5 releases
0.2.0 | Jul 22, 2024 |
---|---|
0.1.3 | Jul 6, 2024 |
0.1.2 | Jul 5, 2024 |
0.1.1 | Jul 5, 2024 |
0.1.0 | Jul 4, 2024 |
#281 in Game dev
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Bevy Pxtxt
Call it what you want — "pixel font," "image font," "texture font," etc. Either way, this library has it. bevy_pxtxt
allows users to create fonts and render text based on images they draw themself.
The images by default are .png
files, but .bmp
, .jpeg
, .gif
, or .tiff
can be used with their corresponding feature flags.
Example
assets/moonshock.ron
(
name: "Moonshock",
image: "moonshock.png",
glyph_width: Varied (
max: 5,
min: 1,
),
spacing: 1,
ascender: 7,
descender: 2,
)
examples/sections.rs
use bevy::prelude::*;
use bevy_asset_loader::asset_collection::{AssetCollection, AssetCollectionApp};
use bevy_pxtxt::{plugin::PxtxtPlugin, pxfont::PxFont, pxtext::{PxText, PxTextBundle, PxTextSection}};
#[derive(AssetCollection, Resource)]
struct PxFontCollection {
#[asset(path = "moonshock.ron")]
pub moonshock: Handle<PxFont>,
}
fn main() {
App::new()
.add_plugins((DefaultPlugins, PxtxtPlugin::default()))
.init_collection::<PxFontCollection>()
.insert_resource(Msaa::Off)
.add_systems(Startup, setup)
.run();
}
fn setup(
fonts: Res<PxFontCollection>,
mut commands: Commands,
) {
commands.spawn(Camera2dBundle::default());
commands.spawn(PxTextBundle {
text: PxText::from_sections(
vec![
PxTextSection::new("Here's a ")
.with_color(Color::WHITE),
PxTextSection::new("c")
.with_color(Color::hsl(0., 0.9, 0.7)).underlined(),
PxTextSection::new("o")
.with_color(Color::hsl(70., 0.9, 0.7)).underlined(),
PxTextSection::new("l")
.with_color(Color::hsl(170., 0.9, 0.7)).underlined(),
PxTextSection::new("o")
.with_color(Color::hsl(220., 0.9, 0.7)).underlined(),
PxTextSection::new("r")
.with_color(Color::hsl(280., 0.9, 0.7)).underlined(),
PxTextSection::new("ful example of some pixel text.\n\n")
.with_color(Color::WHITE),
PxTextSection::new("(Using sections for different colors)")
.with_color(Color::GRAY),
], fonts.moonshock.clone()
).with_line_spacing(5),
transform: Transform::from_scale(Vec3::splat(4.0)),
..Default::default()
});
}
Result:
PxFontData
Files
Fonts are loaded onto PxFont
s, which uses PxFontData
for deserialization. This is the struct that the .ron
files write.
Required Fields:
name
- the name of the fontimage
- the path to the image of the font, relative to theassets
folderglyph_width
- width of each characterVaried
- automatically detect the width of characters between amax
andmin
valueMonospace
- all characters are the same width
ascender
- number of pixels above the base linedescender
- number of pixels below the base line
Optional Fields:
char_layout
- what characters are displayed on the imageStartingAt
- the characters start at the given character and continue in order of ascending unicode valueRanges
- the characters are given as a series of rangesListed
- the characters are individually listed- default:
StartingAt(' ')
spacing
- space between each character within a word- default:
1
- default:
padding
- padding between characters in the image- default:
(0, 0)
- default:
Input
Sections with can receive events for left clicks, right clicks, and hovering. PickableText
senses these events, when the child of an entity with PxText
.
To receive these events, use EventReader<PxTextEvent>
(read up on events).
Examples
See examples/bounded.rs
for how bounding boxes can be used.
See examples/picking.rs
for how input can be used.
See examples/sections.rs
(above as well) for how different sections can be used.
Compatibility
Bevy Pxtxt version 0.1
is comptabile with Bevy version 0.13
.
License
This library, including the examples and assets, is licensed under the MIT License.
Dependencies
~36–74MB
~1.5M SLoC