From 637b466c2dee3444b97dce88f0c23c38255af9ec Mon Sep 17 00:00:00 2001 From: Jake Potrebic Date: Tue, 19 Oct 2021 18:55:05 -0700 Subject: [PATCH] Get entity default attributes (#6449) --- build-data/paper.at | 3 + .../api/Get-entity-default-attributes.patch | 62 +++++++ .../Get-entity-default-attributes.patch | 159 ++++++++++++++++++ 3 files changed, 224 insertions(+) create mode 100644 patches/api/Get-entity-default-attributes.patch create mode 100644 patches/server/Get-entity-default-attributes.patch diff --git a/build-data/paper.at b/build-data/paper.at index 010eb1e9dd..d1527bdbd2 100644 --- a/build-data/paper.at +++ b/build-data/paper.at @@ -247,3 +247,6 @@ public net.minecraft.server.level.ServerLevel findLightningRod(Lnet/minecraft/co # Improve CraftBlockStates public net.minecraft.world.level.block.entity.BlockEntityType validBlocks + +# Default entity attributes +public net.minecraft.world.entity.ai.attributes.AttributeSupplier instances diff --git a/patches/api/Get-entity-default-attributes.patch b/patches/api/Get-entity-default-attributes.patch new file mode 100644 index 0000000000..a3875ab580 --- /dev/null +++ b/patches/api/Get-entity-default-attributes.patch @@ -0,0 +1,62 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Jake Potrebic +Date: Fri, 20 Aug 2021 13:03:55 -0700 +Subject: [PATCH] Get entity default attributes + + +diff --git a/src/main/java/org/bukkit/UnsafeValues.java b/src/main/java/org/bukkit/UnsafeValues.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/org/bukkit/UnsafeValues.java ++++ b/src/main/java/org/bukkit/UnsafeValues.java +@@ -0,0 +0,0 @@ public interface UnsafeValues { + * @return the server's protocol version + */ + int getProtocolVersion(); ++ ++ /** ++ * Checks if the entity represented by the namespaced key has default attributes. ++ * ++ * @param entityKey the entity's key ++ * @return true if it has default attributes ++ */ ++ boolean hasDefaultEntityAttributes(@org.jetbrains.annotations.NotNull NamespacedKey entityKey); ++ ++ /** ++ * Gets the default attributes for the entity represented by the namespaced key. ++ * ++ * @param entityKey the entity's key ++ * @return an unmodifiable instance of Attributable for reading default attributes. ++ * @throws IllegalArgumentException if the entity does not exist of have default attributes (use {@link #hasDefaultEntityAttributes(NamespacedKey)} first) ++ */ ++ @org.jetbrains.annotations.NotNull org.bukkit.attribute.Attributable getDefaultEntityAttributes(@org.jetbrains.annotations.NotNull NamespacedKey entityKey); + // Paper end + } +diff --git a/src/main/java/org/bukkit/entity/EntityType.java b/src/main/java/org/bukkit/entity/EntityType.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/org/bukkit/entity/EntityType.java ++++ b/src/main/java/org/bukkit/entity/EntityType.java +@@ -0,0 +0,0 @@ public enum EntityType implements Keyed, net.kyori.adventure.translation.Transla + Preconditions.checkArgument(this != UNKNOWN, "UNKNOWN entities do not have translation keys"); + return org.bukkit.Bukkit.getUnsafe().getTranslationKey(this); + } ++ ++ /** ++ * Checks if the entity has default attributes. ++ * ++ * @return true if it has default attributes ++ */ ++ public boolean hasDefaultAttributes() { ++ return org.bukkit.Bukkit.getUnsafe().hasDefaultEntityAttributes(this.key); ++ } ++ ++ /** ++ * Gets the default attributes for the entity. ++ * ++ * @return an unmodifiable instance of Attributable for reading default attributes. ++ * @throws IllegalArgumentException if the entity does not exist of have default attributes (use {@link #hasDefaultAttributes()} first) ++ */ ++ public @NotNull org.bukkit.attribute.Attributable getDefaultAttributes() { ++ return org.bukkit.Bukkit.getUnsafe().getDefaultEntityAttributes(this.key); ++ } + // Paper end + } diff --git a/patches/server/Get-entity-default-attributes.patch b/patches/server/Get-entity-default-attributes.patch new file mode 100644 index 0000000000..eaee5e0211 --- /dev/null +++ b/patches/server/Get-entity-default-attributes.patch @@ -0,0 +1,159 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Jake Potrebic +Date: Fri, 20 Aug 2021 13:03:21 -0700 +Subject: [PATCH] Get entity default attributes + + +diff --git a/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java b/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java +new file mode 100644 +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 +--- /dev/null ++++ b/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java +@@ -0,0 +0,0 @@ ++package io.papermc.paper.attribute; ++ ++import net.minecraft.world.entity.ai.attributes.AttributeInstance; ++import org.bukkit.attribute.Attribute; ++import org.bukkit.attribute.AttributeModifier; ++import org.bukkit.craftbukkit.attribute.CraftAttributeInstance; ++ ++import java.util.Collection; ++ ++public class UnmodifiableAttributeInstance extends CraftAttributeInstance { ++ ++ public UnmodifiableAttributeInstance(AttributeInstance handle, Attribute attribute) { ++ super(handle, attribute); ++ } ++ ++ @Override ++ public void setBaseValue(double d) { ++ throw new UnsupportedOperationException("Cannot modify default attributes"); ++ } ++ ++ @Override ++ public void addModifier(AttributeModifier modifier) { ++ throw new