Remove wall-time / unused skip tick protection (#11412)
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.
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794 changed files with 402 additions and 282 deletions
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patches/server/0585-Left-handed-API.patch
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patches/server/0585-Left-handed-API.patch
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@ -0,0 +1,27 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: William Blake Galbreath <blake.galbreath@gmail.com>
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Date: Thu, 14 Oct 2021 12:36:58 -0500
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Subject: [PATCH] Left handed API
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java
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index fb29afb6517b009b81285adc9e6dca2eb7f74aee..921594a78ea511337434b29b5bc1a037eb30992c 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java
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@@ -144,6 +144,16 @@ public abstract class CraftMob extends CraftLivingEntity implements Mob {
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public int getMaxHeadPitch() {
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return getHandle().getMaxHeadXRot();
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}
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+
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+ @Override
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+ public boolean isLeftHanded() {
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+ return getHandle().isLeftHanded();
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+ }
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+
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+ @Override
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+ public void setLeftHanded(boolean leftHanded) {
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+ getHandle().setLeftHanded(leftHanded);
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+ }
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// Paper end
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// Paper start
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