From 5bedb15c61ad26824dbe6053f0b66b11b6ad5047 Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sun, 23 Aug 2026 23:35:57 -0700
Subject: fix scaling

---
 src/sim/rb_manager/mod.rs | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

(limited to 'src/sim/rb_manager/mod.rs')

diff --git a/src/sim/rb_manager/mod.rs b/src/sim/rb_manager/mod.rs
index 1a2abbf..36893b5 100644
--- a/src/sim/rb_manager/mod.rs
+++ b/src/sim/rb_manager/mod.rs
@@ -29,7 +29,7 @@ pub struct PhysicsManager {
 impl PhysicsManager {
     pub fn new() -> Self {
         let mut world = PhysicsWorld::new();
-        let gravity = vec2(0.0, 9.81);
+        let gravity = vec2(0.0, 9.81 * CELLS_TO_METRES);
         world.gravity = gravity;
         world.integration_parameters = IntegrationParameters {
             // 20 pixels <-> 1 meter
@@ -95,9 +95,7 @@ impl RbManager {
                 continue;
             }
             for i in 0..p {
-                vertices.push(
-                    (poly[i as usize] - (marchable.size().as_vec2() - 1.0) / 2.0) / CELLS_TO_METRES,
-                );
+                vertices.push(poly[i as usize] - (marchable.size().as_vec2() - 1.0) / 2.0);
                 indices.push([v + i, v + (i + 1) % p]);
             }
         }
@@ -129,12 +127,11 @@ impl RbManager {
 
     pub fn upsert_chunk_collider(&mut self, cx: i32, cy: i32, chunk: &Chunk) {
         puffin::profile_function!();
-        let collider = RbManager::polyline_collider_from_marchable(chunk, Some(20)).translation(
-            vec2(
+        let collider =
+            RbManager::polyline_collider_from_marchable(chunk, Some(20)).translation(vec2(
                 (cx as f32 + 0.5) * CHUNK_SIZE as f32,
                 (cy as f32 + 0.5) * CHUNK_SIZE as f32,
-            ) / CELLS_TO_METRES,
-        );
+            ));
 
         if let Some(handle) = self.chunk_colliders.remove(&(cx, cy)) {
             self.physics_manager.world.remove_collider(handle);
-- 
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