[Freeciv] connecting cities with roads

[nicholas.g.lawrence@xxxxxxxxxxxxxxxxxxxx]

May I suggest this formula?

For a land tile, to find how much it wants to build a road for the purpose
of connecting cities in a road network.

distance is measured in land tiles

want = (1/distance to nearest city) + (2/distance to 2nd nearest city) +
..... + (n/distance to nth nearest city)

Obviously, this formula has to be recalculated every time a city is added
or removed from a continent.

This method will not deliver the most efficient network, but should be
quite robust at filling gaps
and routing around enemy units.

nick



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