From 2abeb3b08cb9b7386a8bf32c5758101648a26e3c Mon Sep 17 00:00:00 2001
From: Nolan Darilek <nolan@thewordnerd.info>
Date: Tue, 20 Jul 2021 10:53:44 -0500
Subject: [PATCH] Don't sync transforms with a ColliderPosition, and also don't
 sync if they're already equal.

---
 src/core.rs | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/core.rs b/src/core.rs
index f8c0044..3733868 100644
--- a/src/core.rs
+++ b/src/core.rs
@@ -548,11 +548,20 @@ fn setup(core_config: Res<CoreConfig>, mut rapier_config: ResMut<RapierConfigura
 
 fn copy_coordinates_to_transform(
     config: Res<CoreConfig>,
-    mut query: Query<(&Coordinates, &mut Transform), Without<RigidBodyPosition>>,
+    mut query: Query<
+        (&Coordinates, &mut Transform),
+        (Without<RigidBodyPosition>, Without<ColliderPosition>),
+    >,
 ) {
     for (coordinates, mut transform) in query.iter_mut() {
-        transform.translation.x = coordinates.0 .0 * config.pixels_per_unit as f32;
-        transform.translation.y = coordinates.0 .1 * config.pixels_per_unit as f32;
+        let x = coordinates.0 .0 * config.pixels_per_unit as f32;
+        if transform.translation.x != x {
+            transform.translation.x = x;
+        }
+        let y = coordinates.0 .1 * config.pixels_per_unit as f32;
+        if transform.translation.y != y {
+            transform.translation.y = y;
+        }
     }
 }
 
@@ -589,7 +598,6 @@ impl Plugin for CorePlugin {
         }
         app.register_type::<Coordinates>()
             .add_startup_system(setup.system())
-            .add_system(copy_coordinates_to_transform.system())
             .add_system_to_stage(
                 CoreStage::PostUpdate,
                 copy_coordinates_to_transform