bool ACharacter::CanUseRootMotionRepMove(const FSimulatedRootMotionReplicatedMove& RootMotionRepMove, const FAnimMontageInstance& ClientMontageInstance) const
{
// Ignore outdated moves.
if( GetWorld()->TimeSince(RootMotionRepMove.Time) <= 0.5f )
{
// Make sure montage being played matched between client and server.
if( RootMotionRepMove.RootMotion.AnimMontage && (RootMotionRepMove.RootMotion.AnimMontage == ClientMontageInstance.Montage) )
{
UAnimMontage * AnimMontage = ClientMontageInstance.Montage;
const float ServerPosition = RootMotionRepMove.RootMotion.Position;
const float ClientPosition = ClientMontageInstance.GetPosition();
const float DeltaPosition = (ClientPosition - ServerPosition);
const int32 CurrentSectionIndex = AnimMontage->GetSectionIndexFromPosition(ClientPosition);
if( CurrentSectionIndex != INDEX_NONE )
{
const int32 NextSectionIndex = (CurrentSectionIndex < ClientMontageInstance.NextSections.Num()) ? ClientMontageInstance.NextSections[CurrentSectionIndex] : INDEX_NONE;
// We can only extract root motion if we are within the same section.
// It's not trivial to jump through sections in a deterministic manner, but that is luckily not frequent.
const bool bSameSections = (AnimMontage->GetSectionIndexFromPosition(ServerPosition) == CurrentSectionIndex);
// if we are looping and just wrapped over, skip. That's also not easy to handle and not frequent.
const bool bHasLooped = (NextSectionIndex == CurrentSectionIndex) && (FMath::Abs(DeltaPosition) > (AnimMontage->GetSectionLength(CurrentSectionIndex) / 2.f));
// Can only simulate forward in time, so we need to make sure server move is not ahead of the client.
const bool bServerAheadOfClient = ((DeltaPosition * ClientMontageInstance.GetPlayRate()) < 0.f);
UE_LOG(LogRootMotion, Log, TEXT("\t\tACharacter::CanUseRootMotionRepMove ServerPosition: %.3f, ClientPosition: %.3f, DeltaPosition: %.3f, bSameSections: %d, bHasLooped: %d, bServerAheadOfClient: %d"),
ServerPosition, ClientPosition, DeltaPosition, bSameSections, bHasLooped, bServerAheadOfClient);
return bSameSections && !bHasLooped && !bServerAheadOfClient;
}
}
}
return false;
}
float UAnimInstance::PlaySlotAnimation(UAnimSequenceBase* Asset, FName SlotNodeName, float BlendInTime, float BlendOutTime, float InPlayRate)
{
// create temporary montage and play
bool bValidAsset = Asset && !Asset->IsA(UAnimMontage::StaticClass());
if (!bValidAsset)
{
// user warning
UE_LOG(LogAnimation, Warning, TEXT("Invalid Asset. If Montage, use Montage_Play"));
return 0.f;
}
if (SlotNodeName == NAME_None)
{
// user warning
UE_LOG(LogAnimation, Warning, TEXT("SlotNode Name is required. Make sure to add Slot Node in your anim graph and name it."));
return 0.f;
}
USkeleton * AssetSkeleton = Asset->GetSkeleton();
if (!CurrentSkeleton->IsCompatible(AssetSkeleton))
{
UE_LOG(LogAnimation, Warning, TEXT("The Skeleton isn't compatible"));
return 0.f;
}
// now play
UAnimMontage * NewMontage = NewObject<UAnimMontage>();
NewMontage->SetSkeleton(AssetSkeleton);
// add new track
FSlotAnimationTrack NewTrack;
NewTrack.SlotName = SlotNodeName;
FAnimSegment NewSegment;
NewSegment.AnimReference = Asset;
NewSegment.AnimStartTime = 0.f;
NewSegment.AnimEndTime = Asset->SequenceLength;
NewSegment.AnimPlayRate = 1.f;
NewSegment.StartPos = 0.f;
NewMontage->SequenceLength = Asset->SequenceLength;
NewTrack.AnimTrack.AnimSegments.Add(NewSegment);
FCompositeSection NewSection;
NewSection.SectionName = TEXT("Default");
NewSection.StartTime = 0.f;
// add new section
NewMontage->CompositeSections.Add(NewSection);
NewMontage->BlendInTime = BlendInTime;
NewMontage->BlendOutTime = BlendOutTime;
NewMontage->SlotAnimTracks.Add(NewTrack);
return Montage_Play(NewMontage, InPlayRate);
}
bool UAnimInstance::IsPlayingSlotAnimation(UAnimSequenceBase* Asset, FName SlotNodeName )
{
// check if this is playing
FAnimMontageInstance * CurrentInstance = GetActiveMontageInstance();
// make sure what is active right now is transient that we created by request
if ( CurrentInstance && CurrentInstance->Montage && CurrentInstance->Montage->GetOuter() == GetTransientPackage() )
{
UAnimMontage * CurMontage = CurrentInstance->Montage;
const FAnimTrack * AnimTrack = CurMontage->GetAnimationData(SlotNodeName);
if (AnimTrack && AnimTrack->AnimSegments.Num() == 1)
{
// find if the
return (AnimTrack->AnimSegments[0].AnimReference == Asset);
}
}
return false;
}
UObject* UAnimMontageFactory::FactoryCreateNew(UClass* Class, UObject* InParent, FName Name, EObjectFlags Flags, UObject* Context, FFeedbackContext* Warn)
{
if (TargetSkeleton || SourceAnimation)
{
UAnimMontage* AnimMontage = ConstructObject<UAnimMontage>(Class,InParent,Name,Flags);
if(SourceAnimation)
{
USkeleton* SourceSkeleton = SourceAnimation->GetSkeleton();
//Make sure we haven't asked to create an AnimComposite with mismatching skeletons
check(TargetSkeleton == NULL || TargetSkeleton == SourceSkeleton);
TargetSkeleton = SourceSkeleton;
FAnimSegment NewSegment;
NewSegment.AnimReference = SourceAnimation;
NewSegment.AnimStartTime = 0.f;
NewSegment.AnimEndTime = SourceAnimation->SequenceLength;
NewSegment.AnimPlayRate = 1.f;
NewSegment.LoopingCount = 1;
NewSegment.StartPos = 0.f;
FSlotAnimationTrack NewTrack;
NewTrack.AnimTrack.AnimSegments.Add(NewSegment);
NewTrack.SlotName = FAnimSlotGroup::DefaultSlotName;
AnimMontage->SlotAnimTracks.Add( NewTrack );
AnimMontage->SetSequenceLength(SourceAnimation->SequenceLength);
}
AnimMontage->SetSkeleton(TargetSkeleton);
return AnimMontage;
}
return NULL;
}
PyObject *py_ue_add_anim_composite_section(ue_PyUObject * self, PyObject * args)
{
ue_py_check(self);
char *name;
float time;
if (!PyArg_ParseTuple(args, "sf:add_anim_composite_section", &name, &time))
return nullptr;
UAnimMontage *anim = ue_py_check_type<UAnimMontage>(self);
if (!anim)
return PyErr_Format(PyExc_Exception, "UObject is not a UAnimMontage.");
return PyLong_FromLong(anim->AddAnimCompositeSection(FName(UTF8_TO_TCHAR(name)), time));
}