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 3bd13c9b8c7573726ae7defdc3c0f32876d1cf1f..5193cf1d3c922d750a11e492b7636215e23ad0d6 100644 --- a/src/main/java/net/minecraft/world/entity/animal/Animal.java +++ b/src/main/java/net/minecraft/world/entity/animal/Animal.java @@ -147,8 +147,9 @@ public abstract class Animal extends AgeableMob { int i = this.getAge(); if (!this.level().isClientSide && i == 0 && this.canFallInLove()) { + final ItemStack breedCopy = itemstack.copy(); // Paper - Fix EntityBreedEvent copying this.usePlayerItem(player, hand, itemstack); - this.setInLove(player); + this.setInLove(player, breedCopy); // Paper - Fix EntityBreedEvent copying return InteractionResult.SUCCESS; } @@ -174,10 +175,18 @@ public abstract class Animal extends AgeableMob { return this.inLove <= 0; } + @Deprecated @io.papermc.paper.annotation.DoNotUse // Paper - Fix EntityBreedEvent copying public void setInLove(@Nullable Player player) { + // Paper start - Fix EntityBreedEvent copying + this.setInLove(player, null); + } + public void setInLove(@Nullable Player player, @Nullable ItemStack breedItemCopy) { + if (breedItemCopy != null) this.breedItem = breedItemCopy; + // Paper end - Fix EntityBreedEvent copying // CraftBukkit start EntityEnterLoveModeEvent entityEnterLoveModeEvent = CraftEventFactory.callEntityEnterLoveModeEvent(player, this, 600); if (entityEnterLoveModeEvent.isCancelled()) { + this.breedItem = null; // Paper - Fix EntityBreedEvent copying; clear if cancelled return; } this.inLove = entityEnterLoveModeEvent.getTicksInLove(); @@ -185,7 +194,7 @@ public abstract class Animal extends AgeableMob { if (player != null) { this.loveCause = player.getUUID(); } - this.breedItem = player.getInventory().getSelected(); // CraftBukkit + // Paper - Fix EntityBreedEvent copying; 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 0440fd2d1bb3f87641ad88de6d5ae64617536a6d..db60b91c2b26ca8cdb66e05deab7742ffe212767 100644 --- a/src/main/java/net/minecraft/world/entity/animal/Panda.java +++ b/src/main/java/net/minecraft/world/entity/animal/Panda.java @@ -668,8 +668,9 @@ 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 - Fix EntityBreedEvent copying this.usePlayerItem(player, hand, itemstack); - this.setInLove(player); + this.setInLove(player, breedCopy); // Paper - Fix EntityBreedEvent copying } 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 33531cbdd9b2a5607092d2364ce5655a63c2361c..9229948c90e278cbdacd0f82689144c8dc50956f 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 @@ -389,7 +389,7 @@ public class Camel extends AbstractHorse implements PlayerRideableJumping, Saddl boolean flag1 = this.isTamed() && this.getAge() == 0 && this.canFallInLove(); if (flag1) { - this.setInLove(player); + this.setInLove(player, item.copy()); // Paper - Fix EntityBreedEvent copying } boolean flag2 = 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 8cae4e154ca07493aba9acadd4ff7150d7ae4f67..9357cf0179d19fbdfe76413e909a99b924c85780 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 @@ -571,7 +571,7 @@ 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 - Fix EntityBreedEvent copying } } else if (item.is(Items.GOLDEN_APPLE) || item.is(Items.ENCHANTED_GOLDEN_APPLE)) { f = 10.0F; @@ -579,7 +579,7 @@ 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 - Fix EntityBreedEvent copying } } 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 d4eceb535561e11f5f7ab891e81aac285f3cd828..1dd4290287725898ace29e46b439b55df8fdd1af 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 @@ -183,7 +183,7 @@ public class Llama extends AbstractChestedHorse implements VariantHolder