From 68698975f1537725a1f53bc4b2db2cfc798ac7f3 Mon Sep 17 00:00:00 2001
From: Robert Adams
Date: Tue, 9 Oct 2012 12:58:06 -0700
Subject: BulletSim: Add Force* operations to objects to allow direct push to
 engine. Update BSDynamics to use same (don't want to delay updates til next
 taint-time. Suppress queuing a taint update for position and orientation
 calls if value     does not change. Move Bullet timing statistics call from
 C# back to C++ code. Throttle taints per simulation step and add parameter to
 set. By default, don't create hulls for physical objects. Add a     parameter
 to turn on and off.

---
 OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs | 33 ++++++++++++++++++++++----
 1 file changed, 29 insertions(+), 4 deletions(-)

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

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
index 98a18a1..d408be0 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
@@ -265,6 +265,11 @@ public sealed class BSPrim : BSPhysObject
             return _position;
         }
         set {
+            // If you must push the position into the physics engine, use ForcePosition.
+            if (_position == value)
+            {
+                return;
+            }
             _position = value;
             // TODO: what does it mean to set the position of a child prim?? Rebuild the constraint?
             PositionSanityCheck();
@@ -453,7 +458,6 @@ public sealed class BSPrim : BSPhysObject
         }
         return;
     }
-
     public override OMV.Vector3 Velocity {
         get { return _velocity; }
         set {
@@ -465,6 +469,13 @@ public sealed class BSPrim : BSPhysObject
             });
         }
     }
+    public override OMV.Vector3 ForceVelocity {
+        get { return _velocity; }
+        set {
+            _velocity = value;
+            BulletSimAPI.SetLinearVelocity2(BSBody.ptr, _velocity);
+        }
+    }
     public override OMV.Vector3 Torque {
         get { return _torque; }
         set { _torque = value;
@@ -490,6 +501,8 @@ public sealed class BSPrim : BSPhysObject
             return _orientation;
         }
         set {
+            if (_orientation == value)
+                return;
             _orientation = value;
             // TODO: what does it mean if a child in a linkset changes its orientation? Rebuild the constraint?
             PhysicsScene.TaintedObject("BSPrim.setOrientation", delegate()
@@ -621,9 +634,9 @@ public sealed class BSPrim : BSPhysObject
             // There can be special things needed for implementing linksets
             Linkset.MakeStatic(this);
             // The activation state is 'disabled' so Bullet will not try to act on it.
-            // BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.DISABLE_SIMULATION);
+            BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.DISABLE_SIMULATION);
             // Start it out sleeping and physical actions could wake it up.
-            BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.ISLAND_SLEEPING);
+            // BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.ISLAND_SLEEPING);
 
             BSBody.collisionFilter = CollisionFilterGroups.StaticObjectFilter;
             BSBody.collisionMask = CollisionFilterGroups.StaticObjectMask;
@@ -640,6 +653,9 @@ public sealed class BSPrim : BSPhysObject
             // per http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=3382
             BulletSimAPI.ClearAllForces2(BSBody.ptr);
 
+            // For good measure, make sure the transform is set through to the motion state
+            BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+
             // A dynamic object has mass
             IntPtr collisionShapePtr = BulletSimAPI.GetCollisionShape2(BSBody.ptr);
             OMV.Vector3 inertia = BulletSimAPI.CalculateLocalInertia2(collisionShapePtr, Mass);
@@ -776,6 +792,15 @@ public sealed class BSPrim : BSPhysObject
             });
         }
     }
+    public override OMV.Vector3 ForceRotationalVelocity {
+        get {
+            return _rotationalVelocity;
+        }
+        set {
+            _rotationalVelocity = value;
+            BulletSimAPI.SetAngularVelocity2(BSBody.ptr, _rotationalVelocity);
+        }
+    }
     public override bool Kinematic {
         get { return _kinematic; }
         set { _kinematic = value;
@@ -1307,7 +1332,7 @@ public sealed class BSPrim : BSPhysObject
             /*
         else
         {
-            // For debugging, we can also report the movement of children
+            // For debugging, report the movement of children
             DetailLog("{0},BSPrim.UpdateProperties,child,pos={1},orient={2},vel={3},accel={4},rotVel={5}",
                     LocalID, entprop.Position, entprop.Rotation, entprop.Velocity,
                     entprop.Acceleration, entprop.RotationalVelocity);
-- 
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