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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.
20 lines
978 B
Diff
20 lines
978 B
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Philip Kelley <philip@thoriumcube.org>
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Date: Wed, 16 Mar 2022 12:05:59 +0000
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Subject: [PATCH] Fix saving in unloadWorld
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Change savingDisabled to false to ensure ServerLevel's saving logic gets called when unloadWorld is called with save = true
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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index 56fe4a91b557db7bd74c031046231a3bc7ba72c8..7cc0cd19996df0b37fa0b7c4dc34ee99ad9499cb 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -1381,7 +1381,7 @@ public final class CraftServer implements Server {
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try {
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if (save) {
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- handle.save(null, true, true);
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+ handle.save(null, true, false); // Paper - Fix saving in unloadWorld
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}
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handle.getChunkSource().close(save);
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