve/fix EntityTargetLivingEntityEvent
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diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/StopAttackingIfTargetInvalid.java b/src/main/java/net/minecraft/world/entity/ai/behavior/StopAttackingIfTargetInvalid.java
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index cc7d161b53a2295fa1745254eafb8a70c7b6c7b2..508d4f391fe563453d7bf6782b3082741c358006 100644
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--- a/src/main/java/net/minecraft/world/entity/ai/behavior/StopAttackingIfTargetInvalid.java
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+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/StopAttackingIfTargetInvalid.java
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@@ -47,9 +47,22 @@ public class StopAttackingIfTargetInvalid {
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if (entityinsentient.canAttack(entityliving) && (!shouldForgetIfTargetUnreachable || !StopAttackingIfTargetInvalid.isTiredOfTryingToReachTarget(entityinsentient, behaviorbuilder_b.tryGet(memoryaccessor1))) && entityliving.isAlive() && entityliving.level() == entityinsentient.level() && !alternativeCondition.test(entityliving)) {
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return true;
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} else {
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+ // Paper start - better track target change reason
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+ final EntityTargetEvent.TargetReason reason;
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+ if (!entityinsentient.canAttack(entityliving)) {
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+ reason = EntityTargetEvent.TargetReason.TARGET_INVALID;
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+ } else if (shouldForgetIfTargetUnreachable && StopAttackingIfTargetInvalid.isTiredOfTryingToReachTarget(entityinsentient, behaviorbuilder_b.tryGet(memoryaccessor1))) {
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+ reason = EntityTargetEvent.TargetReason.FORGOT_TARGET;
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+ } else if (!entityliving.isAlive()) {
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+ reason = EntityTargetEvent.TargetReason.TARGET_DIED;
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+ } else if (entityliving.level() != entityinsentient.level()) {
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+ reason = EntityTargetEvent.TargetReason.TARGET_OTHER_LEVEL;
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+ } else {
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+ reason = EntityTargetEvent.TargetReason.TARGET_INVALID;
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+ }
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+ // Paper end
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// CraftBukkit start
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- LivingEntity old = entityinsentient.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET).orElse(null);
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- EntityTargetEvent event = CraftEventFactory.callEntityTargetLivingEvent(entityinsentient, null, (old != null && !old.isAlive()) ? EntityTargetEvent.TargetReason.TARGET_DIED : EntityTargetEvent.TargetReason.FORGOT_TARGET);
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+ EntityTargetEvent event = CraftEventFactory.callEntityTargetLivingEvent(entityinsentient, null, reason); // Paper
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if (event.isCancelled()) {
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return false;
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}
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