Move to modpack and /effect command

potions/init.lua

@@ -46,6 +46,8 @@ potions = {
 		air = function(sname, name, fname, time, sdata, flags)
 			local def = {
 				on_use = function(itemstack, user, pointed_thing)
+					local potions_e = potions.players[user:get_player_name()]
+					potions_e.air = potions_e.air + (sdata.time or 0)
 					for i=0, (sdata.time or 0) do
 						minetest.after(i, function()
 							local br = user:get_breath()
@@ -57,6 +59,10 @@ potions = {
 							br = math.min(11, br)
 							br = math.max(0, br)
 							user:set_breath(br)
+							
+							if i==(sdata.time or 0) then
+								potions_e.air = potions_e.air - (sdata.time or 0)
+							end
 						end)
 					end
 					itemstack:take_item()
@@ -510,3 +516,17 @@ end)
 --end)
 
 --dofile(minetest.get_modpath("potions").."/table.lua")
+
+minetest.register_chatcommand("effect", {
+	params = "none",
+	description = "get effect info",
+	func = function(name, param)
+		minetest.chat_send_player(name, "effects:")
+		local potions_e = potions.players[name]
+		if potions_e~=nil then
+			for potion_name, val in pairs(potions_e) do
+				minetest.chat_send_player(name, potion_name .. "=" .. val)
+			end
+		end
+	end,
+})