[R&F] AI Nuking only one city repeatedly

nauberry

Warlord
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Has anyone else noticed the issue, that when AI uses nukes, it only nukes one city over and over again? I Think this might be a bug in the code, as on my recent deity game Greece has bombed my city each turn with three nukes, even though there are many other cities near by they could wipe off the map as well.
 
Bug? That's the civ 6 AI for ya'.

Unless the entire AI is considered a bug... :rolleyes:
On my last game the AI was bale to conquer three cities, including the capital from the Arabian empire, even though there was a huge sea between. This was on Deity, but the AI really puts up a decent fight. The problem was, that even though the Greek had maybe 10 nukes and 10 thermal nukes they used them all on one city, that I conquered from them. They had nuclear submarines near my continent, but yet they didn't drop a single one there.
 
I've never seen the AI use nukes, but this bug amuses me for some reason.
 
The AI displays the same behaviour related to strategic bombing.

I believe what's going on is it has an objective to capture the city, and the bombers are deployed towards attacking that city. The decision to send the bombers to attack the city, however, does not depend on the health of the city. So a zero heath city gets continually bombed, turn after turn, until the AI's land forces capture it or the AI gives up on the city as a target.

I'm guessing the same issue is at play with the nuking.
 
The AI displays the same behaviour related to strategic bombing.
I believe what's going on is it has an objective to capture the city, and the bombers are deployed towards attacking that city. The decision to send the bombers to attack the city, however, does not depend on the health of the city. So a zero heath city gets continually bombed, turn after turn, until the AI's land forces capture it or the AI gives up on the city as a target.
I'm guessing the same issue is at play with the nuking.
I disagree with the strategic bombing part - proof is here https://forums.civfanatics.com/threads/real-strategy.640452/page-4#post-15338899
As for Nukes - as I wrote in AI thread - each operation is a separate one. Same for "Nuclear Assault". It may very well happen that AI will nuke other cities that it is actually trying to capture. That is what I observed - there was no attack, just nuke after nuke.
As usual, I suspect the culprit is BH node "Operation Change Target". The purpose of it is: "As part of an operation, if you can't take the current target, find a new one or give up." As you can clearly see - the condition is NOT fulfilled because after nuking you CAN take a city (after thermo there is nothing stopping you around). So, there is no need to change the target and AI will nuke it until it is captured. And since it doesn't want to... well... the result is obvious.
I will make some tests during the weekend to see if removing that node from the tree will change things. The tree should finish and after restart select a new target from the stratch.
 
I disagree with the strategic bombing part - proof is here https://forums.civfanatics.com/threads/real-strategy.640452/page-4#post-15338899
As for Nukes - as I wrote in AI thread - each operation is a separate one. Same for "Nuclear Assault". It may very well happen that AI will nuke other cities that it is actually trying to capture. That is what I observed - there was no attack, just nuke after nuke.
As usual, I suspect the culprit is BH node "Operation Change Target". The purpose of it is: "As part of an operation, if you can't take the current target, find a new one or give up." As you can clearly see - the condition is NOT fulfilled because after nuking you CAN take a city (after thermo there is nothing stopping you around). So, there is no need to change the target and AI will nuke it until it is captured. And since it doesn't want to... well... the result is obvious.
I will make some tests during the weekend to see if removing that node from the tree will change things. The tree should finish and after restart select a new target from the stratch.
Interesting results, my observations back this, as they were constantly trying to get units on my occupied Greek area, but I killed them before they could take the city back. In the other hand they had a lot of mech armies, and could have taken it back with a more coordinated approach. The city had Statue of liberty, which was pillaged after the nuke and I was starting to loose loyalty on all nearby cities, so I don't know if that was a part of their tactic.
 
i wish the ai was capable of waging nuclear war on me. I'd love a bit of MAD in my games.
 

I shouldn't have said "strategic bombing". I haven't actually seen the AI bomb districts that are already destroyed.

I was talking about bombers being used against city centres to destroy their walls and health. That I have seen the AI continue to bomb, repeatedly, turn after turn, even when the city is at zero. I presume the AI is trying to capture the city and these bombers have been allocated to that operation, so by golly they're going to bomb!
 
@Trav'ling Canuck If there are no melee units around the city, this could result in such a behavior I suppose. But the op team always has a few melee units, so they all need to die first :)

Yes, when I've seen it, the city was remaining unconquered due to a lack of occupying forces.

If a city is being nuked multiple times, it made me wonder if the same thing was happening: that the nuking was in support of a capture attempt, and the melee units weren't in a position to take the city, so the nukes kept coming.
 
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