v3.02 bug with display of city fortify % after battleship bombardment

[windmilltilter]

In BtS v3.02 (I'm afraid to go to v3.03), I bombarded the city of Uppsala with my battleship. The log file scrolling message says "Your Battleship has reduced the defenses of Uppsala to 80%!", while the display under the city itself says "+48%":

I'm not sure which one is correct. Note that nothing else I (or any other computer player did) would have reduced the fortify % this turn besides that battleship bombardment. On subsequent turns, when I continue to bombard it, the display of the scrolling log % and the city % continue to be different.

Here's the save file for the beginning of that turn, so just move the nearest battleship over there (it might already be parked there, I don't remember) and bombard the city:

http://forums.civfanatics.com/uploads/87342/Jeffbo_AD-1965-January.CivBeyondSwordSave

Thanks,

Jeff

 

[Bhruic]

It's the city walls, I believe. They add to the defensive bonus of the city, but only apply to pre-Gun units. But bombardment still affects it.

Bh

 

[Roland Johansen]

The city probably has a castle which gives it a 100% defensive bonus. This bonus is reduced by 20% points by the battleship.

Because castles don't give their defensive bonus to post-gunpowder units, only the cultural bonus of 60% is actually used to defend against these units. This bonus is then reduced by a relatively similar amount: 12%/60%=20%/100%.

Personally, I would rather see the castle effect be totally removed when dealing with gunpowder units. In this case, the castle makes the city able to withstand 5 rounds of battleship bombardment instead of 3, while castles cannot be build anymore and are obsolete.

 

[windmilltilter]

So, would this be considered a bug, since one of these % numbers is wrong?

Thanks,

Jeff

 

[Bhruic]

Well, no, technically both numbers are correct. It depends on the intentions of the designers. Essentially, it's a question of whether artillery (from land or ships) should take walls/castles into considersation for bombardment. But whichever way it's decided, neither is "wrong", and hence the current way isn't a bug, it just looks odd. If you want a more demonstrative example of this, go to attack a city that has walls/castle with a mixture of pre- and post -gunpowder troops. Select the post- unit, and look at the defensive rating. Then select the pre- unit. You'll note that the defensive rating goes up for the pre- unit, because it's affected by the walls/castle, where the post- unit is not. That's the same thing you are seeing with bombardment damage. Because the unit you are selecting is a post-gunpowder unit, it doesn't "see" the defensive bonuses granted by the walls/castle, but when bombarding, those are factored in, which is why you see a different number.

Bh