update example to reference loaded font

Author: dsgallups

examples/2d/system_fonts.rs

@@ -1,17 +1,23 @@
 //! Uses a system font to display text
-use bevy::prelude::*;
+use std::time::Duration;
+
+use bevy::{prelude::*, time::common_conditions::once_after_delay};
 
 fn main() {
     App::new()
         .add_plugins(DefaultPlugins)
         .add_systems(Startup, setup)
+        .add_systems(
+            Update,
+            add_default_font_text.run_if(once_after_delay(Duration::from_secs(1))),
+        )
         .run();
 }
 
-fn setup(mut commands: Commands, mut fonts: ResMut<Assets<Font>>) {
+fn setup(mut commands: Commands, mut fonts: ResMut<Assets<Font>>, asset_server: Res<AssetServer>) {
     commands.spawn(Camera2d);
 
-    let font = fonts.add(Font::Query {
+    let system_font = fonts.add(Font::Query {
         families: vec![
             Family::Name("Liberation Sans".to_string()),
             Family::Name("Ubuntu".to_string()),
@@ -23,22 +29,28 @@ fn setup(mut commands: Commands, mut fonts: ResMut<Assets<Font>>) {
     });
 
     commands.spawn((
-        Node {
-            width: percent(100.),
-            height: percent(100.),
-            display: Display::Flex,
-            padding: UiRect::all(px(20.)),
-            justify_content: JustifyContent::Center,
-            ..default()
-        },
-        children![(
-            Text::new("System Font UI Text"),
-            TextFont::default().with_font(font.clone()),
-        )],
+        Text2d::new("System Font Text"),
+        TextFont::default().with_font(system_font),
+        Transform::from_xyz(0., 100., 0.),
     ));
 
     commands.spawn((
-        Text2d::new("System Font 2D Text"),
-        TextFont::default().with_font(font),
+        Text2d::new("Fira Sans Bold Text"),
+        TextFont::default().with_font(asset_server.load("fonts/FiraSans-Bold.ttf")),
+    ));
+}
+
+fn add_default_font_text(mut commands: Commands, mut fonts: ResMut<Assets<Font>>) {
+    let default_font = fonts.add(Font::Query {
+        families: vec![Family::Name("Fira Sans".to_string())],
+        weight: Weight::BOLD,
+        stretch: Stretch::Normal,
+        style: Style::Normal,
+    });
+
+    commands.spawn((
+        Text2d::new("Queried Fira Sans Text"),
+        TextFont::default().with_font(default_font),
+        Transform::from_xyz(0., -100., 0.),
     ));
 }