在Bevy中读取鼠标点击的位置

use bevy::prelude::*;

fn main() {
    App::build()
        .add_plugins(DefaultPlugins)
        .add_startup_system(setup.system())
        .add_system(mouse_click_system.system())
        .run();
}

fn setup(commands: &mut Commands) {
    commands.spawn(Camera2dComponents::default());
}

fn mouse_click_system(
    mouse_button_input: Res<Input<MouseButton>>,
    mouse_position: Res<Events<CursorMoved>>,
) {
    if mouse_button_input.just_pressed(MouseButton::Left) {
        for event in mouse_position.get_reader().iter(&mouse_position) {
            println!("Mouse clicked at position: {:?}", event.position);
        }
    }
}