void CPhysicsSpring::AttachListener()
{
if ( !(m_pObjStart->GetCallbackFlags() & CALLBACK_NEVER_DELETED) )
{
m_pObjStart->GetObject()->add_listener_object( this );
}
if ( !(m_pObjEnd->GetCallbackFlags() & CALLBACK_NEVER_DELETED) )
{
m_pObjEnd->GetObject()->add_listener_object( this );
}
}
void CShadowController::AttachObject( void )
{
IVP_Real_Object *pivp = m_pObject->GetObject();
IVP_Core *pCore = pivp->get_core();
m_saveRot = pCore->rot_speed_damp_factor;
m_savedRI = *pCore->get_rot_inertia();
m_savedMass = pCore->get_mass();
m_savedMaterialIndex = m_pObject->GetMaterialIndexInternal();
m_pObject->SetMaterialIndex( MATERIAL_INDEX_SHADOW );
pCore->rot_speed_damp_factor = IVP_U_Float_Point( 100, 100, 100 );
if ( !m_allowPhysicsRotation )
{
IVP_U_Float_Point ri( 1e15f, 1e15f, 1e15f );
pCore->set_rotation_inertia( &ri );
}
if ( !m_allowPhysicsMovement )
{
m_pObject->SetMass( 1e6f );
//pCore->inv_rot_inertia.hesse_val = 0.0f;
m_pObject->EnableGravity( false );
}
pCore->calc_calc();
pivp->get_environment()->get_controller_manager()->add_controller_to_core( this, pCore );
m_shadow.lastPosition.set_to_zero();
}
int CPlayerController::TryTeleportObject( void )
{
if ( m_handler )
{
Vector hlPosition;
ConvertPositionToHL( m_targetPosition, hlPosition );
if ( !m_handler->ShouldMoveTo( m_pObject, hlPosition ) )
return 0;
}
IVP_Real_Object *pivp = m_pObject->GetObject();
IVP_U_Quat targetOrientation;
IVP_U_Point outPosition;
pivp->get_quat_world_f_object_AT( &targetOrientation, &outPosition );
if ( pivp->is_collision_detection_enabled() )
{
m_pObject->EnableCollisions( false );
pivp->beam_object_to_new_position( &targetOrientation, &m_targetPosition, IVP_TRUE );
m_pObject->EnableCollisions( true );
}
else
{
pivp->beam_object_to_new_position( &targetOrientation, &m_targetPosition, IVP_TRUE );
}
return 1;
}
void CPhysicsSpring::DetachListener()
{
if ( !(m_pObjStart->GetCallbackFlags() & CALLBACK_NEVER_DELETED) )
{
m_pObjStart->GetObject()->remove_listener_object( this );
}
if ( !(m_pObjEnd->GetCallbackFlags() & CALLBACK_NEVER_DELETED) )
{
m_pObjEnd->GetObject()->remove_listener_object( this );
}
m_pObjStart = NULL;
m_pObjEnd = NULL;
m_pSpring = NULL;
}
bool CPlayerController::IsInContact( void )
{
IVP_Real_Object *pivp = m_pObject->GetObject();
if ( !pivp->flags.collision_detection_enabled )
return false;
IVP_Synapse_Friction *pfriction = pivp->get_first_friction_synapse();
while ( pfriction )
{
extern IVP_Real_Object *GetOppositeSynapseObject( IVP_Synapse_Friction *pfriction );
IVP_Real_Object *pobj = GetOppositeSynapseObject( pfriction );
if ( pobj->flags.collision_detection_enabled )
{
// skip if this is a static object
if ( !pobj->get_core()->physical_unmoveable && !pobj->get_core()->pinned )
{
CPhysicsObject *pPhys = static_cast<CPhysicsObject *>(pobj->client_data);
// skip if this is a shadow object
// UNDONE: Is this a hack? need a better way to detect shadows?
