From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Jake Potrebic Date: Tue, 18 May 2021 12:32:02 -0700 Subject: [PATCH] Add drops to shear events diff --git a/src/main/java/net/minecraft/core/dispenser/ShearsDispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/ShearsDispenseItemBehavior.java index f32f8d5cb22feb885a53d3b56c04ad4219d2bafa..44b79a7c2f8b95a484d1999fa2167ce588f7985b 100644 --- a/src/main/java/net/minecraft/core/dispenser/ShearsDispenseItemBehavior.java +++ b/src/main/java/net/minecraft/core/dispenser/ShearsDispenseItemBehavior.java @@ -103,11 +103,14 @@ public class ShearsDispenseItemBehavior extends OptionalDispenseItemBehavior { if (entityliving instanceof Shearable ishearable) { if (ishearable.readyForShearing()) { // CraftBukkit start - if (CraftEventFactory.callBlockShearEntityEvent(entityliving, bukkitBlock, craftItem).isCancelled()) { + // Paper start - Add drops to shear events + org.bukkit.event.block.BlockShearEntityEvent event = CraftEventFactory.callBlockShearEntityEvent(entityliving, bukkitBlock, craftItem, ishearable.generateDefaultDrops()); + if (event.isCancelled()) { + // Paper end - Add drops to shear events continue; } // CraftBukkit end - ishearable.shear(SoundSource.BLOCKS); + ishearable.shear(SoundSource.BLOCKS, CraftItemStack.asNMSCopy(event.getDrops())); // Paper - Add drops to shear events worldserver.gameEvent((Entity) null, (Holder) GameEvent.SHEAR, blockposition); return true; } diff --git a/src/main/java/net/minecraft/world/entity/Shearable.java b/src/main/java/net/minecraft/world/entity/Shearable.java index 5e8cc5cfac8888628c6d513148f41be09ca65a2c..2ee48ac3b665db2b02bcb1a30ec972d43a3725b0 100644 --- a/src/main/java/net/minecraft/world/entity/Shearable.java +++ b/src/main/java/net/minecraft/world/entity/Shearable.java @@ -3,7 +3,13 @@ package net.minecraft.world.entity; import net.minecraft.sounds.SoundSource; public interface Shearable { + default void shear(SoundSource soundCategory, java.util.List drops) { this.shear(soundCategory); } // Paper - Add drops to shear events void shear(SoundSource shearedSoundCategory); boolean readyForShearing(); + // Paper start - custom shear drops; ensure all implementing entities override this + default java.util.List generateDefaultDrops() { + return java.util.Collections.emptyList(); + } + // Paper end - custom shear drops } diff --git a/src/main/java/net/minecraft/world/entity/animal/MushroomCow.java b/src/main/java/net/minecraft/world/entity/animal/MushroomCow.java index aa125e3043b120935aaa015803f065f99eb8d050..0c21959f57ae88fcd0a4d6dc911c1ce347c96528 100644 --- a/src/main/java/net/minecraft/world/entity/animal/MushroomCow.java +++ b/src/main/java/net/minecraft/world/entity/animal/MushroomCow.java @@ -123,11 +123,18 @@ public class MushroomCow extends Cow implements Shearable, VariantHolder drops = this.generateDefaultDrops(); + org.bukkit.event.player.PlayerShearEntityEvent event = CraftEventFactory.handlePlayerShearEntityEvent(player, this, itemstack, hand, drops); + if (event != null) { + if (event.isCancelled()) { + return InteractionResult.PASS; + } + drops = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(event.getDrops()); } + // Paper end - custom shear drops // CraftBukkit end - this.shear(SoundSource.PLAYERS); + this.shear(SoundSource.PLAYERS, drops); // Paper - custom shear drops this.gameEvent(GameEvent.SHEAR, player); if (!this.level().isClientSide) { itemstack.hurtAndBreak(1, player, getSlotForHand(hand)); @@ -164,6 +171,22 @@ public class MushroomCow extends Cow implements Shearable, VariantHolder generateDefaultDrops() { + java.util.List dropEntities = new java.util.ArrayList<>(5); + for (int i = 0; i < 5; ++i) { + dropEntities.add(new ItemStack(this.getVariant().getBlockState().getBlock())); + } + return