mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-18 20:53:09 +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.
22 lines
1.1 KiB
Diff
22 lines
1.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Shane Freeder <theboyetronic@gmail.com>
|
|
Date: Wed, 5 Apr 2023 20:15:47 +0100
|
|
Subject: [PATCH] Prevent GameEvents being fired from unloaded chunks
|
|
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
index 07f7752651095abdd9e9408a419aed7d78173d3a..fd4d1cab675b7b423ac0fdf9a8c9f472ddc68c36 100644
|
|
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
@@ -1372,6 +1372,11 @@ public class ServerLevel extends Level implements WorldGenLevel {
|
|
|
|
@Override
|
|
public void gameEvent(Holder<GameEvent> event, Vec3 emitterPos, GameEvent.Context emitter) {
|
|
+ // Paper start - Prevent GameEvents being fired from unloaded chunks
|
|
+ if (this.getChunkIfLoadedImmediately((Mth.floor(emitterPos.x) >> 4), (Mth.floor(emitterPos.z) >> 4)) == null) {
|
|
+ return;
|
|
+ }
|
|
+ // Paper end - Prevent GameEvents being fired from unloaded chunks
|
|
this.gameEventDispatcher.post(event, emitterPos, emitter);
|
|
}
|
|
|