units - undead variation for sea serpent(ish) units (#5323)

* units - serpent walking corpse

* units - WC and Soulless serpent

* adding zombie serpent portrait

* units - set undead_variation to serpent for croc and serpents

data/core/units/monsters/Crocodile.cfg

@@ -69,7 +69,7 @@
     advances_to=null
     {AMLA_DEFAULT}
     cost=31
-    undead_variation=swimmer
+    undead_variation=serpent
     usage=fighter
     description= _ "Swamps are vibrant environments, but often not friendly to humans or orcs. Swamp Lizards are one of the more notable hazards, with their powerful jaws and armored hide. Despite their primitive appearance, these lizards are not stupid, and after generations of being hunted for their hides, they have adopted a ‘two legs bad’ outlook and do not hesitate to avenge their ancestors."
     [special_note]

data/core/units/monsters/Sea_Serpent.cfg

@@ -17,7 +17,7 @@
     advances_to=null
     {AMLA_DEFAULT}
     cost=55
-    undead_variation=swimmer
+    undead_variation=serpent
     usage=fighter
     description= _ "Sea Serpents incite fear and awe in fishermen and sailors, figuring often in folklore as wrathful deities of the sea. Capable of destroying ships effortlessly, and possessed of seemingly endless strength and vitality, these elusive leviathans are destructive and relentless to any who try to combat them. Generally living in the deep seas, Sea Serpents are imposing even to the elite merfolk warriors, and are the reason they seldom inhabit waters far from the shore."
     die_sound=water-blast.wav

data/core/units/monsters/Water_Serpent.cfg

@@ -32,7 +32,7 @@
     advances_to=null
     {AMLA_DEFAULT}
     cost=23
-    undead_variation=swimmer
+    undead_variation=serpent
     usage=fighter
     description= _ "Scholars differ as to the ancestry of the Water Serpent. Some hold that they are the immature young, or mature cousins, of Sea Serpents. Others hold them up as a primitive offshoot of the Nagas. What is certain is that it is wise to avoid waters where they are known to congregate."
     {NOTE_POISON}

data/core/units/undead/Corpse_Soulless.cfg

@@ -254,6 +254,23 @@
         {UNIT_BODY_SOULLESS_GRAPHICS soulless-spider}
     [/variation]
 
+    [variation]
+        variation_id=serpent
+        variation_name= _ "wc_variation^Serpent"
+        inherit=yes
+        profile=portraits/undead/zombie-serpent.png
+        {UNIT_BODY_SOULLESS_STATS    swimmer 4 29}
+        {UNIT_BODY_SOULLESS_GRAPHICS soulless-serpent}
+        [movement_costs]
+            forest=4
+            hills=4
+            sand=1
+        [/movement_costs]
+        [defense]
+            sand=60
+        [/defense]
+    [/variation]
+
     [variation]
         variation_id=swimmer
         variation_name= _ "wc_variation^Swimmer"

data/core/units/undead/Corpse_Walking.cfg

@@ -253,6 +253,23 @@
         {UNIT_BODY_WALKING_CORPSE_GRAPHICS zombie-spider}
     [/variation]
 
+    [variation]
+        variation_id=serpent
+        variation_name= _ "wc_variation^Serpent"
+        inherit=yes
+        profile=portraits/undead/zombie-serpent.png
+        {UNIT_BODY_WALKING_CORPSE_STATS    swimmer 4 20}
+        {UNIT_BODY_WALKING_CORPSE_GRAPHICS zombie-serpent}
+        [movement_costs]
+            forest=4
+            hills=4
+            sand=1
+        [/movement_costs]
+        [defense]
+            sand=60
+        [/defense]
+    [/variation]
+
     [variation]
         variation_id=swimmer
         variation_name= _ "wc_variation^Swimmer"