added custom after_activate function check

api.lua

@@ -2099,9 +2099,9 @@ local mob_punch = function(self, hitter, tflp, tool_capabilities, dir)
 	end
 
 	-- mob health check
-	if self.health <= 0 then
-		return
-	end
+--	if self.health <= 0 then
+--		return
+--	end
 
 	-- error checking when mod profiling is enabled
 	if not tool_capabilities then
@@ -2507,6 +2507,11 @@ local mob_activate = function(self, staticdata, def, dtime)
 		end
 	end
 
+	-- run after_activate
+	if def.after_activate then
+		def.after_activate(self, staticdata, def, dtime)
+	end
+
 	if use_cmi then
 		self._cmi_components = cmi.activate_components(self.serialized_cmi_components)
 		cmi.notify_activate(self.object, dtime)

api.txt

@@ -1,5 +1,5 @@
 
-MOB API (13th October 2017)
+MOB API (18th October 2017)
 
 The mob api is a function that can be called on by other mods to add new animals or monsters into minetest.
 
@@ -110,6 +110,7 @@ Custom mob functions inside mob registry:
         'on_rightclick' its same as in minetest.register_entity()
         'on_blast' is called when an explosion happens near mob when using TNT functions, parameters are (object, damage) and returns (do_damage, do_knockback, drops)
         'on_spawn' is a custom function that runs on mob spawn with 'self' as variable, return true at end of function to run only once.
+        'after_activate' is a custom function that runs once mob has been activated with the paramaters (self, staticdata, def, dtime)
         'on_breed' called when two similar mobs breed, paramaters are (parent1, parent2) objects, return false to stop child from being resized and owner/tamed flags and child textures being applied.
         'on_grown' is called when a child mob has grown up, only paramater is (self).
         'do_punch' called when mob is punched with paramaters (self, hitter, time_from_last_punch, tool_capabilities, direction), return false to stop punch damage and knockback from taking place.

api_new.txt

@@ -1,5 +1,5 @@
 
-Mobs Redo API (last updated 13th Oct 2017)
+Mobs Redo API (last updated 18th Oct 2017)
 ==========================================
 
 Welcome to the world of mobs in minetest and hopefully an easy guide to defining
@@ -236,6 +236,8 @@ enhance mob functionality and have them do many interesting things:
                     (do_damage, do_knockback, drops)
    'on_spawn'       is a custom function that runs on mob spawn with 'self' as
                     variable, return true at end of function to run only once.
+   'after_activate' is a custom function that runs once mob has been activated
+                    with these paramaters (self, staticdata, def, dtime)
    'on_breed'       called when two similar mobs breed, paramaters are
                     (parent1, parent2) objects, return false to stop child from
                     being resized and owner/tamed flags and child textures being