From TDN

//////////////////////////////////////////////////
// Camera follow
//////////////////////////////////////////////////

if (!isObject(CameraFollow)) 
{
   %template = new BehaviorTemplate(CameraFollow);
   %template.friendlyName = "Camera";
   %template.behaviorType = "CameraFollow";
   %template.description = "Makes the camera follow this object within another object.";

   %template.addBehaviorField(objectInfo, "The object to keep camera within to get info from.", object, "", t2dSceneObject);
}

function CameraFollow::onBehaviorAdd(%this) 
{
   %this.schedule(100, "setWIndowLimit");
   sceneWindow2D.startCameraMove();

}

function CameraFollow::setWindowLimit(%this)
{
   sceneWindow2D.setViewLimitOn(%this.objectInfo.getArea());
   sceneWindow2D.mount(%this.owner);
}