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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.
23 Zeilen
1.2 KiB
Diff
23 Zeilen
1.2 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: Mon, 30 Aug 2021 15:22:18 +0200
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Subject: [PATCH] Prevent softlocked end exit portal generation
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diff --git a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
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index 460744ec3a1abe9a2d9d16c2ec521c52c7f8db95..98d1c097fdbbc8080624f365634e0812a5eea5ac 100644
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--- a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
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+++ b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
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@@ -468,6 +468,11 @@ public class EndDragonFight {
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}
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}
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+ // Paper start - Prevent "softlocked" exit portal generation
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+ if (this.portalLocation.getY() <= this.level.getMinBuildHeight()) {
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+ this.portalLocation = this.portalLocation.atY(this.level.getMinBuildHeight() + 1);
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+ }
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+ // Paper end - Prevent "softlocked" exit portal generation
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if (worldgenendtrophy.place(FeatureConfiguration.NONE, this.level, this.level.getChunkSource().getGenerator(), RandomSource.create(), this.portalLocation)) {
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int i = Mth.positiveCeilDiv(4, 16);
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