HOI4 Dev Diary - Early look at at supply and the coming year

  • Crusader Kings II Expansion Subscription

    Subscribe to the CK II Expansion and enjoy unlimited access to 13 major expansions and more!


  • 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

GeorgieBest

Lt. General
On Probation
47 Badges
Jul 31, 2014
1.239
2.405
  • Crusader Kings II: Charlemagne
  • Stellaris - Path to Destruction bundle
  • Semper Fi
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • For the Motherland
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: The Republic
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II
  • Stellaris: Humanoids Species Pack
  • Stellaris: Necroids
  • Stellaris: Apocalypse
  • Steel Division: Normandy 44 -  Back to Hell
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Distant Stars
  • Crusader Kings II: Holy Fury
  • Imperator: Rome
  • Stellaris: Ancient Relics
  • Stellaris: Lithoids
  • Hearts of Iron IV: La Resistance
  • Stellaris: Federations
  • Imperator: Rome - Magna Graecia
  • Crusader Kings III
  • Battle for Bosporus
  • Crusader Kings II: Jade Dragon
  • Crusader Kings II: Way of Life
  • Crusader Kings II: Horse Lords
  • Crusader Kings II: Conclave
  • Stellaris
  • Hearts of Iron IV: Cadet
  • Crusader Kings II: Reapers Due
  • Stellaris: Digital Anniversary Edition
  • Stellaris: Leviathans Story Pack
  • Hearts of Iron IV: Together for Victory
  • Crusader Kings II: Monks and Mystics
  • Steel Division: Normandy 44
  • Hearts of Iron IV: Death or Dishonor
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Megacorp
  • Stellaris: Synthetic Dawn
  • Steel Division: Normand 44 - Second Wave
@podcat This update does not address the main problem with the supply system, that is you just strat bomb a few railroads around the capital and the entire country is out of supply, no matter how large. This is neither realistic nor balanced. There are only two ways you can address that:
1. Dynamic or switchable center source of supply. The center source of supply by default is the capital, but should the capital be unable to be an effective center of supply, the center of supply is switched to a different city.
2. Diminishing effects of supply chain disruptions, the more upstream from the target the disruption. This is a bit gamey, but it also does the trick. Sea routes are treated as one hop, each region is treated as one hop. Supply disruptions 5 hops away are irrelevant to supply, 4 hops only 25% effect, 3 hops 50% 2 hops 75% and one hop at 100%. First solution is better for gameplay, second solution is easier.
Podcat posted in this thread saying they have a way to negate this flaw in the current supply system, but that he will be revealing more about it in a later DD.
 
  • 3
  • 2Like
  • 1
Reactions:

Crecer13

Second Lieutenant
Mar 15, 2019
174
88
He already answered that, no.
This is a rather controversial dubious decision. For example, the Soviet paratroopers in the Vyazema operation seized the railway station and used German weapons and guns.
 
  • 3Like
  • 1
Reactions:

Captain de Gaulle

Corporal
12 Badges
Feb 21, 2021
30
187
  • Crusader Kings II
  • Victoria 2
  • Stellaris
  • Hearts of Iron IV: Cadet
  • Hearts of Iron IV: Together for Victory
  • Steel Division: Normandy 44
  • Steel Division: Normandy 44 Deluxe Edition
  • Hearts of Iron IV: Death or Dishonor
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: La Resistance
  • Battle for Bosporus
@podcat This update does not address the main problem with the supply system, that is you just strat bomb a few railroads around the capital and the entire country is out of supply, no matter how large. This is neither realistic nor balanced. There are only two ways you can address that:
1. Dynamic or switchable center source of supply. The center source of supply by default is the capital, but should the capital be unable to be an effective center of supply, the center of supply is switched to a different city.
2. Diminishing effects of supply chain disruptions, the more upstream from the target the disruption. This is a bit gamey, but it also does the trick. Sea routes are treated as one hop, each region is treated as one hop. Supply disruptions 5 hops away are irrelevant to supply, 4 hops only 25% effect, 3 hops 50% 2 hops 75% and one hop at 100%. First solution is better for gameplay, second solution is easier.
This is only a small part of the new supply system , wait to see all the devs work and then you can ake yourself an opinion
 
