PaperMC/patches/server/0882-Fix-silent-equipment-change-for-mobs.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

112 lines
5.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Lulu13022002 <41980282+Lulu13022002@users.noreply.github.com>
Date: Thu, 31 Aug 2023 17:32:48 +0200
Subject: [PATCH] Fix silent equipment change for mobs
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index e87360e21e6eb7b0161c34a3ac6cb83d18bcd1e8..cf1f6a0081f0dbcf43842ec23accf6c3ae9b79d8 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -1106,19 +1106,26 @@ public abstract class Mob extends LivingEntity implements EquipmentUser, Leashab
@Override
public void setItemSlot(EquipmentSlot slot, ItemStack stack) {
+ // Paper start - Fix silent equipment change
+ setItemSlot(slot, stack, false);
+ }
+
+ @Override
+ public void setItemSlot(EquipmentSlot slot, ItemStack stack, boolean silent) {
+ // Paper end - Fix silent equipment change
this.verifyEquippedItem(stack);
switch (slot.getType()) {
case HAND:
- this.onEquipItem(slot, (ItemStack) this.handItems.set(slot.getIndex(), stack), stack);
+ this.onEquipItem(slot, (ItemStack) this.handItems.set(slot.getIndex(), stack), stack, silent); // Paper - Fix silent equipment change
break;
case HUMANOID_ARMOR:
- this.onEquipItem(slot, (ItemStack) this.armorItems.set(slot.getIndex(), stack), stack);
+ this.onEquipItem(slot, (ItemStack) this.armorItems.set(slot.getIndex(), stack), stack, silent); // Paper - Fix silent equipment change
break;
case ANIMAL_ARMOR:
ItemStack itemstack1 = this.bodyArmorItem;
this.bodyArmorItem = stack;
- this.onEquipItem(slot, itemstack1, stack);
+ this.onEquipItem(slot, itemstack1, stack, silent); // Paper - Fix silent equipment change
}
}
diff --git a/src/main/java/net/minecraft/world/entity/monster/AbstractSkeleton.java b/src/main/java/net/minecraft/world/entity/monster/AbstractSkeleton.java
index 6627126ab02dbd5e9d1de6b186d75d850ef11280..3b5cf6ffb74d11bea5eb21bd66d679734ff5000c 100644
--- a/src/main/java/net/minecraft/world/entity/monster/AbstractSkeleton.java
+++ b/src/main/java/net/minecraft/world/entity/monster/AbstractSkeleton.java
@@ -254,8 +254,8 @@ public abstract class AbstractSkeleton extends Monster implements RangedAttackMo
// Paper end - shouldBurnInDay API
@Override
- public void setItemSlot(EquipmentSlot slot, ItemStack stack) {
- super.setItemSlot(slot, stack);
+ public void setItemSlot(EquipmentSlot slot, ItemStack stack, boolean silent) { // Paper - Fix silent equipment change
+ super.setItemSlot(slot, stack, silent); // Paper - Fix silent equipment change
if (!this.level().isClientSide) {
this.reassessWeaponGoal();
}
diff --git a/src/test/java/io/papermc/paper/entity/EntitySetItemSlotSilentOverrideTest.java b/src/test/java/io/papermc/paper/entity/EntitySetItemSlotSilentOverrideTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..81947843d1f2f7dc6f59d7b52f327d60b17d0dcc
--- /dev/null
+++ b/src/test/java/io/papermc/paper/entity/EntitySetItemSlotSilentOverrideTest.java
@@ -0,0 +1,51 @@
+package io.papermc.paper.entity;
+
+import io.github.classgraph.ClassGraph;
+import io.github.classgraph.ClassInfo;
+import io.github.classgraph.MethodInfo;
+import io.github.classgraph.MethodInfoList;
+import io.github.classgraph.MethodParameterInfo;
+import io.github.classgraph.ScanResult;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Stream;
+import org.bukkit.support.AbstractTestingBase;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import static org.junit.jupiter.api.Assertions.fail;
+
+public class EntitySetItemSlotSilentOverrideTest extends AbstractTestingBase {
+
+ public static Stream<ClassInfo> parameters() {
+ final List<ClassInfo> classInfo = new ArrayList<>();
+ try (ScanResult scanResult = new ClassGraph()
+ .enableClassInfo()
+ .enableMethodInfo()
+ .whitelistPackages("net.minecraft")
+ .scan()
+ ) {
+ for (final ClassInfo subclass : scanResult.getSubclasses("net.minecraft.world.entity.LivingEntity")) {
+ final MethodInfoList setItemSlot = subclass.getDeclaredMethodInfo("setItemSlot");
+ if (!setItemSlot.isEmpty()) {
+ classInfo.add(subclass);
+ }
+ }
+ }
+ return classInfo.stream();
+ }
+
+ @ParameterizedTest
+ @MethodSource("parameters")
+ public void checkSetItemSlotSilentOverrides(ClassInfo overridesSetItemSlot) {
+ final MethodInfoList setItemSlot = overridesSetItemSlot.getDeclaredMethodInfo("setItemSlot");
+ for (final MethodInfo methodInfo : setItemSlot) {
+ for (final MethodParameterInfo methodParameterInfo : methodInfo.getParameterInfo()) {
+ if ("boolean".equals(methodParameterInfo.getTypeDescriptor().toStringWithSimpleNames())) {
+ return;
+ }
+ }
+ }
+ fail(overridesSetItemSlot.getName() + " needs to override setItemSlot with the boolean silent parameter as well");
+ }
+}