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  3. FBodyInstance

FBodyInstance

Container for a physics representation of an object

API > API/Runtime > API/Runtime/Engine

Container for a physics representation of an object

   
Name FBodyInstance
Type struct
Header File /Engine/Source/Runtime/Engine/Classes/PhysicsEngine/BodyInstance.h
Include Path #include "PhysicsEngine/BodyInstance.h"

Syntax

USTRUCT (BlueprintType )  
struct FBodyInstance : public FBodyInstanceCore

Inheritance Hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers

FBodyInstance()

 Constructor PhysicsEngine/BodyInstance.h  

Destructors

Name Remarks Include Path Unreal Specifiers

~FBodyInstance()

   PhysicsEngine/BodyInstance.h  

Structs

Name Remarks
FAsyncTermBodyPayload Contains the payload necessary for FBodyInstance::AsyncTermBody to release the body's resources asynchronously (outside of game thread).
FBodyInstanceDelegates Struct of body instance delegates that are rarely bound so that we can only allocate memory if one is actually being used.
FBodyInstanceDelegatesPtr Specialization of TUniquePtr for storing body instance delegates as there is a need to copy the contents of the delegate structure.
FWeldInfo  

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
ActorHandle FPhysicsActorHandle TODO_CHAOSAPI: Deprecate public ActorHandle Internal physics representation of our body instance PhysicsEngine/BodyInstance.h  
AngularDamping float 'Drag' force added to reduce angular movement PhysicsEngine/BodyInstance.h
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bContactModification uint8 Enable contact modification. PhysicsEngine/BodyInstance.h  
bHACK_DisableCollisionResponse uint8 @HACK: These are ONLY used when the 'p.EnableDynamicPerBodyFilterHacks' CVar is set (disabled by default). PhysicsEngine/BodyInstance.h  
bHACK_DisableSkelComponentFilterOverriding uint8 By default, an owning skel mesh component will override the body's collision filter. PhysicsEngine/BodyInstance.h  
bIgnoreAnalyticCollisions uint8 If true ignore analytic collisions and treat objects as a general implicit surface PhysicsEngine/BodyInstance.h
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bLockRotation uint8 When a Locked Axis Mode is selected, will lock rotation to the specified axis PhysicsEngine/BodyInstance.h
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  • Meta=(DisplayName="Lock Axis Rotation")
bLockTranslation uint8 When a Locked Axis Mode is selected, will lock translation on the specified axis PhysicsEngine/BodyInstance.h
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  • Meta=(DisplayName="Lock Axis Translation")
bLockXRotation uint8 Lock rotation about the X-axis PhysicsEngine/BodyInstance.h
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  • Meta=(DisplayName="X")
bLockXTranslation uint8 Lock translation along the X-axis PhysicsEngine/BodyInstance.h
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bLockYRotation uint8 Lock rotation about the Y-axis PhysicsEngine/BodyInstance.h
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  • Meta=(DisplayName="Y")
bLockYTranslation uint8 Lock translation along the Y-axis PhysicsEngine/BodyInstance.h
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bLockZRotation uint8 Lock rotation about the Z-axis PhysicsEngine/BodyInstance.h
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bLockZTranslation uint8 Lock translation along the Z-axis PhysicsEngine/BodyInstance.h
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bNotifyRigidBodyCollision uint8 Should 'Hit' events fire when this object collides during physics simulation. PhysicsEngine/BodyInstance.h
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  • Meta=(DisplayName="Simulation Generates Hit Events")
BodyInstanceOwner IPhysicsBodyInstanceOwner * Owner containing this body (when not a UPrimitiveComponent). PhysicsEngine/BodyInstance.h  
bOverrideMaxAngularVelocity uint8 Override the default max angular velocity PhysicsEngine/BodyInstance.h
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bOverrideSolverAsyncDeltaTime uint8 Set the desired delta time for the body. PhysicsEngine/BodyInstance.h
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bSmoothEdgeCollisions uint8 Remove unnecessary edge collisions to allow smooth sliding over surfaces composed of multiple actors/components. PhysicsEngine/BodyInstance.h
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bUseCCD uint8 If true Continuous Collision Detection (CCD) will be used for this component PhysicsEngine/BodyInstance.h
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COMNudge FVector User specified offset for this object's Center of Mass. PhysicsEngine/BodyInstance.h
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  • Meta=(DisplayName="Center Of Mass Offset")
CurrentSceneState BodyInstanceSceneState Current state of the physics body for tracking deferred addition and removal. PhysicsEngine/BodyInstance.h  
CustomDOFPlaneNormal FVector Locks physical movement along a custom plane for a given normal. PhysicsEngine/BodyInstance.h
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  • Meta=(DisplayName="Plane Normal")
CustomSleepThresholdMultiplier float If the SleepFamily is set to custom, multiply the natural sleep threshold by this amount. PhysicsEngine/BodyInstance.h
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DOFConstraint FConstraintInstance * Constraint used to allow for easy DOF setup per bodyinstance PhysicsEngine/BodyInstance.h  
DOFMode TEnumAsByte< EDOFMode::Type > Locks physical movement along specified axis. PhysicsEngine/BodyInstance.h
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GravityGroupIndex uint8 What gravity group the BI should use, which determines rate of acceleration PhysicsEngine/BodyInstance.h
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  • Meta=(ClampMin="0", UIMin="0", UIMax="7")
InertiaTensorScale FVector Per-instance scaling of inertia (bigger number means it'll be harder to rotate) PhysicsEngine/BodyInstance.h
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InstanceBodyIndex int32 Index of this BodyInstance within the SkeletalMeshComponent/PhysicsAsset. PhysicsEngine/BodyInstance.h  
InstanceBoneIndex int16 When we are a body within a SkeletalMeshComponent, we cache the index of the bone we represent, to speed up sync'ing physics to anim. PhysicsEngine/BodyInstance.h  
LinearDamping float 'Drag' force added to reduce linear movement PhysicsEngine/BodyInstance.h
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MassScale float Per-instance scaling of mass PhysicsEngine/BodyInstance.h
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MaxAngularVelocity float The maximum angular velocity for this instance [degrees/s] PhysicsEngine/BodyInstance.h
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OwnerComponent TWeakObjectPtr< class UPrimitiveComponent > PrimitiveComponent containing this body, if relevant. PhysicsEngine/BodyInstance.h  
PhysicsBlendWeight float Influence of rigid body physics (blending) on the mesh's pose (0.0 == use only animation, 1.0 == use only physics) Provide appropriate interface for doing this instead of allowing BlueprintReadWrite PhysicsEngine/BodyInstance.h  
PhysicsUserData FPhysicsUserData #PHYS2 Rename, not just for physx now. PhysicsEngine/BodyInstance.h  
PositionSolverIterationCount uint8 Override the project-settings position iteration count for this body (if bOverrideIterationCounts is set). PhysicsEngine/BodyInstance.h
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ProjectionSolverIterationCount uint8 Override the project-settings projection iteration count for this body (if bOverrideIterationCounts is set). PhysicsEngine/BodyInstance.h
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Scale3D FVector Current scale of physics - used to know when and how physics must be rescaled to match current transform of OwnerComponent. PhysicsEngine/BodyInstance.h  
SleepFamily ESleepFamily The set of values used in considering when put this body to sleep. PhysicsEngine/BodyInstance.h
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SolverAsyncDeltaTime float Override value for physics solver async delta time. PhysicsEngine/BodyInstance.h
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SourceObject TWeakObjectPtr< UObject > Source object for this body. PhysicsEngine/BodyInstance.h  
StabilizationThresholdMultiplier float Stabilization factor for this body if Physics stabilization is enabled. PhysicsEngine/BodyInstance.h
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VelocitySolverIterationCount uint8 Override the project-settings velocity iteration count for this body (if bOverrideIterationCounts is set). PhysicsEngine/BodyInstance.h
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WeldParent FBodyInstance * The parent body that we are welded to PhysicsEngine/BodyInstance.h  

