void UDestructibleComponent::SetCollisionResponseForActor(const FCollisionResponse& ColResponse, PxRigidDynamic* Actor, int32 ChunkIdx)
{
// Get collision channel and response
PxFilterData PQueryFilterData, PSimFilterData;
uint8 MoveChannel = GetCollisionObjectType();
if(IsCollisionEnabled())
{
AActor* Owner = GetOwner();
CreateShapeFilterData(MoveChannel, (Owner ? Owner->GetUniqueID() : 0), ColResponse.GetResponseContainer(), 0, ChunkIdxToBoneIdx(ChunkIdx), PQueryFilterData, PSimFilterData, BodyInstance.bUseCCD, BodyInstance.bNotifyRigidBodyCollision, false);
PQueryFilterData.word3 |= EPDF_SimpleCollision | EPDF_ComplexCollision;
SCOPED_SCENE_WRITE_LOCK(Actor->getScene());
TArray<PxShape*> Shapes;
Shapes.AddUninitialized(Actor->getNbShapes());
int ShapeCount = Actor->getShapes(Shapes.GetTypedData(), Shapes.Num());
for (int32 i=0; i < ShapeCount; ++i)
{
PxShape* Shape = Shapes[i];
Shape->setQueryFilterData(PQueryFilterData);
Shape->setSimulationFilterData(PSimFilterData);
Shape->setFlag(PxShapeFlag::eSCENE_QUERY_SHAPE, true);
Shape->setFlag(PxShapeFlag::eSIMULATION_SHAPE, true);
Shape->setFlag(PxShapeFlag::eVISUALIZATION, true);
}
}
}
void UDestructibleComponent::SetCollisionResponseForActor(PxRigidDynamic* Actor, int32 ChunkIdx, const FCollisionResponseContainer* ResponseOverride /*= NULL*/)
{
#if WITH_APEX
if (ApexDestructibleActor == NULL)
{
return;
}
// Get collision channel and response
PxFilterData PQueryFilterData, PSimFilterData;
uint8 MoveChannel = GetCollisionObjectType();
if(IsCollisionEnabled())
{
UDestructibleMesh* TheDestructibleMesh = GetDestructibleMesh();
AActor* Owner = GetOwner();
bool bLargeChunk = IsChunkLarge(ChunkIdx);
const FCollisionResponseContainer& UseResponse = ResponseOverride == NULL ? (bLargeChunk ? LargeChunkCollisionResponse.GetResponseContainer() : SmallChunkCollisionResponse.GetResponseContainer()) : *ResponseOverride;
physx::PxU32 SupportDepth = TheDestructibleMesh->ApexDestructibleAsset->getChunkDepth(ChunkIdx);
const bool bEnableImpactDamage = IsImpactDamageEnabled(TheDestructibleMesh, SupportDepth);
CreateShapeFilterData(MoveChannel, GetUniqueID(), UseResponse, 0, ChunkIdxToBoneIdx(ChunkIdx), PQueryFilterData, PSimFilterData, BodyInstance.bUseCCD, bEnableImpactDamage, false);
PQueryFilterData.word3 |= EPDF_SimpleCollision | EPDF_ComplexCollision;
SCOPED_SCENE_WRITE_LOCK(Actor->getScene());
TArray<PxShape*> Shapes;
Shapes.AddUninitialized(Actor->getNbShapes());
int ShapeCount = Actor->getShapes(Shapes.GetData(), Shapes.Num());
for (int32 i=0; i < ShapeCount; ++i)
{
PxShape* Shape = Shapes[i];
Shape->setQueryFilterData(PQueryFilterData);
Shape->setSimulationFilterData(PSimFilterData);
Shape->setFlag(PxShapeFlag::eSCENE_QUERY_SHAPE, true);
Shape->setFlag(PxShapeFlag::eSIMULATION_SHAPE, true);
Shape->setFlag(PxShapeFlag::eVISUALIZATION, true);
}
}
#endif
}
void UDestructibleComponent::SetCollisionResponseForShape(PxShape* Shape, int32 ChunkIdx)
{
// Get collision channel and response
PxFilterData PQueryFilterData, PSimFilterData;
uint8 MoveChannel = GetCollisionObjectType();
