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AI Files for Beginners Tutorial |
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When you are modding armada2 you will find there are two main areas, programming and arty stuff. The arty stuff is more about talent in my opinion and is difficult to learn (I can't do it). I can however mod programming files odf etc. as these are easier to learn and don't require as much talent. Though programming is generally simple, one area of it confuses nearly everybody (including me) and that area is know as the AI. This area is really quite complex as you are programming how you want the computer to play against the player. The best AIs use all the ships and stations available to it, gets them built quickly and has a strong economy to support them. The best AIs do all this without following a predictable pattern.
So how do you do it?
Ok most AI files are AIPs. Each race has 5 plus files for any missions the game has. You have to make any changes to all 5 files for it to work, as they are just slight variants of each other for the AI to vary it's strategy.
Here is here is the first part of the federation_instant_action_build_list.aip.
//
// Borg_Build_List.aip
//
// Contains a default build list for the klingon AI
//
// edited by the Nord
// Load up the basic structures...
#include \"aipdef.h\"
// This aip needs to play by the rules
int checkTechnologyAvailable = 1;
Way_Better_Build_List_Element the_build_list[MAX_ELEMENTS] =
{
//---------------------------- ----------------------------------------
This section you can ignore except for this bit
int checkTechnologyAvailable = 1
By default the AI isn't effected by techtrees so it can build Akira class vessels without a Research Facility ect. When this line is present the AI checks the techtrees before trying to build a vessel. I personally delete this line and make the AI build the required building before moving on to dependant ships anyway.
After this you come to the build list. This is the order in which the AI constructs ships and stations. This is the bit we can do stuff with. The AI follows this list to the letter and this list is used by the AI no matter it's difficulty level (Hard AIs get resource gathering and combat bonuses but still build the same ships).
Ok here is the start of the federation_instant_action_build_list.
//
// Syntax: \"ODF name\", number to build, base to build at, max number from this line, min tech level
//
//
// Phase I. Base & Yard
//
\"fbase\", 1,0, -1, 1, // starbase
\"fconst\", 1,0, -1, 0, // construction ship
\"fconst\", 1,0, -1, 0, // second construction ship
\"fscout\", 1,0, -1, 0, // scout
\"fmining\", 1,1, -1, 0, // mining stations
\"fturret\", 2,1, 4, -3, // basic mining defense
\"forbital\", 1,1, -1, 0, // build an orbital station
\"ffreight\", 2,0, -1, 0, // mining freighter - two freighters for each station
\"fyard\", 1,0, -1, 0, // basic shipyard
\"fdestroy\", 2,0, 4, -2, // Defiant
The first column is the name of the odf used. You first notice that the first thing it tries to build is a starbase. This is because the list defines what the AI is supposed to have so if you changed the start units but not the AI file the AI would try and build any of the units you changed.
The first number is how many of the odf the AI is supposed to have which doesn't need explaining.
The second number is location to build the odf at. 0 is the AIs "main base" or starting position. 1 is the nearest dilithium moon to the AI. (The orbital processing facility is built at the planet nearest the moon) 2 or more are subsequent dilithium moons in order of priority (The AI will ignore the nearest moon if it can go a bit further and find an infinite moon)
The third number is how many times to repeat the line if the odf from the line is destroyed for example this is a line in the file:
\"fdestroy\", 2, 0, 2, 0, // Defiant
The AI will build two Defiant Class ships and then if one of them are destroyed it will replace it with another one meaning that in total the AI can build four Defiant Class ships.
If the number –1 is there the will replace it an unlimited number of times which is why the starter units are on the list.
The next column I will come back to.
The AI moves on to the next line when it has started all of the line above. Look at this extract:
\"fturret2\", 3,0, -1, 0, // torpedo turret
\"ffrigate\", 1,0, -1, -4, // Aegean
If you have 3 construction ships and an advanced shipyard the AI will start the turrets and then start the Aegean so the AI doesn't have to wait for the line above to be finished.
\"fbattle\", 4,0, -1, 0, // Sovereign
\"fcruise2\", 2,0, -1, 0, // Steamrunner (Artillery)
Suppose the Al has 2 of each type of shipyard it will start building 2 of the sovereigns but as it hasn't started all of the line it can't move onto the next line. This means the standard shipyards are left doing nothing slowing down the AIs fleet building.
This is a way round this
\"fbattle\", 2,0, -1, 0, // Sovereign
\"fcruise2\", 2,0, -1, 0, // Steamrunner (Artillery)
\"fbattle\", 2,0, -1, 0, // Sovereign
The AI will start two sovereigns then two Steamrunners and when there is space at the advanced shipyards the other two are built. (if the AI has enough resources…
The fourth number is very confusing but if you are really ambitious this is how you use it.
The fourth number represents a technological barrier to stop the AI building weaker ships when it builds certain things (usually stations). This makes sure the longer you play the stronger the ships against you get. This is actually cannon as NX class ships are not built in the 24th century when Defiant class ships are cheaper, more powerful and faster.
