From d1ede1df3a04428c83a9937059a0df00d7f3e281 Mon Sep 17 00:00:00 2001
From: Robert Adams
Date: Tue, 25 Dec 2012 23:55:25 -0800
Subject: BulletSim: make llBuoyancy work. For some reason, Bullet resets an
 object's individual gravity to the world gravity when the object is added to
 the physical world.

---
 OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs')

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
index 3fde57b..a8edd23 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
@@ -573,6 +573,9 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                 BulletSimAPI.SetMassProps2(Prim.PhysBody.ptr, m_vehicleMass, localInertia);
                 BulletSimAPI.UpdateInertiaTensor2(Prim.PhysBody.ptr);
 
+                Vector3 grav = PhysicsScene.DefaultGravity * (1f - Prim.Buoyancy);
+                BulletSimAPI.SetGravity2(Prim.PhysBody.ptr, grav);
+
                 VDetailLog("{0},BSDynamics.Refresh,mass={1},frict={2},inert={3},aDamp={4}",
                                 Prim.LocalID, m_vehicleMass, friction, localInertia, angularDamping);
             }
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