Protected

Name Type Remarks Include Path Unreal Specifiers
bAllowPartialIslandSleep uint8 [EXPERIMENTAL] If true Partial Island Sleeping is permitted for the entire island this body is in PhysicsEngine/BodyInstance.h
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BodyInstanceDelegates FBodyInstanceDelegatesPtr Pointer to lazily created container for the body instance delegates. PhysicsEngine/BodyInstance.h  
bShapeCollisionEnabledIsSet uint8   PhysicsEngine/BodyInstance.h  
bShapeCollisionResponsesIsSet uint8   PhysicsEngine/BodyInstance.h  
bUseMACD uint8 [EXPERIMENTAL] If true Motion-Aware Collision Detection (MACD) will be used for this component PhysicsEngine/BodyInstance.h
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CollisionEnabled TEnumAsByte< ECollisionEnabled::Type > Type of collision enabled. PhysicsEngine/BodyInstance.h
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CollisionProfileName FName Collision Profile Name PhysicsEngine/BodyInstance.h
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CollisionResponses FCollisionResponse Custom Channels for Responses PhysicsEngine/BodyInstance.h
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MaskFilter FMaskFilter Extra mask for filtering. Look at declaration for logic PhysicsEngine/BodyInstance.h  
ObjectType TEnumAsByte< enum ECollisionChannel > Enum indicating what type of object this should be considered as when it moves PhysicsEngine/BodyInstance.h
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ShapeCollisionEnabled TArray< TEnumAsByte< ECollisionEnabled::Type > > When per-shape collision is changed at runtime, state is stored in an optional array of per-shape collision state. PhysicsEngine/BodyInstance.h  
ShapeCollisionResponses TArray< TPair< int32, FCollisionResponse > > When per-shape collision responses are changed at runtime, state is stored in an optional array of per-shape collision response settings. PhysicsEngine/BodyInstance.h  
ShapeToBodiesMap TSharedPtr< TMap< FPhysicsShapeHandle, FWeldInfo > > Used to map between shapes and welded bodies. PhysicsEngine/BodyInstance.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void AddAngularImpulseInRadians ( const FVector& Impulse,
bool bVelChange,
const FAsyncPhysicsTimestamp TimeStamp,
APlayerController* PlayerController
)

 Add a rotational impulse to this body PhysicsEngine/BodyInstance.h  

void AddCustomPhysics ( FCalculateCustomPhysics& CalculateCustomPhysics
)

 Add custom forces and torques on the body. PhysicsEngine/BodyInstance.h  

void AddForce ( const FVector& Force,
bool bAllowSubstepping,
bool bAccelChange,
const FAsyncPhysicsTimestamp TimeStamp,
APlayerController* PlayerController
)

 Add a force to this body PhysicsEngine/BodyInstance.h  

void AddForceAtPosition ( const FVector& Force,
const FVector& Position,
bool bAllowSubstepping,
bool bIsLocalForce,
const FAsyncPhysicsTimestamp TimeStamp,
APlayerController* PlayerController
)

 Add a force at a particular position (world space when bIsLocalForce = false, body space otherwise) PhysicsEngine/BodyInstance.h  

void AddImpulse ( const FVector& Impulse,
bool bVelChange,
const FAsyncPhysicsTimestamp TimeStamp,
APlayerController* PlayerController
)

 Add an impulse to this body PhysicsEngine/BodyInstance.h  

void AddImpulseAtPosition ( const FVector& Impulse,
const FVector& Position,
const FAsyncPhysicsTimestamp TimeStamp,
APlayerController* PlayerController
)