if (IsCollisionEnabled())
{
AActor* Owner = GetOwner();
bool bLargeChunk = IsChunkLarge(ChunkIdx);
const FCollisionResponse& ColResponse = bLargeChunk ? LargeChunkCollisionResponse : SmallChunkCollisionResponse;
//TODO: we currently assume chunks will not have impact damage as it's very expensive. Should look into exposing this a bit more
CreateShapeFilterData(MoveChannel, (Owner ? Owner->GetUniqueID() : 0), ColResponse.GetResponseContainer(), 0, ChunkIdxToBoneIdx(ChunkIdx), PQueryFilterData, PSimFilterData, BodyInstance.bUseCCD, false, false);
PQueryFilterData.word3 |= EPDF_SimpleCollision | EPDF_ComplexCollision;
SCOPED_SCENE_WRITE_LOCK(Shape->getActor()->getScene());
Shape->setQueryFilterData(PQueryFilterData);
Shape->setSimulationFilterData(PSimFilterData);
Shape->setFlag(PxShapeFlag::eSCENE_QUERY_SHAPE, true);
Shape->setFlag(PxShapeFlag::eSIMULATION_SHAPE, true);
Shape->setFlag(PxShapeFlag::eVISUALIZATION, true);
}
}
void UDestructibleComponent::CreatePhysicsState()
{
// to avoid calling PrimitiveComponent, I'm just calling ActorComponent::CreatePhysicsState
// @todo lh - fix me based on the discussion with Bryan G
UActorComponent::CreatePhysicsState();
bPhysicsStateCreated = true;
// What we want to do with BodySetup is simply use it to store a PhysicalMaterial, and possibly some other relevant fields. Set up pointers from the BodyInstance to the BodySetup and this component
UBodySetup* BodySetup = GetBodySetup();
BodyInstance.OwnerComponent = this;
BodyInstance.BodySetup = BodySetup;
BodyInstance.InstanceBodyIndex = 0;
#if WITH_APEX
if( SkeletalMesh == NULL )
{
return;
}
FPhysScene* PhysScene = World->GetPhysicsScene();
check(PhysScene);
if( GApexModuleDestructible == NULL )
{
UE_LOG(LogPhysics, Log, TEXT("UDestructibleComponent::CreatePhysicsState(): APEX must be enabled to init UDestructibleComponent physics.") );
return;
}
if( ApexDestructibleActor != NULL )
{
UE_LOG(LogPhysics, Log, TEXT("UDestructibleComponent::CreatePhysicsState(): NxDestructibleActor already created.") );
return;
}
UDestructibleMesh* TheDestructibleMesh = GetDestructibleMesh();
if( TheDestructibleMesh == NULL || TheDestructibleMesh->ApexDestructibleAsset == NULL)
{
UE_LOG(LogPhysics, Log, TEXT("UDestructibleComponent::CreatePhysicsState(): No DestructibleMesh or missing ApexDestructibleAsset.") );
return;
}
int32 ChunkCount = TheDestructibleMesh->ApexDestructibleAsset->getChunkCount();
// Ensure the chunks start off invisible. RefreshBoneTransforms should make them visible.
for (int32 ChunkIndex = 0; ChunkIndex < ChunkCount; ++ChunkIndex)
{
SetChunkVisible(ChunkIndex, false);
}
#if WITH_EDITOR
if (GIsEditor && !World->IsGameWorld())
{
// In the editor, only set the 0 chunk to be visible.
if (TheDestructibleMesh->ApexDestructibleAsset->getChunkCount() > 0)
{
SetChunkVisible(0, true);
}
return;
}
#endif // WITH_EDITOR
// Only create physics in the game
if( !World->IsGameWorld() )
{
return;
}
// Set template actor/body/shape properties
// Find the PhysicalMaterial we need to apply to the physics bodies.
