Danbias/Code/GamePhysics/Implementation/SphericalRigidBody.cpp

405 lines
13 KiB
C++

#include "SphericalRigidBody.h"
#include "PhysicsAPI_Impl.h"
using namespace ::Oyster::Physics;
using namespace ::Oyster::Physics3D;
using namespace ::Oyster::Math3D;
using namespace ::Oyster::Collision3D;
using namespace ::Utility::DynamicMemory;
using namespace ::Utility::Value;
SphericalRigidBody::SphericalRigidBody()
{
this->rigid = RigidBody();
this->rigid.SetMass_KeepMomentum( 16.0f );
this->gravityNormal = Float3::null;
this->onCollision = Default::EventAction_BeforeCollisionResponse;
this->onCollisionResponse = Default::EventAction_AfterCollisionResponse;
this->onMovement = Default::EventAction_Move;
this->collisionRebound.previousSpatial.center = this->rigid.centerPos;
this->collisionRebound.previousSpatial.axis = this->rigid.axis;
this->collisionRebound.previousSpatial.reach = this->rigid.boundingReach;
this->collisionRebound.timeOfContact = 1.0f;
this->scene = nullptr;
this->customTag = nullptr;
this->ignoreGravity = this->isForwarded = false;
}
SphericalRigidBody::SphericalRigidBody( const API::SphericalBodyDescription &desc )
{
this->rigid = RigidBody();
this->rigid.SetRotation( desc.rotation );
this->rigid.centerPos = desc.centerPosition;
this->rigid.boundingReach = Float4( desc.radius, desc.radius, desc.radius, 0.0f );
this->rigid.restitutionCoeff = desc.restitutionCoeff;
this->rigid.frictionCoeff_Static = desc.frictionCoeff_Static;
this->rigid.frictionCoeff_Kinetic = desc.frictionCoeff_Dynamic;
this->rigid.SetMass_KeepMomentum( desc.mass );
this->rigid.SetMomentOfInertia_KeepMomentum( MomentOfInertia::Sphere(desc.mass, desc.radius) );
this->deltaPos = Float4::null;
this->deltaAxis = Float4::null;
this->gravityNormal = Float3::null;
this->collisionRebound.previousSpatial.center = this->rigid.centerPos;
this->collisionRebound.previousSpatial.axis = this->rigid.axis;
this->collisionRebound.previousSpatial.reach = this->rigid.boundingReach;
this->collisionRebound.timeOfContact = 1.0f;
if( desc.subscription_onCollision )
{
this->onCollision = desc.subscription_onCollision;
}
else
{
this->onCollision = Default::EventAction_BeforeCollisionResponse;
}
if( desc.subscription_onCollisionResponse )
{
this->onCollisionResponse = desc.subscription_onCollisionResponse;
}
else
{
this->onCollisionResponse = Default::EventAction_AfterCollisionResponse;
}
if( desc.subscription_onMovement )
{
this->onMovement= desc.subscription_onMovement;
}
else
{
this->onMovement = Default::EventAction_Move;
}
this->scene = nullptr;
this->customTag = nullptr;
this->ignoreGravity = desc.ignoreGravity;
this->collisionRebound.previousSpatial.center = this->rigid.centerPos;
this->collisionRebound.previousSpatial.axis = this->rigid.axis;
this->collisionRebound.previousSpatial.reach = this->rigid.boundingReach;
this->collisionRebound.timeOfContact = 1.0f;
}
SphericalRigidBody::~SphericalRigidBody() {}
UniquePointer<ICustomBody> SphericalRigidBody::Clone() const
{
return new SphericalRigidBody( *this );
}
SphericalRigidBody::State SphericalRigidBody::GetState() const
{
return State( this->rigid.GetMass(), this->rigid.restitutionCoeff,
this->rigid.frictionCoeff_Static, this->rigid.frictionCoeff_Kinetic,
this->rigid.GetMomentOfInertia(), this->rigid.boundingReach,
this->rigid.centerPos, this->rigid.axis,
this->rigid.momentum_Linear, this->rigid.momentum_Angular );
}
SphericalRigidBody::State & SphericalRigidBody::GetState( SphericalRigidBody::State &targetMem ) const
{
return targetMem = State( this->rigid.GetMass(), this->rigid.restitutionCoeff,
this->rigid.frictionCoeff_Static, this->rigid.frictionCoeff_Kinetic,
this->rigid.GetMomentOfInertia(), this->rigid.boundingReach,
this->rigid.centerPos, this->rigid.axis,
this->rigid.momentum_Linear, this->rigid.momentum_Angular );
}
void SphericalRigidBody::SetState( const SphericalRigidBody::State &state )
{
this->rigid.centerPos = state.GetCenterPosition();
this->rigid.axis = state.GetAngularAxis();
this->rigid.boundingReach = state.GetReach();
this->rigid.momentum_Linear = state.GetLinearMomentum();
this->rigid.momentum_Angular = state.GetAngularMomentum();
this->rigid.impulse_Linear += state.GetLinearImpulse();
