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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.
24 lines
1.1 KiB
Diff
24 lines
1.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: chase <chasewhip20@gmail.com>
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Date: Wed, 2 Dec 2020 22:43:39 -0800
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Subject: [PATCH] add per world spawn limits
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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index dc16ed952719a5203b1b9a61e0ad2bd39021e8f1..a41c6705aa7e04ad32395f89b95ca76617c9416d 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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@@ -222,6 +222,13 @@ public class CraftWorld extends CraftRegionAccessor implements World {
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this.biomeProvider = biomeProvider;
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this.environment = env;
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+ // Paper start - per world spawn limits
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+ for (SpawnCategory spawnCategory : SpawnCategory.values()) {
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+ if (CraftSpawnCategory.isValidForLimits(spawnCategory)) {
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+ setSpawnLimit(spawnCategory, this.world.paperConfig().entities.spawning.spawnLimits.getInt(CraftSpawnCategory.toNMS(spawnCategory)));
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+ }
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+ }
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+ // Paper end - per world spawn limits
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}
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@Override
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