  • 2Like
Reactions:

Metz

Field Marshal
92 Badges
Nov 21, 2008
4.437
4.921
  • Cities: Skylines Deluxe Edition
  • Victoria: Revolutions
  • Europa Universalis: Rome
  • Rome Gold
  • Semper Fi
  • Sengoku
  • Stellaris: Galaxy Edition
  • Victoria 2: A House Divided
  • Victoria 2: Heart of Darkness
  • Rome: Vae Victis
  • Stellaris: Galaxy Edition
  • Europa Universalis IV: Third Rome
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Res Publica
  • Stellaris - Path to Destruction bundle
  • Europa Universalis IV: Pre-order
  • Crusader Kings II: Jade Dragon
  • Europa Universalis IV: Cradle of Civilization
  • Cities: Skylines - Natural Disasters
  • Humble Paradox Bundle
  • Europa Universalis IV: Common Sense
  • Stellaris
  • Cities: Skylines - After Dark
  • Europa Universalis IV: Cossacks
  • Hearts of Iron IV: Expansion Pass
  • Cities: Skylines - Snowfall
  • Divine Wind
  • Crusader Kings II
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: Legacy of Rome
  • 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
  • Crusader Kings II: Sword of Islam
  • Darkest Hour
  • Europa Universalis III
  • Europa Universalis III Complete
  • Cities in Motion
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Call to arms event
  • For the Motherland
  • Hearts of Iron III
  • Hearts of Iron III: Their Finest Hour
  • Heir to the Throne
  • Hearts of Iron IV Sign-up
  • Europa Universalis IV
The Yugoslavia tree could use some changes, the aligning with the Comintern path basically locks you out of doing anything with the other Balkan countries. There should at least be more options for using spies and partisans if your country is occupied.
 
  • 5
Reactions:

BeauNiddle

Colonel
66 Badges
Oct 5, 2011
962
876
  • Stellaris: Galaxy Edition
  • Semper Fi
  • Europa Universalis IV: Res Publica
  • Tyranny: Gold Edition
  • Victoria 2: A House Divided
  • Leviathan: Warships
  • Victoria 2: Heart of Darkness
  • Heir to the Throne
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • For the Motherland
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Conquest of Paradise
  • Divine Wind
  • Europa Universalis III Complete
  • Tyranny: Archon Edition
  • Tyranny: Archon Edition
  • Hearts of Iron IV: Colonel
  • Hearts of Iron IV: Cadet
  • Stellaris Sign-up
  • Hearts of Iron IV Sign-up
  • Hearts of Iron IV: Together for Victory
  • Stellaris: Digital Anniversary Edition
  • Stellaris: Leviathans Story Pack
  • 500k Club
  • Hearts of Iron IV: Expansion Pass
  • BATTLETECH
  • Hearts of Iron IV: Death or Dishonor
  • BATTLETECH: Flashpoint
  • Hearts of Iron IV: Expansion Pass
  • Tyranny - Bastards Wound
  • Age of Wonders III
  • Europa Universalis III Complete
  • Battle for Bosporus
  • Shadowrun: Hong Kong
  • Stellaris: Distant Stars
  • BATTLETECH - Digital Deluxe Edition
  • Europa Universalis IV
  • BATTLETECH: Heavy Metal
  • Shadowrun: Dragonfall
  • Europa Universalis III Complete
  • Stellaris: Humanoids Species Pack
  • Stellaris: Galaxy Edition
  • Victoria 2
  • Shadowrun Returns
  • Europa Universalis IV: El Dorado
  • Pillars of Eternity
  • Europa Universalis IV: Common Sense
  • Europa Universalis IV: Cossacks
  • Europa Universalis IV: Mare Nostrum
How will horses fit into this system, since it's important to remember that the Wehrmacht, for example, was under-equipped in trucks that they relied heavily on supplies transported by horses.

