I could not reproduce on other paksets, this only shows in pak96.comic. But since the water tiles were not modified from 0.4.10 and it doesn't show in some older paksets I find it to be a bug on Simutrans.
I'm not sure of what revision started this bug, but it started on December.
Here's a gif of what's happening:
(http://imageshack.com/a/img833/8913/db5.gif)
That seems rather the waves hitting the shore... ;D
Prissi introduced animations for flat shorelines...
Quote from: kierongreen on December 09, 2013, 01:55:19 AM
Prissi introduced animations for flat shorelines...
You gotta be kiddin'. D:
Looks like some images are not full size 96x96 but some code assumes this.
Yes, flat shore lines are animated now. Animation of water on sloped beaches is not implemented.
Seems that the animated water graphics do not perfectly match the shape of the standard 96 flat ground tile (from the texture-pak).
Do you have the sources of the animation?
No, you'll need to ask sojo.