 Add an impulse to this body and a particular world position PhysicsEngine/BodyInstance.h  

void AddRadialForceToBody ( const FVector& Origin,
float Radius,
float Strength,
uint8 Falloff,
bool bAccelChange,
bool bAllowSubstepping
)

 Add a force to this bodyinstance, originating from the supplied world-space location. PhysicsEngine/BodyInstance.h  

void AddRadialImpulseToBody ( const FVector& Origin,
float Radius,
float Strength,
uint8 Falloff,
bool bVelChange
)

 Add an impulse to this bodyinstance, radiating out from the specified position. PhysicsEngine/BodyInstance.h  

void AddTorqueInRadians ( const FVector& Torque,
bool bAllowSubstepping,
bool bAccelChange,
const FAsyncPhysicsTimestamp TimeStamp,
APlayerController* PlayerController
)

 Add a torque to this body PhysicsEngine/BodyInstance.h  

void AddVelocityChangeImpulseAtLocation ( const FVector& Impulse,
const FVector& Position,
const FAsyncPhysicsTimestamp TimeStamp,
APlayerController* PlayerController
)

 Add a velocity change impulse to this body and a particular world position PhysicsEngine/BodyInstance.h  

void ApplyAsyncPhysicsCommand ( FAsyncPhysicsTimestamp TimeStamp,
const bool bIsInternal,
APlayerController* PlayerController,
const TFunction< void()>& Command
)

 Apply async physics command onto the body instance PhysicsEngine/BodyInstance.h  

void ApplyDeferredCollisionProfileName()

 Applies a deferred collision profile PhysicsEngine/BodyInstance.h  

void ApplyMaterialToInstanceShapes_AssumesLocked ( UPhysicalMaterial* SimplePhysMat,
TArray< UPhysicalMaterial* >& ComplexPhysMats,
const TArrayView< FPhysicalMaterialMaskParams >& ComplexPhysMatMasks
)

 Note: This function is not thread safe. PhysicsEngine/BodyInstance.h  

void ApplySerializedState ( Chaos::FSerializedDataBufferPtr&& InSerializedState,
Chaos::ESerializedDataContext DataContext
)

 Deserializes the provided array of bytes representing a saved physics thread state and applies it to this body PhysicsEngine/BodyInstance.h  

void ApplyWeldOnChildren()

 Finds all children that are technically welded to us (for example kinematics are welded but not as far as physx is concerned) and apply the actual physics engine weld on them PhysicsEngine/BodyInstance.h  

void BuildBodyFilterData ( FBodyCollisionFilterData& OutFilterData,
const int32 ShapeIndex
) const

 Build the sim and query filter data (for simple and complex shapes) based on the settings of this BodyInstance (and its associated BodySetup) PhysicsEngine/BodyInstance.h  

void ClearExternalCollisionProfile()

   PhysicsEngine/BodyInstance.h  

void ClearForces ( bool bAllowSubstepping
)

 Clear accumulated forces on this body PhysicsEngine/BodyInstance.h  

void ClearTorques ( bool bAllowSubstepping
)

 Clear accumulated torques on this body PhysicsEngine/BodyInstance.h  

void CopyBodyInstancePropertiesFrom ( const FBodyInstance* FromInst
)

 Utility for copying properties from one BodyInstance to another. PhysicsEngine/BodyInstance.h  

void CopyRuntimeBodyInstancePropertiesFrom ( const FBodyInstance* FromInst
)

 Utility for copying only the runtime instanced properties from one BodyInstance to another. PhysicsEngine/BodyInstance.h  

void CreateDOFLock()

   PhysicsEngine/BodyInstance.h  

bool DoesUseCollisionProfile()

 Return true if it uses Collision Profile System. False otherwise PhysicsEngine/BodyInstance.h  

void DrawCOMPosition ( FPrimitiveDrawInterface* PDI,
float COMRenderSize,
const FColor& COMRenderColor
)

 Draws the center of mass as a wire star PhysicsEngine/BodyInstance.h  

void ExecuteOnCalculateCustomProjection ( FTransform& WorldTM
) const

 Executes the OnCalculateCustomProjection delegate if bound. PhysicsEngine/BodyInstance.h  

void FixupData ( UObject* Loader
)

 UObject notification by OwningComponent PhysicsEngine/BodyInstance.h  

const FPhysicsActorHandle & GetActorReferenceWithWelding()

   PhysicsEngine/BodyInstance.h  

bool GetAllowPartialIslandSleep()

 [EXPERIMENTAL] Whether Partial Island Sleep is permitted for the island this body is in PhysicsEngine/BodyInstance.h  

int32 GetAllShapes_AssumesLocked ( TArray< FPhysicsShapeHandle >& OutShapes
) const

 Utility to get all the shapes from a FBodyInstance NOTE: This function is not thread safe. PhysicsEngine/BodyInstance.h  

FBox GetBodyBounds()

 Return bounds of physics representation in world space PhysicsEngine/BodyInstance.h  

FBox GetBodyBoundsLocal()

 Return bounds of physics representation in world space PhysicsEngine/BodyInstance.h  

FString GetBodyDebugName()

 Get the name for this body, for use in debugging PhysicsEngine/BodyInstance.h  

FVector GetBodyInertiaTensor()

 Return the body's inertia tensor. This is returned in local mass space PhysicsEngine/BodyInstance.h  

FBodyInstanceAsyncPhysicsTickHandle GetBodyInstanceAsyncPhysicsTickHandle()

   PhysicsEngine/BodyInstance.h  

void GetBodyInstanceResourceSizeEx ( FResourceSizeEx& CumulativeResourceSize
) const

 Returns memory used by resources allocated for this body instance ( ex. physics resources ) PhysicsEngine/BodyInstance.h  

float GetBodyMass()

