frosch wrote:

Are you using child sprites? Child sprites are not allowed to extent over the parent sprite. (Independent of any bounding boxes)
I.e. Childsprites are drawn if and only if the parent sprite is drawn. The parent sprite is drawn if its pixels (no matter if transparent or not) overlap with the area that is requested to be redrawn.

If that is the case you have to extent the parent sprite with transparent pixels, so all childsprites are inside of it.

This comment was imported from FlySpray: https://bugs.openttd.org/task/2079#comment4294

George wrote:

No. I use a sprite with its' own bounding box.

I know a problem with child sprites. It is not this case here.

// 2x1
491 * 58 02 07 E0 05
3D 05 00 00
00 80 00 80 00 00 00 10 01 06
01 80 00 80 10 00 00 01 10 06
08 80 0D 83 00 07 00 01 01 04
08 80 0B 83 03 07 00 01 01 04
2F 0C 00 00 0C 04 00 03 07 08
492 * 98 02 07 E1 09
3E 05 00 00
00 80 00 80 00 00 00 10 01 06
01 80 00 80 00 00 00 01 10 06
04 80 0B 83 01 0A 00 02 06 04
04 80 0D 83 01 03 00 02 06 04
12 80 00 80 03 01 00 06 03 07
(*) 16 80 00 80 0A 01 00 10 03 0B
08 80 0F 83 0D 07 00 01 01 04
06 00 00 80 03 0F 00 02 01 0F
1A 00 00 80 0D 0D 00 06 03 05

as you can see for (*), it is one tile long, but located in the middle of the tile, that makes it to cover two tiles.

This comment was imported from FlySpray: https://bugs.openttd.org/task/2079#comment4295

frosch wrote:

Ok, I took a second look at the pictures. As you can see the sprite is clipped at about the left corner of the ground sprite.

So this is basically a feature request to implement action D vars 0x93 to 0x96, though I don't know anyone, who is planning to implement it.

For now you will have to split the sprite up and use two bounding boxes, or (as the sprite does not seem to extent over the right corner of the other tile) move the sprite into the spritelayout of the other tile.

This comment was imported from FlySpray: https://bugs.openttd.org/task/2079#comment4305

George wrote:

D vars 0x93 to 0x96,

aren't they 32 by default?

This comment was imported from FlySpray: https://bugs.openttd.org/task/2079#comment4306

frosch wrote:

IIRC the width of a tile is about 64. I.e. from the north corner to the left border 32... So, yes, 32 seems to be the default.

This comment was imported from FlySpray: https://bugs.openttd.org/task/2079#comment4307

George wrote:

Does that mean that they exist, but can't be changed?

This comment was imported from FlySpray: https://bugs.openttd.org/task/2079#comment4309

frosch wrote:

No, I just guessed where the 32 comes from, and made the assumption that default TTDP behaviour matches OTTD behaviour

This comment was imported from FlySpray: https://bugs.openttd.org/task/2079#comment4312

andythenorth closed the ticket.

Reason for closing: Won't implement

Flyspray clean up: much more than 5 years old, and not obvious what should be done with this next, so closing. If this offends, discuss with andythenorth in irc. Thanks.

This comment was imported from FlySpray: https://bugs.openttd.org/task/2079