Wider Support for Partial Sprite Replacement via Action5

[Zephyris]

Is there any particular reason for the partial support for partial replacement of OpenTTD specific sprites via action5? E.g. it is not possible to only replace the electric rail GUI elements via the following code:

Code: Select all

  215 * 4     05 85 04 25
  216 sprites/biggui5.pcx 642 712 09 40 40 0 0
  217 sprites/biggui5.pcx 690 712 09 40 40 0 0
  218 sprites/biggui5.pcx 738 712 09 40 40 0 0
  219 sprites/biggui5.pcx 2 776 09 40 40 0 0
  220 * 4     05 85 01 2D
  221 sprites/biggui5.pcx 66 776 09 40 40 0 0

I could really use wider support for partial sprite replacement for my double size gui grf.

[FooBar]

Here's a little something on this subject as well: http://www.tt-forums.net/viewtopic.php?p=608268#p608268

[maquinista]

I have the same problem. It would be a nice feature.

[Zephyris]

*Nudge* Is there any sign of support for this? I would hope it would be quite simple...