cyber_rider/src/lib.rs

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Rust
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use bevy::{
ecs::schedule::StageLabel,
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prelude::{ResMut, SystemLabel, Vec3, Windows},
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};
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pub mod action;
pub mod camera;
pub mod colliders;
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pub mod glamor;
pub mod input;
pub mod lights;
pub mod static_geometry;
pub mod ui;
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#[derive(Clone, Debug, Hash, PartialEq, Eq, SystemLabel, StageLabel)]
pub enum Label {
Geometry,
Glamor,
Input,
Action,
}
pub fn disable_mouse_trap(mut windows: ResMut<Windows>) {
let window = windows.get_primary_mut().unwrap();
window.set_cursor_lock_mode(false);
window.set_cursor_visibility(true);
}
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pub fn random_unit_vec(r: &mut impl rand::prelude::Rng) -> Vec3 {
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// https://mathworld.wolfram.com/SpherePointPicking.html
// Marsaglia (1972) for picking x1 and x2 from (-1, 1) and generating surface
// points directly if their sum is less than 1.
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let mut x1: f32 = 0.0;
let mut x2: f32 = 0.0;
let mut ssum = std::f32::MAX;
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while ssum >= 1.0 {
x1 = r.gen_range(-1.0..=1.0);
x2 = r.gen_range(-1.0..=1.0);
ssum = x1.powi(2) + x2.powi(2);
}
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let sqrt = (1.0 - ssum).sqrt();
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let x = 2.0 * x1 * sqrt;
let y = 2.0 * x2 * sqrt;
let z = 1.0 - 2.0 * ssum;
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Vec3::new(x, y, z).normalize()
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}