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HOI4 Dev Diary - Airplanes and Lootboxes

Hi everyone! Today’s diary is sort of a logical continuation on the 1.4 “Oak” updated where we did a full revamp on the air interfaces and much of the underlying combat mechanics. So lets dive into some more air stuff!

Attaching air wings to armies
It's now possible to attach air wings directly to armies. This means that if you assign them to an army pushing into a hostile nation those wings will get automatically move to bases in range and assigned to areas the army is fighting in. This should hopefully mean no more accidentally forgetting your air force in france when you move forces up to the russian front in hectic multiplayer games or needing to manage things manually when crossing into new areas under an advance.
Assigned wings show over armies in air mapmode (you can’t attach to army groups) for easy check on how your attached air forces situation is. We show them in 3 groups: Fighters, Close Air support/tactical bombers and Transports for supply. You can’t attach strategic bombers, because, well, having planes on order to destroy the area you move through is generally not good. You can also quickly select those planes in each group which makes sending them around and rebalancing easy and quick.
Attaching is a free feature for everyone as part of the 1.5 “Cornflakes” update. The rest of the diary will cover features in the upcoming (and still unannounced. Trust me I’m itching to tell!) DLC.
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Air Supply
Ever had your troops encircled and out of supply and wished there was some way to help them out? Now you can assign your transport planes to bring supply across enemy lines. Each plane assigned to a strategic area will boost supply in supply areas there. These planes can be intercepted as any other mission resulting in less supply, and destroyed planes. Air supply is designed to be a costly thing that you only want to use at a smaller scale, or to adjust minor supply problems. To ensure this we are rebalancing transport planes a bit so you will need a lot more of them (although with reduced costs as their “air fleet” status right now works badly with being intercepted) and air supply being a logistically tricky affair will require tying up new country resource to work. More info on that in a later diary though when we can show the whole picture. What is important here is that it's hard to use this at a large scale, and that it will come with some trade-offs.
supply_mapmode.png

(German planes delivering loot-boxes in a totally not-artificial at all situation of troops trapped in the middle of Poland)

To make it easy to identify where to send your transport planes on supply missions the air mapmode now has a special indicator showing areas with a supply need where planes could be assigned. If you are over supplying them through the air this is also shown, so that you may want to withdraw some of your wings.
supply_mapmode_2.png



Prioritization for strategic bombing
Players can now affect target selection for strategic bombers. The way it works is that you mark your prioritized targets when picking the strategic bombing mission. Those building types selected will have a higher chance of being targeted compared to others. Bombing isn't the most exact process and we felt it would be weird if you could completely control what doesn't get hit etc. So instead we decided on a system where you can somewhat affect it, but won't be able to walk into an area with all refineries destroyed but pristine infrastructure and factories.
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We also have one more air related feature as part of the DLC, but we will be showing that off in a future diary where it fits in better with the content there ;P

Next week is a diary I have been looking forward to - we are going to explain what that new topbar button does that you may have spotted in screenies :)

PS. The second episode of our beginner-stream with @Da9L and @bus is coming any second now. Even though most of you are probably familiar with the basics, this is perfect for any friends that want to join in. Check out the Paradox twitch today at 16:00 CET: https://go.twitch.tv/paradoxinteractive
 
The gavel and block must mean executive orders (for democracies) or national directives (for non-democracies). They will probably consist of boosts for specific things like national policies in EU4.
 
Seriously? This paid DLC feature was free in previous HoI games and that's why they are better than the CK2 team?
If you can call buying the game "free". It is not as simple as just copy and paste hoi3 then adding new feature. It is hard choice balancing between making new things and re-implement old feature. You are not rob of the old feature. It been trade for something else. Unless you want an exact copy of hoi3 and everything that made hoi4 a hoi4 in a paid DLCs.
 
Holy cow people everyone already knows what was and wasn't in HoI3 and how poorly all of it was implemented. If you want to play it literally no one cares or is stopping you.

How about that those features also were implemented in HoI2 and worked pretty well there?
 
I'm excited for attaching planes to armies. I suspect using battle planner and lines will become more common with the next patch due to all the handy features baked into it. Is there a feature planned to allow players to prioritize airfield access for air units attached to a particular army? I'm gonna be more concerned about keeping my armor supporter and moving fast than my infantry, and that implies I'd want their air units to have priority access to newly captured airfields.

Air supply should be in interesting. Does it work for any sort of low supply scenario or only for cut off units?
 
Damn, just yesterday someone was complaining transports are useless.
Anyways, I already had an supply-area selection algorithm in mind that Paradox can implement to reduce micromanagement.

In a given airzone, active transport planes will automatically deliver supplies to X supply zone based on a priority list:
1. Cut off areas>Areas with connection to capital, this is self evident, as they need supply most badly.
2. If there are multiple areas cut off, then Areas with access to airports>Areas without, the efficiency of supply should be far higher if transports can land instead of dropping lootboxes.
3. Areas with highest average value of divisions, this value can be precalculated based on division design (more tanks=more production cost=more value) to save calculation time. If an elite panzer division is trapped vs some pure infantry, always supply the panzer.

This reduces the need to constantly click and reselect which supply areas to supply, which was an issue in HOI3.
It is also computationally inexpensive, this looks like a simple sorting algorithm that needs be run perhaps once per week (maybe add a button to automatically assign zones).
 
After announcement of the expansion. I've kept all that on hold so we dont show off the theme before the announcement.

Did I read correctly the "Communist focused Expansion"?
 
i can't believe only now can we use TRANSPORT plane to transport supply even though all equipment and supplies can be airdrop into the battlefield. i've been waiting for this ever since i start playing
 
How about that those features also were implemented in HoI2 and worked pretty well there?
It's a completely different engine. Completely different code. Written for completely different CPU architectures and so on and so forth.
"Features" in a game (or any Computer application) aren't like furniture in your home. You can't take stuff with you when you move to a new condo.
A lot of stuff for each PDS title is written from scratch (and yes copy-pasting code between applications IS a very very bad idea).
Every feature in any new application requires development-time, no matter if it's been present in previous games or not.

If PDS would go back and release a DLC for HOI2 with equipment production like in HOI4 you probably wouldn't find it strange if there was a price-tag attached to it. And neither are features in HOI4 (even if they're present in other games or not).
 
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Great diary cant wait to play with the new features.
Will the AI make use of the attached airwings to armies? And will it balabce not to have all its planes in one airfiled?