Improve Memory Usage

[Goosius1]

• The sitting memory usage of provinces is high
• Improve it
• How ?
  • Consider perhaps a lazy-loading scheme:
  • province coords are not loaded from disk until they are needed
  • that data is removed from memory when it is no longer needed
  • How could we do this?
  • A
    • We could divide the map into a 50x50 grid.
    • That would be about 2500 files
    • In each file we would save all the coords in that area
    • We could call these "mapSlices"
    • If a map slice is not needed for a while, it is removed from memory
    • If a map slice is needed, for example, if a player wants to found a town or claim, the right one is loaded from memory
    • When a map slice is loaded, it stays for a while, like a minute, then it de-loads.