API

[Bennievv]

Does OpenTTD got an API?

Bennievv Newbie

[Yexo]

For what? Just read some basic in this forum or on the wiki. We have an API to write AIs and one to write GameScripts. I guess you could call the NewGRF specifications an API too.

Edit: and let's not forget the admin port.

[Bennievv]

For AI's

[Bennievv]

I found it:
http://wiki.openttd.org/Noai

EDIT Oops, I did say "API", but I needed a turtorial.

[Bennievv]

Uh... I have made a folder at OpenTTD/AI named "MyNewAI", with the info.nut file:

Code: Select all

class MyNewAI extends AIInfo {
  function GetAuthor()      { return "Bennievv"; }
  function GetName()        { return "MyNewAI"; }
  function GetDescription() { return "An example AI by following the tutorial at http://wiki.openttd.org/"; }
  function GetVersion()     { return 1; }
  function GetDate()        { return "2012-02-15"; }
  function CreateInstance() { return "MyNewAI"; }
  function GetShortName()   { return "XXXX"; }
  function GetAPIVersion()  { return "1.0"; }
}

RegisterAI(MyNewAI());

...and main.nut file:

Code: Select all

class MyNewAI extends AIController 
{
  function Start();
}

function MyNewAI::Start()
{
  while (true) {
    AILog.Info("I am a very new AI with a ticker called MyNewAI and I am at tick " + this.GetTick());
    this.Sleep(50);
  }
}

...but if I type

Code: Select all

start_ai MyNewAI

...I get the error:

Code: Select all

WARNING: Failed to load the specified AI

[FooBar]

Do you have the AI files stored in the correct directory, so that OpenTTD can find them?
In other words: does you AI show up in the ingame (GUI) list?

[Bennievv]

I maded it in OpenTTD/ai/MyNewAI, and I don't see it in the GUI-list...
But I gonna check it again...

[Bennievv]

Now it works!

[rplus]

Hi,

I've got the same issue.

Tried in C:\Program Files\OpenTTD\ai\MyNewAI\ and C:\Users\<user_name>\Documents\OpenTTD\ai\MyNewAI\ on Windows 10.

My AI does not show up in list_ai results.

Any hints?

[planetmaker]

My best bet is "some of the necessary info is missing". Hard to tell.

Call OpenTTD in debug mode to check:

You can test the detected AI and libraries by calling "openttd --help" in the command line. And possibly by calling it in debug mode: "openttd -d script=X" where X is a number 1...9. The higher the more spammy it will get.