Proposal: cb to specify industry layout to be used.

[andythenorth]

I have at least one valid case for specifying the layout to be used when trying to construct an industry.

I am guessing that this would be best done with a cb, called ahead of cb28 (and I assume, after cb22).

The layout number would be returned as a byte. A preferred alternative would be to return a list of layout numbers, and let the game choose which to use, but I can't think how that would be done.

Various variables would need to be available during the cb.
- var A7 (and maybe B3)
- it would be useful but not essential to be able to get to tile info, i.e. var 62
- maybe 61, 64, 65, 66, 67, 68
- using the same vars as cb 28 has available might be best, for ease.

I wondered if it was possible to extend cb28, something like return 05 xx where xx is the layout number required. I don't know if this is possible, or wise.

cheers,

Andy

[frosch]

CB 28 already gets the layout in var 86
Just forbid building certain layouts. The game will try other ones.

[maquinista]

It would be interesting to have this feature in the industry construction window.

[andythenorth]

http://bugs.openttd.org/task/4131