this->rigid.impulse_Angular += state.GetAngularImpulse();
this->rigid.restitutionCoeff = state.GetRestitutionCoeff();
this->rigid.frictionCoeff_Static = state.GetFrictionCoeff_Static();
this->rigid.frictionCoeff_Kinetic = state.GetFrictionCoeff_Kinetic();
this->rigid.SetMass_KeepMomentum( state.GetMass() );
this->rigid.SetMomentOfInertia_KeepMomentum( state.GetMomentOfInertia() );
this->rigid.gravityNormal = state.GetGravityNormal();
if( state.IsForwarded() )
{
this->deltaPos += Float4(state.GetForward_DeltaPos(), 0);
this->deltaAxis += Float4(state.GetForward_DeltaAxis());
this->isForwarded = false;
}
if( this->scene )
{
if( state.IsSpatiallyAltered() )
{
unsigned int tempRef = this->scene->GetTemporaryReferenceOf( this );
this->scene->SetAsAltered( tempRef );
this->scene->EvaluatePosition( tempRef );
}
else if( state.IsDisturbed() )
{
this->scene->SetAsAltered( this->scene->GetTemporaryReferenceOf(this) );
}
}
}
ICustomBody::SubscriptMessage SphericalRigidBody::CallSubscription_BeforeCollisionResponse( const ICustomBody *deuter )
{
return this->onCollision( this, deuter );
}
void SphericalRigidBody::CallSubscription_AfterCollisionResponse( const ICustomBody *deuter, Float kineticEnergyLoss )
{
this->onCollisionResponse( this, deuter, kineticEnergyLoss);
}
void SphericalRigidBody::CallSubscription_Move()
{
this->onMovement( this );
}
bool SphericalRigidBody::IsAffectedByGravity() const
{
return !this->ignoreGravity;
}
bool SphericalRigidBody::Intersects( const ICollideable &shape ) const
{
return Sphere( this->rigid.centerPos, this->rigid.boundingReach.x ).Intersects( shape );
}
bool SphericalRigidBody::Intersects( const ICollideable &shape, Float4 &worldPointOfContact ) const
{
return Sphere( this->rigid.centerPos, this->rigid.boundingReach.x ).Intersects( shape, worldPointOfContact );
}
bool SphericalRigidBody::Intersects( const ICustomBody &object, Float4 &worldPointOfContact ) const
{
return object.Intersects( Sphere(this->rigid.centerPos, this->rigid.boundingReach.x), worldPointOfContact );
}
void SphericalRigidBody::SetTimeOfContact( Float4 &worldPointOfContact )
{
Point pointOfContact = Point( worldPointOfContact );
Sphere start = Sphere( this->collisionRebound.previousSpatial.center, this->collisionRebound.previousSpatial.reach.x );
Sphere end = Sphere( this->rigid.centerPos, this->rigid.boundingReach.x );
Float timeOfContact = ::Oyster::Collision3D::Utility::TimeOfContact( start, end, pointOfContact );
this->collisionRebound.timeOfContact = Min( this->collisionRebound.timeOfContact, timeOfContact );
}
Sphere & SphericalRigidBody::GetBoundingSphere( Sphere &targetMem ) const
{
return targetMem = Sphere( this->rigid.centerPos, this->rigid.boundingReach.x );
}
Float4 & SphericalRigidBody::GetNormalAt( const Float4 &worldPos, Float4 &targetMem ) const
{
targetMem = Float4( worldPos.xyz - this->rigid.centerPos, 0);
Float magnitude = targetMem.GetMagnitude();
if( magnitude != 0.0f )
{ // sanity check
targetMem.Normalize();
}
return targetMem;
}
Float3 & SphericalRigidBody::GetGravityNormal( Float3 &targetMem ) const
{
return targetMem = this->gravityNormal;
}
void * SphericalRigidBody::GetCustomTag() const
{
return this->customTag;
}
//Float3 & SphericalRigidBody::GetCenter( Float3 &targetMem ) const
//{
// return targetMem = this->rigid.centerPos;
//}
//
//Float4x4 & SphericalRigidBody::GetRotation( Float4x4 &targetMem ) const
//{
// return targetMem = this->rigid.box.rotation;
//}
//
//Float4x4 & SphericalRigidBody::GetOrientation( Float4x4 &targetMem ) const
//{
// return targetMem = this->rigid.GetOrientation();
//}
//
//Float4x4 & SphericalRigidBody::GetView( Float4x4 &targetMem ) const
//{
// return targetMem = this->rigid.GetView();
//}
//Float3 SphericalRigidBody::GetRigidLinearVelocity() const
//{
// return this->rigid.GetLinearVelocity();
//}
UpdateState SphericalRigidBody::Update( Float timeStepLength )
{
if( this->collisionRebound.timeOfContact < 1.0f )
{ // Rebound if needed
this->rigid.centerPos = Lerp( this->collisionRebound.previousSpatial.center, this->rigid.centerPos, this->collisionRebound.timeOfContact );
this->rigid.SetRotation( Lerp(this->collisionRebound.previousSpatial.axis, this->rigid.axis, this->collisionRebound.timeOfContact) );
