added attack_chance to mob definition

api.lua

@@ -6,7 +6,7 @@ local use_cmi = minetest.global_exists("cmi")
 
 mobs = {
 	mod = "redo",
-	version = "20180928",
+	version = "20181001",
 	intllib = S,
 	invis = minetest.global_exists("invisibility") and invisibility or {},
 }
@@ -117,7 +117,7 @@ local get_distance = function(a, b)
 end
 
 
--- collision function based on similar from jordan4ibanez' open_ai mod
+-- collision function based on jordan4ibanez' open_ai mod
 local collision = function(self)
 
 	local pos = self.object:get_pos()
@@ -1447,7 +1447,7 @@ local general_attack = function(self)
 	end
 
 	-- attack closest player or mob
-	if min_player then
+	if min_player and random(1, 100) > self.attack_chance then
 		do_attack(self, min_player)
 	end
 end
@@ -3030,6 +3030,7 @@ minetest.register_entity(name, {
 	follow = def.follow,
 	jump = def.jump ~= false,
 	walk_chance = def.walk_chance or 50,
+	attack_chance = def.attack_chance or 5,
 	passive = def.passive or false,
 	knock_back = def.knock_back ~= false,
 	blood_amount = def.blood_amount or 5,

api.txt

@@ -74,6 +74,7 @@ functions needed for the mob to work properly which contains the following:
    'docile_by_day'       when true has mobs wandering around during daylight
                          hours and only attacking player at night or when
                          provoked.
+   'attack_chance'       0 to 100 chance the mob will attack (default is 5).
    'attack_monsters'     when true mob will attack monsters.
    'attack_animals'      when true mob will attack animals.
    'attack_npcs'         when true mob will attack npcs within range.