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Paper/patches/server/0570-Fix-potions-splash-events.patch

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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 d7fe99e55b64b66af7795c2d0aeca69023f93bae..bf627d66310f201172d3cd3ea12f1d321cd3cd62 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/ThrownPotion.java
@@ -104,55 +104,76 @@ public class ThrownPotion extends ThrowableItemProjectile implements ItemSupplie
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();
+ showParticles = this.applyWater(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(potioncontents.getAllEffects(), hitResult.getType() == HitResult.Type.ENTITY ? ((EntityHitResult) hitResult).getEntity() : null, hitResult); // CraftBukkit - Pass MovingObjectPosition
+ showParticles = this.applySplash(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;
this.level().levelEvent(i, this.blockPosition(), potioncontents.getColor());
+ } // Paper - Fix potions splash events
this.discard(EntityRemoveEvent.Cause.HIT); // CraftBukkit - add Bukkit remove cause
}
}
- private void applyWater() {
+ 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(@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.hurt(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().hurt(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(Iterable<MobEffectInstance> iterable, @Nullable Entity entity, HitResult position) { // CraftBukkit - Pass MovingObjectPosition
+ private boolean applySplash(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 = this.level().getEntitiesOfClass(net.minecraft.world.entity.LivingEntity.class, axisalignedbb);
Map<LivingEntity, Double> affected = new HashMap<LivingEntity, Double>(); // CraftBukkit
@@ -170,6 +191,7 @@ public class ThrownPotion extends ThrowableItemProjectile implements ItemSupplie
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 {
@@ -225,10 +247,11 @@ public class ThrownPotion extends ThrowableItemProjectile implements ItemSupplie
}
}
}
+ 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();
@@ -241,14 +264,16 @@ public class ThrownPotion extends ThrowableItemProjectile implements ItemSupplie
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 ea9a12ff01203072975bb2f22a077d1d2e46376f..11f9220c4a5d2481f3a52238b4d845bad1fd0867 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -875,6 +875,32 @@ 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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