You have to create a base image with same size as the animation.
Afaik. there is no easy way to fill an image with a pattern, so you have to combine the static png 16 times.
You can try something like:
Code: Select all
name = "[combine:16x256:0,0=default_gravel.png"..
":0,16=default_gravel.png"..
":0,32=default_gravel.png"..
":0,48=default_gravel.png"..
":0,64=default_gravel.png"..
":0,80=default_gravel.png"..
":0,96=default_gravel.png"..
":0,112=default_gravel.png"..
":0,128=default_gravel.png"..
":0,144=default_gravel.png"..
":0,160=default_gravel.png"..
":0,176=default_gravel.png"..
":0,192=default_gravel.png"..
":0,208=default_gravel.png"..
":0,224=default_gravel.png"..
":0,240=default_gravel.png^[mask:default_water_source_animated.png",
The result looks not very nice, though. But this can be used as a start...
Edit: looks much better if you remove the "[mask:" operator.
Hmmmm.....