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Paper/patches/server/0549-Fix-potions-splash-events.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation 
Firstly, the old methods all routed to the CompletableFuture method.
However, the CF method could not guarantee that if the caller
was off-main that the future would be "completed" on-main. Since
the callback methods used the CF one, this meant that the callback
methods did not guarantee that the callbacks were to be called on
the main thread.

Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb)
so that the methods with the callback are guaranteed to invoke
the callback on the main thread. The CF behavior remains unchanged;
it may still appear to complete on main if invoked off-main.

Secondly, remove the scheduleOnMain invocation in the async
chunk completion. This unnecessarily delays the callback
by 1 tick.

Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which
will load chunks within an area. This method is provided as a helper
as keeping all chunks loaded within an area can be complicated to
implement for plugins (due to the lacking ticket API), and is
already implemented internally anyways.

Fourthly, remove the ticket addition that occured with getChunkAt
and getChunkAtAsync. The ticket addition may delay the unloading
of the chunk unnecessarily. It also fixes a very rare timing bug
where the future/callback would be completed after the chunk
unloads.
2024-11-18 23:00:59 -08:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 20 May 2021 20:40:53 -0700
Subject: [PATCH] Fix potions splash events
Fix PotionSplashEvent for water splash potions
Fixes SPIGOT-6221: https://hub.spigotmc.org/jira/projects/SPIGOT/issues/SPIGOT-6221
Fix splash events cancellation that still show particles/sound
diff --git a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
index 224e768963d6969f25608065d37ad72d82acda68..d6ac07d9d5ee0430a1d91b7084b378aac1d047e5 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
@@ -109,55 +109,76 @@ public class ThrownPotion extends ThrowableItemProjectile {
ItemStack itemstack = this.getItem();
PotionContents potioncontents = (PotionContents) itemstack.getOrDefault(DataComponents.POTION_CONTENTS, PotionContents.EMPTY);
+ boolean showParticles = true; // Paper - Fix potions splash events
if (potioncontents.is(Potions.WATER)) {
- this.applyWater(worldserver);
+ showParticles = this.applyWater(worldserver, hitResult); // Paper - Fix potions splash events
} else if (true || potioncontents.hasEffects()) { // CraftBukkit - Call event even if no effects to apply
if (this.isLingering()) {
- this.makeAreaOfEffectCloud(potioncontents, hitResult); // CraftBukkit - Pass MovingObjectPosition
+ showParticles = this.makeAreaOfEffectCloud(potioncontents, hitResult); // CraftBukkit - Pass MovingObjectPosition // Paper
} else {
- this.applySplash(worldserver, potioncontents.getAllEffects(), hitResult.getType() == HitResult.Type.ENTITY ? ((EntityHitResult) hitResult).getEntity() : null, hitResult); // CraftBukkit - Pass MovingObjectPosition
+ showParticles = this.applySplash(worldserver, potioncontents.getAllEffects(), hitResult.getType() == HitResult.Type.ENTITY ? ((EntityHitResult) hitResult).getEntity() : null, hitResult); // CraftBukkit - Pass MovingObjectPosition // Paper
}
}
+ if (showParticles) { // Paper - Fix potions splash events
int i = potioncontents.potion().isPresent() && ((Potion) ((Holder) potioncontents.potion().get()).value()).hasInstantEffects() ? 2007 : 2002;
worldserver.levelEvent(i, this.blockPosition(), potioncontents.getColor());
+ } // Paper - Fix potions splash events
