From 2c699590e2dfd92cafef5f177e7718480fa200cf Mon Sep 17 00:00:00 2001
From: Steffen <Steffen-1710@web.de>
Date: Sun, 15 Feb 2015 16:12:11 +0100
Subject: [PATCH] Changed position constraints so they dont bounce the door up
 and down.

---
 physics.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/physics.cc b/physics.cc
index bc8706e..ddf7499 100644
--- a/physics.cc
+++ b/physics.cc
@@ -36,7 +36,8 @@ void Physics::takeUpdateStep(float timeDiff)
         if(allPositionConstraints[i].position != allPositionConstraints[i].body->getCenterOfMassPosition()) //if constraint != position of the body because otherwise dir = 0
         {
             btVector3 dir = allPositionConstraints[i].position - allPositionConstraints[i].body->getCenterOfMassPosition();
-            dir = dir*allPositionConstraints[i].strength - allPositionConstraints[i].body->getLinearVelocity();
+            dir = dir*allPositionConstraints[i].strength - allPositionConstraints[i].body->getLinearVelocity()
+                                                           *allPositionConstraints[i].body->getLinearVelocity().length();
             allPositionConstraints[i].body->applyCentralForce(dir*allPositionConstraints[i].strength); //apply a foce upon the object pushing it towards the constraint position
         }
     }