Fix hearable rain in Nether and End dimensions

mods/ENVIRONMENT/weather_pack/rain.lua

@@ -45,7 +45,7 @@ rain.add_rain_particles = function(player)
   rain.last_rp_count = 0
   for i=rain.particles_count, 1,-1 do
     local random_pos_x, random_pos_y, random_pos_z = weather.get_random_pos_by_player_look_dir(player)
-    if minetest.get_node_light({x=random_pos_x, y=random_pos_y, z=random_pos_z}, 0.5) == 15 then
+    if weather.is_outdoor({x=random_pos_x, y=random_pos_y, z=random_pos_z}) then
       rain.last_rp_count = rain.last_rp_count + 1
       minetest.add_particle({
         pos = {x=random_pos_x, y=random_pos_y, z=random_pos_z},
@@ -159,6 +159,7 @@ rain.make_weather = function()
 
   for _, player in ipairs(minetest.get_connected_players()) do
     if (weather.is_underwater(player) or not mcl_util.has_weather(player:getpos())) then
+      rain.remove_sound(player)
       return false
     end
     rain.add_player(player)

mods/ENVIRONMENT/weather_pack/weather_core.lua

@@ -38,8 +38,13 @@ weather.get_rand_end_time = function(min_duration, max_duration)
   end 
 end
 
+-- Returns true if pos is outdoor.
+-- Outdoor is defined as any node in the Overworld under open sky.
+-- FIXME: Nodes below glass also count as “outdoor”, this should not be the case.
 weather.is_outdoor = function(pos)
-  if minetest.get_node_light({x=pos.x, y=pos.y + 1, z=pos.z}, 0.5) == 15 then
+  local cpos = {x=pos.x, y=pos.y+1, z=pos.z}
+  local _, dim = mcl_util.y_to_layer(cpos.y)
+  if minetest.get_node_light(cpos, 0.5) == 15 and dim == "overworld" then
     return true
   end
   return false