public void DeletePairedActors()
{
using (CreateCoreAndScene())
{
Actor actorA, actorB;
{
ActorDescription actorDesc = new ActorDescription()
{
Shapes = { new BoxShapeDescription(5, 6, 7) }
};
actorA = this.Scene.CreateActor(actorDesc);
}
{
ActorDescription actorDesc = new ActorDescription()
{
Shapes = { new BoxShapeDescription(2, 5, 7) }
};
actorB = this.Scene.CreateActor(actorDesc);
}
this.Scene.SetActorPairFlags(actorA, actorB, ContactPairFlag.All);
ContactPairFlag pairFlags = this.Scene.GetActorPairFlags(actorA, actorB);
actorB.Dispose();
actorA.Dispose();
}
}
public void OnContactNotify(ContactPair contactInformation, ContactPairFlag events)
{
if (contactNofityEvent != null)
{
contactNofityEvent(contactInformation, events);
}
}
// PhysX calls OnContactNotify is the base class which you then provide the implementation for
public override void OnContactNotify(ContactPair contactInformation, ContactPairFlag events)
{
Actor a = contactInformation.ActorA;
Actor b = contactInformation.ActorB;
// This shouldn't be O(n)
foreach (ContactReportPair pair in _contactPairs)
{
if ((pair.ActorA == a || pair.ActorA == b) && (pair.ActorB == a || pair.ActorB == b))
{
pair.Callback(a, b, events);
}
}
}
// PhysX calls OnContactNotify is the base class which you then provide the implementation for
public override void OnContactNotify(ContactPair contactInformation, ContactPairFlag events)
{
Actor a = contactInformation.ActorA;
Actor b = contactInformation.ActorB;
// This shouldn't be O(n)
foreach (ContactReportPair pair in _contactPairs)
{
if ((pair.ActorA == a || pair.ActorA == b) && (pair.ActorB == a || pair.ActorB == b))
{
pair.Callback(a, b, events);
}
}
}
public override void OnContactNotify(ContactPair contactInformation, ContactPairFlag events)
{
ContactStreamIterator iter;
using (iter = new ContactStreamIterator(contactInformation.ContactStream))
{
while (iter.GoToNextPair())
{
while (iter.GoToNextPatch())
{
while (iter.GoToNextPoint())
{
// Test each of the available 'information' functions/properties
int numberOfPairs = iter.GetNumberOfPairs();
Shape shapeA = iter.GetShapeA();
Shape shapeB = iter.GetShapeB();
bool isShapeADeleted = iter.IsDeletedShapeA();
bool isShapeBDeleted = iter.IsDeletedShapeB();
ShapeFlag shapeFlags = iter.GetShapeFlags();
int numberOfPatches = iter.GetNumberOfPatches();
int numberOfPatchesRemaining = iter.GetNumberOfPatchesRemaining();
Vector3 patchNormal = iter.GetPatchNormal();
int numberOfPoints = iter.GetNumberOfPoints();
int numberOfPointsRemaining = iter.GetNumberOfPointsRemaining();
Vector3 point = iter.GetPoint();
float separation = iter.GetSeperation();
int featureIndex0 = iter.GetFeatureIndex0();
int featureIndex1 = iter.GetFeatureIndex1();
float pointNormalForce = iter.GetPointNormalForce();
// First collision should be AB
if (IsPairContacting(shapeA, A, B) && IsPairContacting(shapeB, A, B))
{
ABHitCallback();
}
// Second collision should be BC, but only if AB has happened
if (IsPairContacting(shapeA, B, C) && IsPairContacting(shapeB, B, C))
{
BCHitCallback();
}
}
}
}
}
Assert.IsTrue(iter.IsDisposed);
}
public override void OnContactNotify(ContactPair contactInformation, ContactPairFlag events)
{
Engine.OnContactNotify(contactInformation, events);
}
private void CapsuleAndGroundPlaneContact(Actor a, Actor b, ContactPairFlag events)
{
// The capsule hit the ground, add some bounce
// Can be done with materials, but this just an example to demonstrate contact report
_demo.ContactReportActor.AddForce(new Vector3(0, 5000, 0), ForceMode.Force);
