diff --git a/src/face_crawler.rs b/src/face_crawler.rs
index 40cee50..5cdc1e1 100644
--- a/src/face_crawler.rs
+++ b/src/face_crawler.rs
@@ -2,6 +2,7 @@ use crate::physics::Body;
 use crate::model_physics::{FEV,MeshQuery,DirectedEdge,MinkowskiMesh,MinkowskiFace,MinkowskiDirectedEdge,MinkowskiVert};
 use strafesnet_common::integer::{Time,Fixed,Ratio};
 
+#[derive(Debug)]
 enum Transition<F,E:DirectedEdge,V>{
 	Miss,
 	Next(FEV<F,E,V>,Ratio<Fixed<4,128>,Fixed<4,128>>),
diff --git a/src/model_physics.rs b/src/model_physics.rs
index 16de46b..79aea53 100644
--- a/src/model_physics.rs
+++ b/src/model_physics.rs
@@ -9,7 +9,7 @@ pub trait UndirectedEdge{
 	fn as_directed(&self,parity:bool)->Self::DirectedEdge;
 }
 pub trait DirectedEdge{
-	type UndirectedEdge:Copy+UndirectedEdge;
+	type UndirectedEdge:Copy+std::fmt::Debug+UndirectedEdge;
 	fn as_undirected(&self)->Self::UndirectedEdge;
 	fn parity(&self)->bool;
 	//this is stupid but may work fine
@@ -50,6 +50,7 @@ impl DirectedEdge for SubmeshDirectedEdgeId{
 }
 
 //Vertex <-> Edge <-> Face -> Collide
+#[derive(Debug)]
 pub enum FEV<F,E:DirectedEdge,V>{
 	Face(F),
 	Edge(E::UndirectedEdge),
@@ -532,11 +533,11 @@ impl MeshQuery<SubmeshFaceId,SubmeshDirectedEdgeId,SubmeshVertId> for Transforme
 //(face,vertex)
 //(edge,edge)
 //(vertex,face)
-#[derive(Clone,Copy)]
+#[derive(Clone,Copy,Debug)]
 pub enum MinkowskiVert{
 	VertVert(SubmeshVertId,SubmeshVertId),
 }
-#[derive(Clone,Copy)]
+#[derive(Clone,Copy,Debug)]
 pub enum MinkowskiEdge{
 	VertEdge(SubmeshVertId,SubmeshEdgeId),
 	EdgeVert(SubmeshEdgeId,SubmeshVertId),
@@ -551,7 +552,7 @@ impl UndirectedEdge for MinkowskiEdge{
 		}
 	}
 }
-#[derive(Clone,Copy)]
+#[derive(Clone,Copy,Debug)]
 pub enum MinkowskiDirectedEdge{
 	VertEdge(SubmeshVertId,SubmeshDirectedEdgeId),
 	EdgeVert(SubmeshDirectedEdgeId,SubmeshVertId),
@@ -572,7 +573,7 @@ impl DirectedEdge for MinkowskiDirectedEdge{
 		}
 	}
 }
-#[derive(Debug,Clone,Copy,Hash,Eq,PartialEq)]
+#[derive(Clone,Copy,Debug,Hash,Eq,PartialEq)]
 pub enum MinkowskiFace{
 	VertFace(SubmeshVertId,SubmeshFaceId),
 	EdgeEdge(SubmeshEdgeId,SubmeshEdgeId,bool),
@@ -588,6 +589,7 @@ pub struct MinkowskiMesh<'a>{
 }
 
 //infinity fev algorithm state transition
+#[derive(Debug)]
 enum Transition{
 	Done,//found closest vert, no edges are better
 	Vert(MinkowskiVert),//transition to vert