Can now change the balance of players while they are offline, and emeraldbank.add_emeralds also takes a string of the playername to select the player.

commands.lua

@@ -71,26 +71,26 @@ core.register_chatcommand("emeralds", {
     privs = {server=true},
     func = function(name, param)
         local playername, stringnum = param:match("([^ ]+) (.+)")
-        local player
         local num = tonumber(stringnum)
         if playername and num then
-            player = core.get_player_by_name(playername)
-        end
-        if player and num then
-            emeraldbank.add_emeralds(player, num)
+            local success = emeraldbank.add_emeralds(playername, num)
+            if success then
                 atm.read_account(playername)
                 minetest.chat_send_player(name, S("@1 has now @2 emeralds in bank account",
                 playername, atm.balance[playername]))
                 return true
             else
-            -- Notify the command issuer that the player is not found or not online
                 minetest.chat_send_player(name, S("Player @1 not found or not online.", playername))
                 return false
             end
+        else
+            -- Notify the command issuer that the input is invalid
+            minetest.chat_send_player(name, S("Invalid input. Please specify a player and a number."))
+            return false
+        end
     end
 })
 
-
 -- experimental upgrade command
 core.register_chatcommand("upgrade", {
      description = S("Admin Command! Upgrade a shop"),

functions.lua

@@ -26,18 +26,32 @@ function emeraldbank.get_emeralds(name)
 	return atm.balance[name]
 end
 
+-- Accepts a player object or player name as input now
 function emeraldbank.add_emeralds(player, num)
     if not player then return false end
-   local meta = player:get_meta()
-   local name = player:get_player_name()
-   atm.read_account(name)
-   if num then
-      if atm.balance[name] then
-	 atm.balance[name] = math.floor(atm.balance[name] + num)
+
+    local name
+    if type(player) == "string" then
+        name = player
     else
-	 atm.balance[name] = num
+        name = player:get_player_name()
     end
+
+    atm.read_account(name)
+
+    -- Check if atm.balance[name] exists
+    if atm.balance[name] == nil then
+        return false
+    end
+
+    if num then
+        atm.balance[name] = math.floor(atm.balance[name] + num)
+
+        -- Update actionbar only if 'player' is a player object
+        if type(player) ~= "string" then
             mcl_title.set(player, "actionbar", {text=S("Emeralds in Bank: @1", atm.balance[name]), color="yellow"})
+        end
+
         atm.save_account(name)
         return true
     end