Reduce rand::thread_rng calls, document MeleeConstructor scaled field more, remove extra stances.get() in hud/mod.rs

common/src/combat.rs

@@ -23,17 +23,16 @@ use crate::{
     util::Dir,
 };
 
-#[cfg(not(target_arch = "wasm32"))]
-use rand::{thread_rng, Rng};
-
 use serde::{Deserialize, Serialize};
 
 use crate::{comp::Group, resources::Time};
 #[cfg(not(target_arch = "wasm32"))]
-use specs::{saveload::MarkerAllocator, Entity as EcsEntity, ReadStorage};
-#[cfg(not(target_arch = "wasm32"))]
-use std::ops::{Mul, MulAssign};
-#[cfg(not(target_arch = "wasm32"))] use vek::*;
+use {
+    rand::Rng,
+    specs::{saveload::MarkerAllocator, Entity as EcsEntity, ReadStorage},
+    std::ops::{Mul, MulAssign},
+    vek::*,
+};
 
 #[cfg(not(target_arch = "wasm32"))]
 #[derive(Copy, Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
@@ -199,10 +198,10 @@ impl Attack {
         time: Time,
         mut emit: impl FnMut(ServerEvent),
         mut emit_outcome: impl FnMut(Outcome),
+        rng: &mut rand::rngs::ThreadRng,
     ) -> bool {
         // TODO: Maybe move this higher and pass it as argument into this function?
         let msm = &MaterialStatManifest::load().read();
-        let mut rng = thread_rng();
 
         let AttackOptions {
             target_dodging,

common/src/comp/ability.rs

@@ -2792,6 +2792,9 @@ impl From<(&CharacterAbility, AbilityInfo, &JoinData<'_>)> for CharacterState {
                     ability_info,
                 },
                 timer: Duration::default(),
+                // TODO: is this supposed to match the change in `requirements_paid` to just check
+                // `on_ground.is_non()` instead of checking vertical speed? Or is difference
+                // intended?
                 stage_section: if data.vel.0.z < -*vertical_speed || buildup_duration.is_none() {
                     StageSection::Movement
                 } else {

common/src/comp/melee.rs

@@ -53,7 +53,9 @@ impl Component for Melee {
 #[serde(deny_unknown_fields)]
 pub struct MeleeConstructor {
     pub kind: MeleeConstructorKind,
-    // This multiplied by a fraction is added to what is specified in kind
+    /// This multiplied by a fraction is added to what is specified in `kind`.
+    ///
+    /// Note, that this must be the same variant as what is specified in `kind`.
     pub scaled: Option<MeleeConstructorKind>,
     pub range: f32,
     pub angle: f32,

common/systems/src/beam.rs

@@ -14,7 +14,7 @@ use common::{
     GroupTarget,
 };
 use common_ecs::{Job, Origin, ParMode, Phase, System};
-use rand::{thread_rng, Rng};
+use rand::Rng;
 use rayon::iter::ParallelIterator;
 use specs::{
     saveload::MarkerAllocator, shred::ResourceId, Entities, Join, ParJoin, Read, ReadExpect,
@@ -99,7 +99,9 @@ impl<'a> System<'a> for Sys {
                         read_data.uid_allocator.retrieve_entity_internal(uid.into())
                     });
 
-                    let mut rng = thread_rng();
+                    // Note: rayon makes it difficult to hold onto a thread-local RNG, if grabbing
+                    // this becomes a bottleneck we can look into alternatives.
+                    let mut rng = rand::thread_rng();
                     if rng.gen_bool(0.005) {
                         server_events.push(ServerEvent::Sound {
                             sound: Sound::new(SoundKind::Beam, pos.0, 13.0, time),
@@ -261,6 +263,7 @@ impl<'a> System<'a> for Sys {
                                 *read_data.time,
                                 |e| server_events.push(e),
                                 |o| outcomes.push(o),
+                                &mut rng,
                             );
 
                             add_hit_entities.push((beam_owner, *uid_b));

common/systems/src/melee.rs

@@ -66,6 +66,7 @@ impl<'a> System<'a> for Sys {
     fn run(_job: &mut Job<Self>, (read_data, mut melee_attacks, outcomes): Self::SystemData) {
         let mut server_emitter = read_data.server_bus.emitter();
         let mut outcomes_emitter = outcomes.emitter();
+        let mut rng = rand::thread_rng();
 
