Air bubbles have a more explicit description

Killing an aquatic horror will fill the surroundings with air bubbles

game/modules/tome/class/Grid.lua

@@ -144,7 +144,7 @@ function _M:tooltip(x, y)
 	if game.level.map.lites(x, y) then tstr:add({"color", "YELLOW"}, "Lit", {"color", "LAST"}, true) end
 	if self:check("block_sight", x, y) then tstr:add({"color", "UMBER"}, "Blocks sight", {"color", "LAST"}, true) end
 	if self:check("block_move", x, y, game.player) then tstr:add({"color", "UMBER"}, "Blocks movement", {"color", "LAST"}, true) end
-	if self:attr("air_level") then tstr:add({"color", "LIGHT_BLUE"}, "Special breathing method required", {"color", "LAST"}, true) end
+	if self:attr("air_level") and self:attr("air_level") < 0 then tstr:add({"color", "LIGHT_BLUE"}, "Special breathing method required", {"color", "LAST"}, true) end
 	if self:attr("dig") then tstr:add({"color", "LIGHT_UMBER"}, "Diggable", {"color", "LAST"}, true) end
 	if game.level.map.attrs(x, y, "no_teleport") then tstr:add({"color", "VIOLET"}, "Cannot teleport to this place", {"color", "LAST"}, true) end
 

game/modules/tome/data/general/grids/water.lua

@@ -98,6 +98,7 @@ newEntity{ base = "WATER_DOOR_OPEN", define_as = "WATER_DOOR_OPEN_VERT", image =
 newEntity{
 	define_as = "WATER_FLOOR_BUBBLE",
 	name = "underwater air bubble", image = "terrain/underwater/subsea_floor_bubbles.png",
+	desc = "#LIGHT_BLUE#Replenishes air level when standing inside.#LAST#", show_tooltip = true,
 	display = ':', color=colors.LIGHT_BLUE, back_color=colors.DARK_BLUE,
 	air_level = 15, nb_charges = resolvers.rngrange(4, 7),
 	force_clone = true,

game/modules/tome/data/general/npcs/horror_aquatic.lua

@@ -40,6 +40,21 @@ newEntity{
 
 	no_breath = 1,
 	fear_immune = 1,
+
+	on_die = function(self)
+		local g = game.zone.grid_list.WATER_FLOOR_BUBBLE
+		if not g then return end
+		for i = self.x-1, self.x+1 do for j = self.y-1, self.y+1 do
+			if rng.percent(65) and game.level.map:isBound(i, j) then
+				local og = game.level.map(i, j, engine.Map.TERRAIN)
+				if og and not og.special and not og.change_level and og.type == "floor" and og.subtype == "underwater" then
+					local ng = g:clone()
+					ng:resolve() ng:resolve(nil, true)
+					game.zone:addEntity(game.level, ng, "terrain", i, j)
+				end
+			end
+		end end
+	end,
 }
 
 newEntity{ base = "BASE_NPC_HORROR_AQUATIC",