mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-28 20:07:41 +01:00
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 lines
2.3 KiB
Diff
51 lines
2.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
|
|
Date: Wed, 9 Aug 2023 14:00:40 -0700
|
|
Subject: [PATCH] Remove UpgradeData neighbour ticks outside of range
|
|
|
|
The lists are only supposed to contain ticks for the 1 radius
|
|
neighbours of the chunk.
|
|
|
|
diff --git a/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java b/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
|
|
index bfb73e016f107fb8da12903bf233a824d062ed73..22b6d0851a51da180cd8fbbe6554c5370f5ac5bd 100644
|
|
--- a/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
|
|
+++ b/src/main/java/net/minecraft/world/level/chunk/UpgradeData.java
|
|
@@ -100,6 +100,25 @@ public class UpgradeData {
|
|
}
|
|
}
|
|
|
|
+ // Paper start - filter out relocated neighbour ticks
|
|
+ // The lists are only supposed to contain ticks for the 1 radius neighbours of the chunk
|
|
+ private static <T> void filterTickList(int chunkX, int chunkZ, List<SavedTick<T>> ticks) {
|
|
+ for (java.util.Iterator<SavedTick<T>> iterator = ticks.iterator(); iterator.hasNext();) {
|
|
+ SavedTick<T> tick = iterator.next();
|
|
+ BlockPos tickPos = tick.pos();
|
|
+ int tickCX = tickPos.getX() >> 4;
|
|
+ int tickCZ = tickPos.getZ() >> 4;
|
|
+
|
|
+ int dist = Math.max(Math.abs(chunkX - tickCX), Math.abs(chunkZ - tickCZ));
|
|
+
|
|
+ if (dist != 1) {
|
|
+ LOGGER.warn("Neighbour tick '" + tick + "' serialized in chunk (" + chunkX + "," + chunkZ + ") is too far (" + tickCX + "," + tickCZ + ")");
|
|
+ iterator.remove();
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ // Paper end - filter out relocated neighbour ticks
|
|
+
|
|
public void upgrade(LevelChunk chunk) {
|
|
this.upgradeInside(chunk);
|
|
|
|
@@ -107,6 +126,11 @@ public class UpgradeData {
|
|
upgradeSides(chunk, direction8);
|
|
}
|
|
|
|
+ // Paper start - filter out relocated neighbour ticks
|
|
+ filterTickList(chunk.locX, chunk.locZ, this.neighborBlockTicks);
|
|
+ filterTickList(chunk.locX, chunk.locZ, this.neighborFluidTicks);
|
|
+ // Paper end - filter out relocated neighbour ticks
|
|
+
|
|
Level level = chunk.getLevel();
|
|
this.neighborBlockTicks.forEach(tick -> {
|
|
Block block = tick.type() == Blocks.AIR ? level.getBlockState(tick.pos()).getBlock() : tick.type();
|