UPhysicalMaterial* PhysMat = BodyInstance.GetSimplePhysicalMaterial();
// Get the default actor descriptor NxParameterized data from the asset
NxParameterized::Interface* ActorParams = TheDestructibleMesh->GetDestructibleActorDesc(PhysMat);
// Create PhysX transforms from ComponentToWorld
const PxMat44 GlobalPose(PxMat33(U2PQuat(ComponentToWorld.GetRotation())), U2PVector(ComponentToWorld.GetTranslation()));
const PxVec3 Scale = U2PVector(ComponentToWorld.GetScale3D());
// Set the transform in the actor descriptor
verify( NxParameterized::setParamMat44(*ActorParams,"globalPose",GlobalPose) );
verify( NxParameterized::setParamVec3(*ActorParams,"scale",Scale) );
// Set the (initially) dynamic flag in the actor descriptor
// See if we are 'static'
verify( NxParameterized::setParamBool(*ActorParams,"dynamic", BodyInstance.bSimulatePhysics != false) );
// Set the sleep velocity frame decay constant (was sleepVelocitySmoothingFactor) - a new feature that should help sleeping in large piles
verify( NxParameterized::setParamF32(*ActorParams,"sleepVelocityFrameDecayConstant", 20.0f) );
// Set up the shape desc template
// Get collision channel and response
PxFilterData PQueryFilterData, PSimFilterData;
uint8 MoveChannel = GetCollisionObjectType();
FCollisionResponseContainer CollResponse;
if(IsCollisionEnabled())
{
// Only enable a collision response if collision is enabled
CollResponse = GetCollisionResponseToChannels();
LargeChunkCollisionResponse.SetCollisionResponseContainer(CollResponse);
SmallChunkCollisionResponse.SetCollisionResponseContainer(CollResponse);
SmallChunkCollisionResponse.SetResponse(ECC_Pawn, ECR_Overlap);
}
else
{
// now since by default it will all block, if collision is disabled, we need to set to ignore
MoveChannel = ECC_WorldStatic;
CollResponse.SetAllChannels(ECR_Ignore);
LargeChunkCollisionResponse.SetAllChannels(ECR_Ignore);
SmallChunkCollisionResponse.SetAllChannels(ECR_Ignore);
}
const bool bEnableImpactDamage = IsImpactDamageEnabled(TheDestructibleMesh, 0);
const bool bEnableContactModification = TheDestructibleMesh->DefaultDestructibleParameters.DamageParameters.bCustomImpactResistance && TheDestructibleMesh->DefaultDestructibleParameters.DamageParameters.ImpactResistance > 0.f;
// Passing AssetInstanceID = 0 so we'll have self-collision
AActor* Owner = GetOwner();
CreateShapeFilterData(MoveChannel, GetUniqueID(), CollResponse, 0, 0, PQueryFilterData, PSimFilterData, BodyInstance.bUseCCD, bEnableImpactDamage, false, bEnableContactModification);
// Build filterData variations for complex and simple
PSimFilterData.word3 |= EPDF_SimpleCollision | EPDF_ComplexCollision;
PQueryFilterData.word3 |= EPDF_SimpleCollision | EPDF_ComplexCollision;
// Set the filterData in the shape descriptor
verify( NxParameterized::setParamU32(*ActorParams,"p3ShapeDescTemplate.simulationFilterData.word0", PSimFilterData.word0 ) );
verify( NxParameterized::setParamU32(*ActorParams,"p3ShapeDescTemplate.simulationFilterData.word1", PSimFilterData.word1 ) );
verify( NxParameterized::setParamU32(*ActorParams,"p3ShapeDescTemplate.simulationFilterData.word2", PSimFilterData.word2 ) );
verify( NxParameterized::setParamU32(*ActorParams,"p3ShapeDescTemplate.simulationFilterData.word3", PSimFilterData.word3 ) );
verify( NxParameterized::setParamU32(*ActorParams,"p3ShapeDescTemplate.queryFilterData.word0", PQueryFilterData.word0 ) );
verify( NxParameterized::setParamU32(*ActorParams,"p3ShapeDescTemplate.queryFilterData.word1", PQueryFilterData.word1 ) );
verify( NxParameterized::setParamU32(*ActorParams,"p3ShapeDescTemplate.queryFilterData.word2", PQueryFilterData.word2 ) );
verify( NxParameterized::setParamU32(*ActorParams,"p3ShapeDescTemplate.queryFilterData.word3", PQueryFilterData.word3 ) );
// Set the PhysX material in the shape descriptor
PxMaterial* PMaterial = PhysMat->GetPhysXMaterial();
verify( NxParameterized::setParamU64(*ActorParams,"p3ShapeDescTemplate.material", (physx::PxU64)PMaterial) );
// Set the rest depth to match the skin width in the shape descriptor
const physx::PxCookingParams& CookingParams = GApexSDK->getCookingInterface()->getParams();
verify( NxParameterized::setParamF32(*ActorParams,"p3ShapeDescTemplate.restOffset", -CookingParams.skinWidth) );
// Set the PhysX material in the actor descriptor
verify( NxParameterized::setParamBool(*ActorParams,"p3ActorDescTemplate.flags.eDISABLE_GRAVITY",false) );
verify( NxParameterized::setParamBool(*ActorParams,"p3ActorDescTemplate.flags.eVISUALIZATION",true) );
// Set the PxActor's and PxShape's userData fields to this component's body instance
verify( NxParameterized::setParamU64(*ActorParams,"p3ActorDescTemplate.userData", 0 ) );
// All shapes created by this DestructibleActor will have the userdata of the owning component.