}
public override void OnContactNotify(ContactPair contactInfo, ContactPairFlag events)
{
using (ContactStreamIterator iter = new ContactStreamIterator(contactInfo.ContactStream))
{
//if we are looking at the player car
if (contactInfo.ActorB.Group == PhysXConsts.VehicleId)
{
Vehicle vehicle = (Vehicle)contactInfo.ActorB.UserData;
while (iter.GoToNextPair())
{
while (iter.GoToNextPatch())
{
while (iter.GoToNextPoint())
{
if (contactInfo.ActorA.Group == PhysXConsts.TrackId && iter.GetShapeB() is WheelShape)
{
continue; //we dont want to know each time a wheel is touching the ground
}
Vector3 pos = iter.GetPoint();
if (contactInfo.ActorA.UserData is NonCar)
{
HandleNonCarCollision(vehicle, (NonCar)contactInfo.ActorA.UserData, pos, iter.GetPatchNormal(), contactInfo.NormalForce, events);
return;
}
float force = contactInfo.NormalForce.Length(); // iter.GetPointNormalForce();
if (force == 0)
{
continue;
}
//GameConsole.WriteEvent(force.ToString());
if (force > 0)
{
if (contactInfo.ActorA.Group == PhysXConsts.VehicleId)
{
Vehicle vehicle2 = (Vehicle)contactInfo.ActorA.UserData;
//2 vehicle collision
force = iter.GetPointNormalForce();
Vector3 normal = contactInfo.NormalForce;
normal.Normalize();
if (vehicle.Driver is CpuDriver && vehicle2.Driver is PlayerDriver)
{
((CpuDriver)vehicle.Driver).OnPlayerHit(force);
}
else if (vehicle2.Driver is CpuDriver && vehicle.Driver is PlayerDriver)
{
((CpuDriver)vehicle2.Driver).OnPlayerHit(force);
}
// stop cars rearing up if they are both trying to push each other.
if (vehicle.Chassis.Wheels.Find(a => !a.IsRear && a.InAir) != null)
{
vehicle.Chassis.Actor.AddForceAtPosition(Vector3.Down * 0.35f * force, pos, ForceMode.Force);
}
if (vehicle2.Chassis.Wheels.Find(a => !a.IsRear && a.InAir) != null)
{
vehicle2.Chassis.Actor.AddForceAtPosition(Vector3.Down * 0.35f * force, pos, ForceMode.Force);
}
vehicle.OnCollision(force * 2, pos, normal, true);
vehicle2.OnCollision(force * 2, pos, normal, true);
}
else
{
Vector3 normal = contactInfo.NormalForce;
normal.Normalize();
if (iter.GetPointNormalForce() != 0)
{
force = iter.GetPointNormalForce();
}
vehicle.OnCollision(force, pos, iter.GetPatchNormal(), true);
//return;
}
}
}
}
}
}
// a non-car object sliding along the track
else if (contactInfo.ActorB.Group == PhysXConsts.NonCarId && contactInfo.ActorA.Group == PhysXConsts.TrackId)
{
if (contactInfo.ActorB.LinearVelocity.Length() > 4)
{
while (iter.GoToNextPair())
{
while (iter.GoToNextPatch())
{
while (iter.GoToNextPoint())
{
Vector3 pos = iter.GetPoint();
GameVars.SparksEmitter.Update(pos);
}
}
}
}
}
}
}
private void HandleNonCarCollision(Vehicle vehicle, NonCar nonCar, Vector3 pos, Vector3 patchnormal, Vector3 normalforce, ContactPairFlag events)
{
if (nonCar.LastTouchTime + 0.1f > GameEngine.TotalSeconds)
{
nonCar.LastTouchTime = GameEngine.TotalSeconds;
return;
}
nonCar.LastVehicleToHit = vehicle;
if (nonCar.IsAttached)
{
if (normalforce == Vector3.Zero)
{
return;
}
nonCar.Hit = true;
float speed = vehicle.Chassis.LastSpeeds.GetMax();
if (speed < 20)
{
return;
}
normalforce = Vector3.Normalize(normalforce);
Vector3 directedForce = normalforce * speed * vehicle.Config.Mass;
float factor = (1 / (nonCar.Config.TorqueRequiredToMove * nonCar.Config.MassWhenAttached)) * 0.005f;
nonCar.Rotation.X += -directedForce.X * factor;
nonCar.Rotation.Z += directedForce.Z * factor;
nonCar.LastTouchTime = GameEngine.TotalSeconds;
nonCar.LastForcePosition = pos;
nonCar.LastForce = directedForce;