 Returns the body's mass PhysicsEngine/BodyInstance.h  

UBodySetup * GetBodySetup()

   PhysicsEngine/BodyInstance.h  

ECollisionEnabled::Type GetCollisionEnabled ( bool bCheckOwner
) const

 Get the current type of collision enabled PhysicsEngine/BodyInstance.h  

FName GetCollisionProfileName()

 Returns the collision profile name that will be used. PhysicsEngine/BodyInstance.h  

const FCollisionResponse & GetCollisionResponse()

   PhysicsEngine/BodyInstance.h  

void GetComplexPhysicalMaterials ( TArray< UPhysicalMaterial* >& OutPhysMaterials
) const

 Get the complex PhysicalMaterials for this body PhysicsEngine/BodyInstance.h  

void GetComplexPhysicalMaterials ( TArray< UPhysicalMaterial* >& OutPhysMaterials,
TArray< FPhysicalMaterialMaskParams >& OutPhysMaterialMasks
) const

 Get the complex PhysicalMaterials and PhysicalMaterialMasks for this body PhysicsEngine/BodyInstance.h  
Get the complex PhysicalMaterials and PhysicalMaterialMasks array for this body PhysicsEngine/BodyInstance.h  
Get the complex PhysicalMaterials array for this body PhysicsEngine/BodyInstance.h  

FVector GetCOMPosition()

 Returns the center of mass of this body (in world space) PhysicsEngine/BodyInstance.h  

const TMap< FPhysicsShapeHandle, FWeldInfo > * GetCurrentWeldInfo()

   PhysicsEngine/BodyInstance.h  

float GetDistanceToBody ( const FVector& Point,
FVector& OutPointOnBody
) const

 Get the square of the distance to the body surface if available It is only valid if BodyShape is convex If point is inside or shape is not convex, it will return 0.f PhysicsEngine/BodyInstance.h  

FTransform GetKinematicTarget ()

 Get the kinematic target transform in world space from physics body. PhysicsEngine/BodyInstance.h  
Get the kinematic target transform in world space from physics body. PhysicsEngine/BodyInstance.h  

FVector GetLockedAxis()

   PhysicsEngine/BodyInstance.h  

FMaskFilter GetMaskFilter()

 Return the ignore mask filter. PhysicsEngine/BodyInstance.h  

float GetMassOverride()

 Returns the mass override. See MassInKgOverride for documentation PhysicsEngine/BodyInstance.h  

FTransform GetMassSpaceLocal()

 Returns the mass coordinate system to local space transform (position is local center of mass, rotation should be identity) PhysicsEngine/BodyInstance.h  

FTransform GetMassSpaceToWorldSpace()

 Returns the mass coordinate system to world space transform (position is world center of mass, rotation is world inertia orientation) PhysicsEngine/BodyInstance.h  

float GetMaxAngularVelocityInRadians()

 Get the maximum angular velocity of this body PhysicsEngine/BodyInstance.h  
The maximum velocity at which initally-overlapping bodies will separate. PhysicsEngine/BodyInstance.h  

ECollisionChannel GetObjectType()

 Get the movement channel of this body PhysicsEngine/BodyInstance.h  

const FBodyInstance * GetOriginalBodyInstance ( const FPhysicsShapeHandle& InShape
) const

 Returns the original owning body instance. This is needed for welding PhysicsEngine/BodyInstance.h  

bool GetOverrideMaxDepenetrationVelocity()

 Are we overriding the MaxDepenetrationVelocity. See SetMaxDepenetrationVelocity PhysicsEngine/BodyInstance.h  

bool GetOverrideWalkableSlopeOnInstance()

 Gets bOverrideWalkableSlopeOnInstance PhysicsEngine/BodyInstance.h  

FPhysicsActorHandle GetPhysicsActor()

   PhysicsEngine/BodyInstance.h  

FPhysicsActorHandle & GetPhysicsActorHandle ()

 TODO_CHAOSAPI: Deprecate ActorHandle Ref API. PhysicsEngine/BodyInstance.h  

const FPhysicsActorHandle & GetPhysicsActorHandle ()

   PhysicsEngine/BodyInstance.h  

FPhysicsActorHandle GetPhysicsActorWeldRoot()

   PhysicsEngine/BodyInstance.h  
Get the EPhysicsReplicationMode from the owning actor. PhysicsEngine/BodyInstance.h  

const FPhysScene * GetPhysicsScene ()

   PhysicsEngine/BodyInstance.h  

FPhysScene * GetPhysicsScene ()

 Get the scene that owns this body. PhysicsEngine/BodyInstance.h  

UPhysicalMaterial * GetPhysMaterialOverride()

 Get physical material override for this body PhysicsEngine/BodyInstance.h  

int32 GetPositionSolverIterationCount()

 Get the per-body position iterations (or -1 if bOverrideIterationCounts is false) PhysicsEngine/BodyInstance.h  

int32 GetProjectionSolverIterationCount()

 Get the per-body projection iterations (or -1 if bOverrideIterationCounts is false) PhysicsEngine/BodyInstance.h  

const FTransform & GetRelativeBodyTransform ( const FPhysicsShapeHandle& InShape
) const

 Returns the relative transform between root body and welded instance owned by the shape. PhysicsEngine/BodyInstance.h  

ECollisionResponse GetResponseToChannel ( ECollisionChannel Channel
) const

 Get the collision response of this body to a particular channel PhysicsEngine/BodyInstance.h  

const FCollisionResponseContainer & GetResponseToChannels()

 Get Collision ResponseToChannels container for this component PhysicsEngine/BodyInstance.h  

bool GetRigidBodyState ( FRigidBodyState& OutState
)

   PhysicsEngine/BodyInstance.h  

ECollisionEnabled::Type GetShapeCollisionEnabled ( const int32 ShapeIndex
) const

