Hearts of Iron IV - Developer Diary 9 - Vacation and Air tech

Hearts of Iron IV - Developer Diary 9 - Vacation and Air tech

  • Crusader Kings III Available Now!

    The realm rejoices as Paradox Interactive announces the launch of Crusader Kings III, the latest entry in the publisher’s grand strategy role-playing game franchise. Advisors may now jockey for positions of influence and adversaries should save their schemes for another day, because on this day Crusader Kings III can be purchased on Steam, the Paradox Store, and other major online retailers.


    Real Strategy Requires Cunning

podcat

Oberkommando HOI4
Super Moderator
12 Badges
Jul 23, 2007
12.610
30.928
  • Hearts of Iron III
  • Semper Fi
  • 500k Club
  • Europa Universalis III: Collection
  • Europa Universalis IV: Pre-order
  • Hearts of Iron II: Beta
  • Europa Universalis: Rome Collectors Edition
  • Mount & Blade: Warband
  • Paradox Order
  • Hearts of Iron IV Sign-up
  • Hearts of Iron IV: Together for Victory
Hello guys and gals! Most of the HOI4 team is currently on a much needed summer vacation, but we figured we couldn't just leave you hanging without a diary this month, so let's get to it *puts down beer* *cracks knuckles*.

The Air Technology tree is similar to the Armor tech tree we showed back in diary 2 in that we are focusing around chassis and unlocking specific historical equipment/models that those versed in WWII will be familiar with.
Hearts of Iron III had a lot of different airplane classes but that still ended up not being able to match what nations historically did with their planes, which was use them for many different roles. In HOI4 we have gone the other way and dropped a few classes while instead letting you specialize them in the direction you want to go yourself using field experience (see Diary 8 for more details). This means that Interceptors, CAG (Carrier Air Group) and Multi-Role from HOI3 are gone and its up to you to decide what models to tailor for each role. Do you specialize to create the perfect plane for a role, or try to develop a fighter that can fulfil all your different fighter/interceptor/escort needs for ease of production?

dd9_mustang.png


Air technology is split up around 3 airframe sizes: Light, Medium and Heavy. Light is single engine while mediums are generally twin engine and Heavy have 4 engines or more. After the invention of Jet engines it's also possible to research powerful jet models. Each of the light airframe techs also has a sub-tech that unlocks a carrier capable model. We felt that extra research investment was necessary for this because of the trouble many nations had with perfecting their carrier-based planes. This also highlights another important change from HOI3 - instead of the CAGs you are free to put any planes that are capable on your carriers and thereby configure their capabilities for different types of missions. There are also experimental rocket interceptors available, but they live among the Secret technology tree so we will talk about those later.

dd9_us_airtech.jpg


That's all for now folks, time to get back to the beer! Next diary is probably going to be about the naval aspects of the game.

oops, I almost forgot we promised to include a picture of one of Darkrenown's dogs. Here is Domino testing out the new naval invasion code for HOI4:
P9120275.jpg
 
Last edited by a moderator:
  • 13
  • 1Like
  • 1
Reactions:

history2013

Private
47 Badges
May 19, 2013
13
2
  • Cities in Motion
  • Europa Universalis IV: Pre-order
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
  • Europa Universalis IV: Res Publica
  • Hearts of Iron III Collection
  • Hearts of Iron III: Their Finest Hour
  • Europa Universalis IV: Call to arms event
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis III Complete
  • Europa Universalis III
  • Europa Universalis IV: Art of War
  • Hearts of Iron IV Sign-up
  • Stellaris: Ancient Relics
  • Stellaris Sign-up
  • Hearts of Iron IV: Cadet
  • Crusader Kings II: Reapers Due
  • Europa Universalis IV: Rights of Man
  • Stellaris: Leviathans Story Pack
  • Stellaris - Path to Destruction bundle
  • Europa Universalis IV: Mandate of Heaven
  • Europa Universalis IV: Cradle of Civilization
  • Stellaris: Apocalypse
  • Europa Universalis IV: Rule Britannia
  • Stellaris: Distant Stars
  • Stellaris: Megacorp
  • Imperator: Rome
  • Hearts of Iron IV: Expansion Pass
  • Imperator: Rome Sign Up
  • Crusader Kings II: Conclave
  • Europa Universalis IV: Cossacks
  • Europa Universalis IV: Common Sense
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: El Dorado
  • Stellaris
  • Victoria 2
  • Europa Universalis III Complete
  • Europa Universalis III Complete
  • Crusader Kings II
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: Charlemagne
  • Europa Universalis IV: Mare Nostrum
First!

