Check item will pop up an npc msg

[Dolphin86]

hi i did some google but i cant really found any in rathena, here is the situation:

 1. when a player gather an item, and he achieve gathering in amount of 100 of the item in his inventory, an npc msg will suddenly pop up, like congratulation you have gather 100 of apple, here is your reward ( anything will do i will edit it anyways) and then 100 of his apple will be deleted and he will get 1 item as reward in his inventory..

also this effect in all map.

thanks!  

[Winterfox]

You can achieve that by using the achievement system: https://github.com/rathena/rathena/blob/master/doc/achievements.md