How do I use a BMFont as a text style property?

[fayknaim]

I've created a BMFont that I want to use as the font for a text statement in screen language.

The documentation explains how to do this: https://www.renpy.org/doc/html/style_pr ... perty-font

font - string
A string giving the name of the font used to render text.

For a TrueType font file, this is usually the name of the file containing the font (like "DejaVuSans.ttf"). To select a second font in a collection, this can be prefixed with a number and at sign (like "0@font.ttc" or "1@font.ttc"). For an image-based font, this should be the name used to register the font.

So I should be able to use the name of the BMFont that I registered, but this doesn't seem to work for me.

Here's an example:

Code: Select all

init python:
    renpy.register_bmfont("bmfont", 50, filename="gui/bmfont.fnt")

screen bmfont_text:
    text "hello world":
        align 0.5,0.5
        font "bmfont"
 
 label start:
    show screen bmfont_text
    pause
    return

Here's the traceback:

Code: Select all

I'm sorry, but an uncaught exception occurred.

While running game code:
  File "game/script.rpy", line 24, in script
    pause
  File "renpy/common/000statements.rpy", line 455, in execute_pause
    renpy.pause()
Exception: Could not find font u'bmfont'.

-- Full Traceback ------------------------------------------------------------

Full traceback:
  File "game/script.rpy", line 24, in script
    pause
  File "renpy/ast.py", line 2010, in execute
    self.call("execute")
  File "renpy/ast.py", line 1998, in call
    return renpy.statements.call(method, parsed, *args, **kwargs)
  File "renpy/statements.py", line 278, in call
    return method(parsed, *args, **kwargs)
  File "renpy/common/000statements.rpy", line 455, in execute_pause
    renpy.pause()
  File "renpy/exports.py", line 1561, in pause
    rv = renpy.ui.interact(mouse='pause', type='pause', roll_forward=roll_forward, pause=delay)
  File "renpy/ui.py", line 298, in interact
    rv = renpy.game.interface.interact(roll_forward=roll_forward, **kwargs)
  File "renpy/display/core.py", line 3276, in interact
    repeat, rv = self.interact_core(preloads=preloads, trans_pause=trans_pause, pause=pause, pause_start=pause_start, **kwargs)
  File "renpy/display/core.py", line 3793, in interact_core
    self.draw_screen(root_widget, fullscreen_video, (not fullscreen_video) or video_frame_drawn)
  File "renpy/display/core.py", line 2521, in draw_screen
    renpy.config.screen_height,
  File "render.pyx", line 492, in renpy.display.render.render_screen
  File "render.pyx", line 263, in renpy.display.render.render
  File "renpy/display/layout.py", line 814, in render
    surf = render(child, width, height, cst, cat)
  File "render.pyx", line 170, in renpy.display.render.render
  File "render.pyx", line 263, in renpy.display.render.render
  File "renpy/display/layout.py", line 814, in render
    surf = render(child, width, height, cst, cat)
  File "render.pyx", line 170, in renpy.display.render.render
  File "render.pyx", line 263, in renpy.display.render.render
  File "renpy/display/layout.py", line 814, in render
    surf = render(child, width, height, cst, cat)
  File "render.pyx", line 170, in renpy.display.render.render
  File "render.pyx", line 263, in renpy.display.render.render
  File "renpy/display/screen.py", line 681, in render
    child = renpy.display.render.render(self.child, w, h, st, at)
  File "render.pyx", line 170, in renpy.display.render.render
  File "render.pyx", line 263, in renpy.display.render.render
  File "renpy/display/layout.py", line 814, in render
    surf = render(child, width, height, cst, cat)
  File "render.pyx", line 170, in renpy.display.render.render
  File "render.pyx", line 263, in renpy.display.render.render
  File "renpy/text/text.py", line 2060, in render
    virtual_layout = Layout(self, width, height, renders, drawable_res=False, size_only=True)
  File "renpy/text/text.py", line 639, in __init__
    glyphs = ts.glyphs(s, self)
  File "renpy/text/text.py", line 248, in glyphs
    fo = font.get_font(self.font, self.size, self.bold, self.italic, 0, self.antialias, self.vertical, self.hinting, layout.oversample)
  File "renpy/text/font.py", line 699, in get_font
    face = load_face(fn)
  File "renpy/text/font.py", line 640, in load_face
    raise Exception("Could not find font {0!r}.".format(orig_fn))
Exception: Could not find font u'bmfont'.

