protected void TriggerPreUpdatePropertyAction(ref EntityProperties entprop)
{
PreUpdatePropertyAction actions = OnPreUpdateProperty;
if (actions != null)
{
actions(ref entprop);
}
}
// Called just as the property update is received from the physics engine.
// Do any mode necessary for avatar movement.
void Process_OnPreUpdateProperty(ref EntityProperties entprop)
{
// Don't change position if standing on a stationary object.
if (m_controllingPrim.IsStationary)
{
entprop.Position = m_controllingPrim.RawPosition;
entprop.Velocity = OMV.Vector3.Zero;
m_physicsScene.PE.SetTranslation(m_controllingPrim.PhysBody, entprop.Position, entprop.Rotation);
}
}
public override void UpdateProperties(EntityProperties entprop)
{
// TODO!!! Linkset.ShouldReportPropertyUpdates
if (Linkset.IsRoot(this))
{
// Properties are only updated for the roots of a linkset.
// TODO: this will have to change when linksets are articulated.
base.UpdateProperties(entprop);
}
/*
* else
* {
* // 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);
* }
*/
// The linkset might like to know about changing locations
Linkset.UpdateProperties(UpdatedProperties.EntPropUpdates, this);
}
public override void UpdateProperties(EntityProperties entprop)
{
// Undo any center-of-mass displacement that might have been done.
if (PositionDisplacement != Vector3.Zero || OrientationDisplacement != Quaternion.Identity)
{
// Correct for any rotation around the center-of-mass
// TODO!!!
//entprop.Position = entprop.Position + (PositionDisplacement * entprop.Rotation);
// entprop.Rotation = something;
// The origional shape was offset from 'zero' by PositionDisplacement.
// These physical location must be back converted to be centered around the displaced
// root shape.
// Move the returned center-of-mass location to the root prim location.
Vector3 displacement = PositionDisplacement * entprop.Rotation;
Vector3 displacedPos = entprop.Position - displacement;
DetailLog("{0},BSPrimDisplaced.UpdateProperties,physPos={1},disp={2},simPos={3}",
LocalID, entprop.Position, displacement, displacedPos);
entprop.Position = displacedPos;
}
base.UpdateProperties(entprop);
}
// Update the physical location and motion of the object. Called with data from Bullet. public abstract void UpdateProperties(EntityProperties entprop);
public override void UpdateProperties(EntityProperties entprop)
{
// Undo any center-of-mass displacement that might have been done.
if (PositionDisplacement != Vector3.Zero || OrientationDisplacement != Quaternion.Identity)
{
// Correct for any rotation around the center-of-mass
// TODO!!!
//entprop.Position = entprop.Position + (PositionDisplacement * entprop.Rotation);
// entprop.Rotation = something;
// The origional shape was offset from 'zero' by PositionDisplacement.
// These physical location must be back converted to be centered around the displaced
// root shape.
// Move the returned center-of-mass location to the root prim location.
Vector3 displacement = PositionDisplacement * entprop.Rotation;
Vector3 displacedPos = entprop.Position - displacement;
DetailLog("{0},BSPrimDisplaced.UpdateProperties,physPos={1},disp={2},simPos={3}",
LocalID, entprop.Position, displacement, displacedPos);
entprop.Position = displacedPos;
}
base.UpdateProperties(entprop);
}
// Called just as the property update is received from the physics engine.
// Do any mode necessary for avatar movement.
void Process_OnPreUpdateProperty(ref EntityProperties entprop)
{
// Don't change position if standing on a stationary object.
if (m_controllingPrim.IsStationary)
{
entprop.Position = m_controllingPrim.RawPosition;
entprop.Velocity = OMV.Vector3.Zero;
m_physicsScene.PE.SetTranslation(m_controllingPrim.PhysBody, entprop.Position, entprop.Rotation);
}
}
// Initialization and simulation
public abstract BulletWorld Initialize(Vector3 maxPosition, ConfigurationParameters parms,
int maxCollisions, ref CollisionDesc[] collisionArray,
int maxUpdates, ref EntityProperties[] updateArray
);
// The physics engine says that properties have updated. Update same and inform
// the world that things have changed.
public override void UpdateProperties(EntityProperties entprop)
{
bool needSendUpdate = false;
// Don't change position if standing on a stationary object.
