bool UInterpToMovementComponent::HandleHitWall(const FHitResult& Hit, float Time, const FVector& MoveDelta)
{
AActor* ActorOwner = UpdatedComponent ? UpdatedComponent->GetOwner() : NULL;
if (!CheckStillInWorld() || !ActorOwner || ActorOwner->IsPendingKill())
{
return true;
}
HandleImpact(Hit, Time, MoveDelta);
if (ActorOwner->IsPendingKill() || !UpdatedComponent)
{
return true;
}
return false;
}
UProjectileMovementComponent::EHandleBlockingHitResult UProjectileMovementComponent::HandleBlockingHit(const FHitResult& Hit, float TimeTick, const FVector& MoveDelta, float& SubTickTimeRemaining)
{
AActor* ActorOwner = UpdatedComponent ? UpdatedComponent->GetOwner() : NULL;
if (!CheckStillInWorld() || !ActorOwner || ActorOwner->IsPendingKill())
{
return EHandleBlockingHitResult::Abort;
}
HandleImpact(Hit, TimeTick, MoveDelta);
if (ActorOwner->IsPendingKill() || HasStoppedSimulation())
{
return EHandleBlockingHitResult::Abort;
}
SubTickTimeRemaining = TimeTick * (1.f - Hit.Time);
return EHandleBlockingHitResult::Deflect;
}
void UProjectileMovementComponent::TickComponent(float DeltaTime, enum ELevelTick TickType, FActorComponentTickFunction *ThisTickFunction)
{
QUICK_SCOPE_CYCLE_COUNTER( STAT_ProjectileMovementComponent_TickComponent );
// skip if don't want component updated when not rendered or updated component can't move
if (HasStoppedSimulation() || ShouldSkipUpdate(DeltaTime))
{
return;
}
Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
AActor* ActorOwner = UpdatedComponent->GetOwner();
if ( !ActorOwner || !CheckStillInWorld() )
{
return;
}
if (UpdatedComponent->IsSimulatingPhysics())
{
return;
}
float RemainingTime = DeltaTime;
uint32 NumBounces = 0;
int32 Iterations = 0;
FHitResult Hit(1.f);
while( RemainingTime >= MIN_TICK_TIME && (Iterations < MaxSimulationIterations) && !ActorOwner->IsPendingKill() && !HasStoppedSimulation() )
{
Iterations++;
// subdivide long ticks to more closely follow parabolic trajectory
const float TimeTick = ShouldUseSubStepping() ? GetSimulationTimeStep(RemainingTime, Iterations) : RemainingTime;
RemainingTime -= TimeTick;
Hit.Time = 1.f;
const FVector OldVelocity = Velocity;
const FVector MoveDelta = ComputeMoveDelta(OldVelocity, TimeTick);
const FRotator NewRotation = (bRotationFollowsVelocity && !OldVelocity.IsNearlyZero(0.01f)) ? OldVelocity.Rotation() : ActorOwner->GetActorRotation();
// Move the component
if (bShouldBounce)
{
// If we can bounce, we are allowed to move out of penetrations, so use SafeMoveUpdatedComponent which does that automatically.
SafeMoveUpdatedComponent( MoveDelta, NewRotation, true, Hit );
}
else
{
// If we can't bounce, then we shouldn't adjust if initially penetrating, because that should be a blocking hit that causes a hit event and stop simulation.
TGuardValue<EMoveComponentFlags> ScopedFlagRestore(MoveComponentFlags, MoveComponentFlags | MOVECOMP_NeverIgnoreBlockingOverlaps);
MoveUpdatedComponent(MoveDelta, NewRotation, true, &Hit );
}
// If we hit a trigger that destroyed us, abort.
if( ActorOwner->IsPendingKill() || HasStoppedSimulation() )
{
return;
}
// Handle hit result after movement
if( !Hit.bBlockingHit )
{
PreviousHitTime = 1.f;
bIsSliding = false;
// Only calculate new velocity if events didn't change it during the movement update.
if (Velocity == OldVelocity)
{
Velocity = ComputeVelocity(Velocity, TimeTick);
}
}
else
{
// Only calculate new velocity if events didn't change it during the movement update.
if (Velocity == OldVelocity)
{
// re-calculate end velocity for partial time
Velocity = (Hit.Time > KINDA_SMALL_NUMBER) ? ComputeVelocity(OldVelocity, TimeTick * Hit.Time) : OldVelocity;
}
// Handle blocking hit
float SubTickTimeRemaining = TimeTick * (1.f - Hit.Time);
const EHandleBlockingHitResult HandleBlockingResult = HandleBlockingHit(Hit, TimeTick, MoveDelta, SubTickTimeRemaining);
if (HandleBlockingResult == EHandleBlockingHitResult::Abort || HasStoppedSimulation())
{
break;
}
else if (HandleBlockingResult == EHandleBlockingHitResult::Deflect)
{
NumBounces++;
HandleDeflection(Hit, OldVelocity, NumBounces, SubTickTimeRemaining);
PreviousHitTime = Hit.Time;
PreviousHitNormal = ConstrainNormalToPlane(Hit.Normal);
}
else if (HandleBlockingResult == EHandleBlockingHitResult::AdvanceNextSubstep)
{
// Reset deflection logic to ignore this hit
PreviousHitTime = 1.f;
}
else
{
// Unhandled EHandleBlockingHitResult
checkNoEntry();
}
// A few initial bounces should add more time and iterations to complete most of the simulation.