Looks great :). Hope that October's DD will be on CoC (or lack thereof:( ).
 
  • 2
Reactions:

podcat

Oberkommando HOI4
Super Moderator
12 Badges
Jul 23, 2007
12.610
30.928
  • Hearts of Iron III
  • Semper Fi
  • 500k Club
  • Europa Universalis III: Collection
  • Europa Universalis IV: Pre-order
  • Hearts of Iron II: Beta
  • Europa Universalis: Rome Collectors Edition
  • Mount & Blade: Warband
  • Paradox Order
  • Hearts of Iron IV Sign-up
  • Hearts of Iron IV: Together for Victory
errata: There is supposed to be a path from heavy fighters to jet fighters as well, but it seems to have fallen off at the moment.
 
  • 2
Reactions:

higrosco

Recruit
6 Badges
May 28, 2012
5
0
  • Crusader Kings II
  • Hearts of Iron III
  • Hearts of Iron III: Their Finest Hour
  • Rome: Vae Victis
  • Hearts of Iron IV Sign-up
  • Stellaris Sign-up
I like the new freedom flavour! :) However, I would love to see more customization options.
 
Last edited:

Wulf145

General
19 Badges
May 7, 2004
1.756
182
  • Hearts of Iron IV: Together for Victory
  • Hearts of Iron IV: La Resistance
  • BATTLETECH: Heavy Metal
  • BATTLETECH: Season pass
  • Hearts of Iron IV: Expansion Pass
  • BATTLETECH: Flashpoint
  • BATTLETECH - Digital Deluxe Edition
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: Death or Dishonor
  • BATTLETECH
  • Hearts of Iron Anthology
  • Hearts of Iron IV: Cadet
  • Hearts of Iron IV Sign-up
  • 500k Club
  • Semper Fi
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • For the Motherland
  • Hearts of Iron II: Armageddon
Questions:

Will we be able to research technology which will influence the 'starting levels' of a model i.e. I have researched 'Engine level 2' so my new Fighter will automaticaly start with a level 2 engine, or will you always start with the engine model 0 and have to spend experience to get it to level 2?

Will the experience be Air war experience or model specific i.e. I have 20 XP with the ME109, can this be used to upgrade the 'new' model FW190 or can I only use the XP for the ME109 Model?
 

keynes2.0

Field Marshal
42 Badges
Jun 27, 2010
7.861
4.278
  • Knights of Pen and Paper +1 Edition
  • Stellaris - Path to Destruction bundle
  • Rome: Vae Victis
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
  • Hearts of Iron Anthology
  • Rome Gold
  • Europa Universalis: Rome
  • Europa Universalis IV: Res Publica
  • March of the Eagles
  • Europa Universalis IV: Call to arms event
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Conquest of Paradise
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Darkest Hour
  • East India Company
  • Europa Universalis III: Chronicles
  • Age of Wonders: Planetfall
  • Surviving Mars: First Colony Edition
  • Surviving Mars: First Colony Edition
  • Age of Wonders II
  • Age of Wonders
  • Age of Wonders: Shadow Magic
  • Age of Wonders III
  • Surviving Mars
  • BATTLETECH
  • Hearts of Iron IV: Cadet
  • Stellaris Sign-up
  • Stellaris
  • Crusader Kings II: Conclave
  • Pride of Nations
  • 500k Club
  • Victoria 2
  • Cities: Skylines
I have never heard of a Whizzbang before.
 

