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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.
21 Zeilen
1.2 KiB
Diff
21 Zeilen
1.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
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Date: Sat, 12 Feb 2022 12:40:50 -0700
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Subject: [PATCH] Add missing Validate calls to CraftServer#getSpawnLimit
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Copies appropriate checks from CraftWorld#getSpawnLimit
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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 d06e1f67e675034fb5d2ed71f409848155521ada..87ef72b05f6bbeac7f0fcdb0bb27b359b277898c 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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@@ -2337,6 +2337,8 @@ public final class CraftServer implements Server {
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@Override
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public int getSpawnLimit(SpawnCategory spawnCategory) {
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// Paper start - Add mobcaps commands
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+ Preconditions.checkArgument(spawnCategory != null, "SpawnCategory cannot be null");
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+ Preconditions.checkArgument(CraftSpawnCategory.isValidForLimits(spawnCategory), "SpawnCategory." + spawnCategory + " does not have a spawn limit.");
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return this.getSpawnLimitUnsafe(spawnCategory);
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}
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public int getSpawnLimitUnsafe(final SpawnCategory spawnCategory) {
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