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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.
20 Zeilen
1.4 KiB
Diff
20 Zeilen
1.4 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Sun, 19 Mar 2023 20:36:22 -0700
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Subject: [PATCH] Fix crash relating to bad recipes in furnace-like tile
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entities
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diff --git a/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
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index f1a7054a0ee1842e78338d8984f151b24c352849..65ab9b22f724877b68f4f25aad2831e2cb080b19 100644
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--- a/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
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+++ b/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
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@@ -616,6 +616,7 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
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Entry<ResourceLocation> entry = (Entry) objectiterator.next();
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worldserver.getRecipeManager().byKey((ResourceLocation) entry.getKey()).ifPresent((recipeholder) -> {
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+ if (!(recipeholder.value() instanceof AbstractCookingRecipe)) return; // Paper - don't process non-cooking recipes
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list.add(recipeholder);
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AbstractFurnaceBlockEntity.createExperience(worldserver, vec3d, entry.getIntValue(), ((AbstractCookingRecipe) recipeholder.value()).getExperience(), blockposition, entityplayer, itemstack, amount); // CraftBukkit
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});
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