bevy/crates/bevy_dynamic_plugin/src/loader.rs
Carter Anderson 74cb13aa70 update libloading (#1543)
Alternative to #1418
2021-03-03 03:11:12 +00:00

26 lines
769 B
Rust

use libloading::{Library, Symbol};
use bevy_app::{AppBuilder, CreatePlugin, Plugin};
/// Dynamically links a plugin a the given path. The plugin must export the [CreatePlugin] function.
pub fn dynamically_load_plugin(path: &str) -> (Library, Box<dyn Plugin>) {
unsafe {
let lib = Library::new(path).unwrap();
let func: Symbol<CreatePlugin> = lib.get(b"_create_plugin").unwrap();
let plugin = Box::from_raw(func());
(lib, plugin)
}
}
pub trait DynamicPluginExt {
fn load_plugin(&mut self, path: &str) -> &mut Self;
}
impl DynamicPluginExt for AppBuilder {
fn load_plugin(&mut self, path: &str) -> &mut Self {
let (_lib, plugin) = dynamically_load_plugin(path);
plugin.build(self);
self
}
}