PaperMC/patches/server/0979-Fix-removing-recipes-from-RecipeIterator.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412)
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.
2024-09-19 16:36:07 +02:00

41 lines
1.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake <jake.m.potrebic@gmail.com>
Date: Sat, 15 Jun 2024 18:50:18 +0100
Subject: [PATCH] Fix removing recipes from RecipeIterator
== AT ==
public net.minecraft.world.item.crafting.RecipeManager byName
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/RecipeIterator.java b/src/main/java/org/bukkit/craftbukkit/inventory/RecipeIterator.java
index 78a2afa981407de793ac940d6eb7315c5cd53b8f..33cd12d55786356dc89ab9d3872b2f7d266c3de2 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/RecipeIterator.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/RecipeIterator.java
@@ -9,6 +9,7 @@ import org.bukkit.inventory.Recipe;
public class RecipeIterator implements Iterator<Recipe> {
private final Iterator<Map.Entry<RecipeType<?>, RecipeHolder<?>>> recipes;
+ private Recipe currentRecipe; // Paper - fix removing recipes from RecipeIterator
public RecipeIterator() {
this.recipes = MinecraftServer.getServer().getRecipeManager().byType.entries().iterator();
@@ -21,11 +22,19 @@ public class RecipeIterator implements Iterator<Recipe> {
@Override
public Recipe next() {
- return this.recipes.next().getValue().toBukkitRecipe();
+ // Paper start - fix removing recipes from RecipeIterator
+ this.currentRecipe = this.recipes.next().getValue().toBukkitRecipe();
+ return this.currentRecipe;
+ // Paper end - fix removing recipes from RecipeIterator
}
@Override
public void remove() {
+ // Paper start - fix removing recipes from RecipeIterator
+ if (this.currentRecipe instanceof org.bukkit.Keyed keyed) {
+ MinecraftServer.getServer().getRecipeManager().byName.remove(org.bukkit.craftbukkit.util.CraftNamespacedKey.toMinecraft(keyed.getKey()));
+ }
+ // Paper end - fix removing recipes from RecipeIterator
this.recipes.remove();
}
}