if ( !(pPhys->GetCallbackFlags() & CALLBACK_SHADOW_COLLISION) )
return true;
}
}
pfriction = pfriction->get_next();
}
return false;
}
void event_object_revived( IVP_Event_Object *pEvent )
{
CPhysicsObject *pObject = static_cast<CPhysicsObject *>(pEvent->real_object->client_data);
if ( !pObject )
return;
int sleepState = pObject->GetSleepState();
pObject->NotifyWake();
// asleep, but already in active list
if ( sleepState == OBJ_STARTSLEEP )
return;
// don't track static objects (like the world). That way we only track objects that will move
if ( pObject->GetObject()->get_movement_state() != IVP_MT_STATIC )
{
Assert(pObject->GetActiveIndex()==0xFFFF);
if ( pObject->GetActiveIndex()!=0xFFFF)
return;
int index = m_activeObjects.AddToTail( pObject );
pObject->SetActiveIndex( index );
}
if ( m_pCallback )
{
m_pCallback->ObjectWake( pObject );
}
}
void CPhysicsMotionController::DetachObject( IPhysicsObject *pObject )
{
CPhysicsObject *pPhys = static_cast<CPhysicsObject *>(pObject);
IVP_Real_Object *pIVP = pPhys->GetObject();
IVP_Core *core = pIVP->get_core();
RemoveCore(core);
}
void CPhysicsSpring::GetEndpoints( Vector* worldPositionStart, Vector* worldPositionEnd )
{
IVP_U_Point world_coords;
if ( worldPositionStart )
{
const IVP_Anchor *anchor = m_pSpring->get_actuator_anchor(0);
TransformLocalToIVP( anchor->object_pos, world_coords, m_pObjStart->GetObject(), true );
ConvertPositionToHL( world_coords, *worldPositionStart );
}
if ( worldPositionEnd )
{
const IVP_Anchor *anchor = m_pSpring->get_actuator_anchor(1);
TransformLocalToIVP( anchor->object_pos, world_coords, m_pObjEnd->GetObject(), true );
ConvertPositionToHL( world_coords, *worldPositionEnd );
}
}
void CPlayerController::AttachObject( void )
{
IVP_Real_Object *pivp = m_pObject->GetObject();
IVP_Core *pCore = pivp->get_core();
m_saveRot = pCore->rot_speed_damp_factor;
pCore->rot_speed_damp_factor = IVP_U_Float_Point( 100, 100, 100 );
pCore->calc_calc();
pivp->get_environment()->get_controller_manager()->add_controller_to_core( this, pCore );
}
void CShadowController::DetachObject( void )
{
IVP_Real_Object *pivp = m_pObject->GetObject();
IVP_Core *pCore = pivp->get_core();
pCore->rot_speed_damp_factor = m_saveRot;
pCore->set_mass( m_savedMass );
pCore->set_rotation_inertia( &m_savedRI ); // this calls calc_calc()
m_pObject = NULL;
pivp->get_environment()->get_controller_manager()->remove_controller_from_core( this, pCore );
}
void CPlayerController::do_simulation_controller( IVP_Event_Sim *es,IVP_U_Vector<IVP_Core> *)
{
if ( !m_enable )
return;
IVP_Real_Object *pivp = m_pObject->GetObject();
IVP_Environment *pIVPEnv = pivp->get_environment();
CPhysicsEnvironment *pVEnv = (CPhysicsEnvironment *)pIVPEnv->client_data;
float psiScale = pVEnv->GetInvPSIScale();
if ( !psiScale )
return;
IVP_Core *pCore = pivp->get_core();
// current situation
const IVP_U_Matrix *m_world_f_core = pCore->get_m_world_f_core_PSI();
const IVP_U_Point *cur_pos_ws = m_world_f_core->get_position();
// ---------------------------------------------------------
// Translation
// ---------------------------------------------------------
IVP_U_Float_Point delta_position; delta_position.subtract( &m_targetPosition, cur_pos_ws);
if (!pivp->flags.shift_core_f_object_is_zero)
{
IVP_U_Float_Point shift_cs_os_ws;
m_world_f_core->vmult3( pivp->get_shift_core_f_object(), &shift_cs_os_ws);
delta_position.subtract( &shift_cs_os_ws );
}
IVP_DOUBLE qdist = delta_position.quad_length();
// UNDONE: This is totally bogus! Measure error using last known estimate
// not current position!
