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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
1.2 KiB
Diff
30 Zeilen
1.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Irmo van den Berge <irmo.vandenberge@ziggo.nl>
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Date: Wed, 10 Mar 2021 21:26:31 +0100
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Subject: [PATCH] Add fast alternative constructor for Rotations
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diff --git a/src/main/java/net/minecraft/core/Rotations.java b/src/main/java/net/minecraft/core/Rotations.java
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index e6c97efb3aa89646149d11bb0ae4420b3977d214..27007280dba9e6d19a50dc2a4b160e96b20c67f7 100644
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--- a/src/main/java/net/minecraft/core/Rotations.java
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+++ b/src/main/java/net/minecraft/core/Rotations.java
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@@ -34,6 +34,18 @@ public class Rotations {
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this(serialized.getFloat(0), serialized.getFloat(1), serialized.getFloat(2));
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}
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+ // Paper start - faster alternative constructor
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+ private Rotations(float x, float y, float z, Void dummy_var) {
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+ this.x = x;
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+ this.y = y;
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+ this.z = z;
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+ }
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+
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+ public static Rotations createWithoutValidityChecks(float x, float y, float z) {
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+ return new Rotations(x, y, z, null);
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+ }
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+ // Paper end - faster alternative constructor
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+
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public ListTag save() {
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ListTag listTag = new ListTag();
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listTag.add(FloatTag.valueOf(this.x));
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