this->rigid.boundingReach = Lerp( this->collisionRebound.previousSpatial.reach, this->rigid.boundingReach, this->collisionRebound.timeOfContact );
this->collisionRebound.timeOfContact = 1.0f;
}
// Maintain rotation resolution by keeping axis within [0, 2pi] (trigonometric methods gets faster too)
Float4 temp;
::std::modf( this->rigid.axis * (0.5f / pi), temp.xyz );
this->rigid.axis -= ((2.0f * pi) * temp).xyz;
// Update rebound data
this->collisionRebound.previousSpatial.center = this->rigid.centerPos;
this->collisionRebound.previousSpatial.axis = this->rigid.axis;
this->collisionRebound.previousSpatial.reach = this->rigid.boundingReach;
// Check if this is close enough to be set resting
temp = Float4( this->rigid.impulse_Linear, 0.0f ) + Float4( this->rigid.impulse_Angular, 0.0f );
if( temp.Dot(temp) <= (Constant::epsilon * Constant::epsilon) )
{
unsigned char resting = 0;
if( this->rigid.momentum_Linear.Dot(this->rigid.momentum_Linear) <= (Constant::epsilon * Constant::epsilon) )
{
this->rigid.momentum_Linear = Float3::null;
resting = 1;
}
if( this->rigid.momentum_Angular.Dot(this->rigid.momentum_Angular) <= (Constant::epsilon * Constant::epsilon) )
{
this->rigid.momentum_Angular = Float3::null;
++resting;
}
if( resting == 2 )
{
this->rigid.impulse_Linear = this->rigid.impulse_Angular = Float3::null;
return UpdateState_resting;
}
}
this->rigid.Update_LeapFrog( timeStepLength );
return UpdateState_altered;
}
void SphericalRigidBody::Predict( ::Oyster::Math::Float4 &outDeltaPos, ::Oyster::Math::Float4 &outDeltaAxis, const ::Oyster::Math::Float4 &actingLinearImpulse, const ::Oyster::Math::Float4 &actingAngularImpulse, ::Oyster::Math::Float deltaTime )
{
this->rigid.Predict_LeapFrog( outDeltaPos.xyz, outDeltaAxis.xyz, actingLinearImpulse.xyz, actingAngularImpulse.xyz, deltaTime );
}
void SphericalRigidBody::SetSubscription( ICustomBody::EventAction_BeforeCollisionResponse functionPointer )
{
if( functionPointer )
{
this->onCollision = functionPointer;
}
else
{
this->onCollision = Default::EventAction_BeforeCollisionResponse;
}
}
void SphericalRigidBody::SetSubscription( ICustomBody::EventAction_AfterCollisionResponse functionPointer )
{
if( functionPointer )
{
this->onCollisionResponse = functionPointer;
}
else
{
this->onCollisionResponse = Default::EventAction_AfterCollisionResponse;
}
}
void SphericalRigidBody::SetSubscription( ICustomBody::EventAction_Move functionPointer )
{
if( functionPointer )
{
this->onMovement = functionPointer;
}
else
{
this->onMovement = Default::EventAction_Move;
}
}
void SphericalRigidBody::SetScene( void *scene )
{
this->scene = (Octree*)scene;
}
void SphericalRigidBody::SetGravity( bool ignore )
{
this->ignoreGravity = ignore;
this->gravityNormal = Float3::null;
}
void SphericalRigidBody::SetGravityNormal( const Float3 &normalizedVector )
{
this->gravityNormal = normalizedVector;
}
void SphericalRigidBody::SetCustomTag( void *ref )
{
this->customTag = ref;
}
//void SphericalRigidBody::SetMomentOfInertiaTensor_KeepVelocity( const Float4x4 &localI )
//{
// this->rigid.SetMomentOfInertia_KeepVelocity( localI );
//}
//
//void SphericalRigidBody::SetMomentOfInertiaTensor_KeepMomentum( const Float4x4 &localI )
//{
// this->rigid.SetMomentOfInertia_KeepMomentum( localI );
//}
//
//void SphericalRigidBody::SetMass_KeepVelocity( Float m )
//{
// this->rigid.SetMass_KeepVelocity( m );
//}
//
//void SphericalRigidBody::SetMass_KeepMomentum( Float m )
//{
// this->rigid.SetMass_KeepMomentum( m );
//}
//
//void SphericalRigidBody::SetCenter( const Float3 &worldPos )
//{
// this->rigid.SetCenter( worldPos );
// this->body.center = worldPos;
//}
//
//void SphericalRigidBody::SetRotation( const Float4x4 &rotation )
//{
// this->rigid.SetRotation( rotation );
//}
//
//void SphericalRigidBody::SetOrientation( const Float4x4 &orientation )
//{
// this->rigid.SetOrientation( orientation );
// this->body.center = orientation.v[3].xyz;
//}
//
//void SphericalRigidBody::SetSize( const Float3 &size )
//{
// this->rigid.SetSize( size );
// this->body.radius = 0.5f * Min( Min( size.x, size.y ), size.z ); // inline Min( FloatN )?
//}
//
//void SphericalRigidBody::SetMomentum( const Float3 &worldG )
//{
// this->rigid.SetLinearMomentum( worldG );
//}