                          Concept : Update-sequence

NAME
   Update-sequence - The order of events at the update

Level: Expert

This document gives a rough order of events during the update.

1) First, prepare all sectors in the world, row by row, going from top
        to bottom, left to right

        a) fallout is checked, if FALLOUT is defined
        b) guerrilla warfare is checked
        c) if the sector doesn't have the plague, see if it catches it
                otherwise plague the people
        d) if there are no civs or mil in the sector, it reverts to the deity
        e) taxes are collected from civs & uws. Mil are paid.
        f) if the sector is a bank it makes $$ proportional to its efficiency

2) Then, in order of country #, deal with each country:
        a) pay for military reserves.
        b) in order of set priorities, 1-39, 1 going first, then 2, etc.
                produce for owned sectors, maintain and build ships,
                planes and units; see below for details
        c) If ship maintenance is not yet done, do it now
                pay maintenance, produce, then feed and plague people on board
        d) If ship building is not yet done, do it now
                ships execute their orders right after building
                finally, if option SAIL is enabled, follow sail paths
        e) If plane maintenance is not yet done, do it now
        f) If plane building is not yet done, do it now
        g) If unit maintenance is not yet done, do it now
                pay maintenance, then feed and plague people on board
        h) If unit building is not yet done, do it now
        i) produce for all sectors that have not yet produced
                a) if the sector is a cap, it costs $$ equal to
                   the # of etus: np->nat_money -= etus;
                b) people in non-sanctuary sectors eat
                        1) If not enough is available, the sector
                                uses the supply routines to draw more.
                        2) If still not enough is available,
                                the excess people will starve off.
                                a) No more than 50% of the people
                                        in a sect can die;
                                        the uw's die first, then
                                        the civs, then the mil.
                c) if there was starvation, the work percentage is set
                        to 0, otherwise the work rate rises by
                        8+(1-15), max of 100
                d) population grows and is truncated
                e) sectors that are stopped are skipped (see info stop)
                f) first increase eff
                g) then make things

3) Then, do deliveries for all sectors in the world, row by row, going from
        top to bottom, left to right

4) Then, do exporting via distribution for all sectors in the world, row by
        row, going from top to bottom, left to right

5) Then, do importing via distribution for all sectors in the world, row by
        row, going from top to bottom, left to right

6) modify tech/res/hap/edu levels & do tech bleed
7) decrease levels due to passing of time
8) update war declarations (for slow war)

9) If MOB_ACCESS is not enabled, mobility is updated as follows:
   a) Add mobility to ships
   b) Add mobility to sectors
   c) Add mobility to planes
   d) Add mobility to land units

SEE ALSO
   Innards, Update

