From 3c5b52c742a86dfb86238bad3bfc375bf12fc518 Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sun, 23 Aug 2026 17:53:46 -0700
Subject: profiling, tweaks

---
 src/sim/sim_manager/utils.rs | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

(limited to 'src/sim/sim_manager/utils.rs')

diff --git a/src/sim/sim_manager/utils.rs b/src/sim/sim_manager/utils.rs
index e77f30a..f30e9a0 100644
--- a/src/sim/sim_manager/utils.rs
+++ b/src/sim/sim_manager/utils.rs
@@ -68,6 +68,7 @@ pub fn write_entities_to_world(
     sim: &mut SimManager,
     // (entity_x, entity_y, cell_x, cell_y)
 ) -> Vec<(EntityId, Vec<(u8, u8, i32, i32)>)> {
+    puffin::profile_function!();
     // TODO optimize
     let entity_ids: Vec<EntityId> = sim.entities.keys().copied().collect();
     let mut cells_written_by_entity: Vec<(EntityId, Vec<(u8, u8, i32, i32)>)> = Vec::new();
@@ -85,6 +86,7 @@ pub fn read_back_entities_from_world(
     sim: &mut SimManager,
     cells_written_by_entity: Vec<(EntityId, Vec<(u8, u8, i32, i32)>)>,
 ) {
+    puffin::profile_function!();
     for (entity_id, cells_written) in cells_written_by_entity {
         let mut entity = sim.entities.get_mut(&entity_id);
         let mut should_update_entity = false;
@@ -115,19 +117,23 @@ pub fn read_back_entities_from_world(
         if let Some(entity) = &mut entity
             && should_update_entity
         {
+            puffin::profile_scope!("Recompute collider");
             if let Some(new_collider) = entity.compute_collider() {
-                sim.rb_manager
-                    .physics_manager
-                    .world
-                    .remove_collider(entity.data.collider_h.unwrap());
-
-                let new_handle = sim
-                    .rb_manager
-                    .physics_manager
-                    .world
-                    .insert_collider(new_collider, Some(entity.data.rb_h.unwrap()));
-
-                entity.data.collider_h = Some(new_handle);
+                {
+                    puffin::profile_scope!("Upsert collider");
+                    sim.rb_manager
+                        .physics_manager
+                        .world
+                        .remove_collider(entity.data.collider_h.unwrap());
+
+                    let new_handle = sim
+                        .rb_manager
+                        .physics_manager
+                        .world
+                        .insert_collider(new_collider, Some(entity.data.rb_h.unwrap()));
+
+                    entity.data.collider_h = Some(new_handle);
+                }
             }
         }
     }
-- 
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