From 6ecdadb32999aed776df29e53541326958daf836 Mon Sep 17 00:00:00 2001 From: Robert Adams Date: Fri, 16 Mar 2012 17:13:06 -0700 Subject: BulletSim: set buoyancy in only one place --- OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs') diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs index 0cab5d1..e816b61 100644 --- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs +++ b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs @@ -260,11 +260,8 @@ public class BSCharacter : PhysicsActor get { return _flying; } set { _flying = value; - _scene.TaintedObject(delegate() - { - // simulate flying by changing the effect of gravity - BulletSimAPI.SetObjectBuoyancy(_scene.WorldID, LocalID, _flying ? 1f : 0f); - }); + // simulate flying by changing the effect of gravity + this.Buoyancy(_flying ? 1f : 0f); } } public override bool @@ -299,6 +296,7 @@ public class BSCharacter : PhysicsActor get { return _kinematic; } set { _kinematic = value; } } + // neg=fall quickly, 0=1g, 1=0g, pos=float up public override float Buoyancy { get { return _buoyancy; } set { _buoyancy = value; -- cgit v1.1 From de24feb275ddd1c7e7c0b04900718a9000b8d49b Mon Sep 17 00:00:00 2001 From: Robert Adams Date: Sun, 18 Mar 2012 11:53:53 -0700 Subject: BulletSim: Add AvatarRestitution parameter. Centralize computation of buoyancy for flying. Tweek avatar default friction and resititution --- OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs') diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs index e816b61..1a61431 100644 --- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs +++ b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs @@ -94,7 +94,7 @@ public class BSCharacter : PhysicsActor _flying = isFlying; _orientation = Quaternion.Identity; _velocity = Vector3.Zero; - _buoyancy = isFlying ? 1f : 0f; + _buoyancy = ComputeBuoyancyFromFlying(isFlying); _scale = new Vector3(1f, 1f, 1f); _density = _scene.Params.avatarDensity; ComputeAvatarVolumeAndMass(); // set _avatarVolume and _mass based on capsule size, _density and _scale @@ -110,7 +110,7 @@ public class BSCharacter : PhysicsActor shapeData.Buoyancy = _buoyancy; shapeData.Static = ShapeData.numericFalse; shapeData.Friction = _scene.Params.avatarFriction; - shapeData.Restitution = _scene.Params.defaultRestitution; + shapeData.Restitution = _scene.Params.avatarRestitution; // do actual create at taint time _scene.TaintedObject(delegate() @@ -261,9 +261,12 @@ public class BSCharacter : PhysicsActor set { _flying = value; // simulate flying by changing the effect of gravity - this.Buoyancy(_flying ? 1f : 0f); + this.Buoyancy(ComputeBuoyancyFromFlying(_flying)); } } + private float ComputeBuoyancyFromFlying(bool ifFlying) { + return ifFlying ? 1f : 0f; + } public override bool SetAlwaysRun { get { return _setAlwaysRun; } -- cgit v1.1 From 1a738caecab74c5b9f6b6bac69a3ea9ccdc80b24 Mon Sep 17 00:00:00 2001 From: Robert Adams Date: Wed, 21 Mar 2012 07:07:44 -0700 Subject: BulletSim: update TODO list. Rearrange code for readability. Add per object friction and restitution runtime settable parameters. --- OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs') diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs index 1a61431..20708d9 100644 --- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs +++ b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs @@ -261,7 +261,7 @@ public class BSCharacter : PhysicsActor set { _flying = value; // simulate flying by changing the effect of gravity - this.Buoyancy(ComputeBuoyancyFromFlying(_flying)); + this.Buoyancy = ComputeBuoyancyFromFlying(_flying); } } private float ComputeBuoyancyFromFlying(bool ifFlying) { @@ -356,7 +356,7 @@ public class BSCharacter : PhysicsActor } else { - m_log.WarnFormat("{0}: Got a NaN force applied to a Character", LogHeader); + m_log.ErrorFormat("{0}: Got a NaN force applied to a Character", LogHeader); } //m_lastUpdateSent = false; } -- cgit v1.1 From 872d513daaa68b94b78f71bd2a2d9a0f117ff727 Mon Sep 17 00:00:00 2001 From: Robert Adams Date: Mon, 26 Mar 2012 17:36:33 -0700 Subject: BulletSim: make avatar animations update properly. It seems that ODE calls the avatar collision handling routine even if there are no collisions. This causes the animation to be updated. So, for instance, going from HOVER to FLY is caused by the physics engine calling the collision routine each frame with 0 collisions. --- .../Region/Physics/BulletSPlugin/BSCharacter.cs | 24 ++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) (limited to 'OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs') diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs index 20708d9..b08d5db 100644 --- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs +++ b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs @@ -426,6 +426,8 @@ public class BSCharacter : PhysicsActor } } + // Called by the scene when a collision with this object is reported + CollisionEventUpdate collisionCollection = null; public void Collide(uint collidingWith, ActorTypes type, Vector3 contactPoint, Vector3 contactNormal, float pentrationDepth) { // m_log.DebugFormat("{0}: Collide: ms={1}, id={2}, with={3}", LogHeader, _subscribedEventsMs, LocalID, collidingWith); @@ -443,10 +445,24 @@ public class BSCharacter : PhysicsActor if (nowTime < (_lastCollisionTime + _subscribedEventsMs)) return; _lastCollisionTime = nowTime; - Dictionary contactPoints = new Dictionary(); - contactPoints.Add(collidingWith, new ContactPoint(contactPoint, contactNormal, pentrationDepth)); - CollisionEventUpdate args = new CollisionEventUpdate(contactPoints); - base.SendCollisionUpdate(args); + if (collisionCollection == null) + collisionCollection = new CollisionEventUpdate(); + collisionCollection.AddCollider(collidingWith, new ContactPoint(contactPoint, contactNormal, pentrationDepth)); + } + + public void SendCollisions() + { + // if (collisionCollection != null) + // { + // base.SendCollisionUpdate(collisionCollection); + // collisionCollection = null; + // } + // Kludge to make a collision call even if there are no collisions. + // This causes the avatar animation to get updated. + if (collisionCollection == null) + collisionCollection = new CollisionEventUpdate(); + base.SendCollisionUpdate(collisionCollection); + collisionCollection = null; } } -- cgit v1.1