Give slimes 4x armor and 4x protection

Since they are just a head, they don't need to protect other parts of their body, so the helmet is more effective

src/generated/resources/data/forge/tags/entity_types/small_armor.json

@@ -0,0 +1,6 @@
+{
+  "replace": false,
+  "values": [
+    "#forge:slimes"
+  ]
+}

src/main/java/slimeknights/tconstruct/common/TinkerTags.java

@@ -394,7 +394,8 @@ private static void init() {}
     public static final TagKey<EntityType<?>> KILLAGERS = tag("killagers");
     /** Mobs that rarely spawn, boosts drop rate of severing */
     public static final TagKey<EntityType<?>> RARE_MOBS = tag("rare_mobs");
-
+    /** Mobs that get the 4x protection boost due to only 1 armor piece */
+    public static final TagKey<EntityType<?>> SMALL_ARMOR = forgeTag("small_armor");
 
     private static TagKey<EntityType<?>> tag(String name) {
       return TagKey.create(Registry.ENTITY_TYPE_REGISTRY, TConstruct.getResource(name));

src/main/java/slimeknights/tconstruct/common/data/tags/EntityTypeTagProvider.java

@@ -30,6 +30,8 @@ public void addTags() {
     this.tag(TinkerTags.EntityTypes.VILLAGERS).add(EntityType.VILLAGER, EntityType.WANDERING_TRADER, EntityType.ZOMBIE_VILLAGER);
     this.tag(TinkerTags.EntityTypes.ILLAGERS).add(EntityType.EVOKER, EntityType.ILLUSIONER, EntityType.PILLAGER, EntityType.VINDICATOR, EntityType.WITCH);
     this.tag(TinkerTags.EntityTypes.KILLAGERS).addTags(TinkerTags.EntityTypes.VILLAGERS, TinkerTags.EntityTypes.ILLAGERS).add(EntityType.IRON_GOLEM, EntityType.RAVAGER);
+
+    this.tag(TinkerTags.EntityTypes.SMALL_ARMOR).addTag(TinkerTags.EntityTypes.SLIMES);
   }
 
   @Override

src/main/java/slimeknights/tconstruct/tools/logic/ToolEvents.java

@@ -44,6 +44,7 @@
 import slimeknights.tconstruct.library.events.TinkerToolEvent.ToolHarvestEvent;
 import slimeknights.tconstruct.library.modifiers.Modifier;
 import slimeknights.tconstruct.library.modifiers.ModifierEntry;
+import slimeknights.tconstruct.library.modifiers.dynamic.MobDisguiseModifier;
 import slimeknights.tconstruct.library.modifiers.hooks.IArmorWalkModifier;
 import slimeknights.tconstruct.library.tools.capability.TinkerDataCapability;
 import slimeknights.tconstruct.library.tools.capability.TinkerDataKeys;
@@ -57,7 +58,6 @@
 import slimeknights.tconstruct.library.utils.BlockSideHitListener;
 import slimeknights.tconstruct.tools.TinkerModifiers;
 import slimeknights.tconstruct.tools.modifiers.defense.ProjectileProtectionModifier;
-import slimeknights.tconstruct.library.modifiers.dynamic.MobDisguiseModifier;
 import slimeknights.tconstruct.tools.modifiers.upgrades.armor.HasteArmorModifier;
 
 import java.util.List;
@@ -266,29 +266,37 @@ static void livingHurt(LivingHurtEvent event) {
 
