From 1e832e7bbbe34a755a7c86de2006c2682600b45a Mon Sep 17 00:00:00 2001
From: Philip Rosedale <philip@highfidelity.io>
Date: Fri, 24 Oct 2014 16:38:24 -0700
Subject: [PATCH] Tour guide script

---
 examples/guidedTour.js | 47 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 examples/guidedTour.js

diff --git a/examples/guidedTour.js b/examples/guidedTour.js
new file mode 100644
index 0000000000..fe31e1db30
--- /dev/null
+++ b/examples/guidedTour.js
@@ -0,0 +1,47 @@
+//
+//  TourGuide.js 
+// 
+//  This script will follow another person, if their display name is "Tour Guide"
+// 
+var leaderName = "Tour Guide";
+
+var guide; 
+var isGuide = false;
+var lastGuidePosition = { x:0, y:0, z:0 };
+var MIN_CHANGE = 2.0;
+var LANDING_DISTANCE = 2.0;
+var LANDING_RANDOM = 0.2;
+
+function update(deltaTime) {
+
+    if (Math.random() < deltaTime) {
+        guide = AvatarList.avatarWithDisplayName(leaderName);
+        if (guide && !isGuide) {
+        	print("found a guide!");
+        	isGuide = true;
+        } else if (!isGuide) {
+        	print("Lost My Guide");
+        	isguide = false;
+        }
+    }
+
+    if (guide) {
+    	//  Check whether guide has moved, update if so
+    	if (Vec3.length(lastGuidePosition) == 0.0) {
+    		lastGuidePosition = guide.position;
+    	} else {
+    		if (Vec3.length(Vec3.subtract(lastGuidePosition, guide.position)) > MIN_CHANGE) {
+    			var meToGuide = Vec3.multiply(Vec3.normalize(Vec3.subtract(guide.position, MyAvatar.position)), LANDING_DISTANCE);
+    			var newPosition = Vec3.subtract(guide.position, meToGuide);
+    			newPosition = Vec3.sum(newPosition, { 	x: Math.random() * LANDING_RANDOM - LANDING_RANDOM / 2.0, 
+    													y: 0, 
+    													z: Math.random() * LANDING_RANDOM - LANDING_RANDOM / 2.0 });
+    			MyAvatar.position = newPosition;
+
+    			lastGuidePosition = guide.position;
+    			MyAvatar.orientation = guide.orientation;
+    		}
+    	}
+    }
+}
+Script.update.connect(update);
\ No newline at end of file