if (NumBounces <= 2 && SubTickTimeRemaining >= MIN_TICK_TIME)
{
RemainingTime += SubTickTimeRemaining;
Iterations--;
}
}
}
UpdateComponentVelocity();
}
void UInterpToMovementComponent::TickComponent(float DeltaTime, enum ELevelTick TickType, FActorComponentTickFunction *ThisTickFunction)
{
QUICK_SCOPE_CYCLE_COUNTER(STAT_InterpToMovementComponent_TickComponent);
Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
// skip if don't want component updated when not rendered or updated component can't move
if (!UpdatedComponent || ShouldSkipUpdate(DeltaTime))
{
return;
}
AActor* ActorOwner = UpdatedComponent->GetOwner();
if (!ActorOwner || !CheckStillInWorld())
{
return;
}
if (UpdatedComponent->IsSimulatingPhysics())
{
return;
}
if((bStopped == true ) || ( ActorOwner->IsPendingKill() ) )
{
return;
}
if( ControlPoints.Num()== 0 )
{
return;
}
// This will update any control points coordinates that are linked to actors.
UpdateControlPoints(false);
float RemainingTime = DeltaTime;
int32 NumBounces = 0;
int32 Iterations = 0;
FHitResult Hit(1.f);
FVector WaitPos = FVector::ZeroVector;
if (bIsWaiting == true)
{
WaitPos = UpdatedComponent->GetComponentLocation();
}
while (RemainingTime >= MIN_TICK_TIME && (Iterations < MaxSimulationIterations) && !ActorOwner->IsPendingKill() && UpdatedComponent)
{
Iterations++;
const float TimeTick = ShouldUseSubStepping() ? GetSimulationTimeStep(RemainingTime, Iterations) : RemainingTime;
RemainingTime -= TimeTick;
// Calculate the current time with this tick iteration
float Time = FMath::Clamp(CurrentTime + ((DeltaTime*TimeMultiplier)*CurrentDirection),0.0f,1.0f);
FVector MoveDelta = ComputeMoveDelta(Time);
// Update the rotation on the spline if required
FRotator CurrentRotation = UpdatedComponent->GetComponentRotation();
// Move the component
if ((bPauseOnImpact == false ) && (BehaviourType != EInterpToBehaviourType::OneShot))
{
// If we can bounce, we are allowed to move out of penetrations, so use SafeMoveUpdatedComponent which does that automatically.
SafeMoveUpdatedComponent(MoveDelta, CurrentRotation, true, Hit);
}
else
{
// If we can't bounce, then we shouldn't adjust if initially penetrating, because that should be a blocking hit that causes a hit event and stop simulation.
TGuardValue<EMoveComponentFlags> ScopedFlagRestore(MoveComponentFlags, MoveComponentFlags | MOVECOMP_NeverIgnoreBlockingOverlaps);
MoveUpdatedComponent(MoveDelta, CurrentRotation, true, &Hit);
}
//DrawDebugPoint(GetWorld(), UpdatedComponent->GetComponentLocation(), 16, FColor::White,true,5.0f);
// If we hit a trigger that destroyed us, abort.
if (ActorOwner->IsPendingKill() || !UpdatedComponent)
{
return;
}
// Handle hit result after movement
if (!Hit.bBlockingHit)
{
// If we were 'waiting' were not any more - broadcast we are off again
if( bIsWaiting == true )
{
OnWaitEndDelegate.Broadcast(Hit, Time);
bIsWaiting = false;
}
else
{
CalculateNewTime(CurrentTime, TimeTick, Hit, true, bStopped);
if (bStopped == true)
{
return;
}
}
}
else
{
if (HandleHitWall(Hit, TimeTick, MoveDelta))
{
break;
}
NumBounces++;
float SubTickTimeRemaining = TimeTick * (1.f - Hit.Time);
// A few initial bounces should add more time and iterations to complete most of the simulation.
if (NumBounces <= 2 && SubTickTimeRemaining >= MIN_TICK_TIME)
{
RemainingTime += SubTickTimeRemaining;
Iterations--;
}
}
}
if( bIsWaiting == false )
{
FHitResult DummyHit;
CurrentTime = CalculateNewTime(CurrentTime, DeltaTime, DummyHit, false, bStopped);
}
UpdateComponentVelocity();
}