[Freeciv-Dev] Trading units

[Kris Bubendorfer <Kris.Bubendorfer@xxxxxxxxxxxxx>]

Here is the patch to allow players to give units in diplomatic treaties.

1.  Due to security constraints, only the owner of units can offer them as a 
treaty clause.  This is different from trade cities, where the non owner can 
request cities visible to them.

2.  You cannot give spies or diplomats - that would never happen in reality.

3.  If a unit from a city is `gifted', then it is transferred to the closest
    city owned by the other party.  That city also becomes it's homecity.

    If a unit in the field is `gifted', then it remains in exactly the 
    same place on the map, and the home city is the closest city owned 
    by the other party. 

4.  Identification of units.  This is hard, and as a consequence Civ2 only
    allows you to give units from inside cities.  However this patch lets
    you select any non diplomatic unit, and each unit name is extended
    to include a rough form of identification eg:

    Riflemen in Piraeus
    Partisan near Athenae 

    If you have three riflemen in Piraeus, then it is a lottery as to
    which one you intended.

5.  There are also a couple of fixes for trade cities.  Mostly about
    neatness.  The significant one is that cities specified in 
    clauses do not lighten the map, UNTIL they change ownership.  This
    is the same for units outside cities.

units_cap.dif
Description: units_cap.dif

Cheers Kris...