     // determine if there is any modifiable armor, if not nothing to do
     // TODO: shields should support this hook too, probably with a separate tag so holding armor does not count as a shield
-    EquipmentContext context = new EquipmentContext(entity);
-    if (!context.hasModifiableArmor()) {
-      return;
-    }
-
-    // first, fetch vanilla enchant level, assuming its not bypassed in vanilla
     DamageSource source = event.getSource();
+    EquipmentContext context = new EquipmentContext(entity);
     int vanillaModifier = 0;
-    if (!source.isBypassMagic()) {
-      vanillaModifier = EnchantmentHelper.getDamageProtection(entity.getArmorSlots(), source);
-    }
-
-    // next, determine how much tinkers armor wants to change it
-    // note that armor modifiers can choose to block "absolute damage" if they wish, currently just starving damage I think
-    float modifierValue = vanillaModifier;
+    float modifierValue = 0;
     float originalDamage = event.getAmount();
-    for (EquipmentSlot slotType : ModifiableArmorMaterial.ARMOR_SLOTS) {
-      IToolStackView tool = context.getToolInSlot(slotType);
-      if (tool != null && !tool.isBroken()) {
-        for (ModifierEntry entry : tool.getModifierList()) {
-          modifierValue = entry.getModifier().getProtectionModifier(tool, entry.getLevel(), context, slotType, source, modifierValue);
+
+    // for our own armor, we have boosts from modifiers to consider
+    if (context.hasModifiableArmor()) {
+      // first, fetch vanilla enchant level, assuming its not bypassed in vanilla
+      if (!source.isBypassMagic()) {
+        modifierValue = vanillaModifier = EnchantmentHelper.getDamageProtection(entity.getArmorSlots(), source);
+      }
+
+      // next, determine how much tinkers armor wants to change it
+      // note that armor modifiers can choose to block "absolute damage" if they wish, currently just starving damage I think
+      for (EquipmentSlot slotType : ModifiableArmorMaterial.ARMOR_SLOTS) {
+        IToolStackView tool = context.getToolInSlot(slotType);
+        if (tool != null && !tool.isBroken()) {
+          for (ModifierEntry entry : tool.getModifierList()) {
+            modifierValue = entry.getModifier().getProtectionModifier(tool, entry.getLevel(), context, slotType, source, modifierValue);
+          }
         }
       }
+
+      // give slimes a 4x armor boost
+      if (entity.getType().is(TinkerTags.EntityTypes.SMALL_ARMOR)) {
+        modifierValue *= 4;
+      }
+    } else if (!source.isBypassMagic() && entity.getType().is(TinkerTags.EntityTypes.SMALL_ARMOR)) {
+      vanillaModifier = EnchantmentHelper.getDamageProtection(entity.getArmorSlots(), source);
+      modifierValue = vanillaModifier * 4;
     }
 
     // TODO: consider hook for modifiers to change damage directly

src/main/java/slimeknights/tconstruct/world/entity/ArmoredSlimeEntity.java

@@ -9,6 +9,11 @@
 import net.minecraft.world.entity.EquipmentSlot;
 import net.minecraft.world.entity.MobSpawnType;
 import net.minecraft.world.entity.SpawnGroupData;
+import net.minecraft.world.entity.ai.attributes.Attribute;
+import net.minecraft.world.entity.ai.attributes.AttributeInstance;
+import net.minecraft.world.entity.ai.attributes.AttributeModifier;
+import net.minecraft.world.entity.ai.attributes.AttributeModifier.Operation;
+import net.minecraft.world.entity.ai.attributes.Attributes;
 import net.minecraft.world.entity.monster.Slime;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.enchantment.EnchantmentHelper;
@@ -24,6 +29,19 @@
 public class ArmoredSlimeEntity extends Slime {
   public ArmoredSlimeEntity(EntityType<? extends Slime> type, Level world) {
     super(type, world);
+    if (!world.isClientSide) {
+      tryAddAttribute(Attributes.ARMOR, new AttributeModifier("tconstruct.small_armor_bonus", 3, Operation.MULTIPLY_TOTAL));
+      tryAddAttribute(Attributes.ARMOR_TOUGHNESS, new AttributeModifier("tconstruct.small_toughness_bonus", 3, Operation.MULTIPLY_TOTAL));
+      tryAddAttribute(Attributes.KNOCKBACK_RESISTANCE, new AttributeModifier("tconstruct.small_resistence_bonus", 3, Operation.MULTIPLY_TOTAL));
+    }
+  }
+
+  /** Adds an attribute if possible */
+  private void tryAddAttribute(Attribute attribute, AttributeModifier modifier) {
+    AttributeInstance instance = getAttribute(attribute);
+    if (instance != null) {
+      instance.addTransientModifier(modifier);
+    }
   }
 
   @Nullable