Joe32320

First Lieutenant
58 Badges
Sep 26, 2008
277
41
  • Victoria 2: A House Divided
  • Stellaris - Path to Destruction bundle
  • Cities: Skylines - Natural Disasters
  • Stellaris: Leviathans Story Pack
  • Stellaris
  • Cities: Skylines - Snowfall
  • Europa Universalis IV: Cossacks
  • Cities: Skylines - After Dark
  • Victoria 2: Heart of Darkness
  • Arsenal of Democracy
  • Semper Fi
  • Victoria: Revolutions
  • Europa Universalis IV: Res Publica
  • Naval War: Arctic Circle
  • Europa Universalis IV: Art of War
  • Cities in Motion
  • Cities in Motion 2
  • Crusader Kings II
  • Commander: Conquest of the Americas
  • Europa Universalis III: Chronicles
  • Hearts of Iron III: Their Finest Hour
  • Europa Universalis IV: Wealth of Nations
  • Hearts of Iron III
  • For the Motherland
  • Europa Universalis IV: Call to arms event
  • Europa Universalis IV: Conquest of Paradise
  • Cities: Skylines - Parklife Pre-Order
  • Cities: Skylines - Parklife
  • Cities: Skylines - Green Cities
  • Europa Universalis IV: Rule Britannia
  • Stellaris: Synthetic Dawn
  • Hearts of Iron IV: Death or Dishonor
  • Europa Universalis IV: Mandate of Heaven
  • Cities: Skylines - Mass Transit
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: Expansion Pass
  • Steel Division: Normandy 44
  • Stellaris: Apocalypse
  • Hearts of Iron IV: Together for Victory
  • Europa Universalis IV: Rights of Man
  • Hearts of Iron IV: Colonel
  • Hearts of Iron IV: Cadet
  • Hearts of Iron IV Sign-up
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Common Sense
  • Pride of Nations
  • Europa Universalis IV: El Dorado
  • Cities: Skylines - Campus
  • 500k Club
This is very cool, lovely idea, Seahurricanes and Seafires here we come :p
 

gregor_mendel

Captain
65 Badges
Jan 4, 2008
301
97
  • Crusader Kings II
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
  • Semper Fi
  • Naval War: Arctic Circle
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • For the Motherland
  • Europa Universalis IV: Wealth of Nations
  • Stellaris: Apocalypse
  • Cities: Skylines - Parklife Pre-Order
  • Europa Universalis IV: Dharma
  • Crusader Kings II: Conclave
  • Steel Division: Normandy 44 -  Back to Hell
  • Europa Universalis IV: Golden Century
  • Europa Universalis IV: Rule Britannia
  • Cities: Skylines - Green Cities
  • Hearts of Iron IV: Cadet
  • Hearts of Iron IV: Together for Victory
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV: Death or Dishonor
  • Europa Universalis IV: Mandate of Heaven
  • Cities: Skylines - Mass Transit
  • Steel Division: Normandy 44
  • Crusader Kings II: Monks and Mystics
  • Europa Universalis IV: Rights of Man
  • Stellaris: Leviathans Story Pack
  • Cities: Skylines - Natural Disasters
  • Europa Universalis IV: Common Sense
  • Cities: Skylines - Campus
  • Crusader Kings II: Holy Fury
  • Cities: Skylines Industries
  • Crusader Kings III
  • Stellaris: Distant Stars
  • Cities: Skylines - Parklife
  • Victoria 2
  • 500k Club
  • Europa Universalis IV: El Dorado
  • Crusader Kings II: Way of Life
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Res Publica
  • Europa Universalis IV: Art of War
  • Darkest Hour
  • Cities: Skylines
  • Cities: Skylines Deluxe Edition
  • Stellaris - Path to Destruction bundle
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Rajas of India
  • Europa Universalis IV: Third Rome
Great update. Really excited to see the direction this is going. Looking forward to the naval aspects next!

One question though on the Air Force... How do we transport them around? I might be in the minority here but I would love it if air units had an on-map counter that moved like any other ground unit. I disliked the ability to just move my air units around all willy nilly, even with the org hit upon rebasing.

Now that we can transport air units by carrier, this feature would make even more sense!
 

SpermCube

Second Lieutenant
21 Badges
May 15, 2011
166
57
  • Crusader Kings II
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
  • Semper Fi
  • Heir to the Throne
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • For the Motherland
  • Divine Wind
  • Europa Universalis III Complete
  • Darkest Hour
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: Charlemagne
  • Europa Universalis III Complete
  • Europa Universalis III Complete
  • Victoria 2
  • Europa Universalis IV: Pre-order
  • Mount & Blade: Warband
  • Crusader Kings II: The Old Gods
Also, the XB-28, that's a prototype designation for US planes, right? Wouldn't it be B-28, if it actually went into (mass) production?