Add smoke particles at torches

mods/CORE/mcl_particles/init.lua

@@ -1,12 +1,15 @@
-local particle_nodes = {}
-
 mcl_particles = {}
 
+-- Table of particlespawner IDs on a per-node hash basis
+-- Keys: node position hashes
+-- Values: Tables of particlespawner IDs (each node pos can have an arbitrary number of particlespawners)
+local particle_nodes = {}
+
 -- Node particles can be disabled via setting
 local node_particles_allowed = minetest.settings:get_bool("mcl_node_particles", true)
 
 -- Add a particlespawner that is assigned to a given node position.
--- * pos: Node positon. MUST use rounded values!
+-- * pos: Node positon. MUST use integer values!
 -- * particlespawner_definition: definition for minetest.add_particlespawner
 -- NOTE: All particlespawners are automatically removed on shutdown.
 -- Returns particlespawner ID on succcess and nil on failure
@@ -22,22 +25,28 @@ function mcl_particles.add_node_particlespawner(pos, particlespawner_definition)
 	if id == -1 then
 		return
 	end
-	particle_nodes[poshash] = id
+	if not particle_nodes[poshash] then
+		particle_nodes[poshash] = {}
+	end
+	table.insert(particle_nodes[poshash], id)
 	return id
 end
 
--- Deleted a particlespawner that is assigned to a node position, if one exists.
--- Otherwise, this does nothing.
--- pos: Node positon. MUST use rounded values!
--- Returns true if particlespawner could be removed and false if none existed
-function mcl_particles.delete_node_particlespawner(pos)
+-- Deletes all particlespawners that are assigned to a node position.
+-- If no particlespawners exist for this position, nothing happens.
+-- pos: Node positon. MUST use integer values!
+-- Returns true if particlespawner could be removed and false if not
+function mcl_particles.delete_node_particlespawners(pos)
 	if not node_particles_allowed then
 		return false
 	end
 	local poshash = minetest.hash_node_position(pos)
-	local id = particle_nodes[poshash]
-	if id then
-		minetest.delete_particlespawner(id)
+	local ids = particle_nodes[poshash]
+	if ids then
+		for i=1, #ids do
+			minetest.delete_particlespawner(ids[i])
+		end
+		particle_nodes[poshash] = nil
 		return true
 	end
 	return false

mods/ITEMS/mcl_furnaces/init.lua

@@ -387,7 +387,7 @@ if minetest.get_modpath("screwdriver") then
 	on_rotate = screwdriver.rotate_simple
 	after_rotate_active = function(pos)
 		local node = minetest.get_node(pos)
-		mcl_particles.delete_node_particlespawner(pos)
+		mcl_particles.delete_node_particlespawners(pos)
 		spawn_flames(pos, node.param2)
 	end
 end
@@ -499,7 +499,7 @@ minetest.register_node("mcl_furnaces:furnace_active", {
 		spawn_flames(pos, node.param2)
 	end,
 	on_destruct = function(pos)
-		mcl_particles.delete_node_particlespawner(pos)
+		mcl_particles.delete_node_particlespawners(pos)
 	end,
 
 	allow_metadata_inventory_put = allow_metadata_inventory_put,

mods/ITEMS/mcl_torches/init.lua

@@ -2,7 +2,8 @@ local S = minetest.get_translator("mcl_torches")
 local LIGHT_TORCH = minetest.LIGHT_MAX
 
 local spawn_flames_floor = function(pos)
-	return mcl_particles.add_node_particlespawner(pos, {
+	-- Flames
+	mcl_particles.add_node_particlespawner(pos, {
 		amount = 8,
 		time = 0,
 		minpos = vector.add(pos, { x = -0.1, y = 0.05, z = -0.1 }),
@@ -16,6 +17,26 @@ local spawn_flames_floor = function(pos)
 		texture = "mcl_particles_flame.png",
 		glow = LIGHT_TORCH,
 	})
+	-- Smoke
+	mcl_particles.add_node_particlespawner(pos, {
+		amount = 0.5,
+		time = 0,
+		minpos = vector.add(pos, { x = -1/16, y = 0.04, z = -1/16 }),
+		maxpos = vector.add(pos, { x = -1/16, y = 0.06, z = -1/16 }),
+		minvel = { x = 0, y = 0.5, z = 0 },
+		maxvel = { x = 0, y = 0.6, z = 0 },
+		minexptime = 2.0,
+		maxexptime = 2.0,
+		minsize = 1.5,
+		maxsize = 1.5,
+		texture = "mcl_particles_smoke_anim.png",
+		animation = {
+			type = "vertical_frames",
+			aspect_w = 8,
+			aspect_h = 8,
+			length = 2.05,
+		},
+	})
 end
 
 local spawn_flames_wall = function(pos, param2)
@@ -36,7 +57,8 @@ local spawn_flames_wall = function(pos, param2)
 	else
 		return
 	end
-	return mcl_particles.add_node_particlespawner(pos, {
+	-- Flames
+	mcl_particles.add_node_particlespawner(pos, {
 		amount = 8,
 		time = 0,
 		minpos = vector.add(pos, minrelpos),
@@ -50,10 +72,30 @@ local spawn_flames_wall = function(pos, param2)
 		texture = "mcl_particles_flame.png",
 		glow = LIGHT_TORCH,
 	})
+	-- Smoke
+	mcl_particles.add_node_particlespawner(pos, {
+		amount = 0.5,
+		time = 0,
+		minpos = vector.add(pos, minrelpos),
+		maxpos = vector.add(pos, maxrelpos),
+		minvel = { x = 0, y = 0.5, z = 0 },
+		maxvel = { x = 0, y = 0.6, z = 0 },
+		minexptime = 2.0,
+		maxexptime = 2.0,
+		minsize = 1.5,
+		maxsize = 1.5,
+		texture = "mcl_particles_smoke_anim.png",
+		animation = {
+			type = "vertical_frames",
+			aspect_w = 8,
+			aspect_h = 8,
+			length = 2.05,
+		},
+	})
 end
 
 local remove_flames = function(pos)
-	mcl_particles.delete_node_particlespawner(pos)
+	mcl_particles.delete_node_particlespawners(pos)
 end
 
 --