From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: TonytheMacaroni <tonythemacaroni123@gmail.com>
Date: Thu, 9 Nov 2023 20:34:44 -0500
Subject: [PATCH] Add UUID attribute modifier API


diff --git a/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java b/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java
index 52439f4b959c74027eb191a3af960c70beb978e8..a2c057d92ea34368c7efc538b6e5b15ef342c54e 100644
--- a/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java
+++ b/src/main/java/io/papermc/paper/attribute/UnmodifiableAttributeInstance.java
@@ -5,6 +5,7 @@ import org.bukkit.attribute.Attribute;
 import org.bukkit.attribute.AttributeModifier;
 import org.bukkit.craftbukkit.attribute.CraftAttributeInstance;
 
+import java.util.UUID;
 import java.util.Collection;
 
 public class UnmodifiableAttributeInstance extends CraftAttributeInstance {
@@ -18,6 +19,11 @@ public class UnmodifiableAttributeInstance extends CraftAttributeInstance {
         throw new UnsupportedOperationException("Cannot modify default attributes");
     }
 
+    @Override
+    public void removeModifier(UUID uuid) {
+        throw new UnsupportedOperationException("Cannot modify default attributes");
+    }
+
     @Override
     public void addModifier(AttributeModifier modifier) {
         throw new UnsupportedOperationException("Cannot modify default attributes");
diff --git a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
index c0fb6da6bc3c5b4f37601d898fa421d430417d97..bd0f7dceab1a74dbb7486e126e31152579f987de 100644
--- a/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
+++ b/src/main/java/org/bukkit/craftbukkit/attribute/CraftAttributeInstance.java
@@ -44,6 +44,21 @@ public class CraftAttributeInstance implements AttributeInstance {
         return result;
     }
 
+    // Paper start
+    @Override
+    public AttributeModifier getModifier(java.util.UUID uuid) {
+        Preconditions.checkArgument(uuid != null, "UUID cannot be null");
+        net.minecraft.world.entity.ai.attributes.AttributeModifier modifier = this.handle.getModifier(uuid);
+        return modifier == null ? null : CraftAttributeInstance.convert(modifier);
+    }
+
+    @Override
+    public void removeModifier(java.util.UUID uuid) {
+        Preconditions.checkArgument(uuid != null, "UUID cannot be null");
+        this.handle.removeModifier(uuid);
+    }
+    // Paper end
+
     @Override
     public void addModifier(AttributeModifier modifier) {
         Preconditions.checkArgument(modifier != null, "modifier");