if (!IsStationary)
{
_position = entprop.Position;
}
_orientation = entprop.Rotation;
if (entprop.Velocity != OMV.Vector3.Zero && entprop.Velocity.ApproxEquals(OMV.Vector3.Zero, 0.01f) &&
Velocity != OMV.Vector3.Zero)
{
entprop.Velocity = OMV.Vector3.Zero;
entprop.Acceleration = OMV.Vector3.Zero;
entprop.RotationalVelocity = OMV.Vector3.Zero;
Velocity = OMV.Vector3.Zero;
m_ZeroUpdateSent = 3;
needSendUpdate = true;
}
if (!entprop.Velocity.ApproxEquals(RawVelocity, 0.4f))
{
RawVelocity = entprop.Velocity;
needSendUpdate = true;
}
// Do some sanity checking for the avatar. Make sure it's above ground and inbounds.
if (PositionSanityCheck(true))
{
DetailLog("{0},BSCharacter.UpdateProperties,updatePosForSanity,pos={1}", LocalID, _position);
entprop.Position = _position;
}
// animation checks
const float POSITION_TOLERANCE = 5.0f;
float VELOCITY_TOLERANCE = 0.025f * 0.025f;
if (PhysicsScene.TimeDilation < 0.5)
{
float percent = (1f - PhysicsScene.TimeDilation) * 100;
VELOCITY_TOLERANCE *= percent * 2;
}
bool VelIsZero = false;
OMV.Vector3 _velocity = Velocity;
int vcntr = 0;
if (Math.Abs(_velocity.X) < 0.01)
{
vcntr++;
_velocity.X = 0;
}
if (Math.Abs(_velocity.Y) < 0.01)
{
vcntr++;
_velocity.Y = 0;
}
if (Math.Abs(_velocity.Z) < 0.01)
{
vcntr++;
_velocity.Z = 0;
}
if (vcntr == 3)
{
Velocity = _velocity;
VelIsZero = true;
}
float vlength = (Velocity - m_lastVelocity).LengthSquared();
float plength = (_position - m_lastPosition).LengthSquared();
if (vlength > VELOCITY_TOLERANCE || plength > POSITION_TOLERANCE)
{
needSendUpdate = true;
m_ZeroUpdateSent = 3;
}
else if (VelIsZero)
{
if (m_ZeroUpdateSent > 0)
{
needSendUpdate = true;
m_ZeroUpdateSent--;
}
}
if (needSendUpdate)
{
m_lastPosition = _position;
m_lastVelocity = Velocity;
TriggerSignificantMovement();
TriggerMovementUpdate();
// remember the current and last set values
_acceleration = entprop.Acceleration;
_rotationalVelocity = entprop.RotationalVelocity;
LastEntityProperties = CurrentEntityProperties;
CurrentEntityProperties = entprop;
}
// Tell the linkset about value changes
// Linkset.UpdateProperties(UpdatedProperties.EntPropUpdates, this);
// Avatars don't report their changes the usual way. Changes are checked for in the heartbeat loop.
// base.RequestPhysicsterseUpdate();
DetailLog("{0},BSCharacter.UpdateProperties,call,pos={1},orient={2},vel={3},accel={4},rotVel={5}",
LocalID, _position, _orientation, RawVelocity, _acceleration, _rotationalVelocity);
}
// The physics engine says that properties have updated. Update same and inform
// the world that things have changed.
// NOTE: BSPrim.UpdateProperties is overloaded by BSPrimLinkable which modifies updates from root and children prims.
// NOTE: BSPrim.UpdateProperties is overloaded by BSPrimDisplaced which handles mapping physical position to simulator position.
public override void UpdateProperties(EntityProperties entprop)
{
// Let anyone (like the actors) modify the updated properties before they are pushed into the object and the simulator.
TriggerPreUpdatePropertyAction(ref entprop);
// DetailLog("{0},BSPrim.UpdateProperties,entry,entprop={1}", LocalID, entprop); // DEBUG DEBUG
// Assign directly to the local variables so the normal set actions do not happen
_position = entprop.Position;
_orientation = entprop.Rotation;
bool terseUpdate = false;
if (entprop.Velocity != OMV.Vector3.Zero && entprop.Velocity.ApproxEquals(OMV.Vector3.Zero, 0.01f) &&
Velocity != OMV.Vector3.Zero)
{
entprop.Velocity = OMV.Vector3.Zero;
entprop.Acceleration = OMV.Vector3.Zero;
entprop.RotationalVelocity = OMV.Vector3.Zero;
Velocity = RawVelocity = OMV.Vector3.Zero;
ZeroMotion(true);
terseUpdate = true;
}
// DEBUG DEBUG DEBUG -- smooth velocity changes a bit. The simulator seems to be
// very sensitive to velocity changes.
