PaperMC/patches/server/0804-Fix-SpawnEggMeta-get-setSpawnedType.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

41 lines
1.8 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 23 Feb 2023 13:19:13 -0800
Subject: [PATCH] Fix SpawnEggMeta#get/setSpawnedType
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSpawnEgg.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSpawnEgg.java
index ea9937ad27817112f71e8a0a816865961ce19a61..6c2c3b514be0dab47f3e44f65bdc6a3574e59b7c 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSpawnEgg.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSpawnEgg.java
@@ -94,6 +94,30 @@ public class CraftMetaSpawnEgg extends CraftMetaItem implements SpawnEggMeta {
public void setSpawnedType(EntityType type) {
throw new UnsupportedOperationException("Must change item type to set spawned type");
}
+ // Paper start
+ @Override
+ public EntityType getCustomSpawnedType() {
+ return java.util.Optional.ofNullable(this.entityTag)
+ .map(tag -> tag.getString(ENTITY_ID.NBT))
+ .map(net.minecraft.resources.ResourceLocation::tryParse)
+ .map(key -> key.getNamespace().equals("minecraft") ? EntityType.fromName(key.getPath()) : null)
+ .orElse(null);
+ }
+
+ @Override
+ public void setCustomSpawnedType(final EntityType type) {
+ if (type == null) {
+ if (this.entityTag != null) {
+ this.entityTag.remove(ENTITY_ID.NBT);
+ }
+ } else {
+ if (this.entityTag == null) {
+ this.entityTag = new CompoundTag();
+ }
+ this.entityTag.putString(ENTITY_ID.NBT, type.key().toString());
+ }
+ }
+ // Paper end
@Override
public EntitySnapshot getSpawnedEntity() {