this.discard(EntityRemoveEvent.Cause.HIT); // CraftBukkit - add Bukkit remove cause
}
}
- private void applyWater(ServerLevel world) {
+ private static final Predicate<net.minecraft.world.entity.LivingEntity> APPLY_WATER_GET_ENTITIES_PREDICATE = ThrownPotion.WATER_SENSITIVE_OR_ON_FIRE.or(Axolotl.class::isInstance); // Paper - Fix potions splash events
+ private boolean applyWater(ServerLevel world, @Nullable HitResult hitResult) { // Paper - Fix potions splash events
AABB axisalignedbb = this.getBoundingBox().inflate(4.0D, 2.0D, 4.0D);
- List<net.minecraft.world.entity.LivingEntity> list = this.level().getEntitiesOfClass(net.minecraft.world.entity.LivingEntity.class, axisalignedbb, ThrownPotion.WATER_SENSITIVE_OR_ON_FIRE);
+ // Paper start - Fix potions splash events
+ List<net.minecraft.world.entity.LivingEntity> list = this.level().getEntitiesOfClass(net.minecraft.world.entity.LivingEntity.class, axisalignedbb, ThrownPotion.APPLY_WATER_GET_ENTITIES_PREDICATE);
+ Map<LivingEntity, Double> affected = new HashMap<>();
+ java.util.Set<LivingEntity> rehydrate = new java.util.HashSet<>();
+ java.util.Set<LivingEntity> extinguish = new java.util.HashSet<>();
Iterator iterator = list.iterator();
while (iterator.hasNext()) {
net.minecraft.world.entity.LivingEntity entityliving = (net.minecraft.world.entity.LivingEntity) iterator.next();
+ if (entityliving instanceof Axolotl axolotl) {
+ rehydrate.add(((org.bukkit.entity.Axolotl) axolotl.getBukkitEntity()));
+ }
double d0 = this.distanceToSqr((Entity) entityliving);
if (d0 < 16.0D) {
if (entityliving.isSensitiveToWater()) {
- entityliving.hurtServer(world, this.damageSources().indirectMagic(this, this.getOwner()), 1.0F);
+ affected.put(entityliving.getBukkitLivingEntity(), 1.0);
}
if (entityliving.isOnFire() && entityliving.isAlive()) {
- entityliving.extinguishFire();
+ extinguish.add(entityliving.getBukkitLivingEntity());
}
}
}
- List<Axolotl> list1 = this.level().getEntitiesOfClass(Axolotl.class, axisalignedbb);
- Iterator iterator1 = list1.iterator();
-
- while (iterator1.hasNext()) {
- Axolotl axolotl = (Axolotl) iterator1.next();
-
- axolotl.rehydrate();
+ io.papermc.paper.event.entity.WaterBottleSplashEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callWaterBottleSplashEvent(
+ this, hitResult, affected, rehydrate, extinguish
+ );
+ if (!event.isCancelled()) {
+ for (LivingEntity affectedEntity : event.getToDamage()) {
+ ((CraftLivingEntity) affectedEntity).getHandle().hurtServer(world, this.damageSources().indirectMagic(this, this.getOwner()), 1.0F);
+ }
+ for (LivingEntity toExtinguish : event.getToExtinguish()) {
+ ((CraftLivingEntity) toExtinguish).getHandle().extinguishFire();
+ }
+ for (LivingEntity toRehydrate : event.getToRehydrate()) {
+ if (((CraftLivingEntity) toRehydrate).getHandle() instanceof Axolotl axolotl) {
+ axolotl.rehydrate();
+ }
+ }
+ // Paper end - Fix potions splash events
}
+ return !event.isCancelled(); // Paper - Fix potions splash events
}
- private void applySplash(ServerLevel worldserver, Iterable<MobEffectInstance> iterable, @Nullable Entity entity, HitResult position) { // CraftBukkit - Pass MovingObjectPosition
+ private boolean applySplash(ServerLevel worldserver, Iterable<MobEffectInstance> iterable, @Nullable Entity entity, HitResult position) { // CraftBukkit - Pass MovingObjectPosition // Paper - Fix potions splash events
AABB axisalignedbb = this.getBoundingBox().inflate(4.0D, 2.0D, 4.0D);
List<net.minecraft.world.entity.LivingEntity> list = worldserver.getEntitiesOfClass(net.minecraft.world.entity.LivingEntity.class, axisalignedbb);
