NPCs and Interactions - Mastering Unity 2D Game Development - page 248

},

};

As we are now using a struct method for our destination information, we also need to
update the GetRouteInfo method to access the dictionary correctly and return the
routes' description if found; we do this using the following code:

public static string GetRouteInfo(string destination)
{

return RouteInformation.ContainsKey(destination) ?
RouteInformation[destination].RouteDescription :
null;

}

With that in place, all we need to do is check whether the CanTravel flag is true when
the system requests, and if you're allowed to travel, update the CanNavigate method
with the following code:

public static bool CanNavigate(string destination)
{

return RouteInformation.ContainsKey(destination) ?
RouteInformation[destination].CanTravel :
false;

}

Here, we simply look at the destination from our route information and return with in-
formation on whether the player is allowed to travel there or not.

Now, when you try to go to the cave, you won't get the prompt from NavigationMan-
ager whether you want to travel to it or not.

To finish off, we just need to get the Greybeard NPC to listen for the message that the
player will leave and then start his most troublesome conversation. So, remove the Mes-
sagingClientReceiver script (that was created in the Messaging section) from the
left border (the cave) that you set up earlier and add it to the Greybeard NPC game object.

Now, Greybeard is subscribing to and receiving the messages for the player leaving. Next,
update the MessagingClientReceiver script (in the Messaging folder under