Look at the first entry:
\"fbase\", 1,0, -1, 1, // starbase
\"fconst\", 1,0, -1, 0, // construction ship
\"fconst\", 1,0, -1, 0, // second construction ship
In the fourth column there is a one this means that the AI thinks that this is the start of tech level one that ends when an entry with 2 in the column appears. Now entries with a zero are unaffected by this but entries with a negative number are. The number –1 would mean that the AI would stop replacing the ship after tech level 1.
Here is an example:
//
// Phase II. Research
//
\"fresear\", 1,0, -1, 2, // basic research
\"fcolony\", 1,0, 4, 0, // colony ship
\"fdestroy2\", 2,0, 4, -2, // Defiant
\"fcruise1\", 2,0, -1, -2, // Akira
//
// Phase III. Advanced Shipyard
//
\"fyard2\", 1,0, -1, 3, // advanced shipyard
\"fgalaxy\", 3,0, -1, -4, // Galaxy (Battleship)
When tech level 2 ends the AI will stop replacing the Defiant and Akira class vessels, regardless of column 3. This stops the AI wasting resources. The galaxy will be built in tech level 3 but can be replaced in levels 3 and 4 but will stop being replaced in level 5.
So a positive number decides when a level starts, a negative number decides what level something is restricted to and 0 means it is unaffected.
Ok now you know how AI files work. With this you can make the AI use any ships you add to the game or you can completely rework the AI into a stronger more interesting player.
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| | | User Comments | | The following comments are owned by the user that posted them. Armada 2 Files is not responsible for their content.
Total comments: 11 | Last comment: 09-28-2011 at 09:02
AdmarilRyan
From:  (Lincoln)
Joined: May 9th, 2005
Posts: 664 | I didn't realise I submitted this is March 2004! Hangon... I hadn't even started modding in March 2004! that is strange.....
also there has being a weird error...
"fyard2", = "fyard2"
you have to ignore the random backslashes |
AdmarilRyan
From: (Lincoln)
Joined: May 9th, 2005
Posts: 664 | ur this is very strange I put
"fyard" = "fyard"
I think I need to go lie down! |
DScottHewitt
From: 
Joined: February 10th, 2007
Posts: 28 | Since the Admiral pointed me to it in my thread about this.....
Scott |
Chiletrek
From: 
Joined: March 3rd, 2003
Posts: 1028 | Hello:
Even though I learned some of the AI editing by following the Norway Class minimod (and how the author added that ship to the AI), I find this tutotial both good and useful.
Thanks for the tutorial  |
Lee2006
From: (Fresno)
Joined: April 29th, 2006
Posts: 2 | I don't know what it is but I don't understand it. You need to write this up from the understanding that a person has no knowledge but wants to learn how.. U get it? I mean I don't. Make it so a child could understand. For ex.. How do I even open up the files needed to change the cpu, where are they located? Give examples, help put the readers mind into the editing mode and establish and build on the fundementals. This tuturial is for novices but I am a beginner thank you. |
AdmarilRyan
From: (Lincoln)
Joined: May 9th, 2005
Posts: 664 | #5 right...not quite sure what your problem is.
If you can't even find the files, they are in the AI/AIPs directory.
If you really can't get that far then I'm afraid no tutorial on the subject will help you.
AI modding is perhaps the most difficult part of modding Armada 2, I am one of very few modders who have mastered it (well, mastered aspects of it), generally most won't even touch it. When I wrote this I should perhaps have explained that this is for beginners to AI modding, not beginners to modding overall. A basic understanding of concepts like odfs and techtrees are needed before this will make sence to you. |
dEjavU001
Joined: May 7th, 2008
Posts: 35 | Hello...... I'm trying to tweak the game AI for the Romulans in instant action because unlike the cardassian race(that I moded into using Dominion ships as well)the AI builds a variety of different ships but the romulans end up building only(rbattle2)warbirds throughout the duration of the game without any other variety of other classes of ships(maybe a science vessel now and again).....please help me out here.I dont understand whats causing this glich. i try to brush up on the inner workings of the AI but I dont know how to open the files in question....HELP ANYONE!!! |
dEjavU001
Joined: May 7th, 2008
Posts: 35 | ...........is there anyone left in the Armada II community..............did I come a little too late.. |
Freyr (Staff)
From: (FileFront Network Administrator)
Joined: December 23rd, 2004
Posts: 784 | There are plenty of people still left around, but there are thousands of pages on this site, and the comments section is meant to be for comments on the file, rather than communication between people.
If you drop a message in the forum :-
http://forums.filefront.com/star-trek-armada-ii-136/?=
Then it will get noticed within a reasonable time frame and people will be able to respond to it. |
Darkrenamon
From:  (Bremerhaven)
Joined: November 15th, 2007
Posts: 8 | i want create a race. can you write a tutorial for this? |
Quarren_X
From: (Georgia)
Joined: February 16th, 2009
Posts: 103 | haha that sounds like a handy tutorial to have, If I seen one like that I would hit it up! |
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