PaperMC/patches/server/0667-Option-to-have-default-CustomSpawners-in-custom-worl.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

32 lines
2.7 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 19 Feb 2022 20:15:41 -0800
Subject: [PATCH] Option to have default CustomSpawners in custom worlds
By default, only LevelStem's that specifically match the ResourceKey for
OVERWORLD will have the 5 (currently) impls of CustomSpawner (for
phantoms, wandering traders, etc.). This adds an option to instead of
just looking at the LevelStem key, look at the DimensionType key which
is one level below that. Defaults to off to keep vanilla behavior.
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index d45f234fe389ade739bb13f824a1f650709220b8..413a37991d1df6314dd9938e5eb5f28f5b69efb8 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -631,7 +631,15 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
this.commandStorage = new CommandStorage(worldpersistentdata);
} else {
ChunkProgressListener worldloadlistener = this.progressListenerFactory.create(this.worldData.getGameRules().getInt(GameRules.RULE_SPAWN_CHUNK_RADIUS));
- world = new ServerLevel(this, this.executor, worldSession, iworlddataserver, worldKey, worlddimension, worldloadlistener, flag, j, ImmutableList.of(), true, this.overworld().getRandomSequences(), org.bukkit.World.Environment.getEnvironment(dimension), gen, biomeProvider);
+ // Paper start - option to use the dimension_type to check if spawners should be added. I imagine mojang will add some datapack-y way of managing this in the future.
+ final List<CustomSpawner> spawners;
+ if (io.papermc.paper.configuration.GlobalConfiguration.get().misc.useDimensionTypeForCustomSpawners && this.registryAccess().registryOrThrow(Registries.DIMENSION_TYPE).getResourceKey(worlddimension.type().value()).orElseThrow() == net.minecraft.world.level.dimension.BuiltinDimensionTypes.OVERWORLD) {
+ spawners = list;
+ } else {
+ spawners = Collections.emptyList();
+ }
+ world = new ServerLevel(this, this.executor, worldSession, iworlddataserver, worldKey, worlddimension, worldloadlistener, flag, j, spawners, true, this.overworld().getRandomSequences(), org.bukkit.World.Environment.getEnvironment(dimension), gen, biomeProvider);
+ // Paper end - option to use the dimension_type to check if spawners should be added
}
worlddata.setModdedInfo(this.getServerModName(), this.getModdedStatus().shouldReportAsModified());