 Get the current type of collision enabled for a particular shape PhysicsEngine/BodyInstance.h  

const FCollisionResponseContainer & GetShapeResponseToChannels ( const int32 ShapeIndex
) const

 Get Collision ResponseToChannels container for a specific shape in this component PhysicsEngine/BodyInstance.h  

const FCollisionResponseContainer & GetShapeResponseToChannels ( const int32 ShapeIndex,
const FCollisionResponseContainer& DefaultResponseContainer
) const

   PhysicsEngine/BodyInstance.h  
Find the correct PhysicalMaterial for simple geometry on this body PhysicsEngine/BodyInstance.h  

float GetSleepThresholdMultiplier()

 Gets the multiplier to the threshold where the body will go to sleep automatically. PhysicsEngine/BodyInstance.h  

float GetSolverAsyncDeltaTime()

   PhysicsEngine/BodyInstance.h  

bool GetSquaredDistanceToBody ( const FVector& Point,
float& OutDistanceSquared,
FVector& OutPointOnBody
) const

 Get distance to the body surface if available It is only valid if BodyShape is convex If point is inside distance it will be 0 Returns false if geometry is not supported PhysicsEngine/BodyInstance.h  
Get current angular velocity in world space from physics body. PhysicsEngine/BodyInstance.h  
Get current angular velocity in world space from physics body. PhysicsEngine/BodyInstance.h  

FTransform GetUnrealWorldTransform ( bool bWithProjection,
bool bForceGlobalPose
) const

 Get current transform in world space from physics body. PhysicsEngine/BodyInstance.h  

FTransform GetUnrealWorldTransform_AssumesLocked ( bool bWithProjection,
bool bForceGlobalPose
) const

 Get current transform in world space from physics body. PhysicsEngine/BodyInstance.h  

FVector GetUnrealWorldVelocity()

 Get current velocity in world space from physics body. PhysicsEngine/BodyInstance.h  

FVector GetUnrealWorldVelocity_AssumesLocked()

 Get current velocity in world space from physics body. PhysicsEngine/BodyInstance.h  

FVector GetUnrealWorldVelocityAtPoint ( const FVector& Point
) const

 Get current velocity of a point on this physics body, in world space. PhysicsEngine/BodyInstance.h  

FVector GetUnrealWorldVelocityAtPoint_AssumesLocked ( const FVector& Point
) const

 Get current velocity of a point on this physics body, in world space. PhysicsEngine/BodyInstance.h  

bool GetUseMACD()

 [EXPERIMENTAL] Whether Motion-Aware Collision Detection is enabled PhysicsEngine/BodyInstance.h  

int32 GetVelocitySolverIterationCount()

 Get the per-body velocity iterations (or -1 if bOverrideIterationCounts is false) PhysicsEngine/BodyInstance.h  
Returns the slope override struct for this instance. PhysicsEngine/BodyInstance.h  

void InitBody ( UBodySetup* Setup,
const FTransform& Transform,
UPrimitiveComponent* PrimComp,
UObject* SourceObject,
FPhysScene* InRBScene,
const FInitBodySpawnParams& SpawnParams,
IPhysicsBodyInstanceOwner* BodyInstanceOwner
)

 Initialise a single rigid body (this FBodyInstance) for the given body setup PhysicsEngine/BodyInstance.h  

void InitBody ( UBodySetup* Setup,
const FTransform& Transform,
UPrimitiveComponent* PrimComp,
FPhysScene* InRBScene,
const FInitBodySpawnParams& SpawnParams,
IPhysicsBodyInstanceOwner* BodyInstanceOwner
)

 Initialise a single rigid body (this FBodyInstance) for the given body setup PhysicsEngine/BodyInstance.h  

void InitBody ( UBodySetup* Setup,
const FTransform& Transform,
UPrimitiveComponent* PrimComp,
FPhysScene* InRBScene
)

   PhysicsEngine/BodyInstance.h  
Initialise dynamic properties for this instance when using physics - this must be done after scene addition. PhysicsEngine/BodyInstance.h  

bool IsDynamic()

 Returns true if the body is not static PhysicsEngine/BodyInstance.h  
Whether inertia conditioning is enabled. PhysicsEngine/BodyInstance.h  

bool IsInstanceAwake()

 Returns whether this body is awake PhysicsEngine/BodyInstance.h  

bool IsInstanceSimulatingPhysics()

 Returns true if this body is simulating, false if it is fixed (kinematic) PhysicsEngine/BodyInstance.h  

bool IsNonKinematic()

 Returns true if the body is non kinematic PhysicsEngine/BodyInstance.h  

bool IsPartialIslandSleepAllowed()

   PhysicsEngine/BodyInstance.h  

bool IsPhysicsDisabled()

   PhysicsEngine/BodyInstance.h  

bool IsShapeBoundToBody ( const FPhysicsShapeHandle& Shape
) const

 Check if the shape is owned by this body instance PhysicsEngine/BodyInstance.h  

bool IsSolverAsyncDeltaTimeSet()

   PhysicsEngine/BodyInstance.h  

bool IsUsingMACD()

   PhysicsEngine/BodyInstance.h  

bool IsValidBodyInstance()

 See if this body is valid. PhysicsEngine/BodyInstance.h  

bool LineTrace ( FHitResult& OutHit,
const FVector& Start,
const FVector& End,
bool bTraceComplex,
bool bReturnPhysicalMaterial
) const

 Trace a ray against just this bodyinstance PhysicsEngine/BodyInstance.h  

void LoadProfileData ( bool bVerifyProfile
)

 Update profile data if required PhysicsEngine/BodyInstance.h  

FCalculateCustomProjection & OnCalculateCustomProjection ()

 Returns reference to the OnCalculateCustomProjection delegate. PhysicsEngine/BodyInstance.h  

