CatServer/patches/net/minecraft/enchantment/EnchantmentThorns.java.patch

--- ../src-base/minecraft/net/minecraft/enchantment/EnchantmentThorns.java
+++ ../src-work/minecraft/net/minecraft/enchantment/EnchantmentThorns.java
@@ -11,7 +11,7 @@
 
 public class EnchantmentThorns extends Enchantment
 {
-    public EnchantmentThorns(Enchantment.Rarity rarityIn, EntityEquipmentSlot... slots)
+    public EnchantmentThorns(Rarity rarityIn, EntityEquipmentSlot... slots)
     {
         super(rarityIn, EnumEnchantmentType.ARMOR_CHEST, slots);
         this.setName("thorns");
@@ -51,12 +51,12 @@
 
             if (!itemstack.isEmpty())
             {
-                itemstack.damageItem(3, user);
+                damageArmor(itemstack, 3, user);
             }
         }
         else if (!itemstack.isEmpty())
         {
-            itemstack.damageItem(1, user);
+            damageArmor(itemstack, 1, user);
         }
     }
 
@@ -76,4 +76,25 @@
     {
         return level > 10 ? level - 10 : 1 + rnd.nextInt(4);
     }
+
+    private void damageArmor(ItemStack stack, int amount, EntityLivingBase entity)
+    {
+        int slot = -1;
+        int x = 0;
+        for (ItemStack i : entity.getArmorInventoryList())
+        {
+            if (i == stack){
+                slot = x;
+                break;
+            }
+            x++;
+        }
+        if (slot == -1 || !(stack.getItem() instanceof net.minecraftforge.common.ISpecialArmor))
+        {
+            stack.damageItem(1, entity);
+            return;
+        }
+        net.minecraftforge.common.ISpecialArmor armor = (net.minecraftforge.common.ISpecialArmor)stack.getItem();
+        armor.damageArmor(entity, stack, DamageSource.causeThornsDamage(entity), amount, slot);
+    }
 }