//multiply force to match the force generated by hitting a solid wall/barrier etc
vehicle.OnCollision(directedForce.Length() * 15, pos, normalforce, true);
}
else
{
vehicle.OnCollision(normalforce.Length(), pos, normalforce, false);
}
nonCar.LastTouchTime = GameEngine.TotalSeconds;
}
private void CapsuleAndGroundPlaneContact(Actor a, Actor b, ContactPairFlag events)
{
// The capsule hit the ground, add some bounce
// Can be done with materials, but this just an example to demonstrate contact report
_contactReportActor.AddForce(new Vector3(0, 5000, 0), ForceMode.Force);
}
public override void OnContactNotify( ContactPair contactInformation, ContactPairFlag events )
{
ContactStreamIterator iter;
using( iter = new ContactStreamIterator( contactInformation.ContactStream ) )
{
while( iter.GoToNextPair() )
{
while( iter.GoToNextPatch() )
{
while( iter.GoToNextPoint() )
{
// Test each of the available 'information' functions/properties
int numberOfPairs = iter.GetNumberOfPairs();
Shape shapeA = iter.GetShapeA();
Shape shapeB = iter.GetShapeB();
bool isShapeADeleted = iter.IsDeletedShapeA();
bool isShapeBDeleted = iter.IsDeletedShapeB();
ShapeFlag shapeFlags = iter.GetShapeFlags();
int numberOfPatches = iter.GetNumberOfPatches();
int numberOfPatchesRemaining = iter.GetNumberOfPatchesRemaining();
Vector3 patchNormal = iter.GetPatchNormal();
int numberOfPoints = iter.GetNumberOfPoints();
int numberOfPointsRemaining = iter.GetNumberOfPointsRemaining();
Vector3 point = iter.GetPoint();
float separation = iter.GetSeperation();
int featureIndex0 = iter.GetFeatureIndex0();
int featureIndex1 = iter.GetFeatureIndex1();
float pointNormalForce = iter.GetPointNormalForce();
// First collision should be AB
if( IsPairContacting( shapeA, A, B ) && IsPairContacting( shapeB, A, B ) )
{
ABHitCallback();
}
// Second collision should be BC, but only if AB has happened
if( IsPairContacting( shapeA, B, C ) && IsPairContacting( shapeB, B, C ) )
{
BCHitCallback();
}
}
}
}
}
Assert.IsTrue( iter.IsDisposed );
}
public override void OnContactNotify(ContactPair contactInfo, ContactPairFlag events)
{
using (ContactStreamIterator iter = new ContactStreamIterator(contactInfo.ContactStream))
{
//if we are looking at the player car
if (contactInfo.ActorB.Group == PhysXConsts.VehicleId)
{
Vehicle vehicle = (Vehicle)contactInfo.ActorB.UserData;
while (iter.GoToNextPair())
{
while (iter.GoToNextPatch())
{
while (iter.GoToNextPoint())
{
if (contactInfo.ActorA.Group == PhysXConsts.TrackId && iter.GetShapeB() is WheelShape)
continue; //we dont want to know each time a wheel is touching the ground
Vector3 pos = iter.GetPoint();
if (contactInfo.ActorA.UserData is NonCar)
{
HandleNonCarCollision(vehicle, (NonCar)contactInfo.ActorA.UserData, pos, iter.GetPatchNormal(), contactInfo.NormalForce, events);
return;
}
float force = contactInfo.NormalForce.Length(); // iter.GetPointNormalForce();
if (force == 0) continue;
//GameConsole.WriteEvent(force.ToString());
if (force > 0)
{
if (contactInfo.ActorA.Group == PhysXConsts.VehicleId)
{
Vehicle vehicle2 = (Vehicle)contactInfo.ActorA.UserData;
//2 vehicle collision
force = iter.GetPointNormalForce();
Vector3 normal = contactInfo.NormalForce;
normal.Normalize();
if (vehicle.Driver is CpuDriver && vehicle2.Driver is PlayerDriver)
{
((CpuDriver)vehicle.Driver).OnPlayerHit(force);
}
else if (vehicle2.Driver is CpuDriver && vehicle.Driver is PlayerDriver)
{
((CpuDriver)vehicle2.Driver).OnPlayerHit(force);
}
// stop cars rearing up if they are both trying to push each other.
