This routine will add the Vikings that have been summoned by your alliance to the cache.


It will visit the list of summoned Vikings every Interval, scan the list, and visit each Viking to determine the location.  All Vikings that are found are added to the cache.


You can filter the Difficulty level required with the Difficulty setting. Any Vikings of that type are visited and others are ignore.


You can also filter Vikings of a specific level with the slider. For example, to cache only Vikings of Level 10  to 50.


The internal cache is how long a specific Viking is remembered for and not revisited.