From cff920ddcdc8b03722e42a0d32cee4a17a0a6734 Mon Sep 17 00:00:00 2001
From: Quaternions <krakow20@gmail.com>
Date: Wed, 8 Nov 2023 20:23:52 -0800
Subject: [PATCH] tweak elasticity calc

---
 src/physics.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/physics.rs b/src/physics.rs
index 90be5dd..d9b433a 100644
--- a/src/physics.rs
+++ b/src/physics.rs
@@ -1353,8 +1353,9 @@ impl crate::instruction::InstructionConsumer<PhysicsInstruction> for PhysicsStat
 							Some(crate::model::ContactingBehaviour::Cling)=>println!("Unimplemented!"),
 							&Some(crate::model::ContactingBehaviour::Elastic(elasticity))=>{
 								let n=self.models.mesh(contact.model_id).face_nd(contact.face_id).0;
-								let d=n.dot(v)*Planar64::raw(-1-elasticity as i64);
-								v-=n*(d/n.dot(n));
+								//velocity and normal are facing opposite directions so this is inherently negative.
+								let d=n.dot(v)*(Planar64::ONE+Planar64::raw(elasticity as i64+1));
+								v+=n*(d/n.dot(n));
 							},
 							Some(crate::model::ContactingBehaviour::Ladder(contacting_ladder))=>{
 								if contacting_ladder.sticky{