airblock.lua

@@ -1,7 +1,19 @@
 local S = minetest.get_translator("tech_additions")
 
+local replace_allowed = {}
+replace_allowed["air"] = true
+replace_allowed["default:water_source"] = true
+replace_allowed["default:water_flowing"] = true
+replace_allowed["default:river_water_source"] = true
+replace_allowed["default:river_water_flowing"] = true
+
 local placeairblock = function ()
 	return function(itemstack, user, pointed_thing)
+		local name = user:get_player_name()
+		if not minetest.is_creative_enabled(name) then
+			return
+		end
+
 		local pos = user:getpos()
 		local dir = user:get_look_dir()
 		local distancefromplayer = 3
@@ -10,12 +22,14 @@ local placeairblock = function ()
 			y = pos.y + 1 + (dir.y * distancefromplayer),
 			z = pos.z + (dir.z * distancefromplayer),
 		}
+
+		if minetest.is_protected(new_pos, name) then
+			minetest.record_protection_violation(new_pos, name)
+			return
+		end
+
 		local getPos = minetest.get_node(new_pos)
-		if getPos.name == "air" or
+		if replace_allowed[getPos.name] then
-				getPos.name == "default:water_source" or
-				getPos.name == "default:water_flowing" or
-				getPos.name == "default:river_water_source" or
-				getPos.name == "default:river_water_flowing" then
 			minetest.set_node(new_pos, {name="tech_additions:air_block"})
 		end
 	end