You can use the Dynamic Shop NPC Made by Lunar
//Made by Lunar
//Version 1.6
//6.1.09
- shop quest_shop -1,501:50
prontera,147,173,5, script Dynamic Shop NPC 899,{
set @i,0;
mes "[shop Quest NPC]";
mes "Which item do you wish to obtain?";
mes "Select only one.";
callshop "quest_shop",1;
npcshopattach "quest_shop";
end;
OnBuyItem:
if(.BuildQuest) {
for(set .e,0; !compare(getarg(.e+1),"Zeny"); set .e,.e+2) {}
npcshopadditem "quest_shop",getarg(.e+2),getarg(.e)*compare(getarg(.e+1),"SZeny");
setarray .Shop[.i],getarg(.e+2);
set .i,.i+1;
goto Quest_Setup;
}
if(.Shop[@i]
[email protected]_nameid) for(set @i,1; 1; set @i,@i+1) if(.Shop[@i]
[email protected]_nameid) { set .i,@i; callsub Quest_Setup; }
for(set @i,1;
[email protected]; set @i,@i+1) if(.Shop[@i]
[email protected]_nameid) { set @e,1; set .i,@i; callsub Quest_Setup; }
mes "[shop Quest NPC]";
mes "I require the following:";
for(set @i,0; !compare(getarg(@i+1),"Zeny"); set @i,@i+2) mes "^FF0000" + ((countitem(getarg(@i))>=getarg(@i+1))? "^00FF00":"") + "" + getarg(@i+1) + " " + getitemname(getarg(@i)) + " [" + countitem(getarg(@i)) + "/" + getarg(@i+1) + "]";
if(getarg(@i)) mes "^FF0000" + ((Zeny>=getarg(@i))? "^00FF00":"") + "" + getarg(@i) + " Zeny";
mes "^000000In exchange, I will give you:^0000FF";
for(set @i,@i+2; getarg(@i+1,0); set @i,@i+2) mes getarg(@i+1) + " " + getitemname(getarg(@i));
switch(select("Exchange:" + (((((getiteminfo(@bought_nameid,5) & 1) || (getiteminfo(@bought_nameid,5) & 256) || (getiteminfo(@bought_nameid,5) & 512)) && @equip==0))? "Preview Item":"") + ":No thanks")) {
case 1:
for(set @i,0; !compare(getarg(@i+1),"Zeny"); set @i,@i+2) if(countitem(getarg(@i)) < getarg(@i+1)) {
next;
mes "You have " + countitem(getarg(@i)) + " " + getitemname(getarg(@i)) + ", while I require " + getarg(@i+1) + ".";
mes "Please obtain ^FF0000" + (getarg(@i+1)-countitem(getarg(@i))) + " more " + getitemname(getarg(@i)) + "^000000.";
close;
}
if(Zeny < getarg(@i)) {
next;
mes "You do not have enough Zeny.";
mes "Please obtain ^FF0000" + (getarg(@i)-Zeny) + " more Zeny^000000.";
close;
}
for(set @i,0; !compare(getarg(@i+1),"Zeny"); set @i,@i+2) delitem getarg(@i),getarg(@i+1);
set Zeny,Zeny-getarg(@i);
for(set @i,@i+2; getarg(@i+1,0); set @i,@i+2) getitem getarg(@i),getarg(@i+1);
if (compare(getarg(@i,0),"announce")) announce strcharinfo(0) + " has just obtained " + getitemname(@bought_nameid) + "!",bc_all;
close;
case 2:
set @bottomview, getlook(3);
set @topview, getlook(4);
set @midview, getlook(5);
addtimer 1000, strnpcinfo(3)+"::On_Leave";
set @equip,getiteminfo(@bought_nameid, 5);
set @view, getiteminfo(@bought_nameid, 11);
if(@equip != -1 && @view > 0) {
if(@equip & 1) atcommand "@changelook 3 " + @view;
if(@equip & 256) atcommand "@changelook 1 " + @view;
if(@equip & 512) atcommand "@changelook 2 " + @view;
}
next;
goto OnBuyItem;
case 3:
close;
}
On_Leave:
atcommand "@changelook 1 " + @topview;
atcommand "@changelook 2 " + @midview;
atcommand "@changelook 3 " + @bottomview;
set @equip,0;
set @view,0;
set @topview,0;
set @midview,0;
set @bottomview,0;
end;
OnInit:
npcshopitem "quest_shop",0,0;
set .BuildQuest,1;
set .i,1;
Quest_Setup:
switch(.i) {
default: set .BuildQuest,0; set .e,0; set .i,0; end;
case 1: callsub OnBuyItem,50,"SZeny",501,1,"announce";
case 2: callsub OnBuyItem,502,1,0,"SZeny",502,1;
case 3: callsub OnBuyItem,502,1,1000,"Zeny",504,1,501,1;
case 4: callsub OnBuyItem,923,20,1000,"SZeny",2284,1,501,1,"announce";
}
}
Walking through a setup:
Requirements:
4 Pencil Cases [iD: 738]
2 Slick Paper [iD: 7111]
10000 Zeny
Reward:
1 The Paper Card [iD: 4172]
So, let's pretend this is your 5th quest, you'd start off as such:
CODE
case 5: callsub OnBuyItem,
Next, you would add in the first requirement: 4 Pencil Cases [iD: 738]:
CODE
case 5: callsub OnBuyItem,738,4,
Next, you would add in the second requirement: 2 Slick Papers [iD: 7111]:
CODE
case 5: callsub OnBuyItem,738,4,7111,2,
That is the last of your item requirements, so lets add the Zeny Requirement now: 10000 Zeny:
CODE
case 5: callsub OnBuyItem,738,4,7111,2,10000,"Zeny",
Now, you add the prize: 1 The Paper Card [iD: 4172]:
CODE
case 5: callsub OnBuyItem,738,4,7111,2,10000,"Zeny",4172,1
Now to make sure the server reads this is a line, you need to end the line with a semi-colon (";"):
CODE
case 5: callsub OnBuyItem,738,4,7111,2,10000,"Zeny",4172,1;
We have just created a custom quest.
GM Takumirai's post in How to make a Custom OBB, or OCA was marked as the answer