From fd82fa62032e97596ca65f655e9479b471871c06 Mon Sep 17 00:00:00 2001
From: Rhys Lloyd <krakow20@gmail.com>
Date: Wed, 25 Feb 2026 13:17:47 -0800
Subject: [PATCH] reject meshes with zero vertices

---
 lib/rbx_loader/src/mesh.rs  | 4 ++++
 lib/rbx_loader/src/union.rs | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/lib/rbx_loader/src/mesh.rs b/lib/rbx_loader/src/mesh.rs
index 765ef8a0..ac7df172 100644
--- a/lib/rbx_loader/src/mesh.rs
+++ b/lib/rbx_loader/src/mesh.rs
@@ -9,6 +9,7 @@ use crate::loader::MeshWithSize;
 
 #[derive(Debug)]
 pub enum Error{
+	ZeroVertices,
 	RbxMesh(rbx_mesh::mesh::Error)
 }
 impl std::fmt::Display for Error{
@@ -143,5 +144,8 @@ pub fn convert(roblox_mesh_bytes:crate::data::RobloxMeshBytes)->Result<MeshWithS
 	for &point in &mesh.unique_pos{
 		aabb.grow(point);
 	}
+	if mesh.unique_vertices.is_empty(){
+		return Err(Error::ZeroVertices);
+	}
 	Ok(MeshWithSize{mesh,size:aabb.size()})
 }
diff --git a/lib/rbx_loader/src/union.rs b/lib/rbx_loader/src/union.rs
index c907b189..bc9e7e69 100644
--- a/lib/rbx_loader/src/union.rs
+++ b/lib/rbx_loader/src/union.rs
@@ -10,6 +10,7 @@ use strafesnet_common::integer::vec3;
 #[derive(Debug)]
 pub enum Error{
 	Block,
+	ZeroVertices,
 	MissingVertexId(u32),
 	Planar64Vec3(strafesnet_common::integer::Planar64TryFromFloatError),
 	RobloxPhysicsData(rbx_mesh::physics_data::Error),
@@ -265,6 +266,9 @@ pub fn convert(
 		graphics_groups,
 		physics_groups,
 	);
+	if mesh.unique_vertices.is_empty(){
+		return Err(Error::ZeroVertices);
+	}
 	Ok(MeshWithSize{
 		mesh,
 		size:vec3::ONE,