// We need this, as in some cases APEX is moving shapes accross actors ( ex. FormExtended structures )
verify( NxParameterized::setParamU64(*ActorParams,"p3ShapeDescTemplate.userData", (PxU64)&PhysxUserData ) );
// Set up the body desc template in the actor descriptor
verify( NxParameterized::setParamF32(*ActorParams,"p3BodyDescTemplate.angularDamping", BodyInstance.AngularDamping ) );
verify( NxParameterized::setParamF32(*ActorParams,"p3BodyDescTemplate.linearDamping", BodyInstance.LinearDamping ) );
const PxTolerancesScale& PScale = GPhysXSDK->getTolerancesScale();
PxF32 SleepEnergyThreshold = 0.00005f*PScale.speed*PScale.speed; // 1/1000 Default, since the speed scale is quite high
if (BodyInstance.SleepFamily == ESleepFamily::Sensitive)
{
SleepEnergyThreshold /= 20.0f;
}
verify( NxParameterized::setParamF32(*ActorParams,"p3BodyDescTemplate.sleepThreshold", SleepEnergyThreshold) );
// NxParameterized::setParamF32(*ActorParams,"bodyDescTemplate.sleepDamping", SleepDamping );
verify( NxParameterized::setParamF32(*ActorParams,"p3BodyDescTemplate.density", 0.001f*PhysMat->Density) ); // Convert from g/cm^3 to kg/cm^3
// Enable CCD if requested
verify( NxParameterized::setParamBool(*ActorParams,"p3BodyDescTemplate.flags.eENABLE_CCD", BodyInstance.bUseCCD != 0) );
// Ask the actor to create chunk events, for more efficient visibility updates
verify( NxParameterized::setParamBool(*ActorParams,"createChunkEvents", true) );
// Enable hard sleeping if requested
verify( NxParameterized::setParamBool(*ActorParams,"useHardSleeping", bEnableHardSleeping) );
// Destructibles are always dynamic or kinematic, and therefore only go into one of the scenes
const uint32 SceneType = BodyInstance.UseAsyncScene(PhysScene) ? PST_Async : PST_Sync;
NxApexScene* ApexScene = PhysScene->GetApexScene(SceneType);
PxScene* PScene = PhysScene->GetPhysXScene(SceneType);
BodyInstance.SceneIndexSync = SceneType == PST_Sync ? PhysScene->PhysXSceneIndex[PST_Sync] : 0;
BodyInstance.SceneIndexAsync = SceneType == PST_Async ? PhysScene->PhysXSceneIndex[PST_Async] : 0;
check(ApexScene);
ChunkInfos.Reset(ChunkCount);
ChunkInfos.AddZeroed(ChunkCount);
PhysxChunkUserData.Reset(ChunkCount);
PhysxChunkUserData.AddZeroed(ChunkCount);
// Create an APEX NxDestructibleActor from the Destructible asset and actor descriptor
ApexDestructibleActor = static_cast<NxDestructibleActor*>(TheDestructibleMesh->ApexDestructibleAsset->createApexActor(*ActorParams, *ApexScene));
check(ApexDestructibleActor);
// Make a backpointer to this component
PhysxUserData = FPhysxUserData(this);
ApexDestructibleActor->userData = &PhysxUserData;
// Cache cooked collision data
// BRGTODO : cook in asset
ApexDestructibleActor->cacheModuleData();
// BRGTODO : Per-actor LOD setting
// ApexDestructibleActor->forcePhysicalLod( DestructibleActor->LOD );
// Start asleep if requested
PxRigidDynamic* PRootActor = ApexDestructibleActor->getChunkPhysXActor(0);
// Put to sleep or wake up only if the component is physics-simulated
if (PRootActor != NULL && BodyInstance.bSimulatePhysics)
{
SCOPED_SCENE_WRITE_LOCK(PScene); //Question, since apex is defer adding actors do we need to lock? Locking the async scene is expensive!
PRootActor->setActorFlag(PxActorFlag::eDISABLE_GRAVITY, !BodyInstance.bEnableGravity);
// Sleep/wake up as appropriate
if (!BodyInstance.bStartAwake)
{
ApexDestructibleActor->setChunkPhysXActorAwakeState(0, false);
}
}
UpdateBounds();
#endif // #if WITH_APEX
}