Windows-10-10.0.19041
Ren'Py 7.4.8.1895
BMFont 1.0
Sat Oct  9 00:40:54 2021

Here is a separate post with more detail about the BMFont I'm using: viewtopic.php?f=8&t=63298

[jeffster]

Just as an experiment, did you try to use the font name without quotes?

Code: Select all

    font bmfont

[fayknaim]

That was a good experiment - but it looks like a similar error.

Code: Select all

I'm sorry, but an uncaught exception occurred.

While running game code:
  File "game/script.rpy", line 28, in script
    pause
  File "renpy/common/000statements.rpy", line 455, in execute_pause
    renpy.pause()
  File "game/script.rpy", line 13, in execute
    screen bmfont_text:
  File "game/script.rpy", line 13, in execute
    screen bmfont_text:
  File "game/script.rpy", line 14, in execute
    text "hello world":
  File "game/script.rpy", line 14, in keywords
    text "hello world":
  File "game/script.rpy", line 16, in <module>
    font bmfont
NameError: name 'bmfont' is not defined

-- Full Traceback ------------------------------------------------------------

Full traceback:
  File "game/script.rpy", line 28, in script
    pause
  File "renpy/ast.py", line 2010, in execute
    self.call("execute")
  File "renpy/ast.py", line 1998, in call
    return renpy.statements.call(method, parsed, *args, **kwargs)
  File "renpy/statements.py", line 278, in call
    return method(parsed, *args, **kwargs)
  File "renpy/common/000statements.rpy", line 455, in execute_pause
    renpy.pause()
  File "renpy/exports.py", line 1561, in pause
    rv = renpy.ui.interact(mouse='pause', type='pause', roll_forward=roll_forward, pause=delay)
  File "renpy/ui.py", line 298, in interact
    rv = renpy.game.interface.interact(roll_forward=roll_forward, **kwargs)
  File "renpy/display/core.py", line 3276, in interact
    repeat, rv = self.interact_core(preloads=preloads, trans_pause=trans_pause, pause=pause, pause_start=pause_start, **kwargs)
  File "renpy/display/core.py", line 3694, in interact_core
    root_widget.visit_all(lambda i : i.per_interact())
  File "renpy/display/core.py", line 568, in visit_all
    d.visit_all(callback, seen)
  File "renpy/display/core.py", line 568, in visit_all
    d.visit_all(callback, seen)
  File "renpy/display/core.py", line 568, in visit_all
    d.visit_all(callback, seen)
  File "renpy/display/screen.py", line 432, in visit_all
    callback(self)
  File "renpy/display/core.py", line 3694, in <lambda>
    root_widget.visit_all(lambda i : i.per_interact())
  File "renpy/display/screen.py", line 443, in per_interact
    self.update()
  File "renpy/display/screen.py", line 631, in update
    self.screen.function(**self.scope)
  File "game/script.rpy", line 13, in execute
    screen bmfont_text:
  File "game/script.rpy", line 13, in execute
    screen bmfont_text:
  File "game/script.rpy", line 14, in execute
    text "hello world":
  File "game/script.rpy", line 14, in keywords
    text "hello world":
  File "game/script.rpy", line 16, in <module>
    font bmfont
NameError: name 'bmfont' is not defined

Windows-10-10.0.19041
Ren'Py 7.4.8.1895
BMFont 1.0
Sat Oct  9 09:44:54 2021

The BMFont is definitely registered - I can use it as the font of a Character to stylize the dialogue text.

[PyTom]

You want to put the name in quotes.

Code: Select all

font "bmfont"
[/quote]

Or whatever you have it registered as. 

BMFonts are kind of a bad idea by modern standards, as they blur out when the window is scaled.

[PyTom]

You want to put the name in quotes.

Code: Select all

font "bmfont"

Or whatever you have it registered as.

BMFonts are kind of a bad idea by modern standards, as they blur out when the window is scaled.

[fayknaim]

Unfortunately this doesn't work for me. I started with using "bmfont" in double quotes, as written in the original post. Removing the double quotes was only a later experiment.

I see that using a BMFont in Ren'Py is not advised. Although I haven't used it much, the downsides are apparent. Still, for my purposes, I would like to play around with it - at least to get the basics down.