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path: root/patches/server/0665-Attributes-API-for-item-defaults.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 8 May 2021 15:01:54 -0700
Subject: [PATCH] Attributes API for item defaults


diff --git a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
index 7e3826b271b2db3b48e6e21ac2e66911bf8993aa..393a19335c52b6e63d37aacdfbeff93e1795c421 100644
--- a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
+++ b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
@@ -72,4 +72,10 @@ public class CraftAttributeInstance implements AttributeInstance {
     public static AttributeModifier convert(net.minecraft.world.entity.ai.attributes.AttributeModifier nms) {
         return new AttributeModifier(nms.getId(), nms.getName(), nms.getAmount(), AttributeModifier.Operation.values()[nms.getOperation().ordinal()]);
     }
+
+    // Paper start - construct using slot
+    public static AttributeModifier convert(net.minecraft.world.entity.ai.attributes.AttributeModifier nms, org.bukkit.inventory.EquipmentSlot slot) {
+        return new AttributeModifier(nms.getId(), nms.getName(), nms.getAmount(), AttributeModifier.Operation.values()[nms.getOperation().ordinal()], slot);
+    }
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
index 1b1147c10c2e9caa4ccf3f2bcdb1211ed39d293a..444da43415fc1341800260ebf9359f29dc628c22 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
@@ -499,6 +499,19 @@ public final class CraftMagicNumbers implements UnsafeValues {
         return CraftMagicNumbers.getItem(itemToBeRepaired.getType()).isValidRepairItem(CraftItemStack.asNMSCopy(itemToBeRepaired), CraftItemStack.asNMSCopy(repairMaterial));
     }
 
+    @Override
+    public com.google.common.collect.Multimap<org.bukkit.attribute.Attribute, org.bukkit.attribute.AttributeModifier> getItemAttributes(org.bukkit.Material material, org.bukkit.inventory.EquipmentSlot equipmentSlot) {
+        Item item = CraftMagicNumbers.getItem(material);
+        if (item == null) {
+            throw new IllegalArgumentException(material + " is not an item and therefore does not have attributes");
+        }
+        com.google.common.collect.ImmutableMultimap.Builder<org.bukkit.attribute.Attribute, org.bukkit.attribute.AttributeModifier> attributeMapBuilder = com.google.common.collect.ImmutableMultimap.builder();
+        item.getDefaultAttributeModifiers(org.bukkit.craftbukkit.CraftEquipmentSlot.getNMS(equipmentSlot)).forEach((attributeBase, attributeModifier) -> {
+            attributeMapBuilder.put(org.bukkit.Registry.ATTRIBUTE.get(CraftNamespacedKey.fromMinecraft(net.minecraft.core.Registry.ATTRIBUTE.getKey(attributeBase))), org.bukkit.craftbukkit.attribute.CraftAttributeInstance.convert(attributeModifier, equipmentSlot));
+        });
+        return attributeMapBuilder.build();
+    }
+
     @Override
     public int getProtocolVersion() {
         return net.minecraft.SharedConstants.getCurrentVersion().getProtocolVersion();