geforkt von Mirrors/Paper
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.
51 Zeilen
2.3 KiB
Diff
51 Zeilen
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Wed, 9 Aug 2023 14:00:40 -0700
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Subject: [PATCH] Remove UpgradeData neighbour ticks outside of range
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The lists are only supposed to contain ticks for the 1 radius
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neighbours of the chunk.
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diff --git a/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java b/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
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index bfb73e016f107fb8da12903bf233a824d062ed73..22b6d0851a51da180cd8fbbe6554c5370f5ac5bd 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
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@@ -100,6 +100,25 @@ public class UpgradeData {
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}
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}
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+ // Paper start - filter out relocated neighbour ticks
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+ // The lists are only supposed to contain ticks for the 1 radius neighbours of the chunk
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+ private static <T> void filterTickList(int chunkX, int chunkZ, List<SavedTick<T>> ticks) {
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+ for (java.util.Iterator<SavedTick<T>> iterator = ticks.iterator(); iterator.hasNext();) {
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+ SavedTick<T> tick = iterator.next();
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+ BlockPos tickPos = tick.pos();
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+ int tickCX = tickPos.getX() >> 4;
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+ int tickCZ = tickPos.getZ() >> 4;
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+
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+ int dist = Math.max(Math.abs(chunkX - tickCX), Math.abs(chunkZ - tickCZ));
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+
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+ if (dist != 1) {
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+ LOGGER.warn("Neighbour tick '" + tick + "' serialized in chunk (" + chunkX + "," + chunkZ + ") is too far (" + tickCX + "," + tickCZ + ")");
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+ iterator.remove();
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+ }
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+ }
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+ }
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+ // Paper end - filter out relocated neighbour ticks
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+
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public void upgrade(LevelChunk chunk) {
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this.upgradeInside(chunk);
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@@ -107,6 +126,11 @@ public class UpgradeData {
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upgradeSides(chunk, direction8);
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}
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+ // Paper start - filter out relocated neighbour ticks
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+ filterTickList(chunk.locX, chunk.locZ, this.neighborBlockTicks);
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+ filterTickList(chunk.locX, chunk.locZ, this.neighborFluidTicks);
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+ // Paper end - filter out relocated neighbour ticks
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+
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Level level = chunk.getLevel();
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this.neighborBlockTicks.forEach(tick -> {
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Block block = tick.type() == Blocks.AIR ? level.getBlockState(tick.pos()).getBlock() : tick.type();
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