Map<LivingEntity, Double> affected = new HashMap<LivingEntity, Double>(); // CraftBukkit
@@ -175,6 +196,7 @@ public class ThrownPotion extends ThrowableItemProjectile {
if (d0 < 16.0D) {
double d1;
+ // Paper - diff on change, used when calling the splash event for water splash potions
if (entityliving == entity) {
d1 = 1.0D;
} else {
@@ -230,10 +252,11 @@ public class ThrownPotion extends ThrowableItemProjectile {
}
}
}
+ return !event.isCancelled(); // Paper - Fix potions splash events
}
- private void makeAreaOfEffectCloud(PotionContents potioncontents, HitResult position) { // CraftBukkit - Pass MovingObjectPosition
+ private boolean makeAreaOfEffectCloud(PotionContents potioncontents, HitResult position) { // CraftBukkit - Pass MovingObjectPosition
AreaEffectCloud entityareaeffectcloud = new AreaEffectCloud(this.level(), this.getX(), this.getY(), this.getZ());
Entity entity = this.getOwner();
@@ -246,14 +269,16 @@ public class ThrownPotion extends ThrowableItemProjectile {
entityareaeffectcloud.setWaitTime(10);
entityareaeffectcloud.setRadiusPerTick(-entityareaeffectcloud.getRadius() / (float) entityareaeffectcloud.getDuration());
entityareaeffectcloud.setPotionContents(potioncontents);
+ boolean noEffects = potioncontents.hasEffects(); // Paper - Fix potions splash events
// CraftBukkit start
org.bukkit.event.entity.LingeringPotionSplashEvent event = org.bukkit.craftbukkit.event.CraftEventFactory.callLingeringPotionSplashEvent(this, position, entityareaeffectcloud);
- if (!(event.isCancelled() || entityareaeffectcloud.isRemoved())) {
+ if (!(event.isCancelled() || entityareaeffectcloud.isRemoved() || (noEffects && !entityareaeffectcloud.potionContents.hasEffects()))) { // Paper - don't spawn area effect cloud if the effects were empty and not changed during the event handling
this.level().addFreshEntity(entityareaeffectcloud);
} else {
entityareaeffectcloud.discard(null); // CraftBukkit - add Bukkit remove cause
}
// CraftBukkit end
+ return !event.isCancelled(); // Paper - Fix potions splash events
}
public boolean isLingering() {
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 49efae40345fcfca8f80fcc541dcfde1b8a8b07b..24f86724012bb8bcd6d24683a1c78ce66b42ca30 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -884,6 +884,32 @@ public class CraftEventFactory {
return event;
}
+ // Paper start - Fix potions splash events
+ public static io.papermc.paper.event.entity.WaterBottleSplashEvent callWaterBottleSplashEvent(net.minecraft.world.entity.projectile.ThrownPotion potion, @Nullable HitResult hitResult, Map<LivingEntity, Double> affectedEntities, java.util.Set<LivingEntity> rehydrate, java.util.Set<LivingEntity> extinguish) {
+ ThrownPotion thrownPotion = (ThrownPotion) potion.getBukkitEntity();
+
+ Block hitBlock = null;
+ BlockFace hitFace = null;
+ org.bukkit.entity.Entity hitEntity = null;
+
+ if (hitResult != null) {
+ if (hitResult.getType() == HitResult.Type.BLOCK) {
+ BlockHitResult blockHitResult = (BlockHitResult) hitResult;
+ hitBlock = CraftBlock.at(potion.level(), blockHitResult.getBlockPos());
+ hitFace = CraftBlock.notchToBlockFace(blockHitResult.getDirection());
+ } else if (hitResult.getType() == HitResult.Type.ENTITY) {
+ hitEntity = ((EntityHitResult) hitResult).getEntity().getBukkitEntity();
+ }
+ }
+
+ io.papermc.paper.event.entity.WaterBottleSplashEvent event = new io.papermc.paper.event.entity.WaterBottleSplashEvent(
+ thrownPotion, hitEntity, hitBlock, hitFace, affectedEntities, rehydrate, extinguish
+ );
+ event.callEvent();
+ return event;
+ }
+ // Paper end - Fix potions splash events
+
/**
* BlockFadeEvent
*/
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