diff --git a/engine/physics/src/physics.rs b/engine/physics/src/physics.rs
index 1c28e341..56e07149 100644
--- a/engine/physics/src/physics.rs
+++ b/engine/physics/src/physics.rs
@@ -226,9 +226,9 @@ impl PhysicsModels{
 	}
 	fn get_model_transform(&self,model_id:ModelId)->Option<&PhysicsMeshTransform>{
 		//ModelId can possibly be a decoration
-		match self.contact_models.get(&ContactModelId::new(model_id.get())){
+		match self.contact_models.get(&model_id.into()){
 			Some(model)=>Some(&model.transform),
-			None=>self.intersect_models.get(&IntersectModelId::new(model_id.get()))
+			None=>self.intersect_models.get(&model_id.into())
 				.map(|model|&model.transform),
 		}
 	}
@@ -671,6 +671,11 @@ impl Into<ModelId> for ContactModelId{
 		ModelId::new(self.get())
 	}
 }
+impl From<ModelId> for ContactModelId{
+	fn from(other: ModelId)->Self{
+		Self::new(other.get())
+	}
+}
 #[derive(Debug,Clone,Copy,Hash,id::Id,Eq,PartialEq)]
 struct IntersectModelId(u32);
 impl Into<ModelId> for IntersectModelId{
@@ -678,6 +683,11 @@ impl Into<ModelId> for IntersectModelId{
 		ModelId::new(self.get())
 	}
 }
+impl From<ModelId> for IntersectModelId{
+	fn from(other: ModelId)->Self{
+		Self::new(other.get())
+	}
+}
 #[derive(Debug,Clone,Copy,Hash,Eq,PartialEq)]
 enum PhysicsModelId{
 	Contact(ContactModelId),
@@ -978,6 +988,8 @@ impl PhysicsData{
 
 		let mut contact_models=HashMap::new();
 		let mut intersect_models=HashMap::new();
+		let mut contacts_in_order=Vec::new();
+		let mut intersects_in_order=Vec::new();
 
 		let mut physics_attr_id_from_model_attr_id=HashMap::<CollisionAttributesId,PhysicsAttributesId>::new();
 		let mut used_meshes=Vec::new();
@@ -1033,18 +1045,22 @@ impl PhysicsData{
 			let transform=PhysicsMeshTransform::new(model.transform);
 			match attr_id{
 				PhysicsAttributesId::Contact(attr_id)=>{
-					contact_models.insert(ContactModelId::new(model_id as u32),ContactModel{
+					let contact_model_id=ContactModelId::new(model_id as u32);
+					contact_models.insert(contact_model_id,ContactModel{
 						mesh_id,
 						attr_id,
 						transform,
 					});
+					contacts_in_order.push(contact_model_id);
 				},
 				PhysicsAttributesId::Intersect(attr_id)=>{
-					intersect_models.insert(IntersectModelId::new(model_id as u32),IntersectModel{
+					let intersect_model_id=IntersectModelId::new(model_id as u32);
+					intersect_models.insert(intersect_model_id,IntersectModel{
 						mesh_id,
 						attr_id,
 						transform,
 					});
+					intersects_in_order.push(intersect_model_id);
 				},
 			}
 		}
@@ -1055,11 +1071,13 @@ impl PhysicsData{
 			).collect();
 		let convex_mesh_aabb_list=
 		//map the two lists into a single type so they can be processed with one closure
-		contact_models.iter().map(|(&model_id,model)|
-			(PhysicsModelId::Contact(model_id),&model.mesh_id,&model.transform)
-		).chain(intersect_models.iter().map(|(&model_id,model)|
-			(PhysicsModelId::Intersect(model_id),&model.mesh_id,&model.transform)
-		))
+		contacts_in_order.iter().map(|model_id|{
+			let model=contact_models.get(model_id).unwrap();
+			(PhysicsModelId::Contact(*model_id),&model.mesh_id,&model.transform)
+		}).chain(intersects_in_order.iter().map(|model_id|{
+			let model=intersect_models.get(model_id).unwrap();
+			(PhysicsModelId::Intersect(*model_id),&model.mesh_id,&model.transform)
+		}))
 		.flat_map(|(model_id,mesh_id,transform)|{
 			meshes[mesh_id].submesh_views()
 			.enumerate().map(move|(submesh_id,view)|{