a8376e982e
# Objective Renames `Timer::finished` and `Timer::paused` to `Timer::is_finished` and `Timer::is_paused` to align the public APIs for `Time`, `Timer`, and `Stopwatch`. Fixes #19110
53 lines
1.6 KiB
Rust
53 lines
1.6 KiB
Rust
//! Demonstrates the creation and registration of a custom plugin.
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//!
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//! Plugins are the foundation of Bevy. They are scoped sets of components, resources, and systems
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//! that provide a specific piece of functionality (generally the smaller the scope, the better).
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//! This example illustrates how to create a simple plugin that prints out a message.
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use bevy::prelude::*;
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use core::time::Duration;
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fn main() {
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App::new()
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// plugins are registered as part of the "app building" process
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.add_plugins((
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DefaultPlugins,
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PrintMessagePlugin {
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wait_duration: Duration::from_secs(1),
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message: "This is an example plugin".to_string(),
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},
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))
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.run();
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}
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// This "print message plugin" prints a `message` every `wait_duration`
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struct PrintMessagePlugin {
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// Put your plugin configuration here
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wait_duration: Duration,
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message: String,
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}
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impl Plugin for PrintMessagePlugin {
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// this is where we set up our plugin
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fn build(&self, app: &mut App) {
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let state = PrintMessageState {
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message: self.message.clone(),
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timer: Timer::new(self.wait_duration, TimerMode::Repeating),
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};
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app.insert_resource(state)
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.add_systems(Update, print_message_system);
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}
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}
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#[derive(Resource)]
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struct PrintMessageState {
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message: String,
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timer: Timer,
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}
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fn print_message_system(mut state: ResMut<PrintMessageState>, time: Res<Time>) {
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if state.timer.tick(time.delta()).is_finished() {
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info!("{}", state.message);
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}
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}
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