FRecalculatedMassProperties & OnRecalculatedMassProperties ()

 Returns reference to the OnRecalculatedMassProperties delegate. PhysicsEngine/BodyInstance.h  

bool OverlapMulti ( TArray< struct FOverlapResult >& InOutOverlaps,
const UWorld* World,
const FTransform* pWorldToComponent,
const FVector& Pos,
const FRotator& Rot,
ECollisionChannel TestChannel,
const FComponentQueryParams& Params,
const FCollisionResponseParams& ResponseParams,
const FCollisionObjectQueryParams& ObjectQueryParams
) const

   PhysicsEngine/BodyInstance.h  

bool OverlapMulti ( TArray< struct FOverlapResult >& InOutOverlaps,
const UWorld* World,
const FTransform* pWorldToComponent,
const FVector& Pos,
const FQuat& Rot,
ECollisionChannel TestChannel,
const FComponentQueryParams& Params,
const FCollisionResponseParams& ResponseParams,
const FCollisionObjectQueryParams& ObjectQueryParams
) const

 Determines the set of components that this body instance would overlap with at the supplied location/rotation PhysicsEngine/BodyInstance.h  

bool OverlapTest ( const FVector& Position,
const FQuat& Rotation,
const FCollisionShape& CollisionShape,
FMTDResult* OutMTD,
bool bTraceComplex
) const

 Test if the bodyinstance overlaps with the specified shape at the specified position/rotation PhysicsEngine/BodyInstance.h  

bool OverlapTest_AssumesLocked ( const FVector& Position,
const FQuat& Rotation,
const FCollisionShape& CollisionShape,
FMTDResult* OutMTD,
bool bTraceComplex
) const

 Test if the bodyinstance overlaps with the specified shape at the specified position/rotation Note: This function is not thread safe. PhysicsEngine/BodyInstance.h  

bool OverlapTestForBodies ( const FVector& Position,
const FQuat& Rotation,
const TArray< FBodyInstance* >& Bodies,
bool bTraceComplex
) const

 Test if the bodyinstance overlaps with the specified body instances PhysicsEngine/BodyInstance.h  

bool OverlapTestForBody ( const FVector& Position,
const FQuat& Rotation,
FBodyInstance* Body,
bool bTraceComplex
) const

   PhysicsEngine/BodyInstance.h  

void PostShapeChange()

 After adding/removing shapes call this function to update mass distribution etc... PhysicsEngine/BodyInstance.h  

void PutInstanceToSleep()

 Force this body to sleep PhysicsEngine/BodyInstance.h  

void ReleasePhysicsActor()

   PhysicsEngine/BodyInstance.h  

bool ReplaceResponseToChannels ( ECollisionResponse OldResponse,
ECollisionResponse NewResponse
)

 Replace the channels on this body matching the old response with the new response PhysicsEngine/BodyInstance.h  

void SerializeState ( Chaos::FSerializedDataBuffer& OutSerializedState,
Chaos::ESerializedDataContext DataContext
)

 Serialized out the physics thread state of this body as an array of bytes PhysicsEngine/BodyInstance.h  

void SetAllowPartialIslandSleep ( bool bInAllowPartialIslandSleep
)

 [EXPERIMENTAL] Enable/disable Partial Island Sleeping for the entire island this body is in. PhysicsEngine/BodyInstance.h  

void SetAngularVelocityInRadians ( const FVector& NewAngVel,
bool bAddToCurrent,
bool bAutoWake
)

 Set the angular velocity of this body PhysicsEngine/BodyInstance.h  

void SetBodyTransform ( const FTransform& NewTransform,
ETeleportType Teleport,
bool bAutoWake
)

 Move the physics body to a new pose. PhysicsEngine/BodyInstance.h  

void SetCollisionEnabled ( ECollisionEnabled::Type NewType,
bool bUpdatePhysicsFilterData
)

 Controls what kind of collision is enabled for this body and allows optional disable physics rebuild PhysicsEngine/BodyInstance.h  

void SetCollisionProfileName ( FName InCollisionProfileName
)

 Set Collision Profile Name This function should be called outside of constructors to set profile name. PhysicsEngine/BodyInstance.h  

void SetCollisionProfileNameDeferred ( FName InCollisionProfileName
)

 Set Collision Profile Name (deferred) This function is called by constructors when they set ProfileName This will change current CollisionProfileName, but collision data will not be set up until the physics state is created or the collision profile is accessed. PhysicsEngine/BodyInstance.h  

void SetContactModification ( bool bNewContactModification
)

 Enables/disables contact modification PhysicsEngine/BodyInstance.h  

void SetContactReportForceThreshold ( float Threshold
)

 Set a new contact report force threhold. Threshold < 0 disables this feature. PhysicsEngine/BodyInstance.h  

void SetDOFLock ( EDOFMode::Type NewDOFMode
)

 Locks physical movement along axis. PhysicsEngine/BodyInstance.h  

void SetEnableGravity ( bool bGravityEnabled
)

 Enables/disables whether this body is affected by gravity. PhysicsEngine/BodyInstance.h  

void SetGravityGroupIndex ( int32 NewGravityGroupIndex
)

 Sets the gravity group index, which determines acceleration when gravity is enabled. PhysicsEngine/BodyInstance.h  

void SetGyroscopicTorqueEnabled ( bool bInGyroscopicTorqueEnabled
)

 Enabled/disables whether this body is affected by gyroscopic torque, mainly useful for long/thin objects that spin PhysicsEngine/BodyInstance.h  

void SetInertiaConditioningEnabled ( bool bEnabled
)

 Enable or disable inertia conditionin. PhysicsEngine/BodyInstance.h  

void SetInstanceNotifyRBCollision ( bool bNewNotifyCollision
)