if (vehicle.Chassis.Wheels.Find(a => !a.IsRear && a.InAir) != null)
{
vehicle.Chassis.Actor.AddForceAtPosition(Vector3.Down * 0.35f * force, pos, ForceMode.Force);
}
if (vehicle2.Chassis.Wheels.Find(a => !a.IsRear && a.InAir) != null)
{
vehicle2.Chassis.Actor.AddForceAtPosition(Vector3.Down * 0.35f * force, pos, ForceMode.Force);
}
vehicle.OnCollision(force * 2, pos, normal, true);
vehicle2.OnCollision(force * 2, pos, normal, true);
}
else
{
Vector3 normal = contactInfo.NormalForce;
normal.Normalize();
if (iter.GetPointNormalForce() != 0)
force = iter.GetPointNormalForce();
vehicle.OnCollision(force, pos, iter.GetPatchNormal(), true);
//return;
}
}
}
}
}
}
// a non-car object sliding along the track
else if (contactInfo.ActorB.Group == PhysXConsts.NonCarId && contactInfo.ActorA.Group == PhysXConsts.TrackId)
{
if (contactInfo.ActorB.LinearVelocity.Length() > 4)
{
while (iter.GoToNextPair())
{
while (iter.GoToNextPatch())
{
while (iter.GoToNextPoint())
{
Vector3 pos = iter.GetPoint();
GameVars.SparksEmitter.Update(pos);
}
}
}
}
}
}
}
private void HandleNonCarCollision(Vehicle vehicle, NonCar nonCar, Vector3 pos, Vector3 patchnormal, Vector3 normalforce, ContactPairFlag events)
{
if (nonCar.LastTouchTime + 0.1f > Engine.TotalSeconds)
{
nonCar.LastTouchTime = Engine.TotalSeconds;
return;
}
nonCar.LastVehicleToHit = vehicle;
if (nonCar.IsAttached)
{
if (normalforce == Vector3.Zero) return;
nonCar.Hit = true;
float speed = vehicle.Chassis.LastSpeeds.GetMax();
if (speed < 20) return;
normalforce = Vector3.Normalize(normalforce);
Vector3 directedForce = normalforce * speed * vehicle.Config.Mass;
float factor = (1 / (nonCar.Config.TorqueRequiredToMove * nonCar.Config.MassWhenAttached)) * 0.005f;
nonCar.Rotation.X += -directedForce.X * factor;
nonCar.Rotation.Z += directedForce.Z * factor;
nonCar.LastTouchTime = Engine.TotalSeconds;
nonCar.LastForcePosition = pos;
nonCar.LastForce = directedForce;
//multiply force to match the force generated by hitting a solid wall/barrier etc
vehicle.OnCollision(directedForce.Length() * 15, pos, normalforce, true);
}
else
{
vehicle.OnCollision(normalforce.Length(), pos, normalforce, false);
}
nonCar.LastTouchTime = Engine.TotalSeconds;
}
public abstract void SetShapePairFlags(ActorShape shape1, ActorShape shape2, ContactPairFlag flags);
public abstract void SetActorPairFlags(Actor actor1, Actor actor2, ContactPairFlag flags);
public abstract void SetActorGroupPairFlags(ushort g1, ushort g2, ContactPairFlag flags);