If you check the "show only dev responses" you'll find

it cant connect into the network as such, but trucks can be used away from rails. Atm trucks is something that may end up changing a bit but the idea is that without them you are basically running with horses so you dont get 0 if you dont have trucks. Oh and there is also some local supply still like before for small amount of troops

So trucks are an improvement on horses. Horses will be used as a fall back and will get you some supplies.
 
  • 4
Reactions:

Ketchup & friends

Lt. General
Jan 4, 2020
1.594
2.625
‘Barbarossa’ and the unannounced DLC will focus on the Eastern Front and the core of Hearts of Iron, which is warfare - particularly land warfare. Historically the Eastern Front was without doubt the most important front for World War II.
Awesome! please fix the map along with adding railroads (part 2 of @seattle 's suggestion)
And please implement the suggestions made in @Major Malfunction 's United Soviet Suggestions Recompilation thread and add more planned Reichskomissariats (@opsircrocodile ).

Rivers also had a huge importance on the eastern front for transport and supply so they will work essentially like basic railroads now, where you need to control both sides of their banks to use them to ship supplies around.
Will the size of the river matter for the amount of supply?

How will supply of isolated Islands (e.g. Malta, LOL) work?
 
  • 3
  • 1
  • 1
Reactions:

safe-keeper

● ← hole to another universe
53 Badges
Sep 6, 2012
7.766
11.082
livetkanfly.com
  • Crusader Kings II
  • Stellaris: Galaxy Edition
  • Stellaris: Galaxy Edition
  • Stellaris - Path to Destruction bundle
  • Stellaris
  • Cities: Skylines - After Dark
  • Semper Fi
  • Europa Universalis IV: Res Publica
  • Magicka
  • Heir to the Throne
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • Europa Universalis IV: Art of War
  • Cities in Motion
  • For the Motherland
  • Divine Wind
  • Europa Universalis III Complete
  • Europa Universalis III: Chronicles
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Sword of Islam
  • Darkest Hour
  • Europa Universalis III
  • Hearts of Iron IV: Colonel
  • Hearts of Iron IV: Field Marshal
  • Stellaris: Leviathans Story Pack
  • Hearts of Iron IV: Expansion Pass
  • Steel Division: Normandy 44
  • Cities: Skylines - Mass Transit
  • Steel Division: Normand 44 Sign-up
  • Hearts of Iron IV: Death or Dishonor
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Apocalypse
  • Imperator: Rome Sign Up
  • Cities: Skylines - Parklife
  • Shadowrun: Dragonfall
  • Cities: Skylines Industries
  • Hearts of Iron IV: Cadet
  • Stellaris Sign-up
  • Hearts of Iron IV Sign-up
  • Stellaris: Galaxy Edition
  • Europa Universalis IV: Mare Nostrum
  • Cities: Skylines - Snowfall
  • Europa Universalis IV: Common Sense
  • Pillars of Eternity
  • Europa Universalis IV: El Dorado
  • Battle for Bosporus
  • 500k Club
  • Victoria 2
  • Europa Universalis III Complete
  • Europa Universalis III Complete
Update from my Russia campaign.

I loaded a 1939 bookmark on a high-ish difficulty setting and and declared war on Japan early to have some fun. It's a bit of a gamble with regards to the German invasion, but I figure I'll be all right.

By the summer of 1941, I've browbeaten the Japanese enough to feel comfortable sending my armour and most of my divisions back to Europe, as Germany starts justifying war with the Soviet Union.

July 1941: Germany declares war. With a 1939 start and a Veteran difficulty level, I'm expecting a tough campaign until I can turn things around. The Blitzkrieg machine is poised to push aside my small border force and swiftly advance deep into Russia. With only a token force of greenhorns at the border, I start losing ground at an alarming rate.

Sonic blitzkriefg.jpg


Also July 1941: with nearly no divisions left and its Chinese possessions in tatters, Japan declares war on the Phillipines, and by consequence, the USA.

Japanese tatters.jpg


With no Japanese threat to speak of, the United States decides to send the entire American army to Russia.

Sonic mad.jpg


I hope Barbarossa has an AI upgrade.
 
