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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.
19 lines
1.1 KiB
Diff
19 lines
1.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Noah van der Aa <ndvdaa@gmail.com>
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Date: Tue, 6 Dec 2022 18:45:54 +0100
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Subject: [PATCH] Limit pet look distance
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diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/FollowOwnerGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/FollowOwnerGoal.java
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index bf9ad63343fa07105f217625bb81ed637a7f7f7e..15d7be9ed4a973044dd4399db46aaa244730b836 100644
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--- a/src/main/java/net/minecraft/world/entity/ai/goal/FollowOwnerGoal.java
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+++ b/src/main/java/net/minecraft/world/entity/ai/goal/FollowOwnerGoal.java
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@@ -72,7 +72,7 @@ public class FollowOwnerGoal extends Goal {
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public void tick() {
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boolean bl = this.tamable.shouldTryTeleportToOwner();
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if (!bl) {
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- this.tamable.getLookControl().setLookAt(this.owner, 10.0F, (float)this.tamable.getMaxHeadXRot());
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+ if (this.tamable.distanceToSqr(this.owner) <= 16 * 16) this.tamable.getLookControl().setLookAt(this.owner, 10.0F, (float)this.tamable.getMaxHeadXRot()); // Paper - Limit pet look distance
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}
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if (--this.timeToRecalcPath <= 0) {
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