/// Common dumb xorshift32 randomizer
#[derive(Default, Clone, Copy, Debug)]
pub struct Prng(pub u16);
impl Prng {
pub fn get_random(mut v: u32) -> u32 {
v ^= v << 13;
v ^= v >> 17;
v ^= v << 5;
v
}
pub fn get_random_norm(v: u32) -> f32 {
(v & 0xffff) as f32 / 65536.0
}
}