doesnt work anymore because of the update in npc_shop_discount() **** BUT MANAGE TO FIX JUST COMMENT THAT ONE
old : bool npc_shop_discount(enum npc_subtype type, bool discount) {
new : bool npc_shop_discount( struct npc_data* nd ){
manage to fix i guess just comment out this one.
//nd->u.shop.discount = is_discount > 0; << THIS ONE