More scaling refinements.

- Cannot do "floor feeling" if floor is already lit.
- No need for steady-state particles on "floor feeling" nodes.

mods/nc_scaling/api.lua

@@ -5,6 +5,23 @@ local minetest, nodecore
 
 local modname = minetest.get_current_modname()
 
+function nodecore.scaling_particles(pos, def)
+	minetest.add_particlespawner(nodecore.underride(def or {}, {
+				texture = "[combine:1x1^[noalpha",
+				collisiondetection = false,
+				amount = 5,
+				time = 1,
+				minpos = {x = pos.x - 0.4, y = pos.y - 0.4, z = pos.z - 0.4},
+				maxpos = {x = pos.x + 0.4, y = pos.y + 0.4, z = pos.z + 0.4},
+				minvel = {x = -0.02, y = -0.02, z = -0.02},
+				maxvel = {x = 0.02, y = 0.02, z = 0.02},
+				minexptime = 1,
+				maxexptime = 1,
+				minsize = 0.2,
+				maxsize = 0.25
+			}))
+end
+
 local function issolid(pos, node)
 	node = node or minetest.get_node(pos)
 	local def = minetest.registered_nodes[node.name]
@@ -30,6 +47,7 @@ local function tryreplace(pos, newname, rootpos)
 				pos = rootpos,
 				node = minetest.get_node(rootpos).name
 			}))
+	nodecore.scaling_particles(pos)
 
 	return true
 end
@@ -52,23 +70,8 @@ function nodecore.scaling_apply(pointed)
 		if ok then tryreplace({x = pos.x, y = pos.y - 1, z = pos.z}, "hang", pos) end
 		return ok
 	elseif pointed.under.y < pointed.above.y and issolid(pointed.under) then
-		return tryreplace(pos, "floor", pointed.under)
+		if (minetest.get_node_light(pointed.above) or 1) < 1 then
+			return tryreplace(pos, "floor", pointed.under)
+		end
 	end
 end
-
-function nodecore.scaling_particles(pos, def)
-	minetest.add_particlespawner(nodecore.underride(def or {}, {
-				texture = "[combine:1x1^[noalpha",
-				collisiondetection = false,
-				amount = 5,
-				time = 1,
-				minpos = {x = pos.x - 0.4, y = pos.y - 0.4, z = pos.z - 0.4},
-				maxpos = {x = pos.x + 0.4, y = pos.y + 0.4, z = pos.z + 0.4},
-				minvel = {x = -0.02, y = -0.02, z = -0.02},
-				maxvel = {x = 0.02, y = 0.02, z = 0.02},
-				minexptime = 1,
-				maxexptime = 1,
-				minsize = 0.2,
-				maxsize = 0.25
-			}))
-end

mods/nc_scaling/node.lua

@@ -5,7 +5,7 @@ local minetest
 
 local modname = minetest.get_current_modname()
 
-local function reg(name, vis, climb, lv)
+local function reg(name, climb, light, fx, lv)
 	local def = {
 		drawtype = "airlike",
 		paramtype = "light",
@@ -14,17 +14,17 @@ local function reg(name, vis, climb, lv)
 		pointable = false,
 		buildable_to = true,
 		air_equivalent = true,
-		groups = {[modname] = lv}
+		climbable = climb and true or nil,
+		light_source = light or nil,
+		groups = {
+			[modname] = lv,
+			[modname .. "_fx"] = fx and 1 or nil
+		}
 	}
-	if vis then
-		def.light_source = 1
-		def.groups[modname .. "_fx"] = 1
-	end
-	def.climbable = (not not climb) or nil
 	return minetest.register_node(modname .. ":" .. name, def)
 end
 
-reg("ceil", true, true, 4)
-reg("wall", true, true, 3)
-reg("floor", true, false, 2)
-reg("hang", false, true, 1)
+reg("ceil", true, 1, true, 4)
+reg("wall", true, 1, true, 3)
+reg("floor", nil, 1, nil, 2)
+reg("hang", true, nil, nil, 1)

mods/nc_scaling/placement.lua

@@ -52,7 +52,6 @@ hand.on_place = function(stack, player, pointed, ...)
 
 	cache[pname] = nil
 	if nodecore.scaling_apply(pointed) then
-		nodecore.scaling_particles(pointed.above)
 		return nodecore.scaling_particles(pointed.above, {
 				time = 0.1,
 				amount = 40,