dropEntities; + } + + @Override + public void shear(SoundSource shearedSoundCategory, java.util.List drops) { // If drops is null, need to generate drops + // Paper end - custom shear drops this.level().playSound((Player) null, (Entity) this, SoundEvents.MOOSHROOM_SHEAR, shearedSoundCategory, 1.0F, 1.0F); if (!this.level().isClientSide()) { Cow entitycow = (Cow) EntityType.COW.create(this.level()); @@ -193,17 +216,12 @@ public class MushroomCow extends Cow implements Shearable, VariantHolder drops = this.generateDefaultDrops(); + org.bukkit.event.player.PlayerShearEntityEvent event = CraftEventFactory.handlePlayerShearEntityEvent(player, this, itemstack, hand, drops); + if (event != null) { + if (event.isCancelled()) { + return InteractionResult.PASS; + } + drops = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(event.getDrops()); } + // Paper end - custom shear drops // CraftBukkit end - this.shear(SoundSource.PLAYERS); + this.shear(SoundSource.PLAYERS, drops); // Paper this.gameEvent(GameEvent.SHEAR, player); itemstack.hurtAndBreak(1, player, getSlotForHand(hand)); return InteractionResult.SUCCESS; @@ -274,13 +281,30 @@ public class Sheep extends Animal implements Shearable { @Override public void shear(SoundSource shearedSoundCategory) { + // Paper start - custom shear drops + this.shear(shearedSoundCategory, this.generateDefaultDrops()); + } + + @Override + public java.util.List generateDefaultDrops() { + int count = 1 + this.random.nextInt(3); + java.util.List dropEntities = new java.util.ArrayList<>(count); + for (int j = 0; j < count; ++j) { + dropEntities.add(new ItemStack(Sheep.ITEM_BY_DYE.get(this.getColor()))); + } + return dropEntities; + } + + @Override + public void shear(SoundSource shearedSoundCategory, java.util.List drops) { + // Paper end - custom shear drops this.level().playSound((Player) null, (Entity) this, SoundEvents.SHEEP_SHEAR, shearedSoundCategory, 1.0F, 1.0F); this.setSheared(true); int i = 1 + this.random.nextInt(3); - for (int j = 0; j < i; ++j) { + for (final ItemStack drop : drops) { // Paper - custom shear drops (moved drop generation to separate method) this.forceDrops = true; // CraftBukkit - ItemEntity entityitem = this.spawnAtLocation((ItemLike) Sheep.ITEM_BY_DYE.get(this.getColor()), 1); + ItemEntity entityitem = this.spawnAtLocation(drop, 1); // Paper - custom shear drops this.forceDrops = false; // CraftBukkit if (entityitem != null) { diff --git a/src/main/java/net/minecraft/world/entity/animal/SnowGolem.java b/src/main/java/net/minecraft/world/entity/animal/SnowGolem.java index 2de1a2f666da9db1832907e1651dbff948e37252..5c2ed3c39c8eb850f3be1e2ea5b5a7ea266e16d1 100644 --- a/src/main/java/net/minecraft/world/entity/animal/SnowGolem.java +++ b/src/main/java/net/minecraft/world/entity/animal/SnowGolem.java @@ -146,11 +146,18 @@ public class SnowGolem extends AbstractGolem implements Shearable, RangedAttackM if (itemstack.is(Items.SHEARS) && this.readyForShearing()) { // CraftBukkit start - if (!CraftEventFactory.handlePlayerShearEntityEvent(player, this, itemstack, hand)) { - return InteractionResult.PASS; + // Paper start - custom shear drops + java.util.List drops = this.generateDefaultDrops(); + org.bukkit.event.player.PlayerShearEntityEvent event = CraftEventFactory.handlePlayerShearEntityEvent(player, this, itemstack, hand, drops); + if (event != null) { + if (event.isCancelled()) { + return InteractionResult.PASS; + } + drops = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(event.getDrops()); } + // Paper end - custom shear drops // CraftBukkit end - this.shear(SoundSource.PLAYERS); + this.shear(SoundSource.PLAYERS, drops); // Paper this.gameEvent(GameEvent.SHEAR, player); if (!this.level().isClientSide) { itemstack.hurtAndBreak(1, player, getSlotForHand(hand)); @@ -164,12 +171,28 @@ public class SnowGolem extends AbstractGolem implements Shearable, RangedAttackM @Override public void shear(SoundSource shearedSoundCategory) { + // Paper start - custom shear drops + this.shear(shearedSoundCategory, this.generateDefaultDrops()); + } + + @Override + public java.util.List generateDefaultDrops() { + return java.util.Collections.singletonList(new ItemStack(Items.CARVED_PUMPKIN)); + } + + @Override + public void shear(SoundSource shearedSoundCategory, java.util.List drops) { + // Paper end - custom shear drops this.level().playSound((Player) null, (Entity) this, SoundEvents.SNOW_GOLEM_SHEAR, shearedSoundCategory, 1.0F, 1.0F); if (!this.level().isClientSide()) { this.setPumpkin(false); - this.forceDrops = true; // CraftBukkit - this.spawnAtLocation(new ItemStack(Items.CARVED_PUMPKIN), this.getEyeHeight()); - this.forceDrops = false; // CraftBukkit + // Paper start - custom shear drops (moved drop generation to separate method) + for (final ItemStack drop : drops) { + this.forceDrops = true; + this.spawnAtLocation(drop, this.getEyeHeight()); + this.forceDrops = false; + } + // Paper end - custom shear drops } } diff --git a/src/main/java/net/minecraft/world/entity/monster/Bogged.java b/src/main/java/net/minecraft/world/entity/monster/Bogged.java index 8420d75865b86e1d8afea2527b5521cac184e8b1..6e290d67b00c88ecd2cf2ce5f612f52ebda9e280 100644 --- a/src/main/java/net/minecraft/world/entity/monster/Bogged.java +++ b/src/main/java/net/minecraft/world/entity/monster/Bogged.java @@ -135,6 +135,15 @@ public class Bogged extends AbstractSkeleton implements Shearable { } private void spawnShearedMushrooms() { + // Paper start - shear drops API + this.generateShearedMushrooms(stack -> { + this.forceDrops = true; + this.spawnAtLocation(stack, this.getBbHeight()); + this.forceDrops = false; + }); + } + private void generateShearedMushrooms(java.util.function.Consumer stackConsumer) { + // Paper end - shear drops API if (this.level() instanceof ServerLevel serverLevel) { LootTable lootTable = serverLevel.getServer().reloadableRegistries().getLootTable(BuiltInLootTables.BOGGED_SHEAR); LootParams lootParams = new LootParams.Builder(serverLevel) @@ -143,11 +152,20 @@ public class Bogged extends AbstractSkeleton implements Shearable { .create(LootContextParamSets.SHEARING); for (ItemStack itemStack : lootTable.getRandomItems(lootParams)) { - this.spawnAtLocation(itemStack, this.getBbHeight()); + stackConsumer.accept(itemStack); // Paper } } } + // Paper start - shear drops API + @Override + public java.util.List generateDefaultDrops() { + final java.util.List drops = new java.util.ArrayList<>(); + this.generateShearedMushrooms(drops::add); + return drops; + } + // Paper end - shear drops API + @Override public boolean readyForShearing() { return !this.isSheared() && this.isAlive(); diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java index bec1f62559b42acee6c955baf7851aecb9179e16..1af662ca881d656b17697fce837f659349241234 100644 --- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java +++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java @@ -1669,20 +1669,20 @@ public class CraftEventFactory { player.level().getCraftServer().getPluginManager().callEvent(event); } - public static BlockShearEntityEvent callBlockShearEntityEvent(Entity animal, org.bukkit.block.Block dispenser, CraftItemStack is) { - BlockShearEntityEvent bse = new BlockShearEntityEvent(dispenser, animal.getBukkitEntity(), is); + public static BlockShearEntityEvent callBlockShearEntityEvent(Entity animal, org.bukkit.block.Block dispenser, CraftItemStack is, List drops) { // Paper - custom shear drops + BlockShearEntityEvent bse = new