Update init.lua

Made some things look nicer

playtime/init.lua

@@ -53,23 +53,23 @@ local function format_duration(seconds)
 end
 
 minetest.register_chatcommand("playtime", {
-	params = "<player_name>",
+	params = "[playername]",
 	description = S("See your total playtime on this server"),
 	func = function(name, player_name)
-		if player_name == '' then
+		if player_name == "" then
             player_name = name
+			if minetest.is_singleplayer() then
+				player_name = "singleplayer"
+			end
         end
-		if (player_name == '') and minetest.is_singleplayer() then
-			player_name = 'singleplayer'
-		end
-		if not minetest.player_exists(player_name) then
-			return false, S('You must enter a existing player name!')
-		end
 		if minetest.get_player_by_name(player_name) then
 			return true,
 				C("#63d437", "Total: ")..C("#ffea00", format_duration(playtime.get_total_playtime(player_name))).."\n"..
 				C("#63d437", "Current: ")..C("#ffea00", format_duration(playtime.get_session_playtime(player_name)))
 		else
+			if not minetest.player_exists(player_name) then
+				return false, S("You must enter a existing player name!")
+			end
 			return false, S("Player must be online to run this command!")
 		end
 	end,