Remove FabricItem.getAttributeModifiers.

fabric-item-api-v1/src/main/java/net/fabricmc/fabric/api/item/v1/FabricItem.java

@@ -16,7 +16,6 @@
 
 package net.fabricmc.fabric.api.item.v1;
 
-import net.minecraft.component.type.AttributeModifiersComponent;
 import net.minecraft.enchantment.Enchantment;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.Item;
@@ -64,19 +63,6 @@ public interface FabricItem {
 		return false;
 	}
 
-	/**
-	 * Return the attribute modifiers to apply when this stack is worn in a living entity equipment slot.
-	 * Stack-aware version of {@link Item#getAttributeModifiers()}.
-	 *
-	 * <p>Note that attribute modifiers are only updated when the stack changes, i.e. when {@code ItemStack.areEqual(old, new)} is false.
-	 *
-	 * @param stack the current stack
-	 * @return the attribute modifiers
-	 */
-	default AttributeModifiersComponent getAttributeModifiers(ItemStack stack) {
-		return ((Item) this).getAttributeModifiers();
-	}
-
 	/**
 	 * Returns a leftover item stack after {@code stack} is consumed in a recipe.
 	 * (This is also known as "recipe remainder".)

fabric-item-api-v1/src/main/java/net/fabricmc/fabric/mixin/item/ItemStackMixin.java

@@ -25,10 +25,7 @@ import org.apache.commons.lang3.mutable.MutableBoolean;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Redirect;
 
-import net.minecraft.component.ComponentType;
-import net.minecraft.component.type.AttributeModifiersComponent;
 import net.minecraft.entity.EquipmentSlot;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.item.Item;
@@ -75,27 +72,4 @@ public abstract class ItemStackMixin implements FabricItemStack {
 
 		original.call(instance, amount, serverWorld, serverPlayerEntity, consumer);
 	}
-
-	@Redirect(
-			method = "appendAttributeModifiersTooltip",
-			at = @At(
-					value = "INVOKE",
-					target = "Lnet/minecraft/item/ItemStack;getOrDefault(Lnet/minecraft/component/ComponentType;Ljava/lang/Object;)Ljava/lang/Object;"
-			)
-	)
-	public Object appendAttributeModifiersTooltip(ItemStack stack, ComponentType<AttributeModifiersComponent> type, Object fallback) {
-		return getItem().getAttributeModifiers(stack);
-	}
-
-	@Redirect(
-			method = {"applyAttributeModifier", "applyAttributeModifiers"},
-			at = @At(
-					value = "INVOKE",
-					target = "Lnet/minecraft/item/Item;getAttributeModifiers()Lnet/minecraft/component/type/AttributeModifiersComponent;"
-			)
-	)
-	public AttributeModifiersComponent applyAttributeModifiers(Item item) {
-		ItemStack stack = (ItemStack) (Object) this;
-		return item.getAttributeModifiers(stack);
-	}
 }

fabric-item-api-v1/src/testmod/java/net/fabricmc/fabric/test/item/UpdatingItem.java

@@ -17,6 +17,7 @@
 package net.fabricmc.fabric.test.item;
 
 import net.minecraft.block.BlockState;
+import net.minecraft.component.DataComponentTypes;
 import net.minecraft.component.type.AttributeModifierSlot;
 import net.minecraft.component.type.AttributeModifiersComponent;
 import net.minecraft.entity.Entity;
@@ -37,7 +38,12 @@ public class UpdatingItem extends Item {
 	private final boolean allowUpdateAnimation;
 
 	public UpdatingItem(boolean allowUpdateAnimation) {
-		super(new Settings());
+		super(new Settings()
+					.component(DataComponentTypes.ATTRIBUTE_MODIFIERS, AttributeModifiersComponent.builder()
+						.add(EntityAttributes.GENERIC_ATTACK_DAMAGE, PLUS_FIVE, AttributeModifierSlot.MAINHAND)
+						.build()
+					)
+		);
 		this.allowUpdateAnimation = allowUpdateAnimation;
 	}
 
@@ -63,14 +69,6 @@ public class UpdatingItem extends Item {
 		return !stack.contains(ItemUpdateAnimationTest.TICKS) || stack.getOrDefault(ItemUpdateAnimationTest.TICKS, 0) % 600 < 300;
 	}
 
-	@Override
-	public AttributeModifiersComponent getAttributeModifiers(ItemStack stack) {
-		// Give + 5 attack damage for 15 seconds every 30 seconds.
-		return AttributeModifiersComponent.builder()
-				.add(EntityAttributes.GENERIC_ATTACK_DAMAGE, PLUS_FIVE, AttributeModifierSlot.MAINHAND)
-				.build();
-	}
-
 	@Override
 	public float getMiningSpeed(ItemStack stack, BlockState state) {
 		return isEnabled(stack) ? 20 : super.getMiningSpeed(stack, state);

gradle.properties

@@ -2,7 +2,7 @@ org.gradle.jvmargs=-Xmx2560M
 org.gradle.parallel=true
 fabric.loom.multiProjectOptimisation=true
 
-version=0.99.3
+version=0.99.4
 minecraft_version=1.21-pre1
 yarn_version=+build.2
 loader_version=0.15.11
@@ -30,7 +30,7 @@ fabric-entity-events-v1-version=1.6.12
 fabric-events-interaction-v0-version=0.7.10
 fabric-game-rule-api-v1-version=1.0.52
 fabric-gametest-api-v1-version=2.0.0
-fabric-item-api-v1-version=10.0.1
+fabric-item-api-v1-version=11.0.0
 fabric-item-group-api-v1-version=4.0.43
 fabric-key-binding-api-v1-version=1.0.47
 fabric-keybindings-v0-version=0.2.45