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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 04:20:04 +01:00
Paper/patches/server/0888-Fix-NPE-in-AdvancementProgress-getDateAwarded.patch
Bjarne Koll c5a10665b8
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.
2024-09-19 16:36:07 +02:00

20 Zeilen
1.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 23 Sep 2023 22:07:15 -0700
Subject: [PATCH] Fix NPE in AdvancementProgress#getDateAwarded
diff --git a/src/main/java/org/bukkit/craftbukkit/advancement/CraftAdvancementProgress.java b/src/main/java/org/bukkit/craftbukkit/advancement/CraftAdvancementProgress.java
index aeb04a65a1201f05fd02151fce5756d797c63615..ec3b9cb901913b093c3eb0bda8dc0dbb738c165e 100644
--- a/src/main/java/org/bukkit/craftbukkit/advancement/CraftAdvancementProgress.java
+++ b/src/main/java/org/bukkit/craftbukkit/advancement/CraftAdvancementProgress.java
@@ -44,7 +44,7 @@ public class CraftAdvancementProgress implements AdvancementProgress {
@Override
public Date getDateAwarded(String criteria) {
CriterionProgress criterion = this.handle.getCriterion(criteria);
- return (criterion == null) ? null : Date.from(criterion.getObtained());
+ return (criterion == null) ? null : criterion.getObtained() == null ? null : Date.from(criterion.getObtained()); // Paper - fix NPE if criterion isn't obtained
}
@Override