George wrote:

to be more exact. CB 2D should be applied when a train starts unloading at station and when finishes loading at station.
Inside CB 2D it is required to have the possibility to check this status (started unloading / finished loading)

This comment was imported from FlySpray: https://bugs.openttd.org/task/5669#comment12438

George wrote:

[21:46:13] tbh, I read it and don't quite understand description, intention and problem
[21:47:05] Let me explain
[21:47:26] Currently every locomotive is drawn 3 times
[21:48:09] when all lights are off, when main lights are off, secondary are on, and when all of them are on
[21:52:09] it's too brief, at least for me. Explain the problem in more detail, please
[21:52:46] So, as started we have every locomotive drawn several times
[21:53:03] where? Openttd only draws it once
[21:53:16] I know
[21:53:48] And we choose the sprite group to display according to current speed and state
[21:54:47] the difference between these views are several pixels only (lights)
[21:55:17] I made a test and found, that we can have only one sprite group, while lights are drawn with some unused colours
[21:55:30] and do a colour change with CB 2D
[21:55:48] The idea is nice but it has a huge problem
[21:56:05] CB 2D happens every 32 days or in depot
[21:56:30] and you can't use the start/stop variable or speed check?
[21:56:47] I use speed check
[21:56:56] but it does not work
[21:57:08] because CB 2D result is cashed
[21:57:48] so inside CB 2D code I check it, but OTTD does not call CB 2D
[21:58:15] so I need CB 2D happen very often (when speed changes)
[21:59:30] Alternative is to request CB 2D call for the cases when I really change the result (at start|stop)
[21:59:42] but using different sprites is no issue really
[21:59:49] This what I requested in the feature request
[22:00:39] So you say that making the GRF 3 times smaller to save the RAM is USELESS?
[22:01:02] Because OTTD has to load 3 time more sprites

This comment was imported from FlySpray: https://bugs.openttd.org/task/5669#comment12441

George wrote:

This comment was imported from FlySpray: https://bugs.openttd.org/task/5669#comment12442

frosch closed the ticket.

Reason for closing: Implemented

in r25648

This comment was imported from FlySpray: https://bugs.openttd.org/task/5669

frosch wrote:

The recolouring should now also be updated when leaving a station with r26027.

This comment was imported from FlySpray: https://bugs.openttd.org/task/5669#comment12793