tweak

dirt.lua

@@ -1,6 +1,8 @@
 
 local S = minetest.get_translator("ethereal")
 
+local math_random = math.random
+
 -- override default dirt (to stop caves cutting away dirt)
 
 minetest.override_item("default:dirt", {is_ground_content = ethereal.cavedirt})
@@ -64,7 +66,7 @@ end
 
 -- flower spread, also crystal and fire flower regeneration
 
-local flower_spread = function(pos, node)
+local function flower_spread(pos, node)
 
 	if (minetest.get_node_light(pos) or 0) < 13 then return end
 
@@ -83,7 +85,7 @@ local flower_spread = function(pos, node)
 		if #grass > 4
 		and not minetest.find_node_near(pos, 4, {"ethereal:crystal_spike"}) then
 
-			pos = grass[math.random(#grass)]
+			pos = grass[math_random(#grass)]
 
 			pos.y = pos.y - 1
 
@@ -105,7 +107,7 @@ local flower_spread = function(pos, node)
 		if #grass > 8
 		and not minetest.find_node_near(pos, 4, {"ethereal:fire_flower"}) then
 
-			pos = grass[math.random(#grass)]
+			pos = grass[math_random(#grass)]
 
 			pos.y = pos.y - 1
 
@@ -137,7 +139,7 @@ local flower_spread = function(pos, node)
 
 	if #seedling > 0 then
 
-		pos = seedling[math.random(#seedling)]
+		pos = seedling[math_random(#seedling)]
 
 		pos.y = pos.y + 1
 
@@ -149,7 +151,7 @@ end
 
 -- grow papyrus up to 4 high and bamboo up to 8 high
 
-local grow_papyrus = function(pos, node)
+local function grow_papyrus(pos, node)
 
 	local oripos = pos.y
 	local high = 4

sealife.lua

@@ -1,6 +1,9 @@
 
 local S = minetest.get_translator("ethereal")
 
+-- local math functions
+
+local math_floor, math_max, math_random = math.floor, math.max, math.random
 -- Seaweed
 
 minetest.register_node("ethereal:seaweed", {
@@ -94,7 +97,7 @@ minetest.register_node("ethereal:seaweed_rooted", {
 	on_dig = function(pos, node, digger)
 
 		local p2 = node.param2 or 16
-		local num = math.max(1, math.floor(p2 / 16))
+		local num = math_max(1, math_floor(p2 / 16))
 		local inv = digger and digger:get_inventory()
 
 		if not inv then return end
@@ -327,7 +330,7 @@ if ethereal.sealife == 1 then
 			if node.name == "ethereal:seaweed_rooted" then
 
 				local p2 = node.param2 or 16
-				local height = math.max(1, math.floor(p2 / 16))
+				local height = math_max(1, math_floor(p2 / 16))
 
 				if height > 13 then return end
 
@@ -345,7 +348,7 @@ if ethereal.sealife == 1 then
 				return
 			end
 
-			local sel = math.random(6)
+			local sel = math_random(6)
 			local pos_up = {x = pos.x, y = pos.y + 1, z = pos.z}
 			local nod = minetest.get_node(pos_up).name
 
@@ -353,7 +356,7 @@ if ethereal.sealife == 1 then
 
 				if sel == 1 then
 
-					local height = math.random(1, 6)
+					local height = math_random(6)
 
 					minetest.set_node(pos, {name = "ethereal:seaweed_rooted",
 							param2 = (height * 16)})

water.lua

@@ -3,6 +3,8 @@ local S = minetest.get_translator("ethereal")
 
 -- Thin Ice
 
+local math_random = math.random
+
 minetest.register_node("ethereal:thin_ice", {
 	description = S("Thin Ice"),
 	tiles = {"default_ice.png^[opacity:80"},
@@ -24,7 +26,7 @@ minetest.register_node("ethereal:thin_ice", {
 
 	on_walk_over = function(pos, node, player)
 
-		if math.random(50) == 13 then -- ice breaks if player unlucky
+		if math_random(50) == 13 then -- ice breaks if player unlucky
 
 			minetest.sound_play("default_ice_dug",
 					{pos = pos, gain = 0.5, pitch = 1.4, max_hear_distance = 5}, true)