added nametag setting to mob registry

api.lua

@@ -1,9 +1,9 @@
 
--- Mobs Api (1st September 2017)
+-- Mobs Api (5th September 2017)
 
 mobs = {}
 mobs.mod = "redo"
-mobs.version = "20170901"
+mobs.version = "20170905"
 
 
 -- Intllib
@@ -2443,6 +2443,11 @@ local mob_activate = function(self, staticdata, def, dtime)
 	self.visual_size = vis_size
 	self.standing_in = ""
 
+	-- check existing nametag
+	if not self.nametag then
+		self.nametag = def.nametag
+	end
+
 	-- set anything changed above
 	self.object:set_properties(self)
 	set_yaw(self.object, (random(0, 360) - 180) / 180 * pi)

api.txt

@@ -30,6 +30,7 @@ This functions registers a new mob as a Minetest entity.
         'specific_attack' has a table of entity names that monsters can attack {"player", "mobs_animal:chicken"}
         'hp_min' minimum health
         'hp_max' maximum health (mob health is randomly selected between both)
+        'nametag' string containing name of mob to display above entity
         'physical' same is in minetest.register_entity()
         'collisionbox' same is in minetest.register_entity()
         'visual' same is in minetest.register_entity()