Scratch

s_federici wrote:

You are really doing an incredible job blob    thanks a lot for all this!

Why thank you!    have you been trying it?

Jwosty wrote:

Well this looks pretty interesting; another reason to learn Python xD

Absolutely!    Python's pretty nice; although I suspect Ruby's slightly nicer. And the Construct library is awesome for parsing stuff. 

It's certainly possible; what kind of input, and what kind of projects? 

You can do something like this (leaving out the web stuff):

from kurt.files import *
from kurt import Form
# (just do a single `from kurt import *` if you prefer)

picture_path = "users_picture.png"
text = """User's text.
Can be multiple lines, but doesn't have to be.
One issue is that Scratch doesn't seem to automatically wrap the text (ie. you 
have to insert line breaks yourself in all the right places, which is quite hard 
without rendering the text yourself at some point.
"""

text = text.replace("\r\n", "\n")
text = text.replace("\r", "\n")
text_lines = [unicode(line+"\r") for line in text.split("\n")] 
    # Format text for Scratch costume — I need to add something like this to 
    # Kurt itself at some point

project = ScratchProjectFile("original_project.sb")

image = project.sprites[0].costumes[0] # Adjust as necessary

image.textBox.lines = text_lines
image.form = Form.load_png(picture_path) # Replace costume with new

image.compositeForm = None # Scratch keeps a copy of the text rendered onto
                           # the image — deleting this will force Scratch
                           # to redraw the image

project.save("new_project.sb")
    # pass a path argument to save() saves with new name, so won't overwrite old
    # project. FYI, subsequent calls to project.save() will use the new path.

Just a quick note — you'll need to grab the dev branch of Kurt for now. It has loads of new stuff, like images; and I haven't quite gotten round to merging it back to master yet. 

File "/kurt/fixed_objects.py", line 663, in load_png
TypeError: can only extend array with array (not "int")

I used a different file, and that message isn't there, but kurt just hangs.

Wait! That's not true! It doesn't hang. It just takes a tremendously large time to process. The original file was 13 KB, and the image was a half a megabyte.
The output file was 31 megs.

Last edited by bobbybee (2012-06-14 16:13:04)

bobbybee wrote:

Wait! That's not true! It doesn't hang. It just takes a tremendously large time to process. The original file was 13 KB, and the image was a half a megabyte.
The output file was 31 megs.

How big is the image, dimensions-wise? Can you link it?

The Scratch format uses run-length encoding to compress the images. Kurt decompresses the images fine, but I haven't got it to compress them yet. If you open them in Scratch and save, it should fix.

* This means it stores the whole image in memory while it's processing it. That might be the cause of the delay...

I'll admit this isn't great for what you're trying to do; I hope to do some work on fixing it soon. 

Last edited by blob8108 (2012-06-14 16:23:56)

bobbybee wrote:

Dimensions? (gulps) Erm...in the thousands.

Why on earth would you want an image larger than 480x360 in a Scratch project...? 

With this fix down, I have gotten the sprites costumes to change right. How do I access the stages costumes?

project.stage.backgrounds

Pro tip: .images (rather than .costumes or .backgrounds) works for both sprites and stage, if you prefer.

Last edited by blob8108 (2012-06-14 16:39:44)

For some reason, the PNGs I make in PhotoShop are incompatible with Kurt (it was what was causing the original error)

I just tried. Didn't seem to make a difference 

Sure...