  • 6Haha
  • 4
Reactions:

General Von Trapp

Captain
24 Badges
May 22, 2016
395
119
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: Legacy of Rome
  • 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
  • Crusader Kings II: Sword of Islam
  • Crusader Kings II
  • Crusader Kings II: Monks and Mystics
  • Crusader Kings III
  • Hearts of Iron IV: La Resistance
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: Expansion Pass
  • Crusader Kings II: Jade Dragon
  • Hearts of Iron IV: Death or Dishonor
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV: Field Marshal
  • Hearts of Iron IV: Colonel
  • Hearts of Iron IV: Cadet
  • Crusader Kings II: Conclave
  • Crusader Kings II: Horse Lords
  • Crusader Kings II: Way of Life
  • Crusader Kings II: Holy Fury
Trains are a new equipment type that we will dig into in a future diary (well actually, several types ;P)

A beloved Horse to cart my supplies across the steppe?

So excited... man I love this game!

I guess we can target railways also looking for trains... Trainspotting for the airforce?
 
  • 1Haha
Reactions:

bitmode

1st Reverse Engineer Battalion
Nov 10, 2016
2.992
3.164
So, will all land units move faster on rails? (Like in Civ 5)
If you click "show only dev responses" in the thread navigation, you'll find your answer.
 
  • 4
  • 1Like
Reactions:

Trinium

Private
Apr 5, 2018
14
20
Now that you guys look at land battles again please also add more models for artillery/anti-tank/anti-air, ill gladly pay €60 for that.

1617905726258.png

This one for all 3 gets kinda boring.
 
Last edited:
  • 3Like
  • 3
  • 2Love
Reactions:

Hoi Neuling

Lt. General
35 Badges
Aug 30, 2012
1.437
236
  • Hearts of Iron III
  • Stellaris: Lithoids
  • Stellaris: Humanoids Species Pack
  • Stellaris: Apocalypse
  • BATTLETECH - Digital Deluxe Edition
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Distant Stars
  • BATTLETECH: Flashpoint
  • Stellaris: Megacorp
  • Stellaris: Ancient Relics
  • Hearts of Iron IV: Expansion Pass
  • BATTLETECH: Heavy Metal
  • Hearts of Iron IV: La Resistance
  • Stellaris: Federations
  • Battle for Bosporus
  • Empire of Sin
  • Stellaris: Necroids
  • Hearts of Iron IV: Death or Dishonor
  • BATTLETECH
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Leviathans Story Pack
  • Stellaris: Digital Anniversary Edition
  • 500k Club
  • Hearts of Iron IV: Colonel
  • Stellaris
  • Hearts of Iron IV: Cadet
  • Stellaris: Galaxy Edition
  • Stellaris: Galaxy Edition
  • Darkest Hour
  • Arsenal of Democracy
  • King Arthur II
  • BATTLETECH: Season pass
  • Hearts of Iron IV: Expansion Pass
  • Stellaris - Path to Destruction bundle
  • Stellaris: Synthetic Dawn
ITA76 good Things need time and smaller Things not. I would not be surprised if that Refit from the Base-Game will get about 2 Years, if therefore the big open Job-Sites get done (R & D, Land- and Airthings, Advisors, Agency and wahtever important), wich is integrated or have to show up but not working 95 % (100 % you will never get).
 

