Multi World NPCs + patch on Player interactions

Made NPCs now work properly on multiworld system. Solved multiple issues
regarding Player Shops not giving back items properly when owner exits.
Added restriction on changing channels at FM rooms, preventing shop
owner entering Cash Shop.

scripts/npc/2100009.js

@@ -0,0 +1,60 @@
+/* Author: aaroncsn (MapleSea Like)
+	NPC Name: 		Aldin
+	Map(s): 		The Burning Road: Ariant(2600000000)
+	Description: 	Ariant Plastic Surgery
+*/
+
+var status = 0;
+var beauty = 0;
+var mface = Array(20000, 20001, 20002, 20003, 20004, 20005, 20006, 20007, 20008, 20012, 20014);
+var fface = Array(21000, 21001, 21002, 21003, 21004, 21005, 21006, 21007, 21008, 21012, 21014);
+var facenew = Array();
+
+function start() {
+	status = -1;
+	action(1, 0, 0);
+}
+
+function action(mode, type, selection) {
+	if (mode == -1) {
+		cm.dispose();
+	} else {
+		if (mode == 0 && status == 0) {
+			cm.sendNext("I see...take your time, see if you really want it. Let me know when you make up your mind.");
+			cm.dispose();
+			return;
+		}
+		if (mode == 1)
+			status++;
+		else
+			status--;
+		if (status == 0) {
+				facenew = Array();
+				if (cm.getChar().getGender() == 0) {
+					for(var i = 0; i < mface.length; i++) {
+						facenew.push(mface[i] + cm.getChar().getFace()
+ % 1000 - (cm.getChar().getFace()
+ % 100));
+					}
+				}
+				if (cm.getChar().getGender() == 1) {
+					for(var i = 0; i < fface.length; i++) {
+						facenew.push(fface[i] + cm.getChar().getFace()
+ % 1000 - (cm.getChar().getFace()
+ % 100));
+					}
+				}
+				cm.sendYesNo("If you use the regular coupon, your face may transform into a random new look...do you still want to do it using #b#t5152029##k?");
+			}
+		else if (status == 1){	
+			cm.dispose();
+			if (cm.haveItem(5152029) == true){
+				cm.gainItem(5152029, -1);
+				cm.setFace(facenew[Math.floor(Math.random() * facenew.length)]);
+				cm.sendOk("Enjoy your new and improved face!");
+			} else {
+				cm.sendNext("Um ... it looks like you don't have the coupon specifically for this place...sorry to say this, but without the coupon, there's no plastic surgery for you.");
+			}
+		}
+	}
+}