adding a npc to this script

[PewN]

how can i add a npc here that can buy a Vip using an item. then after he buy it the vip system will start!

//===== eAthena Script =======================================
//= VIP Rental System
//===== By: ==================================================
//= Brian
//===== Current Version: =====================================
//= 1.0
//===== Compatible With: =====================================
//= eAthena SVN (SQL only)
//===== Description: =========================================
//= Makes a player VIP (GM level 1) for a set amount of time.
//===== Additional Comments: =================================
//= 
//============================================================

function	script	F_VIPstart	{
set .@ticks, getarg(0); // getarg(0) = ticks (seconds)
if (.@ticks <= 0) {
	debugmes "F_VIPstart - tried to set a timer in the past";
	end;
}
// set a variable, #VIP_expire, as the Unixtime when this expires
set #VIP_expire, gettimetick(2) + .@ticks;
// add a timer with that tick (in case they stay logged in that long)
if (.@ticks < 2147483) { // prevent overflow error
	addtimer .@ticks *1000, "vip_rental::OnVIPend";
} else {
	addtimer 2147483000, "vip_rental::OnVIPcheck";
}
// change them to GM level 1
atcommand "@adjgmlvl 1 "+strcharinfo(0);
dispbottom "You now have access to VIP commands!";
return;
}

-	script	vip_rental	-1,{
OnPCLoginEvent:
if (#VIP_expire > gettimetick(2)) {
	// timer in future
	dispbottom "VIP Rental : expires in " + callfunc("Time2Str",#VIP_expire);
	atcommand "@adjgmlvl 1 "+strcharinfo(0);
}
OnVIPcheck:
if (#VIP_expire > gettimetick(2)) {
	if ((#VIP_expire - gettimetick(2)) < 2147483) { // prevent overflow error
		addtimer (#VIP_expire - gettimetick(2)) *1000, strnpcinfo(3)+"::OnVIPend";
	} else {
		addtimer 2147483000, strnpcinfo(3)+"::OnVIPcheck";
	}
} else if (#VIP_expire) {
	// timer already expired
	doevent strnpcinfo(3)+"::OnVIPend";
}
end;

OnVIPend:
// change them to GM level 0
atcommand "@adjgmlvl 0 "+strcharinfo(0);
set #VIP_expire, 0; // clear timer
dispbottom "Your VIP Rental has expired.";
end;
}

[Bin4ry]

Just put this script for your item script?

callfunc "F_VIPstart";

Edit: Misunderstood some part, hehs.

Just write your script like this to toggle your function script?

map,x,y,f     script     VIP     50,{
function F_VIPstart;
end;
}

Edited September 22, 2012 by darristan