HOI4 Dev Diary - Bag of Tricks : the Sequel

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Arheo

Game Director - Hearts of Iron
Paradox Staff
Feb 13, 2018
1.176
22.010
Greetings all!

Today’s dev diary contains the details of a few smaller features coming to the table in No Step Back. In addition, I’ll get ahead of the curve here and point out that there will be no diary next week - we’ll be back the week after with more to see.

Scorched Earth

One of the enduring tactical practices of the Soviet defense during the German invasion, was the use of scorched earth. In No Step Back, you’ll be able to spend Command Power on ordering the strategic disabling of railways in the event of a tactical retreat.

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(All visuals WIP!)

Enacted on a state level, every railway present receives full damage, and is immediately flagged, making sure that your eager workers do not attempt repairs.

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The pending repairs will show up differently in your construction queue, and won’t be worked on. Rather than re-enable these all manually, you can toggle the state of Scorched Earth off on a state, in the same way it was enabled. All affected railways will begin repairing at once.

Scorched Earth is a pretty simple mechanic here, but has potentially devastating effects on invaders. In addition to the rail conversion time that exists on captured railway, damaged rail must now be repaired in order to continue supply flow onwards. While we considered extending some effects to factories, we determined that this was likely to affect balance far more than we wanted.

Preferred Tactics

We touched on this feature briefly during a previous diary, however, due to some good feedback from the community and from inside the team, we’ve made some alterations to how it works.

Where previously, you set a preferred tactic on a national level, giving a positive chance modifier for that tactic to be chosen in combat, your generals and field marshals will now also possess the ability to earn a favored combat tactic.

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At level 5, you’ll be prompted to choose a preferred tactic for your generals. This represents their doctrinal school of war - a choice that affects all units under their command.

Note here, that we are not removing the national preferred tactic, and that the additive weight will compound from national -> field marshal -> general. To pre-empt the question, you can of course stack all 3 as the same tactic, although this drastically reduces your flexibility, and potentially makes it very easy to be countered. The overall additions granted by preferred tactics, have of course been reduced somewhat to account for this.

We wanted to avoid a rock-paper-scissors choice here, and in order to further emulate the core, doctrinal nature of a general’s fighting style, we have chosen to make this choice permanent for characters.

Strategic Redeployment

As we hinted at, strategic redeployment will now make use of railways in order to simulate more realistic army relocation. This applies a different weighting to the regular pathfinder, resulting in choices that largely look sensible where routes of a similar weight are encountered.

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Here, we take a train followed by a scenic bus-tour in order to avoid the long connection.

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Sometimes it becomes difficult to predict what will be considered 'sensible' in every scenario - there will be edge cases where pretty looking behaviour and logical behaviour do not overlap.

That’s all we have for today’s diary - just a final reminder that next week there will not be a dev diary - tune back in on the 29th!

As usual, I’ll be around to answer questions in the thread below!

/Arheo
 
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Strategic Redeployment using railways is dreamlike. But what happens in areas with no trains or damaged railways? Will the pathfinding and speed work the same?
yes, there are separate speed calculations for both the current rail level and the current infrastructure level. The pathfinder will work out which is the fastest route based on both these speeds so if there are no railways between 2 points but there are varying levels of infrastructure it will still find the fastest path.
 
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Will we have a diary on the 29th that's long enough for it to be worth TWO dev diaries (to cover next week) or is it gonna be a diary we're never getting?

It'll be as long as a piece of string.

Wait. So workers will not repair railways during conversion? Sounds strange...

They will - but a converted railway is not dependent on construction queue or capacity, whereas repairs are.

Will the AI even be able to use Scorched Earth? That looks suspiciously like a player only feature :confused:

Yes. They err not to unless prompted atm, otherwise every war turns into a slog, but we have our eyes on it.
 
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So, now there's no longer strategic redeployment between provinces not connected by train or is it just slower? They mention "scenic bus-tour" so I dunno

There is, it is just slower, and therefore will only be considered when a train route is notably longer.

I don’t like that scorched earth icon. It’s too bright and looks out of place with everything else... Surely that’s not what we are going with?

Will scorched earth apply for China also or is it a Soviet only feature?

As hinted at in the comment under the picture, visuals are placeholder only. All countries have learned the arts of blowing up railways.
 
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