From 4a1f0e3ac2f1f6bbe4f77d4e81884cf318b9f9b2 Mon Sep 17 00:00:00 2001
From: andriyDev <andriydzikh@gmail.com>
Date: Sat, 21 Feb 2026 12:36:27 -0800
Subject: [PATCH 1/4] Flip polygons in `bevy_mesh_to_landmass_nav_mesh` for
 flipped coordinate systems.

---
 crates/bevy_landmass/src/nav_mesh.rs      | 12 ++++++++----
 crates/bevy_landmass/src/nav_mesh_test.rs | 14 ++++++++------
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/crates/bevy_landmass/src/nav_mesh.rs b/crates/bevy_landmass/src/nav_mesh.rs
index 17bc346d..3361e964 100644
--- a/crates/bevy_landmass/src/nav_mesh.rs
+++ b/crates/bevy_landmass/src/nav_mesh.rs
@@ -45,10 +45,12 @@ pub fn bevy_mesh_to_landmass_nav_mesh<CS: CoordinateSystem>(
       assert!(indices.len() % 3 == 0);
       let mut polygons = Vec::with_capacity(indices.len() / 3);
       for i in (0..indices.len()).step_by(3) {
+        let (b, c) =
+          if CS::FLIP_POLYGONS { (i + 2, i + 1) } else { (i + 1, i + 2) };
         polygons.push(vec![
           indices[i] as usize,
-          indices[i + 1] as usize,
-          indices[i + 2] as usize,
+          indices[b] as usize,
+          indices[c] as usize,
         ]);
       }
       polygons
@@ -57,10 +59,12 @@ pub fn bevy_mesh_to_landmass_nav_mesh<CS: CoordinateSystem>(
       assert!(indices.len() % 3 == 0);
       let mut polygons = Vec::with_capacity(indices.len() / 3);
       for i in (0..indices.len()).step_by(3) {
+        let (b, c) =
+          if CS::FLIP_POLYGONS { (i + 2, i + 1) } else { (i + 1, i + 2) };
         polygons.push(vec![
           indices[i] as usize,
-          indices[i + 1] as usize,
-          indices[i + 2] as usize,
+          indices[b] as usize,
+          indices[c] as usize,
         ]);
       }
       polygons
diff --git a/crates/bevy_landmass/src/nav_mesh_test.rs b/crates/bevy_landmass/src/nav_mesh_test.rs
index 77b94908..2c0e4b34 100644
--- a/crates/bevy_landmass/src/nav_mesh_test.rs
+++ b/crates/bevy_landmass/src/nav_mesh_test.rs
@@ -105,15 +105,17 @@ fn converts_u32_indices() {
     ]
   );
 
+  // ThreeD sets `FLIP_POLYGONS`, so the polygons end up flipped here (and then
+  // flipped back during validation).
   assert_eq!(
     nav_mesh.polygons,
     vec![
-      vec![0, 1, 2],
-      vec![2, 3, 0],
-      vec![3, 2, 4],
-      vec![3, 4, 5],
-      vec![4, 2, 6],
-      vec![4, 6, 7],
+      vec![0, 2, 1],
+      vec![2, 0, 3],
+      vec![3, 4, 2],
+      vec![3, 5, 4],
+      vec![4, 6, 2],
+      vec![4, 7, 6],
     ]
   );
 }

From 77f94ffb52a8d87a35ea1811b3b487f0fc74eac4 Mon Sep 17 00:00:00 2001
From: andriyDev <andriydzikh@gmail.com>
Date: Sat, 21 Feb 2026 13:12:27 -0800
Subject: [PATCH 2/4] Fix the playground example using the wrong winding order
 for nav mesh.

---
 crates/bevy_landmass/assets/playground.glb | Bin 13452 -> 13452 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)

diff --git a/crates/bevy_landmass/assets/playground.glb b/crates/bevy_landmass/assets/playground.glb
index fa831d810606d3e05768bb0270282cbb196dc1ab..52658190336c710541971389bdd0a5dea3787047 100644
GIT binary patch
delta 852
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zjAC#m=bM|{`R}=hq2KLy?@qkcLa|UT-Jh<`6rV3`Gt@aae|QzwtNVIb4;}-N!BfC;
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zk1z9b6);@Auokq4=C!W4HsPi=WXPi!j47%urImphwKapO7kU*@Ui&J*g7#EYMP*o4
zNr$S*f|lmEEd^mv0WE7qYj91g>S#wfnCod5^RN;yp(Lx!%LQF>vqDHVw1;a5+bA-)
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zgeG~GI9P!d(&bgx5j-OKhMH=?1}1gbgiShrmT18iCRuIsn`Kc(RUP0`Mb3Zw=FRzf
NT!VMpe)+I(Q=iV~n=k+X

delta 1188
zcmb`F-7-Q^7>3_|Ws5dSp;Ue%JCS}Q$&n*B;mmaC!0~ngnPIpQ(|KK(1D?u|nbI~|
zGwbPFYt8!J_g(E)v(<dO^q2Cbe7W*;weBjs-k65nEnUAf#OQeLzG~^d+uIwA$@TEv
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z%N_{-_Pn3zJH6X~sGWV(?b~^m+YV_-Vdk<D+E5ZEm6BIc#b8W6?Wmy)%xGIKt;i4k
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zE8F77B2Ny-6<8rvksJmzXdWR|5f*8XBWV>@b;?^MRD(60v8wiY#wtMbI;>-2519sR
ZXjf&@W?@z(B7A*w&u^yLem5VsJ^&WTuG0Vj


From 4a65db814798060140226e8eded4632306be8f08 Mon Sep 17 00:00:00 2001
From: andriyDev <andriydzikh@gmail.com>
Date: Sat, 21 Feb 2026 13:21:13 -0800
Subject: [PATCH 3/4] Update the changelog.

---
 CHANGELOG.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e98b27c..bbabf19a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@
 
 ### Migration Guide
 
+## `bevy_landmass` [0.11.1] - 2026-02-21
+
+### Fixes
+
+- `bevy_mesh_to_landmass_nav_mesh` now correctly orients faces.
+
 ## `bevy_landmass` [0.11.0] / `landmass_rerecast` [0.2.0] - 2026-01-29
 
 ### Migration Guide

From 43ea56f2b396279fef521212ef951070b3d3939b Mon Sep 17 00:00:00 2001
From: andriyDev <andriydzikh@gmail.com>
Date: Sat, 21 Feb 2026 13:21:31 -0800
Subject: [PATCH 4/4] Bump bevy_landmass version to 0.11.1.

---
 crates/bevy_landmass/Cargo.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/bevy_landmass/Cargo.toml b/crates/bevy_landmass/Cargo.toml
index 4f79b57e..6cfdc0ef 100644
--- a/crates/bevy_landmass/Cargo.toml
+++ b/crates/bevy_landmass/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "bevy_landmass"
-version = "0.11.0"
+version = "0.11.1"
 edition = "2024"
 
 description = "A plugin for Bevy to handle navigation of AI characters."