Map generation is now working flawlessly... the origin point of the map is considered to be (0,0) with coordinate grid tiles being generated on the fly in both positive and negative directions with no limits. There is also a "fog of war".
I can now start working out how I want to place details on the map tiles and generating some other details like ground-cover type, bodies of water, and of course cities and towns.
You can test the basics of the map generation using the live web build at the usual address...
Use the TAB key to switch between the game screen and the map. Arrow keys will move the map camera. Drag and Drop the yellow circle around the map as your "discovery" range. This yellow circle simulates the player moving around and exploring the map.
~Sol