function emeraldbank.add_emeralds()

bank.lua

@@ -24,22 +24,31 @@ local S = core.get_translator(core.get_current_modname())
 local bankcraft = core.settings:get_bool("emeraldbank.craft") or true
 
 
-function emeraldbank.keep(player, itemstack)
+function emeraldbank.add_emeralds(player, num)
+   if not player then return false end
    local meta = player:get_meta()
    local bankemeralds = meta:get_int("emeraldbank:emerald") -- if nil "get_int()" return 0 Magic!
    local name = player:get_player_name()
+   if num then
+      meta:set_int("emeraldbank:emerald", bankemeralds+num)
+      core.chat_send_player(name, S("Emeralds in Bank: @1", bankemeralds+num) )
+      return true
+   end
+   return false
+end
+
+function emeraldbank.keep(player, itemstack)
    local itemname = itemstack:get_name()
    local itemcount = itemstack:get_count()
+   local name = player:get_player_name()
    if itemname == "mcl_core:emerald" then
       itemstack:take_item(itemcount)
-      meta:set_int("emeraldbank:emerald", bankemeralds+itemcount)
-      core.chat_send_player(name, S("Emeralds in Bank: @1", bankemeralds+itemcount) )
+      emeraldbank.add_emeralds(player, itemcount)
       return true
    end
    if itemname == "mcl_core:emeraldblock" then
-      itemstack:take_item(itemcount*9)
-      meta:set_int("emeraldbank:emerald", bankemeralds+itemcount*9)
-      core.chat_send_player(name, S("Emeralds in Bank: @1", bankemeralds+itemcount*9) )
+      itemstack:take_item(itemcount)
+      emeraldbank.add_emeralds(player, itemcount*9)
       return true
    end
    core.chat_send_player(name, S("You need keep emeralds or emeraldblocks in your hand!") )
@@ -56,9 +65,8 @@ function emeraldbank.take(player)
       if bankemeralds >= 10 then
 	 num = 10
       end
-      meta:set_int("emeraldbank:emerald", bankemeralds-num)
+      emeraldbank.add_emeralds(player, -num)
       core.add_item(pos, "mcl_core:emerald "..num)
-      core.chat_send_player(name, S("Emeralds in Bank: @1", bankemeralds-num) )
       return true
    end
    core.chat_send_player(name, S("Not enough Emeralds in your account") )

commands.lua

@@ -29,6 +29,8 @@ core.register_chatcommand("pay", {
 	description = S("Pay money to other player. Transfer your emeralds to another bank account."),
 	func = function(name, param)
 	   local player1 = core.get_player_by_name(name)
+	   local meta1 = player1:get_meta()
+	   local bankemeralds1 = meta1:get_int("emeraldbank:emerald")
 	   local playername2, stringnum = param:match("([^ ]+) (.+)")
 	   local player2
 	   local num = tonumber(stringnum)
@@ -36,16 +38,12 @@ core.register_chatcommand("pay", {
 	      player2 = core.get_player_by_name(playername2)
 	   end
 	   if player2 and num then
-	      local meta1 = player1:get_meta()
-	      local meta2 = player2:get_meta()
-	      local bankemeralds1 = meta1:get_int("emeraldbank:emerald")
-	      local bankemeralds2 = meta2:get_int("emeraldbank:emerald")
 	      if num > 0 then
 		 if bankemeralds1 >= num then
-		    meta1:set_int("emeraldbank:emerald", bankemeralds1-num)
-		    meta2:set_int("emeraldbank:emerald", bankemeralds2+num)
-		    core.chat_send_player(name, S("Pay Successfully! You have transferred @1 Emeralds. Now you have: @2", num, bankemeralds1-num) )
-		    core.chat_send_player(playername2, S("Pay Successfully! You've gotten @1 Emeralds. Now you have: @2", num, bankemeralds2+num) )
+		    core.chat_send_player(name, S("Pay Successfully! You have transferred @1 Emeralds." , num) )
+		    core.chat_send_player(playername2, S("Pay Successfully! You've gotten @1 Emeralds.", num) )
+		    emeraldbank.add_emeralds(player1, -num)
+		    emeraldbank.add_emeralds(player2, num)
 		 else
 		    core.chat_send_player(name, S("Not enough Emeralds in your account") )
 		 end
@@ -71,10 +69,7 @@ core.register_chatcommand("emeralds", {
 	      player = core.get_player_by_name(playername)
 	   end
 	   if player and num then
-	      local meta = player:get_meta()
-	      local bankemeralds = meta:get_int("emeraldbank:emerald")
-	      meta:set_int("emeraldbank:emerald", bankemeralds+num)
-	      core.chat_send_player(name, S("Emeralds in @1 bank account: @2", playername, bankemeralds+num) )
+	      emeraldbank.add_emeralds(player, num)
 	      return true
 	   end
 	   return false