MichaelBradley/distributed_physics_test
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Make more random

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At least, make the stuff that doesn't need to be deterministic non-deterministic
This commit is contained in:
Michael Bradley 2025-05-19 21:23:58 -04:00
parent 245dfde91e
commit fc95857824
Signed by: MichaelBradley
SSH key fingerprint: SHA256:BKO2eI2LPsCbQS3n3i5SdwZTAIV3F1lHezR07qP+Ob0
4 changed files with 18 additions and 12 deletions
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2
Cargo.toml
View file

@ -37,5 +37,5 @@ log = { version = "*", features = [
"max_level_debug", "max_level_debug",
"release_max_level_warn", "release_max_level_warn",
] } ] }
rand = { version = "0.9.1", default-features = false, features = ["std"] } rand = { version = "0.9.1", default-features = false, features = ["std", "thread_rng"] }
wyrand = "0.3.2" wyrand = "0.3.2"

3
src/game/mod.rs
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@ -1,4 +1,5 @@
pub mod objects; mod objects;
mod rng;
pub mod runtime; pub mod runtime;
pub mod seed; pub mod seed;
pub mod setup; pub mod setup;

7
src/game/rng.rs Normal file
View file

@ -0,0 +1,7 @@
use rand::random;
use wyrand::WyRand;
/// Initialize a `WyRand` using `rand`'s thread-local rng
pub fn thread_rng() -> WyRand {
WyRand::new(random())
}

18
src/game/setup.rs
View file

@ -9,10 +9,12 @@ use bevy::{
prelude::*, prelude::*,
}; };
use bevy_rand::prelude::{GlobalEntropy, WyRand}; use bevy_rand::prelude::{GlobalEntropy, WyRand};
use rand::Rng; use rand::Rng as _;
use wyrand::WyRand as LocalRng;
use super::objects::{Ball, Player, Wall}; use super::{
objects::{Ball, Player, Wall},
rng::thread_rng,
};
const BALL_COUNT: u8 = 32; const BALL_COUNT: u8 = 32;
const BALL_SIZES: Range<f32> = 10.0..25.0; const BALL_SIZES: Range<f32> = 10.0..25.0;
@ -57,7 +59,7 @@ pub fn setup_balls(
mut meshes: ResMut<Assets<Mesh>>, mut meshes: ResMut<Assets<Mesh>>,
region: Res<PlayableArea>, region: Res<PlayableArea>,
) { ) {
let mut random = LocalRng::new(Default::default()); let mut random = thread_rng();
for _ in 0..BALL_COUNT { for _ in 0..BALL_COUNT {
let circle = Circle::new(random.random_range(BALL_SIZES)); let circle = Circle::new(random.random_range(BALL_SIZES));
commands.spawn(( commands.spawn((
@ -66,12 +68,8 @@ pub fn setup_balls(
Mesh2d(meshes.add(circle)), Mesh2d(meshes.add(circle)),
MeshMaterial2d(materials.add(Color::from(RED_400))), MeshMaterial2d(materials.add(Color::from(RED_400))),
Transform::from_xyz( Transform::from_xyz(
random.random_range( random.random::<f32>() * (region.0 - 2.0 * circle.radius) + circle.radius,
(-region.0 / 2.0 + circle.radius)..(region.0 / 2.0 - circle.radius), random.random::<f32>() * (region.1 - 2.0 * circle.radius) + circle.radius,
),
random.random_range(
(-region.1 / 2.0 + circle.radius)..(region.1 / 2.0 - circle.radius),
),
0.0, 0.0,
), ),
)); ));