Address review comments

mods/CORE/mcl_util/init.lua

@@ -48,16 +48,18 @@ function table.pairs_by_keys(t, f)
 	return iter
 end
 
-function table.pull_random_items(table)
+-- Removes one element randomly selected from the array section of the table and
+-- returns it, or nil if there are no elements in the array section of the table
+function table.remove_random_element(table)
 	local count = #table
-	return function()
-		local idx = math.random(count)
-		local res = table[idx]
-		table[idx] = table[count]
-		table[count] = nil
-		count = count - 1
-		return res
-	end
+	if count == 0 then return nil end
+
+	local idx = math.random(count)
+	local res = table[idx]
+	table[idx] = table[count]
+	table[count] = nil
+	count = count - 1
+	return res
 end
 
 local LOGGING_ON = minetest.settings:get_bool("mcl_logging_default", false)

mods/ENTITIES/mcl_mobs/spawning.lua

@@ -574,7 +574,7 @@ local function has_room(self, pos)
 		nodes = nodes,
 	}))
 	]]
-	if n == ( dx * dy * dz ) then
+	if n == dx * dy * dz then
 		return true
 	end
 
@@ -582,7 +582,7 @@ local function has_room(self, pos)
 	if not minetest.get_node_boxes then return false end
 
 	-- Check if it's possible for a sub-node space check to succeed
-	local needed_in_bottom_section = (dx * dz * ( dy - 1))
+	local needed_in_bottom_section = dx * ( dy - 1) * dz
 	if n < needed_in_bottom_section then return false end
 
 	-- Make sure the entire volume except for the top level is free before checking the top layer

mods/ENTITIES/mobs_mc/villager.lua

@@ -1053,7 +1053,8 @@ local function summon_golem(self)
 	local p1 = vector.offset(pos, -10, -10, -10)
 	local p2 = vector.offset(pos,  10,  10,  10)
 	local nn = minetest.find_nodes_in_area_under_air(p1, p2,{"group:solid","group:water"})
-	for n in table.pull_random_items(nn) do
+	while #nn > 0 do
+		local n = table.remove_random_element(nn)
 		n.y = n.y + 1
 
 		local summon = mcl_mobs.spawn(n, "mobs_mc:iron_golem")

mods/ITEMS/mcl_mobspawners/init.lua

@@ -230,7 +230,8 @@ local function spawn_mobs(pos, elapsed)
 		local mlig = meta:get_int("MinLight")
 		local xlig = meta:get_int("MaxLight")
 
-		for pos2 in table.pull_random_items(air) do
+		while #air > 0 do
+			local pos2 = table.remove_random_element(air)
 			-- only if light levels are within range
 			local lig = minetest.get_node_light(pos2) or 0
 			if lig >= mlig and lig <= xlig then