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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.
30 Zeilen
1.4 KiB
Diff
30 Zeilen
1.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
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Date: Mon, 21 Jun 2021 21:55:23 -0400
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Subject: [PATCH] Update head rotation in missing places
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In certain areas the player's head rotation could be desynced when teleported/moved.
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This is because bukkit uses a separate head rotation field for yaw.
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This issue only applies to players.
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diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
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index f21bf6c8bbf30c59f1588c2105dbd7f80c07a0f1..e34260c80d19869c9bec5ba67f7ce7db9d13a1f1 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
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+++ b/src/main/java/net/minecraft/world/entity/Entity.java
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@@ -1844,6 +1844,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
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this.setXRot(Mth.clamp(pitch, -90.0F, 90.0F) % 360.0F);
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this.yRotO = this.getYRot();
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this.xRotO = this.getXRot();
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+ this.setYHeadRot(yaw); // Paper - Update head rotation
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}
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public void absMoveTo(double x, double y, double z) {
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@@ -1886,6 +1887,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
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this.setXRot(pitch);
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this.setOldPosAndRot();
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this.reapplyPosition();
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+ this.setYHeadRot(yaw); // Paper - Update head rotation
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}
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public final void setOldPosAndRot() {
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