 Set whether we should get a notification about physics collisions PhysicsEngine/BodyInstance.h  

void SetInstanceSimulatePhysics ( bool bSimulate,
bool bMaintainPhysicsBlending,
bool bPreserveExistingAttachment
)

 Set this body to either simulate or to be fixed/kinematic. PhysicsEngine/BodyInstance.h  

void SetLinearVelocity ( const FVector& NewVel,
bool bAddToCurrent,
bool bAutoWake
)

 Set the linear velocity of this body PhysicsEngine/BodyInstance.h  

void SetMaskFilter ( FMaskFilter InMaskFilter
)

 Updates the mask filter. PhysicsEngine/BodyInstance.h  

void SetMassOverride ( float MassInKG,
bool bNewOverrideMass
)

 Sets the mass override PhysicsEngine/BodyInstance.h  

void SetMassScale ( float InMassScale
)

 Modify the mass scale of this body PhysicsEngine/BodyInstance.h  

void SetMassSpaceLocal ( const FTransform& NewMassSpaceLocalTM
)

 TODO: this only works at runtime when the physics state has been created. PhysicsEngine/BodyInstance.h  

void SetMaxAngularVelocityInRadians ( float NewMaxAngVel,
bool bAddToCurrent,
bool bUpdateOverrideMaxAngularVelocity
)

 Set the maximum angular velocity of this body PhysicsEngine/BodyInstance.h  

void SetMaxDepenetrationVelocity ( float MaxVelocity
)

 Set the maximum velocity used to depenetrate this object from others when spawned with initial overlaps or teleports (does not affect overlaps as a result of normal movement). PhysicsEngine/BodyInstance.h  

void SetObjectType ( ECollisionChannel Channel
)

 Set the movement channel of this body to the one supplied PhysicsEngine/BodyInstance.h  

void SetOneWayInteraction ( bool InOneWayInteraction
)

 If set to true, this body will treat bodies that do not have the flag set as having infinite mass PhysicsEngine/BodyInstance.h  

void SetOverrideIterationCounts ( bool bOverride
)

   PhysicsEngine/BodyInstance.h  

void SetOverrideMaxDepenetrationVelocity ( bool bInEnabled
)

 Enable/Disable override of MaxDepenetrationVelocity PhysicsEngine/BodyInstance.h  

void SetPhysicsActor ( FPhysicsActorHandle InHandle
)

   PhysicsEngine/BodyInstance.h  

void SetPhysicsActorHandle ( FPhysicsActorHandle InHandle
)

   PhysicsEngine/BodyInstance.h  

void SetPhysicsDisabled ( bool bSetDisabled
)

 Disable/Re-Enable this body in the solver, when disable, the body won't be part of the simulation ( regardless if it's dynamic or kinematic ) and no collision will occur this can be used for performance control situation for example PhysicsEngine/BodyInstance.h  

void SetPhysMaterialOverride ( UPhysicalMaterial* NewPhysMaterial
)

 Set physical material override for this body PhysicsEngine/BodyInstance.h  

void SetPositionSolverIterationCount ( uint8 PositionSolverIterationCountIn
)

 Set the per-body position iterations (only used if bOverrideIterationCounts is true) PhysicsEngine/BodyInstance.h  

void SetProjectionSolverIterationCount ( uint8 ProjectionSolverIterationCountIn
)

 Set the per-body projection iterations (only used if bOverrideIterationCounts is true) PhysicsEngine/BodyInstance.h  

bool SetResponseToAllChannels ( ECollisionResponse NewResponse
)

 Set the response of this body to all channels PhysicsEngine/BodyInstance.h  

bool SetResponseToChannel ( ECollisionChannel Channel,
ECollisionResponse NewResponse
)

 Set the collision response of this body to a particular channel PhysicsEngine/BodyInstance.h  

bool SetResponseToChannels ( const FCollisionResponseContainer& NewResponses
)

 Set the response of this body to the supplied settings PhysicsEngine/BodyInstance.h  

void SetShapeCollisionEnabled ( const int32 ShapeIndex,
ECollisionEnabled::Type NewType,
bool bUpdatePhysicsFilterData
)

 Controls what kind of collision is enabled for a particular shape PhysicsEngine/BodyInstance.h  

bool SetShapeResponseToChannels ( const int32 ShapeIndex,
const FCollisionResponseContainer& NewResponses
)

 Set the response of a specific shape on this body to the supplied settings PhysicsEngine/BodyInstance.h  

void SetSmoothEdgeCollisionsEnabled ( bool bNewSmoothEdgeCollisions
)

 Enables/disabled smoothed edge collisions PhysicsEngine/BodyInstance.h  

void SetSolverAsyncDeltaTime ( const float NewSolverAsyncDeltaTime
)

   PhysicsEngine/BodyInstance.h  

void SetUpdateKinematicFromSimulation ( bool bUpdateKinematicFromSimulation
)

 Enables/disables whether this body, when kinematic, is updated from the simulation rather than when setting the kinematic target. PhysicsEngine/BodyInstance.h  

void SetUseCCD ( bool bInUseCCD
)

 Enable/disable Continuous Collision Detection feature PhysicsEngine/BodyInstance.h  

void SetUseMACD ( bool bInUseMACD
)

 [EXPERIMENTAL] Enable/disable Motion-Aware Collision Detection feature. PhysicsEngine/BodyInstance.h  

void SetVelocitySolverIterationCount ( uint8 VelocitySolverIterationCountIn
)

 Set the per-body velocity iterations (only used if bOverrideIterationCounts is true) PhysicsEngine/BodyInstance.h  

void SetWalkableSlopeOverride ( const FWalkableSlopeOverride& NewOverride,
bool bNewOverideSetting
)

 Sets a custom slope override struct for this instance. PhysicsEngine/BodyInstance.h  
Whether we should interpolate when substepping. PhysicsEngine/BodyInstance.h  