BlockShearEntityEvent(dispenser, animal.getBukkitEntity(), is, Lists.transform(drops, CraftItemStack::asCraftMirror)); // Paper - custom shear drops Bukkit.getPluginManager().callEvent(bse); return bse; } - public static boolean handlePlayerShearEntityEvent(net.minecraft.world.entity.player.Player player, Entity sheared, ItemStack shears, InteractionHand hand) { + public static PlayerShearEntityEvent handlePlayerShearEntityEvent(net.minecraft.world.entity.player.Player player, Entity sheared, ItemStack shears, InteractionHand hand, List drops) { // Paper - custom shear drops if (!(player instanceof ServerPlayer)) { - return true; + return null; // Paper - custom shear drops } - PlayerShearEntityEvent event = new PlayerShearEntityEvent((Player) player.getBukkitEntity(), sheared.getBukkitEntity(), CraftItemStack.asCraftMirror(shears), (hand == InteractionHand.OFF_HAND ? EquipmentSlot.OFF_HAND : EquipmentSlot.HAND)); + PlayerShearEntityEvent event = new PlayerShearEntityEvent((Player) player.getBukkitEntity(), sheared.getBukkitEntity(), CraftItemStack.asCraftMirror(shears), (hand == InteractionHand.OFF_HAND ? EquipmentSlot.OFF_HAND : EquipmentSlot.HAND), Lists.transform(drops, CraftItemStack::asCraftMirror)); // Paper - custom shear drops Bukkit.getPluginManager().callEvent(event); - return !event.isCancelled(); + return event; // Paper - custom shear drops } public static Cancellable handleStatisticsIncrease(net.minecraft.world.entity.player.Player entityHuman, net.minecraft.stats.Stat statistic, int current, int newValue) { diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java index 41c0cfc88f2ec48c1bb8ac10a78f89bf1f2f2319..62b5ba0cafd3a09229648b1205679148b476edcc 100644 --- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java +++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java @@ -68,6 +68,16 @@ public final class CraftItemStack extends ItemStack { return stack; } + // Paper start + public static java.util.List asNMSCopy(java.util.List originals) { + final java.util.List items = new java.util.ArrayList<>(originals.size()); + for (final ItemStack original : originals) { + items.add(asNMSCopy(original)); + } + return items; + } + // Paper end + public static net.minecraft.world.item.ItemStack copyNMSStack(net.minecraft.world.item.ItemStack original, int amount) { net.minecraft.world.item.ItemStack stack = original.copy(); stack.setCount(amount); diff --git a/src/test/java/io/papermc/paper/entity/ShearableDropsTest.java b/src/test/java/io/papermc/paper/entity/ShearableDropsTest.java new file mode 100644 index 0000000000000000000000000000000000000000..e612515f7709dbe5d1fa5751337cdc34fce10a98 --- /dev/null +++ b/src/test/java/io/papermc/paper/entity/ShearableDropsTest.java @@ -0,0 +1,34 @@ +package io.papermc.paper.entity; + +import io.github.classgraph.ClassGraph; +import io.github.classgraph.ClassInfo; +import io.github.classgraph.MethodInfoList; +import io.github.classgraph.ScanResult; +import java.util.ArrayList; +import net.minecraft.world.entity.Shearable; +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.assertEquals; + +class ShearableDropsTest extends AbstractTestingBase { + + static Iterable parameters() { + try (ScanResult scanResult = new ClassGraph() + .enableClassInfo() + .enableMethodInfo() + .whitelistPackages("net.minecraft") + .scan() + ) { + return new ArrayList<>(scanResult.getClassesImplementing(Shearable.class.getName())); + } + } + + @ParameterizedTest + @MethodSource("parameters") + void checkShearableDropOverrides(final ClassInfo classInfo) { + final MethodInfoList generateDefaultDrops = classInfo.getDeclaredMethodInfo("generateDefaultDrops"); + assertEquals(1, generateDefaultDrops.size(), classInfo.getName() + " doesn't implement Shearable#generateDefaultDrops"); + } +}