Concurrency fix + new scripts

Fixed some situation involving concurrency upon using getCharacters()
from MapleMap, added scripts and other bug fixes.

scripts/npc/world0/2101013.js

@@ -0,0 +1,42 @@
+/* Author: aaroncsn(MapleSea Like)
+	NPC Name: 		Karcasa
+	Map(s): 		The Burning Sands: Tents of the Entertainers(260010600)
+	Description: 		Warps to Victoria Island
+*/
+var towns = new Array(100000000,101000000,102000000,103000000,104000000);
+
+function start() {
+	status = -1;
+	action(1, 0, 0);
+}
+
+function action(mode, type, selection) {
+	if (mode == -1) {
+		cm.dispose();
+	} else {
+	if (status == 0 && mode == 0) {
+		cm.sendNext("Aye...are you scared of speed or heights? You can't trust my flying skills? Trust me, I've worked out all the kinks!");
+		cm.dispose();
+		return;
+	}
+	if (mode == 1)
+		status++;
+	else
+		status--;
+	if(status == 0){
+		cm.sendAcceptDecline("I don't know how you found out about this, but you came to the right place! For those that wandered around Nihal Desert and are getting homesick, I am offering a flight straight to Victorial Island, non-stop! Don't worry about the flying ship--it's only fallen once or twice! Don't you feel claustrophobic being in a long flight on that small ship? What do you think? Are you willing to take the offer on this direct flight?");
+	} else if(status == 1){
+		cm.sendAcceptDecline("Please remember two things. One, this line is actually for overseas shipping, so #rI cannot gurantee exactly which town you'll land#k. Two, since I am putting you in this special flight, it'll be a bit expensive. The service charge is #e#b10,000 mesos#n#k. There's a flight thats about to take off. Are you interested?");
+	} else if(status == 2){
+		cm.sendNext("Okay, ready to takeoff~");
+	} else if(status == 3){
+		if(cm.getMeso() >= 10000){
+			cm.gainMeso(-10000);
+			cm.warp(towns[Math.floor(Math.random() * towns.length)]);
+		} else{
+			cm.sendNextPrev("Hey, are you short on cash? I told you you'll need #b10,000#k mesos to get on this.");
+			cm.dispose();
+			}
+		}
+	}
+}