PurpulaPhoenixum53

Colonel
43 Badges
Oct 8, 2016
1.074
847
  • Crusader Kings II
  • Cities: Skylines - After Dark
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sword of Islam
  • Europa Universalis IV
  • Europa Universalis IV: Third Rome
  • Europa Universalis IV: Pre-order
  • Europa Universalis IV: Res Publica
  • Europa Universalis IV: Wealth of Nations
  • Hearts of Iron IV: Together for Victory
  • Europa Universalis 4: Emperor
  • Crusader Kings II: Monks and Mystics
  • Europa Universalis IV: Mandate of Heaven
  • Hearts of Iron IV: Death or Dishonor
  • Europa Universalis IV: Cradle of Civilization
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV: Rule Britannia
  • Cities: Skylines - Parklife Pre-Order
  • Cities: Skylines - Parklife
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV: Dharma
  • Crusader Kings II: Holy Fury
  • Europa Universalis IV: Golden Century
  • Hearts of Iron IV: Expansion Pass
  • Battle for Bosporus
  • Crusader Kings II: Reapers Due
  • Europa Universalis IV: Conquest of Paradise
  • Cities: Skylines
  • Europa Universalis IV: El Dorado
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: Common Sense
  • Europa Universalis IV: Cossacks
  • Crusader Kings II: Conclave
  • Hearts of Iron IV: Cadet
  • Europa Universalis IV: Rights of Man
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Call to arms event
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: Legacy of Rome
  • Europa Universalis IV: Mare Nostrum
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Sons of Abraham
  • Hearts of Iron IV: La Resistance
oh pretty soon. i like to mix some mechanics diaries in between focus tree diaries, also this time we are probably gonna split some of the focus tree diaries into two because they are quite large this time around.

Okay this has me intrigued to the possible Finnish tree and just how large the Soviet tree is. The more and more I reread this, the more pumped I get for the next DLC. Keep up the great works guys! Can't wait to see the focus trees.
 
  • 5
  • 1Like
Reactions:

Medu Salem

Second Lieutenant
56 Badges
Nov 8, 2015
142
112
  • Europa Universalis III
  • Europa Universalis III: Chronicles
  • Divine Wind
  • Cities in Motion
  • Europa Universalis IV: Conquest of Paradise
  • Heir to the Throne
  • Rome Gold
  • Stellaris: Apocalypse
  • Cities: Skylines - Mass Transit
  • Stellaris: Humanoids Species Pack
  • Hearts of Iron IV: Expansion Pass
  • Cities: Skylines - Green Cities
  • Tyranny - Bastards Wound
  • Prison Architect: Psych Ward
  • Hearts of Iron IV: La Resistance
  • Hearts of Iron IV: Death or Dishonor
  • Stellaris: Federations
  • Stellaris: Lithoids
  • Surviving Mars: Digital Deluxe Edition
  • Cities: Skylines - Parklife Pre-Order
  • Cities: Skylines - Parklife
  • Stellaris: Distant Stars
  • Surviving Mars: First Colony Edition
  • Cities: Skylines Industries
  • Stellaris: Megacorp
  • Hearts of Iron IV: Expansion Pass
  • Prison Architect
  • Surviving Mars: First Colony Edition
  • Stellaris: Ancient Relics
  • Stellaris: Galaxy Edition
  • Europa Universalis IV
  • Battle for Bosporus
  • Rome: Vae Victis
  • Cities: Skylines
  • Cities: Skylines Deluxe Edition
  • Europa Universalis IV: Pre-order
  • Pride of Nations
  • Cities: Skylines - After Dark
  • Cities: Skylines - Snowfall
  • Stellaris
  • Stellaris - Path to Destruction bundle
  • Stellaris: Galaxy Edition
  • Stellaris: Necroids
  • Hearts of Iron IV: Cadet
  • Tyranny: Archon Edition
  • Tyranny: Archon Edition
  • Tyranny: Gold Edition
  • Stellaris: Digital Anniversary Edition
  • Stellaris: Leviathans Story Pack
  • Cities: Skylines - Natural Disasters
May be wishful thinking but if there is going to be rail networks with the DLC then it would be nice if the supplies provided from the industries would be loaded into the train network using the nearest hub and from there flow down the rail network to the closest consuming army or if not needed getting stockpiled at the nearest hub.

That way it wouldn't have to flow all the way from the capital city to the front, which if we think about isn't realistic anyway. Ontop of that it would become near to impossible to completely choke a countries armies out by just cutting them off from the capital supply lines as they then would be more realistically supplied from their industrial areas across the entire country.

But I guess that it would add too much complexity, especially in terms of calculation power necessary for the game to run smoothly.
 
  • 1Like
Reactions:

Trinium

Private
Apr 5, 2018
14
20
Hopefully then can shed some light on the distribution and the mentioned hubs in the next dev diary.

mybe also a good time to look at stockpiling resources?
 
  • 1Like
Reactions: