callback 19 solution mixes up separate concepts: cargo refit, and liveryĪn aside, the callback 19 feature has also been used for a few other novelty examples of changing vehicle properties, e.g.Ĭallback 19 relies on having a cargo in the vehicle so that choices can be made about the subtype.can't be supported by auto-replace (no mapping or translation between subtypes for different vehicles).can't really be used with 'refit at station' orders.
when a train consist contains vehicles that offer multiple different liveries and cargo refits, the menu for refitting the entire consist nfusing.options are text, not images, but the only purpose of liveries is eye candy, so pictures would be better when choosing.with an industry grf like FIRS or XIS present, and 4 liveries, the menu might have 256 entries number of options is number of liveries x number of cargos.This has survived as a solution for a long time, and is implemented in many newgrfs. This use dates back to at least 2006 or so įor players, the options implemented via callback 19 are made via the refit-in-depot menu for trains. Many newgrfs implement this using 'cargo subtypes' (callback 19). "British Airways, Air France, or Quantas" for planes."SNCF, SNCB, Railion or DB Schenker" for train engines."DHL, FedEx or Deutsche Post" for mail trucks.These are generally separate from company colour schemes. Vehicle newgrf authors like to provide alternate liveries (paint schemes) for vehicles. Per and many similar suggestions / request / discussions in past. It'll be at least a week before I have that opportunity though.I don't have a neat pitch for this, so here goes.
#OPENTTD NEWGRF FULL#
I figure that if I could sit down alone for a full day I could have this NewGRF finished. I've started fiddling with it, and I really like it. It's a declarative programming language, more or less. It's an almost 1-to-1 mapping to NFO, but human readable. The other alternative is called NML, or NewGRF Meta Language. Something that low level sounds like a good idea until you look at NFO.
I'm not terribly tempted by that idea, so I started looking at alternatives. My only alternative was to build an entire industry set. TrueGRF does this for you, and it's a setting that can't be changed.Īs much as I like tea it wasn't super fun playing on a map with only tea farms and tea factories. Therefore industry-type NewGRFs tend to disable other industry-type NewGRFs, and this includes the default industry set. Each type of industry has an ID and if this ID collides with an existing industry this can cause complications. Technically the sort of NewGRF I want to add is of the sort "Industry" which has a slight issue. The first I tried was TrueGRF, which is a web based tool with a lovely and usable interface. There are several tools available for doing this.
#OPENTTD NEWGRF MOD#
Thankfully this can be amended by writing a mod of a type called NewGRF (New Graphic Resource File). However, the game has one glaring and terrible omission: it doesn't contain tea. If you've missed my crush on it somehow just check these: Yes, I'm still totally engrossed in this game.
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