if (entprop.Velocity == OMV.Vector3.Zero ||
(VehicleType != 0 /*&& !entprop.Velocity.ApproxEquals(RawVelocity, 0.01f)*/) ||
!entprop.Velocity.ApproxEquals(RawVelocity, BSParam.UpdateVelocityChangeThreshold / 2f))
{
terseUpdate = true;
RawVelocity = entprop.Velocity;
}
_acceleration = entprop.Acceleration;
_rotationalVelocity = entprop.RotationalVelocity;
// DetailLog("{0},BSPrim.UpdateProperties,afterAssign,entprop={1}", LocalID, entprop); // DEBUG DEBUG
// The sanity check can change the velocity and/or position.
if (PositionSanityCheck(true /* inTaintTime */))
{
entprop.Position = _position;
entprop.Velocity = RawVelocity;
entprop.RotationalVelocity = _rotationalVelocity;
entprop.Acceleration = _acceleration;
}
// 20131224 not used OMV.Vector3 direction = OMV.Vector3.UnitX * _orientation; // DEBUG DEBUG DEBUG
//DetailLog("{0},BSPrim.UpdateProperties,call,entProp={1},dir={2}", LocalID, entprop, direction);
// remember the current and last set values
LastEntityProperties = CurrentEntityProperties;
CurrentEntityProperties = entprop;
if (terseUpdate)
RequestPhysicsterseUpdate ();
/*
else
{
// 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);
}
*/
}
// Update the physical location and motion of the object. Called with data from Bullet. public abstract void UpdateProperties(EntityProperties entprop);
// Initialization and simulation
public override BulletWorld Initialize(Vector3 maxPosition, ConfigurationParameters parms,
int maxCollisions, ref CollisionDesc[] collisionArray,
int maxUpdates, ref EntityProperties[] updateArray
)
{
// Pin down the memory that will be used to pass object collisions and updates back from unmanaged code
m_paramsHandle = GCHandle.Alloc(parms, GCHandleType.Pinned);
m_collisionArrayPinnedHandle = GCHandle.Alloc(collisionArray, GCHandleType.Pinned);
m_updateArrayPinnedHandle = GCHandle.Alloc(updateArray, GCHandleType.Pinned);
// If Debug logging level, enable logging from the unmanaged code
m_DebugLogCallbackHandle = null;
if (MainConsole.Instance.IsDebugEnabled)
{
MainConsole.Instance.DebugFormat("{0}: Initialize: Setting debug callback for unmanaged code",
BSScene.LogHeader);
//if (PhysicsScene.PhysicsLogging.Enabled)
// The handle is saved in a variable to make sure it doesn't get freed after this call
// m_DebugLogCallbackHandle = new BSAPICPP.DebugLogCallback(BulletLoggerPhysLog);
//else
m_DebugLogCallbackHandle = new BSAPICPP.DebugLogCallback(BulletLogger);
}
// Get the version of the DLL
// TODO: this doesn't work yet. Something wrong with marshaling the returned string.
// BulletEngineVersion = BulletSimAPI.GetVersion2();
BulletEngineVersion = "2.82";
// Call the unmanaged code with the buffers and other information
return new BulletWorldUnman(0, PhysicsScene,
BSAPICPP.Initialize2(maxPosition, m_paramsHandle.AddrOfPinnedObject(),
maxCollisions, m_collisionArrayPinnedHandle.AddrOfPinnedObject(),
maxUpdates, m_updateArrayPinnedHandle.AddrOfPinnedObject(),
m_DebugLogCallbackHandle));
}
// The physics engine says that properties have updated. Update same and inform
// the world that things have changed.
public override void UpdateProperties(EntityProperties entprop)
{
bool needSendUpdate = false;
// Don't change position if standing on a stationary object.
if (!IsStationary)
_position = entprop.Position;
_orientation = entprop.Rotation;
if (entprop.Velocity != OMV.Vector3.Zero && entprop.Velocity.ApproxEquals(OMV.Vector3.Zero, 0.01f) &&
Velocity != OMV.Vector3.Zero)
{
entprop.Velocity = OMV.Vector3.Zero;
entprop.Acceleration = OMV.Vector3.Zero;
entprop.RotationalVelocity = OMV.Vector3.Zero;
Velocity = OMV.Vector3.Zero;
m_ZeroUpdateSent = 3;
needSendUpdate = true;
}
if (!entprop.Velocity.ApproxEquals(RawVelocity, 0.4f))
{
RawVelocity = entprop.Velocity;
needSendUpdate = true;
}
// Do some sanity checking for the avatar. Make sure it's above ground and inbounds.
if (PositionSanityCheck(true))
{
DetailLog("{0},BSCharacter.UpdateProperties,updatePosForSanity,pos={1}", LocalID, _position);
entprop.Position = _position;
}
// animation checks
const float POSITION_TOLERANCE = 5.0f;
float VELOCITY_TOLERANCE = 0.025f * 0.025f;
if (PhysicsScene.TimeDilation < 0.5)
{
float percent = (1f - PhysicsScene.TimeDilation) * 100;
VELOCITY_TOLERANCE *= percent*2;
}
bool VelIsZero = false;
OMV.Vector3 _velocity = Velocity;
int vcntr = 0;
if (Math.Abs(_velocity.X) < 0.01)
{
vcntr++;
_velocity.X = 0;
}
if (Math.Abs(_velocity.Y) < 0.01)
{
vcntr++;
_velocity.Y = 0;
}
if (Math.Abs(_velocity.Z) < 0.01)
{
vcntr++;
_velocity.Z = 0;
}
if (vcntr == 3)
{
Velocity = _velocity;
VelIsZero = true;
}
float vlength = (Velocity - m_lastVelocity).LengthSquared();
float plength = (_position - m_lastPosition).LengthSquared();
if ( vlength > VELOCITY_TOLERANCE || plength > POSITION_TOLERANCE )
{
needSendUpdate = true;
m_ZeroUpdateSent = 3;
}
else if (VelIsZero)
{
if (m_ZeroUpdateSent > 0)
{
needSendUpdate = true;
m_ZeroUpdateSent--;
}
}
if (needSendUpdate)
{
m_lastPosition = _position;
m_lastVelocity = Velocity;
TriggerSignificantMovement();
TriggerMovementUpdate();
// remember the current and last set values
_acceleration = entprop.Acceleration;
_rotationalVelocity = entprop.RotationalVelocity;
LastEntityProperties = CurrentEntityProperties;
CurrentEntityProperties = entprop;
}
// Tell the linkset about value changes
// Linkset.UpdateProperties(UpdatedProperties.EntPropUpdates, this);
// Avatars don't report their changes the usual way. Changes are checked for in the heartbeat loop.
// base.RequestPhysicsterseUpdate();
DetailLog("{0},BSCharacter.UpdateProperties,call,pos={1},orient={2},vel={3},accel={4},rotVel={5}",
LocalID, _position, _orientation, RawVelocity, _acceleration, _rotationalVelocity);
}
// Simulate one timestep
public override void Simulate(float timeStep)
{
// prevent simulation until we've been initialized
if (!m_initialized)
{
return;
}
LastTimeStep = timeStep;
int updatedEntityCount = 0;
int collidersCount = 0;
int beforeTime = 0;
// update the prim states while we know the physics engine is not busy
int numTaints = _taintOperations.Count;
InTaintTime = true; // Only used for debugging so locking is not necessary.
beforeTime = Util.EnvironmentTickCount();
ProcessTaints();
// Some of the physical objects requre individual, pre-step calls
// (vehicles and avatar movement, in particular)
TriggerPreStepEvent(timeStep);
// the prestep actions might have added taints
numTaints += _taintOperations.Count;
ProcessTaints();
StatPhysicsTaintTime = Util.EnvironmentTickCountSubtract(beforeTime);
InTaintTime = false; // Only used for debugging so locking is not necessary.
// The following causes the unmanaged code to output ALL the values found in ALL the objects in the world.
// Only enable this in a limited test world with few objects.
if (m_physicsPhysicalDumpEnabled)
{
PE.DumpAllInfo(World);
}
// step the physical world one interval
m_simulationStep++;
int numSubSteps = 0;
try
{
beforeTime = Util.EnvironmentTickCount();
numSubSteps = PE.PhysicsStep(World, timeStep, m_maxSubSteps, m_fixedTimeStep, out updatedEntityCount,
out collidersCount);
//if (PhysicsLogging.Enabled)
//{
StatContactLoopTime = Util.EnvironmentTickCountSubtract(beforeTime);
DetailLog(
"{0},Simulate,call, frame={1}, nTaints={2}, simTime={3}, substeps={4}, updates={5}, colliders={6}, objWColl={7}",
DetailLogZero, m_simulationStep, numTaints, StatContactLoopTime, numSubSteps,
updatedEntityCount, collidersCount, ObjectsWithCollisions.Count);
//}
}
catch (Exception e)
{
MainConsole.Instance.WarnFormat(
"{0},PhysicsStep Exception: nTaints={1}, substeps={2}, updates={3}, colliders={4}, e={5}",
LogHeader, numTaints, numSubSteps, updatedEntityCount, collidersCount, e);
DetailLog("{0},PhysicsStepException,call, nTaints={1}, substeps={2}, updates={3}, colliders={4}",
DetailLogZero, numTaints, numSubSteps, updatedEntityCount, collidersCount);
updatedEntityCount = 0;
collidersCount = 0;
}
if (PhysicsMetricDumpFrames != 0 && ((m_simulationStep % PhysicsMetricDumpFrames) == 0))
{
PE.DumpPhysicsStatistics(World);
}
// Get a value for 'now' so all the collision and update routines don't have to get their own.