         // Attacks
         for (attacker, uid, pos, ori, melee_attack, body) in (
@@ -239,6 +240,7 @@ impl<'a> System<'a> for Sys {
                         *read_data.time,
                         |e| server_emitter.emit(e),
                         |o| outcomes_emitter.emit(o),
+                        &mut rng,
                     );
 
                     if is_applied {

common/systems/src/projectile.rs

@@ -15,7 +15,7 @@ use common::{
 
 use common::vol::ReadVol;
 use common_ecs::{Job, Origin, Phase, System};
-use rand::{thread_rng, Rng};
+use rand::Rng;
 use specs::{
     saveload::MarkerAllocator, shred::ResourceId, Entities, Entity as EcsEntity, Join, Read,
     ReadExpect, ReadStorage, SystemData, World, WriteStorage,
@@ -71,6 +71,7 @@ impl<'a> System<'a> for Sys {
     ) {
         let mut server_emitter = read_data.server_bus.emitter();
         let mut outcomes_emitter = outcomes.emitter();
+        let mut rng = rand::thread_rng();
 
         // Attacks
         'projectile_loop: for (entity, pos, physics, vel, mut projectile) in (
@@ -86,7 +87,6 @@ impl<'a> System<'a> for Sys {
                 .owner
                 .and_then(|uid| read_data.uid_allocator.retrieve_entity_internal(uid.into()));
 
-            let mut rng = thread_rng();
             if physics.on_surface().is_none() && rng.gen_bool(0.05) {
                 server_emitter.emit(ServerEvent::Sound {
                     sound: Sound::new(SoundKind::Projectile, pos.0, 4.0, read_data.time.0),
@@ -175,6 +175,7 @@ impl<'a> System<'a> for Sys {
                         &mut projectile_vanished,
                         &mut outcomes_emitter,
                         &mut server_emitter,
+                        &mut rng,
                     );
                 }
 
@@ -263,6 +264,7 @@ fn dispatch_hit(
     projectile_vanished: &mut bool,
     outcomes_emitter: &mut Emitter<Outcome>,
     server_emitter: &mut Emitter<ServerEvent>,
+    rng: &mut rand::rngs::ThreadRng,
 ) {
     match projectile_info.effect {
         projectile::Effect::Attack(attack) => {
@@ -358,6 +360,7 @@ fn dispatch_hit(
                 *read_data.time,
                 |e| server_emitter.emit(e),
                 |o| outcomes_emitter.emit(o),
+                rng,
             );
         },
         projectile::Effect::Explode(e) => {

common/systems/src/shockwave.rs

@@ -13,7 +13,7 @@ use common::{
     GroupTarget,
 };
 use common_ecs::{Job, Origin, Phase, System};
-use rand::{thread_rng, Rng};
+use rand::Rng;
 use specs::{
     saveload::MarkerAllocator, shred::ResourceId, Entities, Join, Read, ReadStorage, SystemData,
     World, WriteStorage,
@@ -67,6 +67,7 @@ impl<'a> System<'a> for Sys {
     ) {
         let mut server_emitter = read_data.server_bus.emitter();
         let mut outcomes_emitter = outcomes.emitter();
+        let mut rng = rand::thread_rng();
 
         let time = read_data.time.0;
         let dt = read_data.dt.0;
@@ -93,7 +94,6 @@ impl<'a> System<'a> for Sys {
                 .owner
                 .and_then(|uid| read_data.uid_allocator.retrieve_entity_internal(uid.into()));
 
-            let mut rng = thread_rng();
             if rng.gen_bool(0.05) {
                 server_emitter.emit(ServerEvent::Sound {
                     sound: Sound::new(SoundKind::Shockwave, pos.0, 40.0, time),
@@ -253,6 +253,7 @@ impl<'a> System<'a> for Sys {
                         *read_data.time,
                         |e| server_emitter.emit(e),
                         |o| outcomes_emitter.emit(o),
+                        &mut rng,
                     );
 
                     shockwave_hit_list.hit_entities.push(*uid_b);

server/src/events/entity_manipulation.rs

@@ -980,6 +980,7 @@ pub fn handle_explosion(server: &Server, pos: Vec3<f32>, explosion: Explosion, o
                             *time,
                             |e| emitter.emit(e),
                             |o| outcomes_emitter.emit(o),
+                            &mut rng,
                         );
                     }
                 }

voxygen/src/hud/mod.rs

@@ -2987,7 +2987,8 @@ impl Hud {
             skillsets.get(entity),
             bodies.get(entity),
         ) {
-            let context = AbilityContext::from(stances.get(entity));
+            let stance = stances.get(entity);
+            let context = AbilityContext::from(stance);
             match Skillbar::new(
                 client,
                 &info,
@@ -3016,7 +3017,7 @@ impl Hud {
                 context,
                 combos.get(entity),
                 char_states.get(entity),
-                stances.get(entity),
+                stance,
             )
             .set(self.ids.skillbar, ui_widgets)
             {