if ( qdist > m_maxDeltaPosition * m_maxDeltaPosition )
{
if ( TryTeleportObject() )
return;
}
// float to allow stepping
if ( m_onground )
{
const IVP_U_Point *pgrav = es->environment->get_gravity();
IVP_U_Float_Point gravSpeed;
gravSpeed.set_multiple( pgrav, es->delta_time );
pCore->speed.subtract( &gravSpeed );
}
ComputeController( pCore->speed, delta_position, m_maxSpeed, psiScale / es->delta_time, m_dampFactor );
}
void CPlayerController::DetachObject( void )
{
if ( !m_pObject )
return;
IVP_Real_Object *pivp = m_pObject->GetObject();
IVP_Core *pCore = pivp->get_core();
pCore->rot_speed_damp_factor = m_saveRot;
pCore->calc_calc();
m_pObject = NULL;
pivp->get_environment()->get_controller_manager()->remove_controller_from_core( this, pCore );
}
void CShadowController::StepUp( float height )
{
Vector step( 0, 0, height );
IVP_Real_Object *pIVP = m_pObject->GetObject();
IVP_U_Quat world_f_object;
IVP_U_Point positionIVP, deltaIVP;
ConvertPositionToIVP( step, deltaIVP );
pIVP->get_quat_world_f_object_AT( &world_f_object, &positionIVP );
positionIVP.add( &deltaIVP );
pIVP->beam_object_to_new_position( &world_f_object, &positionIVP, IVP_TRUE );
}
void CShadowController::InitFromTemplate( const vphysics_save_cshadowcontroller_t &controllerTemplate )
{
m_pObject = controllerTemplate.pObject;
m_secondsToArrival = controllerTemplate.secondsToArrival;
m_saveRot = controllerTemplate.saveRot;
m_savedRI = controllerTemplate.savedRI;
m_currentSpeed = controllerTemplate.currentSpeed;
m_savedMass = controllerTemplate.savedMass;
m_savedMaterialIndex = controllerTemplate.savedMaterial;
m_enable = controllerTemplate.enable;
m_allowPhysicsMovement = controllerTemplate.allowPhysicsMovement;
m_allowPhysicsRotation = controllerTemplate.allowPhysicsRotation;
ConvertShadowControllerToIVP( controllerTemplate.shadowParams, m_shadow );
m_pObject->GetObject()->get_environment()->get_controller_manager()->add_controller_to_core( this, m_pObject->GetObject()->get_core() );
}
void CPlayerController::MaxSpeed( const Vector &velocity )
{
IVP_Core *pCore = m_pObject->GetObject()->get_core();
IVP_U_Float_Point ivpVel;
ConvertPositionToIVP( velocity, ivpVel );
IVP_U_Float_Point available = ivpVel;
// normalize and save length
float length = ivpVel.real_length_plus_normize();
float dot = ivpVel.dot_product( &pCore->speed );
if ( dot > 0 )
{
ivpVel.mult( dot * length );
available.subtract( &ivpVel );
}
IVP_Float_PointAbs( m_maxSpeed, available );
}
void CShadowController::do_simulation_controller( IVP_Event_Sim *es,IVP_U_Vector<IVP_Core> *)
{
if ( m_enable )
{
IVP_Real_Object *pivp = m_pObject->GetObject();
ComputeShadowControllerIVP( pivp, m_shadow, m_secondsToArrival, es->delta_time );
// if we have time left, subtract it off
m_secondsToArrival -= es->delta_time;
if ( m_secondsToArrival < 0 )
{
m_secondsToArrival = 0;
}
}
else
{
m_shadow.lastPosition.set_to_zero();
}
}
void CPlayerController::Update( const Vector& position, const Vector& velocity, bool onground, IPhysicsObject *ground )
{
IVP_U_Point targetPositionIVP;
IVP_U_Float_Point targetSpeedIVP;
ConvertPositionToIVP( position, targetPositionIVP );
ConvertPositionToIVP( velocity, targetSpeedIVP );
// if the object hasn't moved, abort
if ( targetSpeedIVP.quad_distance_to( &m_currentSpeed ) < 1e-6 )
{
if ( targetPositionIVP.quad_distance_to( &m_targetPosition ) < 1e-6 )
{
return;
}
}
m_targetPosition = targetPositionIVP;
m_currentSpeed = targetSpeedIVP;
IVP_Real_Object *pivp = m_pObject->GetObject();
IVP_Core *pCore = pivp->get_core();
IVP_Environment *pEnv = pivp->get_environment();
pEnv->get_controller_manager()->ensure_core_in_simulation(pCore);
m_enable = true;
// m_onground makes this object anti-grav
// UNDONE: Re-evaluate this
m_onground = false;//onground;
if ( velocity.LengthSqr() <= 0.1f )
{
// no input velocity, just go where physics takes you.
