fix depenetration panic (#98)

crates/hedz_reloaded/src/client/camera.rs

@@ -6,9 +6,8 @@ use crate::{
     physics_layers::GameLayer,
     player::LocalPlayer,
 };
-use avian3d::prelude::SpatialQuery;
 use avian3d::prelude::{
-    Collider, LayerMask, PhysicsLayer as _, ShapeCastConfig, SpatialQueryFilter,
+    Collider, LayerMask, PhysicsLayer as _, ShapeCastConfig, SpatialQuery, SpatialQueryFilter,
 };
 use bevy::prelude::*;
 

crates/hedz_reloaded/src/client/ui/mod.rs

@@ -4,9 +4,8 @@ mod heads_ui;
 mod pause;
 
 pub use backpack_ui::{BACKPACK_HEAD_SLOTS, BackpackUiState};
-pub use heads_ui::{HeadsImages, UiHeadState};
-
 use bevy::prelude::*;
+pub use heads_ui::{HeadsImages, UiHeadState};
 
 pub fn plugin(app: &mut App) {
     app.add_plugins(heads_ui::plugin);

crates/hedz_reloaded/src/player.rs

@@ -23,6 +23,7 @@ use bevy::{
 };
 use bevy_replicon::prelude::{ClientId, Replicated, SendMode, ServerTriggerExt, ToClients};
 use happy_feet::debug::DebugInput;
+use rand::Rng;
 use serde::{Deserialize, Serialize};
 
 #[derive(Component, Default, Serialize, Deserialize, PartialEq)]
@@ -69,7 +70,15 @@ pub fn spawn(
 ) -> Option<Entity> {
     let spawn = query.iter().next()?;
 
-    let transform = Transform::from_translation(spawn.translation + Vec3::new(0., 3., 0.));
+    // This offset helps prevent players from getting stuck inside each other on spawn and causing a perpetual
+    // motion machine.
+    let random_offset = Vec3::new(
+        rand::thread_rng().gen_range(-0.01..0.01),
+        0.0,
+        rand::thread_rng().gen_range(-0.01..0.01),
+    );
+    let transform =
+        Transform::from_translation(spawn.translation + Vec3::new(0., 3., 0.) + random_offset);
 
     let id = commands
         .spawn((

crates/hedz_reloaded/src/protocol/events.rs

@@ -1,8 +1,7 @@
+use crate::protocol::PlayerId;
 use bevy::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::protocol::PlayerId;
-
 // TODO: remove in favour of client side change detection
 #[derive(Clone, Event, Serialize, Deserialize, PartialEq)]
 pub struct ClientHeadChanged {