How to add quest delay? or NPC talk delay per character

[Nero]

Example I want to get item to one npc and it will require 1 hr again to get or talk to him. (Timer will count even you log out)

Thanks!!

[Emistry]

prontera,155,181,5	script	Sample	4_F_KAFRA1,{
	
	if (gettimetick(2) > #COOLDOWN_REWARD) {
		#COOLDOWN_REWARD += (gettimetick(2) + 60); // 60 seconds.
		getitem 512, 1;
		getitem 512, 2;
		getitem 512, 3;
	}
	mes "You obtained rewards, come back again after "+(#COOLDOWN_REWARD - gettimetick(2))+" seconds.";
	close;
}

if you're using the quest system then you can use this to check the duration.

checkquest(<quest_id>, PLAYTIME, 2)