Lemma Soft Forums

Posted: **Fri Dec 24, 2021 10:18 pm**

A way to display images (or other displayables) with a DDLC-like glitch effect offsetting slices of the image laterally and optionally adding chromatic aberration effects on the glitched slices.

The project is here.

glitch is a function that can be used as a transform (because it takes a displayable as lone argument and returns a displayable).
Its 6 parameters are :
- child : the displayable (~= image) on which the effect is applied. This is the only required argument.
- randomobj : the random object used to generate the slices heights and offsets.
- chroma : boolean indicating whether or not to apply chromatic aberration effects to the glitched tranches. Defaults to True if the system can manage it (which needs gl2 or another model-based renderer to work).
- minbandheight : minimum height of a slice, in pixels. Defaults to 1.
- offset : a positive integer. The actual offset given to a glitched slice will be comprised between -offset and offset. Defaults to 30.
- crop : boolean indicating whether or not to crop the resulting image to make it fit the size of the original image. Defaults to False.

Then, you can define your glitched image as an image to show afterward, using image glitched = glitch("beautifulcharacter angry"), or you can also directly show it using show expression glitch("beautifulcharacter angry") as beautifulcharacter (I strongly recommand using the as clause).
You can also apply it as a transform, with show eileen at glitch or show eileen at renpy.curry(glitch)(chroma=False) or even show layer master at glitch.

The chromatic_offset transform can be used on a standalone basis, especially to apply it to the master layer with show layer master at chromatic_offset.
The aberration effect is applied laterally, on a technical note the the red, green and blue layers of the image are stretch horizontally and then offset laterally with different values.
It takes one optional parameter, chzoom, which determines by exactly how much the layers are stretched. At 1.0 the layers are not streched and the effect is invisible, at lower that 1.0 the left and right boundaries are visible on the sides of the image, so advised values are greater than but close to 1.0. Default is 1.01.

Posted: **Sat Jan 29, 2022 7:33 pm**

I absolutely love this effect, but I seem to be having trouble running it as an image definition or show it as an expression, and both of them seem to be tied to the issue that it can't process the image in the init phase?

I wrote up a bug report on github, but just in case, I'll include the important traceback lines here:

EXPRESSION:

Code: Select all

  File "game/script.rpy", line 14, in script
    show expression glitch("eileen happy") as eileen
  File "renpy/ast.py", line 1197, in execute
    show_imspec(self.imspec, atl=getattr(self, "atl", None))
  File "renpy/ast.py", line 1153, in show_imspec
    expression = renpy.python.py_eval(expression)
  File "renpy/python.py", line 2276, in py_eval
    return py_eval_bytecode(code, globals, locals)
  File "renpy/python.py", line 2269, in py_eval_bytecode
    return eval(bytecode, globals, locals)
  File "game/script.rpy", line 14, in <module>
    show expression glitch("eileen happy") as eileen
  File "game/glitch.rpy", line 16, in glitch
    cwidth, cheight = renpy.render(child, 0, 0, 0, 0).get_size()
  File "render.pyx", line 170, in renpy.display.render.render
  File "render.pyx", line 222, in renpy.display.render.render
AttributeError: 'unicode' object has no attribute 'style'

And for the image definition:

Code: Select all

Full traceback:
  File "renpy/bootstrap.py", line 331, in bootstrap
    renpy.main.main()
  File "renpy/main.py", line 560, in main
    renpy.game.context().run(node)
  File "game/script.rpy", line 8, in script
    image glitched = glitch("eileen happy")
  File "game/script.rpy", line 8, in script
    image glitched = glitch("eileen happy")
  File "renpy/ast.py", line 1027, in execute
    img = renpy.python.py_eval_bytecode(self.code.bytecode)
  File "renpy/python.py", line 2269, in py_eval_bytecode
    return eval(bytecode, globals, locals)
  File "game/script.rpy", line 8, in <module>
    image glitched = glitch("eileen happy")
  File "game/glitch.rpy", line 16, in glitch
    cwidth, cheight = renpy.render(child, 0, 0, 0, 0).get_size()
  File "render.pyx", line 170, in renpy.display.render.render
  File "render.pyx", line 205, in renpy.display.render.render
Exception: Displayables may not be rendered during the init phase.

Code: Select all

Windows-10-10.0.19041
Ren'Py 7.4.11.2266
SampleScript 1.0
Sat Jan 29 18:19:42 2022

Posted: **Mon Jan 31, 2022 3:06 pm**

Saw the issue first, lol !
For those wondering, it has partially been solved, partially been issued a workaround in the readme.

Posted: **Sun Aug 07, 2022 5:27 am**

Thank you so much for this script! Works flawlessly.

I want to find out if there is any way to make a glitch animation? I just thought she was here. (I didn't pass DDLC, so I don't know what this effect looks like there)

Posted: **Sat Aug 27, 2022 11:53 am**

Yes, it's possible. You can use ATL for that, for example:

Code: Select all

image eileen glitched:
    glitch("eileen happy", randomkey=23464843)
    pause 0.2
    glitch("eileen happy", randomkey=3747685)
    pause 0.1
    glitch("eileen happy", randomkey=85386865)
    pause 0.3
    repeat

Use the randomkey parameter if you want to make the animation periodic : each value for randomkey will generate one specific glitch.
If you want the glitch to be randomly generated every time the animation reaches a glitch, you can remove the randomkey argument.

Posted: **Wed Aug 31, 2022 10:31 am**

Gouvernathor wrote: ↑
Sat Aug 27, 2022 11:53 am
Yes, it's possible. You can use ATL for that, for example:
Code: Select all
image eileen glitched:
    glitch("eileen happy", randomkey=23464843)
    pause 0.2
    glitch("eileen happy", randomkey=3747685)
    pause 0.1
    glitch("eileen happy", randomkey=85386865)
    pause 0.3
    repeat
Use the randomkey parameter if you want to make the animation periodic : each value for randomkey will generate one specific glitch.
If you want the glitch to be randomly generated every time the animation reaches a glitch, you can remove the randomkey argument.

Thank you very much! I'll try it.

Lemma Soft Forums

ChromaGlitch : show images with a DDLC-like glitch effect

ChromaGlitch : show images with a DDLC-like glitch effect

Re: ChromaGlitch : show images with a DDLC-like glitch effect

Re: ChromaGlitch : show images with a DDLC-like glitch effect

Re: ChromaGlitch : show images with a DDLC-like glitch effect

Re: ChromaGlitch : show images with a DDLC-like glitch effect

Re: ChromaGlitch : show images with a DDLC-like glitch effect