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c5a10665b8
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.
37 lines
2.3 KiB
Diff
37 lines
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Noah van der Aa <ndvdaa@gmail.com>
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Date: Fri, 7 Jan 2022 11:58:26 +0100
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Subject: [PATCH] Don't tick markers
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Fixes https://github.com/PaperMC/Paper/issues/7276 and https://github.com/PaperMC/Paper/issues/8118
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by using a config option that, when set to false, does not add markers to the entity
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tick list at all and ignores them in Spigot's activation range checks. The entity tick
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list is only used in the tick and tickPassenger methods, so we can safely not add the
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markers to it. When the config option is set to true, markers are ticked as normal.
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diff --git a/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java b/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java
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index 67fcba634f8183bb33834ac3b2c3dcfb8d87129e..777b789fdcdf297309cfb36fc7f77e3fdb6327ca 100644
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--- a/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java
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+++ b/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java
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@@ -109,7 +109,7 @@ public final class EntityCommand implements PaperSubcommand {
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ChunkPos chunk = e.chunkPosition();
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info.left++;
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info.right.put(chunk, info.right.getOrDefault(chunk, 0) + 1);
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- if (!chunkProviderServer.isPositionTicking(e)) {
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+ if (!chunkProviderServer.isPositionTicking(e) || (e instanceof net.minecraft.world.entity.Marker && !world.paperConfig().entities.markers.tick)) { // Paper - Configurable marker ticking
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nonEntityTicking.merge(key, 1, Integer::sum);
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}
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});
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diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
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index 60a77bd04489ee592ec61d3d739cb3062c1eefbb..492e8a2ff5618c45bfffa3284f03be14ff162ce8 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
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+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
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@@ -2160,6 +2160,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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}
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public void onTickingStart(Entity entity) {
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+ if (entity instanceof net.minecraft.world.entity.Marker && !paperConfig().entities.markers.tick) return; // Paper - Configurable marker ticking
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ServerLevel.this.entityTickList.add(entity);
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}
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