BulletSim: move collision processing for linksets from BSPrimLinkable

into the linkset implementation classes.
Add HasSomeCollision attribute that remembers of any component of
   a linkset has a collision.
Update vehicle code (BSDynamic) to use the HasSomeCollision in place of
   IsColliding to make constraint based linksets properly notice the ground.
Add linkset functions to change physical attributes of all the members
   of a linkset.

1 files changed, 8 insertions, 8 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
index 4c2c1c1..1540df1 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
@@ -1001,7 +1001,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
             else if (newVelocityLengthSq < 0.001f)
                 VehicleVelocity = Vector3.Zero;
 
-            VDetailLog("{0},  MoveLinear,done,isColl={1},newVel={2}", ControllingPrim.LocalID, ControllingPrim.IsColliding, VehicleVelocity );
+            VDetailLog("{0},  MoveLinear,done,isColl={1},newVel={2}", ControllingPrim.LocalID, ControllingPrim.HasSomeCollision, VehicleVelocity );
 
         } // end MoveLinear()
 
@@ -1062,7 +1062,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                 Vector3 linearDeflectionW = linearDeflectionV * VehicleOrientation;
 
                 // Optionally, if not colliding, don't effect world downward velocity. Let falling things fall.
-                if (BSParam.VehicleLinearDeflectionNotCollidingNoZ && !m_controllingPrim.IsColliding)
+                if (BSParam.VehicleLinearDeflectionNotCollidingNoZ && !m_controllingPrim.HasSomeCollision)
                 {
                     linearDeflectionW.Z = 0f;
                 }
@@ -1222,7 +1222,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                 float targetHeight = Type == Vehicle.TYPE_BOAT ? GetWaterLevel(VehiclePosition) : GetTerrainHeight(VehiclePosition);
                 distanceAboveGround = VehiclePosition.Z - targetHeight;
                 // Not colliding if the vehicle is off the ground
-                if (!Prim.IsColliding)
+                if (!Prim.HasSomeCollision)
                 {
                     // downForce = new Vector3(0, 0, -distanceAboveGround / m_bankingTimescale);
                     VehicleVelocity += new Vector3(0, 0, -distanceAboveGround);
@@ -1233,12 +1233,12 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                 //     be computed with a motor.
                 // TODO: add interaction with banking.
                 VDetailLog("{0},  MoveLinear,limitMotorUp,distAbove={1},colliding={2},ret={3}",
-                                Prim.LocalID, distanceAboveGround, Prim.IsColliding, ret);
+                                Prim.LocalID, distanceAboveGround, Prim.HasSomeCollision, ret);
                  */
 
                 // Another approach is to measure if we're going up. If going up and not colliding,
                 //     the vehicle is in the air.  Fix that by pushing down.
-                if (!ControllingPrim.IsColliding && VehicleVelocity.Z > 0.1)
+                if (!ControllingPrim.HasSomeCollision && VehicleVelocity.Z > 0.1)
                 {
                     // Get rid of any of the velocity vector that is pushing us up.
                     float upVelocity = VehicleVelocity.Z;
@@ -1260,7 +1260,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                     }
                         */
                     VDetailLog("{0},  MoveLinear,limitMotorUp,collide={1},upVel={2},newVel={3}",
-                                    ControllingPrim.LocalID, ControllingPrim.IsColliding, upVelocity, VehicleVelocity);
+                                    ControllingPrim.LocalID, ControllingPrim.HasSomeCollision, upVelocity, VehicleVelocity);
                 }
             }
         }
@@ -1270,14 +1270,14 @@ namespace OpenSim.Region.Physics.BulletSPlugin
             Vector3 appliedGravity = m_VehicleGravity * m_vehicleMass;
 
             // Hack to reduce downward force if the vehicle is probably sitting on the ground
-            if (ControllingPrim.IsColliding && IsGroundVehicle)
+            if (ControllingPrim.HasSomeCollision && IsGroundVehicle)
                 appliedGravity *= BSParam.VehicleGroundGravityFudge;
 
             VehicleAddForce(appliedGravity);
 
             VDetailLog("{0},  MoveLinear,applyGravity,vehGrav={1},collid={2},fudge={3},mass={4},appliedForce={5}",
                             ControllingPrim.LocalID, m_VehicleGravity,
-                            ControllingPrim.IsColliding, BSParam.VehicleGroundGravityFudge, m_vehicleMass, appliedGravity);
+                            ControllingPrim.HasSomeCollision, BSParam.VehicleGroundGravityFudge, m_vehicleMass, appliedGravity);
         }
 
         // =======================================================================