mirror of
https://github.com/bevyengine/bevy
synced 2024-11-23 13:13:49 +00:00
1ba7429371
# Objective Provide a starting point for #3951, or a partial solution. Providing a few comment blocks to discuss, and hopefully find better one in the process. ## Solution Since I am pretty new to pretty much anything in this context, I figured I'd just start with a draft for some file level doc blocks. For some of them I found more relevant details (or at least things I considered interessting), for some others there is less. ## Changelog - Moved some existing comments from main() functions in the 2d examples to the file header level - Wrote some more comment blocks for most other 2d examples TODO: - [x] 2d/sprite_sheet, wasnt able to come up with something good yet - [x] all other example groups... Also: Please let me know if the commit style is okay, or to verbose. I could certainly squash these things, or add more details if needed. I also hope its okay to raise this PR this early, with just a few files changed. Took me long enough and I dont wanted to let it go to waste because I lost motivation to do the whole thing. Additionally I am somewhat uncertain over the style and contents of the commets. So let me know what you thing please.
47 lines
1.5 KiB
Rust
47 lines
1.5 KiB
Rust
//! Demonstrates the creation and registration of a custom plugin.
|
|
//!
|
|
//! Plugins are the foundation of Bevy. They are scoped sets of components, resources, and systems
|
|
//! that provide a specific piece of functionality (generally the smaller the scope, the better).
|
|
//! This example illustrates how to create a simple plugin that prints out a message.
|
|
|
|
use bevy::{prelude::*, utils::Duration};
|
|
|
|
fn main() {
|
|
App::new()
|
|
.add_plugins(DefaultPlugins)
|
|
// plugins are registered as part of the "app building" process
|
|
.add_plugin(PrintMessagePlugin {
|
|
wait_duration: Duration::from_secs(1),
|
|
message: "This is an example plugin".to_string(),
|
|
})
|
|
.run();
|
|
}
|
|
|
|
// This "print message plugin" prints a `message` every `wait_duration`
|
|
pub struct PrintMessagePlugin {
|
|
// Put your plugin configuration here
|
|
wait_duration: Duration,
|
|
message: String,
|
|
}
|
|
|
|
impl Plugin for PrintMessagePlugin {
|
|
// this is where we set up our plugin
|
|
fn build(&self, app: &mut App) {
|
|
let state = PrintMessageState {
|
|
message: self.message.clone(),
|
|
timer: Timer::new(self.wait_duration, true),
|
|
};
|
|
app.insert_resource(state).add_system(print_message_system);
|
|
}
|
|
}
|
|
|
|
struct PrintMessageState {
|
|
message: String,
|
|
timer: Timer,
|
|
}
|
|
|
|
fn print_message_system(mut state: ResMut<PrintMessageState>, time: Res<Time>) {
|
|
if state.timer.tick(time.delta()).finished() {
|
|
info!("{}", state.message);
|
|
}
|
|
}
|