FAsyncTermBodyPayload StartAsyncTermBody_GameThread()

 Prepares the body to release its resources outside of the game thread. PhysicsEngine/BodyInstance.h  

bool Sweep ( FHitResult& OutHit,
const FVector& Start,
const FVector& End,
const FQuat& ShapeWorldRotation,
const FCollisionShape& Shape,
bool bTraceComplex
) const

 Trace a shape against just this bodyinstance PhysicsEngine/BodyInstance.h  

void TermBody ( bool bNeverDeferRelease
)

 Terminates the body, releasing resources Clean up the physics engine info for this instance. PhysicsEngine/BodyInstance.h  

void UnWeld ( FBodyInstance* Body
)

 Takes a welded body and unwelds it. PhysicsEngine/BodyInstance.h  

bool UpdateBodyScale ( const FVector& InScale3D,
bool bForceUpdate
)

 Update Body Scale PhysicsEngine/BodyInstance.h  

void UpdateDampingProperties()

 Update instance's linear and angular damping PhysicsEngine/BodyInstance.h  

void UpdateInstanceSimulatePhysics()

 Makes sure the current kinematic state matches the simulate flag PhysicsEngine/BodyInstance.h  

void UpdateMassProperties()

 Update instance's mass properties (mass, inertia and center-of-mass offset) based on MassScale, InstanceMassScale and COMNudge. PhysicsEngine/BodyInstance.h  

void UpdatePhysicalMaterials()

 Update the instance's material properties (friction, restitution) PhysicsEngine/BodyInstance.h  
Update the instances collision filtering data PhysicsEngine/BodyInstance.h  

void UpdateTriMeshVertices ( const TArray< FVector >& NewPositions
)

 Dynamically update the vertices of per-poly collision for this body. PhysicsEngine/BodyInstance.h  

void UseExternalCollisionProfile ( UBodySetup* InExternalCollisionProfileBodySetup
)

 Use the collision profile found in the given BodySetup's default BodyInstance PhysicsEngine/BodyInstance.h  

void WakeInstance()

 Wake this body PhysicsEngine/BodyInstance.h  

bool Weld ( FBodyInstance* Body,
const FTransform& RelativeTM
)

 Takes two body instances and welds them together to create a single simulated rigid body. PhysicsEngine/BodyInstance.h  

Protected

Name Remarks Include Path Unreal Specifiers

void UpdateInterpolateWhenSubStepping()

 Update the substepping interpolation flag PhysicsEngine/BodyInstance.h  

Static

Name Remarks Include Path Unreal Specifiers

static void ApplyMaterialToShape_AssumesLocked ( const FPhysicsShapeHandle& InShape,
UPhysicalMaterial* SimplePhysMat,
const TArrayView< UPhysicalMaterial* >& ComplexPhysMats,
const TArrayView< FPhysicalMaterialMaskParams >* ComplexPhysMatMasks
)

 Apply a material directly to the passed in shape. PhysicsEngine/BodyInstance.h  

static void AsyncTermBody ( FAsyncTermBodyPayload& Payload
)

 Releases body resources provided by Payload which was returned by StartAsyncTermBody_GameThread (can be called outside of game thread). PhysicsEngine/BodyInstance.h  

static void BuildBodyCollisionFlags ( FBodyCollisionFlags& OutFlags,
ECollisionEnabled::Type UseCollisionEnabled,
bool bUseComplexAsSimple
)

 Build the flags to control which types of collision (sim and query) shapes owned by this BodyInstance should have. PhysicsEngine/BodyInstance.h  

static void GetComplexPhysicalMaterials ( const FBodyInstance* BodyInstance,
TWeakObjectPtr< UPrimitiveComponent > Owner,
TArray< UPhysicalMaterial* >& OutPhysMaterials,
TArray< FPhysicalMaterialMaskParams >* OutPhysMaterialMasks,
IPhysicsBodyInstanceOwner* InBodyInstanceOwner
)

 Find the correct PhysicalMaterial and PhysicalMaterialMasks for complex geometry on a given body and owner. PhysicsEngine/BodyInstance.h  
Find the correct PhysicalMaterial for simple geometry on a given body and owner. PhysicsEngine/BodyInstance.h  

static void InitStaticBodies ( TArray< FBodyInstance* >&& Bodies,
TArray< FTransform >&& Transforms,
UBodySetup* BodySetup,
UPrimitiveComponent* PrimitiveComp,
FPhysScene* InRBScene,
IPhysicsBodyInstanceOwner* BodyInstanceOwner
)

 Standalone path to batch initialize large amounts of static bodies. PhysicsEngine/BodyInstance.h  

static void InitStaticBodies ( const TArray< FBodyInstance* >& Bodies,
const TArray< FTransform >& Transforms,
UBodySetup* BodySetup,
UPrimitiveComponent* PrimitiveComp,
FPhysScene* InRBScene
)

 Standalone path to batch initialize large amounts of static bodies, which will be deferred till the next scene update for fast scene addition. PhysicsEngine/BodyInstance.h  

static bool IsValidCollisionProfileName ( FName InCollisionProfileName
)

 Return true if the collision profile name is valid PhysicsEngine/BodyInstance.h  

static EDOFMode::Type ResolveDOFMode ( EDOFMode::Type DOFMode
)

   PhysicsEngine/BodyInstance.h  

static bool ValidateTransform ( const FTransform& Transform,
const FString& DebugName,
const UBodySetup* Setup
)

 Validate a body transform, outputting debug info PhysicsEngine/BodyInstance.h  

Deprecated Variables

Name Type Remarks Include Path Unreal Specifiers
ResponseToChannels_DEPRECATED FCollisionResponseContainer Types of objects that this physics objects will collide with. PhysicsEngine/BodyInstance.h  

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