I mean, this is how the AI handles the current supply system :
That is 150+ french divisions killing itself in Africa due to a low level port, and the AI doesnt recognize this and will not move divisions away to fix the situation. Ive had to mod naval bases to give 1k supply per level to prevent the AI from killing themselves. The same thing happens when infra gets damaged from infantry sucide attacking a province over and over, which drops infara down to 0 in a week or less.
Now imagine how the AI is going to handle the new trucks, trains and fuel mechanics.
Im getting a distinctive sense of de ja vu here. When EU4 had the new Emperor DLC come out, it introduced a whole bunch of new buildings and new mechanics, the highlights of which was the new Holy Roman Empire (HRE) and estate system. A dev confidently told me on discord that in his testing, the AI could handle playing as the emperor of the HRE now. The DLC was heavily hyped and heavily anticipated by the players who were eager to get their hands on the new mechanics.
Within 2 hours of testing the DLC, I noticed that the AI was not coded to handle many of the new features properly. Some examples :
-The AI would spam the new buildings randomly without caring about focusing on its economy. Since many of the new buildings were niche ones (e.g. coastal defences), the AI just went bankrupt faster by spamming coastal defences all over the place. No improvement was made at all to make the AI go bankrupt less, and this isnt even hard from a coding perspective (i have modded the EU4 AI myself to have very good economies simply by priotising economic buildings, its really not hard).
-Many new mission trees were not designed to be AI friendly. For example, making a mission that require Austria to own a certain province will break the AI if the mission tree does not give claims on the province, as the AI will not know that they are supposed to attack the province to proceed in their mission tree.
-No attempt was made to address hardcoded AI behaviour unique to the HRE, such as the AI absolutely refusing to attack another AI if they are both in the HRE and are not rivals, even if their mission trees give them claims on each other. For example, giving Austria claims to proceed in their mission tree doesnt work when they are hardcoded to not attack the other nation because they are both in the HRE and arent rivals. Keep in mind that this was supposed to be the DLC that reworked the HRE.
-The AI was now hardcoded to NEVER keep a large standing army in peace time. So when war broke out, you could walk next door and destroy their army before they could raise an army to fight and the war would literally last less than 30 seconds. This was immediately obvious in the first 15 minutes of the game.
-The AI had no idea how to manage the new estates and would keep triggering infinite rebellions that would destroy their small peacetime army, and then the rebels would sit there forever because they did not have enough soldiers to seige down the castle, and then the AI country would be unable to do ANYTHING till they got annexed by someone. Again, this was immediately obvious in the first 15 minutes.
-The AI STILL has no idea how to play as the emperor of the HRE, so they just let half the empire remain as the wrong faith after the religious war which prevents them from passing any laws forever and ever...which is the exact same behaviour before the DLC, with zero improvements.
(This is nowhere near a comprehensive list of issues by the way)
So now, try to imagine how the AI is going to handle the new supply system. Just imagine.
Edit : I should add that currently, the AI absolutely HATES building to max infra even if they have idle civ factories. Im not sure why or if its even moddable. But this is very obvious if you tag switch to random minors in 1941+, they might have all building slots filled, level 5 AA in every state, but will be sitting there with level 4-6 infra with idle civ factories.
So i wouldnt expect the AI to be smart enough to build supply hubs properly when they currently cant even build infra properly, let alone naval bases to bring in more supplies for amphibious landings....
That is 150+ french divisions killing itself in Africa due to a low level port, and the AI doesnt recognize this and will not move divisions away to fix the situation. Ive had to mod naval bases to give 1k supply per level to prevent the AI from killing themselves. The same thing happens when infra gets damaged from infantry sucide attacking a province over and over, which drops infara down to 0 in a week or less.
Now imagine how the AI is going to handle the new trucks, trains and fuel mechanics.
Im getting a distinctive sense of de ja vu here. When EU4 had the new Emperor DLC come out, it introduced a whole bunch of new buildings and new mechanics, the highlights of which was the new Holy Roman Empire (HRE) and estate system. A dev confidently told me on discord that in his testing, the AI could handle playing as the emperor of the HRE now. The DLC was heavily hyped and heavily anticipated by the players who were eager to get their hands on the new mechanics.
Within 2 hours of testing the DLC, I noticed that the AI was not coded to handle many of the new features properly. Some examples :
-The AI would spam the new buildings randomly without caring about focusing on its economy. Since many of the new buildings were niche ones (e.g. coastal defences), the AI just went bankrupt faster by spamming coastal defences all over the place. No improvement was made at all to make the AI go bankrupt less, and this isnt even hard from a coding perspective (i have modded the EU4 AI myself to have very good economies simply by priotising economic buildings, its really not hard).
-Many new mission trees were not designed to be AI friendly. For example, making a mission that require Austria to own a certain province will break the AI if the mission tree does not give claims on the province, as the AI will not know that they are supposed to attack the province to proceed in their mission tree.
-No attempt was made to address hardcoded AI behaviour unique to the HRE, such as the AI absolutely refusing to attack another AI if they are both in the HRE and are not rivals, even if their mission trees give them claims on each other. For example, giving Austria claims to proceed in their mission tree doesnt work when they are hardcoded to not attack the other nation because they are both in the HRE and arent rivals. Keep in mind that this was supposed to be the DLC that reworked the HRE.
-The AI was now hardcoded to NEVER keep a large standing army in peace time. So when war broke out, you could walk next door and destroy their army before they could raise an army to fight and the war would literally last less than 30 seconds. This was immediately obvious in the first 15 minutes of the game.
-The AI had no idea how to manage the new estates and would keep triggering infinite rebellions that would destroy their small peacetime army, and then the rebels would sit there forever because they did not have enough soldiers to seige down the castle, and then the AI country would be unable to do ANYTHING till they got annexed by someone. Again, this was immediately obvious in the first 15 minutes.
-The AI STILL has no idea how to play as the emperor of the HRE, so they just let half the empire remain as the wrong faith after the religious war which prevents them from passing any laws forever and ever...which is the exact same behaviour before the DLC, with zero improvements.
(This is nowhere near a comprehensive list of issues by the way)
So now, try to imagine how the AI is going to handle the new supply system. Just imagine.
Edit : I should add that currently, the AI absolutely HATES building to max infra even if they have idle civ factories. Im not sure why or if its even moddable. But this is very obvious if you tag switch to random minors in 1941+, they might have all building slots filled, level 5 AA in every state, but will be sitting there with level 4-6 infra with idle civ factories.
So i wouldnt expect the AI to be smart enough to build supply hubs properly when they currently cant even build infra properly, let alone naval bases to bring in more supplies for amphibious landings....
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