m_enable = false;
ground = NULL;
}
else
{
MaxSpeed( velocity );
}
}
void CPhysicsMotionController::AttachObject( IPhysicsObject *pObject )
{
Assert(pObject);
// BUGBUG: Sometimes restore comes back with a NULL, REVISIT
if ( !pObject || pObject->IsStatic() )
return;
CPhysicsObject *pPhys = static_cast<CPhysicsObject *>(pObject);
IVP_Real_Object *pIVP = pPhys->GetObject();
IVP_Core *pCore = pIVP->get_core();
#if DEBUG
int index = m_coreList.Find(pCore);
if ( m_coreList.IsValidIndex(index) )
{
Msg("Attached core twice!!!\n");
return;
}
#endif
m_coreList.AddToTail( pCore );
pCore->add_core_controller( (IVP_Controller *)this );
}
void CShadowController::MaxSpeed( const Vector &velocity, const AngularImpulse &angularVelocity )
{
IVP_Core *pCore = m_pObject->GetObject()->get_core();
// limit additional velocity to that which is not amplifying the current velocity
IVP_U_Float_Point ivpVel;
ConvertPositionToIVP( velocity, ivpVel );
IVP_U_Float_Point available = ivpVel;
m_currentSpeed = ivpVel;
// normalize and save length
float length = ivpVel.real_length_plus_normize();
float dot = ivpVel.dot_product( &pCore->speed );
if ( dot > 0 )
{
ivpVel.mult( dot * length );
available.subtract( &ivpVel );
}
IVP_Float_PointAbs( m_shadow.maxSpeed, available );
// same for angular, project on to current and remove redundant (amplifying) input
IVP_U_Float_Point ivpAng;
ConvertAngularImpulseToIVP( angularVelocity, ivpAng );
IVP_U_Float_Point availableAng = ivpAng;
float lengthAng = ivpAng.real_length_plus_normize();
float dotAng = ivpAng.dot_product( &pCore->rot_speed );
if ( dotAng > 0 )
{
ivpAng.mult( dotAng * lengthAng );
availableAng.subtract( &ivpAng );
}
IVP_Float_PointAbs( m_shadow.maxAngular, availableAng );
}
//-----------------------------------------------------------------------------
// Purpose: This walks the objects in the environment and generates friction events
// for any scraping that is occurring.
//-----------------------------------------------------------------------------
void ProcessActiveObjects( IVP_Environment *pEnvironment, IPhysicsCollisionEvent *pEvent )
{
// FIXME: Is this correct? Shouldn't it do next PSI - lastScrape?
float nextTime = pEnvironment->get_old_time_of_last_PSI().get_time();
float delta = nextTime - m_lastScrapeTime;
// only process if we have done a PSI
if ( delta < pEnvironment->get_delta_PSI_time() )
return;
float t = 1.0f;
t /= delta;
if ( t > 10.0f )
t = 10.0f;
m_lastScrapeTime = nextTime;
// UNDONE: This only calls friciton for one object in each pair.
// UNDONE: Split energy in half and call for both objects?
// UNDONE: Don't split/call if one object is static (like the world)?
for ( int i = 0; i < m_activeObjects.Count(); i++ )
{
CPhysicsObject *pObject = m_activeObjects[i];
IVP_Real_Object *ivpObject = pObject->GetObject();
// no friction callbacks for this object
if ( ! (pObject->GetCallbackFlags() & CALLBACK_GLOBAL_FRICTION) )
continue;
// UNDONE: IVP_Synapse_Friction is supposed to be opaque. Is there a better way
// to implement this? Using the friction listener is much more work for the CPU
// and considers sleeping objects.
IVP_Synapse_Friction *pfriction = ivpObject->get_first_friction_synapse();
while ( pfriction )
{
IVP_Contact_Point *contact = pfriction->get_contact_point();
IVP_Synapse_Friction *pOpposite = GetOppositeSynapse( pfriction );
IVP_Real_Object *pobj = pOpposite->get_object();
CPhysicsObject *pScrape = (CPhysicsObject *)pobj->client_data;
// friction callbacks for this object?
if ( pScrape->GetCallbackFlags() & CALLBACK_GLOBAL_FRICTION )
{
float energy = IVP_Contact_Point_API::get_eliminated_energy( contact );
if ( energy )
{
IVP_Contact_Point_API::reset_eliminated_energy( contact );
// scrape with an estimate for the energy per unit mass
// This assumes that the game is interested in some measure of vibration
// for sound effects. This also assumes that more massive objects require
// more energy to vibrate.
energy = energy * t * ivpObject->get_core()->get_inv_mass();
if ( energy > 0.05f )
{
int hitSurface = physprops->RemapIVPMaterialIndex( pOpposite->get_material_index() );
CPhysicsFrictionData data(pfriction);
pEvent->Friction( pObject, ConvertEnergyToHL(energy), pObject->GetMaterialIndexInternal(), hitSurface, &data );
}
}
}
pfriction = pfriction->get_next();
}
}
}
