HexWorld
HexWorld a hexagon map example with code
...It also shows how to measure distances on this map and why the
hexagon way and measurement of distances is so superior.
It also shows that it is possible to place this grid on a simple coordinate system - x-y- axis. It is the first step - the creation of an interface that later might be used in a strategical game or whatever. Comes with Full Lazarus/Delphi Code. For Educational Purposes! Now new version 2020 with bugfixes.
Work hard and you will understand.