OpenTTD Developers Blog

Dear NoAI-writers,

I write you to inform you about good news: finally we made Valuators easy for everyone.

Q: What are Valuators?
A: AIList is a core object of the NoAI Framework. You can add tons of things in it. Like AITownList, it is a list of all towns in the map. Of course you want to get some useful data on all entries. Valuators are your friend. Simply do:

local list = AITownList();
list.Valuate(AITown.GetPopulation);

And you have a list of towns, where the first entry is the town with the biggest population! Easy, not?

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Well.. it has been a while. That is for sure. Nevertheless, NoAI is alive and kicking. Well, kicking it for sure does. In a short period of time we extended the API with many new functions, but we also dropped C++ support (see http://wiki.openttd.org/index.php/AI:Why_No_C++), we changed the Valuators completely (see next post), and some more drastic changes. You might wonder why.. and if there is more to happen soon.

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Little by little, commit by commit, we are getting closer to the release of version 0.6. Nice. For a user point of view, it seems like very good news indeed.

But for us, devs, it is a very boring situation. There are actually two reasons for this.

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Our NoAI branch, the branch where we design an API which allows anyone to build an AI in a simple and efficient way, is slowly getting more and more done.

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As of the last nightly, OpenTTD supports 32bpp graphics. Both the blitters and renderers (output to screen) as a PNG reader is done. This means that you can start making 32bpp graphics for OpenTTD that work. As a lot of lies are currently going around, here a post to tell what is true and what for sure isn’t.

Let’s start with a picture of 32bpp in action:

Now first of all: 8bpp is the core of OpenTTD, and it will remain that way. No way 32bpp will remove the need for 8bpp graphics.
Second, 32bpp is client side. So you can play on a server with mixed 32bpp and 8bpp clients, no problem at all. 32bpp just overrides the images on the client replacing them with more pretty graphics.

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Yesterday we had a long (real life, for a chance) talk about blitters, 32bpp, and how to resolve that all nicely. What we came up with is this.

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From today, it is also possible to use git in combination with OpenTTD. If you don’t know what git is, I suggest you forget about it. For all who do know what it is, feel free to use it.

http://git.openttd.org gives a nice overview of all the gits. You can use git://git.openttd.org/ to clone either the whole svn, or one branch, yourself (see http page which dir to clone).

We are _not_ replacing SVN with git. We are not even considering that. Read the rest of this entry »

NewIndustries is a feature that enables changing current industry behaviours and properties as well as adding brand new ones by means of grf files, following TTDPatch’s specs.

Implementation has started a long time ago, directly in trunk. Before any real newGRF work, all the industry properties and behaviours needed to be centralized. So it would be more convenient to change what was required to be. Not all that cleanup is actually finished. There are still some “rogue” data here and there, but nothing undoable. During that cleaning process, some nice bugs appeared, showing how interesting that feature will be, like temperate sawmill cutting trees around itself, exactly like the tropical lumber mill. Some other bugs were not as pleasant, but still, it was a nice learning process. Read the rest of this entry »

Today more OpenTTD developers decided they want to blog, so from now on this website is available via:

http://blog.openttd.org/

And you can expect posts from other developers too!

Today we evaluated 32bpp branch a bit. Sadly enough the creator of the branch wasn’t around, but I did my at most to gather as much information about the branch as possible, it’s status, our likes and dislikes. To make sure it is summarized at a common place this time, I will blog it here.

32bpp branch is far from finished. On several levels it needs work. Read the rest of this entry »