SimulationNowTime = Util.EnvironmentTickCount();
beforeTime = Util.EnvironmentTickCount();
// If there were collisions, process them by sending the event to the prim.
// Collisions must be processed before updates.
if (collidersCount > 0)
{
for (int ii = 0; ii < collidersCount; ii++)
{
uint cA = m_collisionArray[ii].aID;
uint cB = m_collisionArray[ii].bID;
Vector3 point = m_collisionArray[ii].point;
Vector3 normal = m_collisionArray[ii].normal;
float penetration = m_collisionArray[ii].penetration;
SendCollision(cA, cB, point, normal, penetration);
SendCollision(cB, cA, point, -normal, penetration);
}
}
// The above SendCollision's batch up the collisions on the objects.
// Now push the collisions into the simulator.
if (ObjectsWithCollisions.Count > 0)
{
foreach (BSPhysObject bsp in ObjectsWithCollisions)
{
if (!bsp.SendCollisions())
{
// If the object is done colliding, see that it's removed from the colliding list
ObjectsWithNoMoreCollisions.Add(bsp);
}
}
}
// This is a kludge to get avatar movement updates.
// The simulator expects collisions for avatars even if there are have been no collisions.
// The event updates avatar animations and stuff.
// If you fix avatar animation updates, remove this overhead and let normal collision processing happen.
foreach (BSPhysObject bsp in m_avatars)
{
if (!ObjectsWithCollisions.Contains(bsp)) // don't call avatars twice
{
bsp.SendCollisions();
}
}
// Objects that are done colliding are removed from the ObjectsWithCollisions list.
// Not done above because it is inside an iteration of ObjectWithCollisions.
// This complex collision processing is required to create an empty collision
// event call after all real collisions have happened on an object. This enables
// the simulator to generate the 'collision end' event.
if (ObjectsWithNoMoreCollisions.Count > 0)
{
foreach (BSPhysObject po in ObjectsWithNoMoreCollisions)
{
ObjectsWithCollisions.Remove(po);
}
ObjectsWithNoMoreCollisions.Clear();
}
// Done with collisions.
// If any of the objects had updated properties, tell the object it has been changed by the physics engine
if (updatedEntityCount > 0)
{
for (int ii = 0; ii < updatedEntityCount; ii++)
{
EntityProperties entprop = m_updateArray[ii];
BSPhysObject pobj;
if (PhysObjects.TryGetValue(entprop.ID, out pobj))
{
pobj.UpdateProperties(entprop);
}
}
}
StatPhysicsMoveTime = Util.EnvironmentTickCountSubtract(beforeTime);
TriggerPostStepEvent(timeStep);
// The following causes the unmanaged code to output ALL the values found in ALL the objects in the world.
// Only enable this in a limited test world with few objects.
if (m_physicsPhysicalDumpEnabled)
{
PE.DumpAllInfo(World);
}
}
protected void TriggerPreUpdatePropertyAction(ref EntityProperties entprop)
{
PreUpdatePropertyAction actions = OnPreUpdateProperty;
if (actions != null)
actions(ref entprop);
}
void PreUpdateProperty(ref EntityProperties entprop)
{
// A temporary kludge to suppress the rotational effects introduced on vehicles by Bullet
// TODO: handle physics introduced by Bullet with computed vehicle physics.
if (IsActive)
{
entprop.RotationalVelocity = Vector3.Zero;
}
}
public override void UpdateProperties(EntityProperties entprop)
{
// TODO!!! Linkset.ShouldReportPropertyUpdates
if (Linkset.IsRoot(this))
{
// Properties are only updated for the roots of a linkset.
// TODO: this will have to change when linksets are articulated.
base.UpdateProperties(entprop);
}
/*
else
{
// 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);
}
*/
// The linkset might like to know about changing locations
Linkset.UpdateProperties(UpdatedProperties.EntPropUpdates, this);
}