Cherry Picked "Fixed Neptunium Fillet Knife taking damage in some ins…

…tances"

src/main/java/com/teammetallurgy/aquaculture/item/ItemFilletKnife.java

@@ -1,9 +1,9 @@
 package com.teammetallurgy.aquaculture.item;
 
-import com.google.common.collect.HashMultimap;
 import com.google.common.collect.Multimap;
 import com.teammetallurgy.aquaculture.Aquaculture;
 import com.teammetallurgy.aquaculture.api.AquacultureAPI;
+import net.minecraft.block.BlockState;
 import net.minecraft.client.util.ITooltipFlag;
 import net.minecraft.enchantment.Enchantment;
 import net.minecraft.enchantment.Enchantments;
@@ -14,8 +14,8 @@
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.SwordItem;
+import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.text.ITextComponent;
-import net.minecraft.util.text.Style;
 import net.minecraft.util.text.TextFormatting;
 import net.minecraft.util.text.TranslationTextComponent;
 import net.minecraft.world.World;
@@ -59,6 +59,16 @@ public Multimap<String, AttributeModifier> getAttributeModifiers(@Nonnull Equipm
         return map;
     }
 
+    @Override
+    public boolean hitEntity(@Nonnull ItemStack stack, @Nonnull LivingEntity target, @Nonnull LivingEntity attacker) {
+        return this.getTier() == AquacultureAPI.MATS.NEPTUNIUM || super.hitEntity(stack, target, attacker);
+    }
+
+    @Override
+    public boolean onBlockDestroyed(@Nonnull ItemStack stack, @Nonnull World world, @Nonnull BlockState state, @Nonnull BlockPos pos, @Nonnull LivingEntity entityLiving) {
+        return getTier() == AquacultureAPI.MATS.NEPTUNIUM || super.onBlockDestroyed(stack, world, state, pos, entityLiving);
+    }
+
     @Override
     @OnlyIn(Dist.CLIENT)
     public void addInformation(@Nonnull ItemStack stack, @Nullable World world, List<ITextComponent> tooltip, ITooltipFlag tooltipFlag) {