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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.
20 lines
1.0 KiB
Diff
20 lines
1.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: BrodyBeckwith <brody@beckwith.dev>
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Date: Fri, 9 Oct 2020 20:30:12 -0400
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Subject: [PATCH] Allow disabling mob spawner spawn egg transformation
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diff --git a/src/main/java/net/minecraft/world/item/SpawnEggItem.java b/src/main/java/net/minecraft/world/item/SpawnEggItem.java
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index 6e91fec416493b2fabe1e8a6214ab7673212e451..9cea8da84f39bb3f687139ef213ccea358724dee 100644
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--- a/src/main/java/net/minecraft/world/item/SpawnEggItem.java
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+++ b/src/main/java/net/minecraft/world/item/SpawnEggItem.java
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@@ -69,6 +69,8 @@ public class SpawnEggItem extends Item {
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EntityType entitytypes;
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if (tileentity instanceof Spawner) {
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+ if (world.paperConfig().entities.spawning.disableMobSpawnerSpawnEggTransformation) return InteractionResult.FAIL; // Paper - Allow disabling mob spawner spawn egg transformation
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+
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Spawner spawner = (Spawner) tileentity;
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entitytypes = this.getType(itemstack);
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