Heart particles while cats are purring

pet.lua

@@ -1,8 +1,8 @@
 -- LUALOCALS < ---------------------------------------------------------
 local math, minetest, nodecore, pairs, vector
     = math, minetest, nodecore, pairs, vector
-local math_abs, math_random
-    = math.abs, math.random
+local math_abs, math_floor, math_random
+    = math.abs, math.floor, math.random
 -- LUALOCALS > ---------------------------------------------------------
 
 local modname = minetest.get_current_modname()
@@ -54,6 +54,32 @@ local function playernear(pos)
 	end
 end
 
+local function hearticles(pos, offs, time, qty)
+	minetest.add_particlespawner({
+			amount = math_floor(2 * qty),
+			time = time,
+			minpos = vector.add(pos, offs),
+			maxpos = vector.subtract(pos, offs),
+			texture = "nc_cats_heart.png",
+			minexptime = 1,
+			maxexptime = 2,
+			minsize = 1,
+			maxsize = 2,
+			glow = 4
+		})
+end
+local function hearticles_all(pos, time, qty)
+	local pdist = 0.55
+	for _, d in pairs({
+			{p = {x = pdist, y = 0, z = 0}, o = {x = 0, y = pdist, z = pdist}},
+			{p = {x = 0, y = pdist, z = 0}, o = {x = pdist, y = 0, z = pdist}},
+			{p = {x = 0, y = 0, z = pdist}, o = {x = pdist, y = pdist, z = 0}},
+		}) do
+		hearticles(vector.add(pos, d.p), d.o, time, qty)
+		hearticles(vector.subtract(pos, d.p), d.o, time, qty)
+	end
+end
+
 local function purr(pos, data)
 	purring[hashpos(pos)] = nodecore.gametime
 
@@ -65,6 +91,7 @@ local function purr(pos, data)
 			gain = purrgain,
 			not_ephemeral = fade
 		})
+	hearticles_all(pos, purrtimes[id], purrtimes[id])
 	if fade then
 		minetest.sound_fade(sh, -purrgain / purrtimes[id], 0)
 		return minetest.after(purrtimes[id], function()
@@ -104,6 +131,7 @@ local function furballcheck(pos, node, ejectpos)
 end
 local function purrstart(pos, data)
 	furballcheck(pos)
+	hearticles_all(pos, 0.05, 1)
 	return purr(pos, data)
 end