Skeletons are now affected by Holy damage (#41757)

Resources/Prototypes/Damage/modifier_sets.yml

@@ -226,7 +226,7 @@
     Poison: 0.0
     Radiation: 0.0
 
-# immune to everything except physical and heat damage
+# immune to everything except physical and heat damage; vulnerable to holy damage because they're undead, but not as vulnerable as a ghost or demon would be
 - type: damageModifierSet
   id: Skeleton
   coefficients:
@@ -239,7 +239,7 @@
     Asphyxiation: 0.0
     Bloodloss: 0.0
     Cellular: 0.0
-    Holy: 1.5 # DeltaV
+    Holy: 1.5 # DeltaV - was 0.5
   flatReductions:
     Blunt: 5
 

Resources/Prototypes/Entities/Mobs/Species/skeleton.yml

@@ -17,8 +17,8 @@
     requiredLegs: 2
     gibSound: /Audio/Effects/bone_rattle.ogg
   - type: Damageable
-    damageContainer: InorganicMetaphysical # DeltaV
-    damageModifierSet: Skeleton
+    damageContainer: InorganicMetaphysical # DeltaV - Was BiologicalMetaphysical
+    damageModifierSet: Skeleton # If we get non-Holy metaphysical damage types in the future, the Skeleton set might need to be adjusted to provide immunity to them (depends on what exactly the new types are)
   - type: DamageVisuals
     damageOverlayGroups:
       Brute:
@@ -83,9 +83,10 @@
       effects: # TODO: when magic is around - make a milk transformation to a skeleton monster
       - !type:HealthChange
         damage:
-          groups:
-            Burn: -1 # healing obviously up to discussion
-            Brute: -0.75 # these groups are the only 2 possible ways to damage a skeleton
+          groups: # these groups are the only 3 possible ways to damage a skeleton. numerical values obviously up to discussion
+            Burn: -1
+            Brute: -0.75
+            Metaphysical: -2 # Gameplay: skeletons need some way to heal holy damage. Lore: milk is an unholy liquid that shuns the light of god. (/j)
       - !type:PopupMessage
         type: Local
         visualType: Large