UnsupportedOperationException("Cannot modify default attributes"); ++ } ++ ++ @Override ++ public void removeModifier(AttributeModifier modifier) { ++ throw new UnsupportedOperationException("Cannot modify default attributes"); ++ } ++} +diff --git a/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeMap.java b/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeMap.java +new file mode 100644 +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 +--- /dev/null ++++ b/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeMap.java +@@ -0,0 +0,0 @@ ++package io.papermc.paper.attribute; ++ ++import com.google.common.collect.Maps; ++import com.google.common.util.concurrent.Callables; ++import com.google.common.util.concurrent.Runnables; ++import net.minecraft.world.entity.ai.attributes.AttributeSupplier; ++import org.bukkit.attribute.Attributable; ++import org.bukkit.attribute.Attribute; ++import org.bukkit.attribute.AttributeInstance; ++import org.bukkit.craftbukkit.attribute.CraftAttributeInstance; ++import org.bukkit.craftbukkit.attribute.CraftAttributeMap; ++import org.jetbrains.annotations.NotNull; ++import org.jetbrains.annotations.Nullable; ++ ++import java.util.Map; ++import java.util.function.Consumer; ++import java.util.function.Function; ++ ++public class UnmodifiableAttributeMap implements Attributable { ++ ++ ++ private final Map attributes = Maps.newHashMap(); ++ private final AttributeSupplier handle; ++ ++ public UnmodifiableAttributeMap(@NotNull AttributeSupplier handle) { ++ this.handle = handle; ++ } ++ ++ @Override ++ public @Nullable AttributeInstance getAttribute(@NotNull Attribute attribute) { ++ var nmsAttribute = CraftAttributeMap.toMinecraft(attribute); ++ var nmsAttributeInstance = this.handle.instances.get(nmsAttribute); ++ if (nmsAttribute == null) { ++ return null; ++ } ++ return new UnmodifiableAttributeInstance(nmsAttributeInstance, attribute); ++ } ++ ++ @Override ++ public void registerAttribute(@NotNull Attribute attribute) { ++ throw new UnsupportedOperationException("Cannot register new attributes here"); ++ } ++} +diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644 +--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java ++++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java +@@ -0,0 +0,0 @@ public final class CraftMagicNumbers implements UnsafeValues { + public int getProtocolVersion() { + return net.minecraft.SharedConstants.getCurrentVersion().getProtocolVersion(); + } ++ ++ @Override ++ public boolean hasDefaultEntityAttributes(NamespacedKey bukkitEntityKey) { ++ return net.minecraft.world.entity.ai.attributes.DefaultAttributes.hasSupplier(net.minecraft.core.Registry.ENTITY_TYPE.get(CraftNamespacedKey.toMinecraft(bukkitEntityKey))); ++ } ++ ++ @Override ++ public org.bukkit.attribute.Attributable getDefaultEntityAttributes(NamespacedKey bukkitEntityKey) { ++ Preconditions.checkArgument(hasDefaultEntityAttributes(bukkitEntityKey), bukkitEntityKey + " doesn't have default attributes"); ++ var supplier = net.minecraft.world.entity.ai.attributes.DefaultAttributes.getSupplier((net.minecraft.world.entity.EntityType) net.minecraft.core.Registry.ENTITY_TYPE.get(CraftNamespacedKey.toMinecraft(bukkitEntityKey))); ++ return new io.papermc.paper.attribute.UnmodifiableAttributeMap(supplier); ++ } + // Paper end + + /** +diff --git a/src/test/java/io/papermc/paper/attribute/EntityTypeAttributesTest.java b/src/test/java/io/papermc/paper/attribute/EntityTypeAttributesTest.java +new file mode 100644 +index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 +--- /dev/null ++++ b/src/test/java/io/papermc/paper/attribute/EntityTypeAttributesTest.java +@@ -0,0 +0,0 @@ ++package io.papermc.paper.attribute; ++ ++import org.bukkit.attribute.Attributable; ++import org.bukkit.attribute.Attribute; ++import org.bukkit.attribute.AttributeInstance; ++import org.bukkit.attribute.AttributeModifier; ++import org.bukkit.entity.EntityType; ++import org.bukkit.support.AbstractTestingBase; ++import org.junit.Test; ++ ++import static org.junit.Assert.assertFalse; ++import static org.junit.Assert.assertNotNull; ++import static org.junit.Assert.assertThrows; ++import static org.junit.Assert.assertTrue; ++ ++public class EntityTypeAttributesTest extends AbstractTestingBase { ++ ++ @Test ++ public void testIllegalEntity() { ++ assertFalse(EntityType.EGG.hasDefaultAttributes()); ++ assertThrows(IllegalArgumentException.class, () -> EntityType.EGG.getDefaultAttributes()); ++ } ++ ++ @Test ++ public void testLegalEntity() { ++ assertTrue(EntityType.ZOMBIE.hasDefaultAttributes()); ++ EntityType.ZOMBIE.getDefaultAttributes(); ++ } ++ ++ @Test ++ public void testUnmodifiabilityOfAttributable() { ++ Attributable attributable = EntityType.ZOMBIE.getDefaultAttributes(); ++ assertThrows(UnsupportedOperationException.class, () -> attributable.registerAttribute(Attribute.GENERIC_ATTACK_DAMAGE)); ++ AttributeInstance instance = attributable.getAttribute(Attribute.GENERIC_FOLLOW_RANGE); ++ assertNotNull(instance); ++ assertThrows(UnsupportedOperationException.class, () -> instance.addModifier(new AttributeModifier("test", 3, AttributeModifier.Operation.ADD_NUMBER))); ++ assertThrows(UnsupportedOperationException.class, () -> instance.setBaseValue(3.2)); ++ } ++}