From 776cc1199ab3237349b9089b337d4da4b1d6023f Mon Sep 17 00:00:00 2001 From: Jake Potrebic Date: Sat, 11 Nov 2023 15:23:02 -0800 Subject: [PATCH] Fix several issues with EntityBreedEvent (#8677) Upstream did not account for different hands when storing the breed item for later use in the event. Also they only stored a reference to the stack, not a copy so if the stack changed after love mode was started, the breed item in the event also changed. Also in several places, the breed item was stored after it was decreased by one to consume the item. --- ...several-issues-with-EntityBreedEvent.patch | 118 ++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 patches/server/Fix-several-issues-with-EntityBreedEvent.patch diff --git a/patches/server/Fix-several-issues-with-EntityBreedEvent.patch b/patches/server/Fix-several-issues-with-EntityBreedEvent.patch new file mode 100644 index 000000000..51966f9ee --- /dev/null +++ b/patches/server/Fix-several-issues-with-EntityBreedEvent.patch @@ -0,0 +1,118 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Jake Potrebic +Date: Thu, 15 Dec 2022 00:14:44 -0800 +Subject: [PATCH] Fix several issues with EntityBreedEvent + +Upstream did not account for different hands when storing +the breed item for later use in the event. Also they only +stored a reference to the stack, not a copy so if the stack +changed after love mode was started, the breed item in the event +also changed. Also in several places, the breed item was stored after +it was decreased by one to consume the item. + +diff --git a/src/main/java/net/minecraft/world/entity/animal/Animal.java b/src/main/java/net/minecraft/world/entity/animal/Animal.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/entity/animal/Animal.java ++++ b/src/main/java/net/minecraft/world/entity/animal/Animal.java +@@ -0,0 +0,0 @@ public abstract class Animal extends AgeableMob { + int i = this.getAge(); + + if (!this.level().isClientSide && i == 0 && this.canFallInLove()) { ++ final ItemStack breedCopy = itemstack.copy(); // Paper + this.usePlayerItem(player, hand, itemstack); +- this.setInLove(player); ++ this.setInLove(player, breedCopy); // Paper + return InteractionResult.SUCCESS; + } + +@@ -0,0 +0,0 @@ public abstract class Animal extends AgeableMob { + return this.inLove <= 0; + } + ++ @Deprecated @io.papermc.paper.annotation.DoNotUse // Paper + public void setInLove(@Nullable Player player) { ++ // Paper start - pass breed stack ++ this.setInLove(player, null); ++ } ++ public void setInLove(@Nullable Player player, @Nullable ItemStack breedItemCopy) { ++ if (breedItemCopy != null) this.breedItem = breedItemCopy; ++ // Paper end + // CraftBukkit start + EntityEnterLoveModeEvent entityEnterLoveModeEvent = CraftEventFactory.callEntityEnterLoveModeEvent(player, this, 600); + if (entityEnterLoveModeEvent.isCancelled()) { ++ this.breedItem = null; // Paper - clear if cancelled + return; + } + this.inLove = entityEnterLoveModeEvent.getTicksInLove(); +@@ -0,0 +0,0 @@ public abstract class Animal extends AgeableMob { + if (player != null) { + this.loveCause = player.getUUID(); + } +- this.breedItem = player.getInventory().getSelected(); // CraftBukkit ++ // Paper - set breed item in better place + + this.level().broadcastEntityEvent(this, (byte) 18); + } +diff --git a/src/main/java/net/minecraft/world/entity/animal/Panda.java b/src/main/java/net/minecraft/world/entity/animal/Panda.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/entity/animal/Panda.java ++++ b/src/main/java/net/minecraft/world/entity/animal/Panda.java +@@ -0,0 +0,0 @@ public class Panda extends Animal { + this.usePlayerItem(player, hand, itemstack); + this.ageUp((int) ((float) (-this.getAge() / 20) * 0.1F), true); + } else if (!this.level().isClientSide && this.getAge() == 0 && this.canFallInLove()) { ++ final ItemStack breedCopy = itemstack.copy(); // Paper + this.usePlayerItem(player, hand, itemstack); +- this.setInLove(player); ++ this.setInLove(player, breedCopy); // Paper + } else { + if (this.level().isClientSide || this.isSitting() || this.isInWater()) { + return InteractionResult.PASS; +diff --git a/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java b/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java ++++ b/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java +@@ -0,0 +0,0 @@ public class Camel extends AbstractHorse implements PlayerRideableJumping, Saddl + + boolean bl2 = this.isTamed() && this.getAge() == 0 && this.canFallInLove(); + if (bl2) { +- this.setInLove(player); ++ this.setInLove(player, item.copy()); // Paper + } + + boolean bl3 = this.isBaby(); +diff --git a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java ++++ b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java +@@ -0,0 +0,0 @@ public abstract class AbstractHorse extends Animal implements ContainerListener, + b0 = 5; + if (!this.level().isClientSide && this.isTamed() && this.getAge() == 0 && !this.isInLove()) { + flag = true; +- this.setInLove(player); ++ this.setInLove(player, item.copy()); // Paper + } + } else if (item.is(Items.GOLDEN_APPLE) || item.is(Items.ENCHANTED_GOLDEN_APPLE)) { + f = 10.0F; +@@ -0,0 +0,0 @@ public abstract class AbstractHorse extends Animal implements ContainerListener, + b0 = 10; + if (!this.level().isClientSide && this.isTamed() && this.getAge() == 0 && !this.isInLove()) { + flag = true; +- this.setInLove(player); ++ this.setInLove(player, item.copy()); // Paper + } + } + +diff --git a/src/main/java/net/minecraft/world/entity/animal/horse/Llama.java b/src/main/java/net/minecraft/world/entity/animal/horse/Llama.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/net/minecraft/world/entity/animal/horse/Llama.java ++++ b/src/main/java/net/minecraft/world/entity/animal/horse/Llama.java +@@ -0,0 +0,0 @@ public class Llama extends AbstractChestedHorse implements VariantHolder