Already-purring cats should not randomly meow

node.lua

@@ -52,15 +52,6 @@ reg(5, "#e0c040", "#ff8000") -- light orange
 reg(6, "#804000", "#402000") -- dark brown
 reg(7, "#c0a080", "#806020") -- light brown
 
-nodecore.register_ambiance({
-		label = modname .. " ambiance",
-		nodenames = {"group:" .. modname .. "_cat"},
-		interval = 5,
-		chance = 5,
-		sound_name = modname .. "_mew",
-		sound_gain = 0.5
-	})
-
 function myapi.makecat(pos, param2)
 	nodecore.set_loud(pos, {
 			name = modname .. ":cat_" .. math_random(1, myapi.maxcatid),

pet.lua

@@ -57,16 +57,26 @@ nodecore.register_dnt({
 		action = purr
 	})
 
+local function notpurring(pos) return not purring[hashpos(pos)] and {} end
+
 nodecore.register_craft({
 		label = "pet cat",
 		action = "pummel",
 		toolgroups = {thumpy = 1},
 		indexkeys = {"group:" .. modname .. "_cat"},
-		check = function(pos)
-			return not purring[hashpos(pos)]
-		end,
+		check = notpurring,
 		nodes = {
 			{match = {groups = {[modname .. "_cat"] = true}}}
 		},
 		after = purr
 	})
+
+nodecore.register_ambiance({
+		label = modname .. " ambiance",
+		nodenames = {"group:" .. modname .. "_cat"},
+		interval = 5,
+		chance = 5,
+		check = notpurring,
+		sound_name = modname .. "_mew",
+		sound_gain = 0.5
+	})