FORCEINLINE bool operator()(const TWeakObjectPtr<AActor>& A, const TWeakObjectPtr<AActor>& B) const
{
if (XYOnly)
{
// I could probably ditch this if branch: (return DistanceCheck || !Ascending)
// but I'd rather keep things explicit and branch prediction should take care of things anyway since its constant.
if (Ascending) // We want nearest
{
return FVector::DistSquaredXY(A->GetActorLocation(), SourceLocation) < FVector::DistSquaredXY(B->GetActorLocation(), SourceLocation);
}
else
{
return FVector::DistSquaredXY(A->GetActorLocation(), SourceLocation) > FVector::DistSquaredXY(B->GetActorLocation(), SourceLocation);
}
}
else
{
if (Ascending) // We want nearest
{
return FVector::DistSquared(A->GetActorLocation(), SourceLocation) < FVector::DistSquared(B->GetActorLocation(), SourceLocation);
}
else
{
return FVector::DistSquared(A->GetActorLocation(), SourceLocation) > FVector::DistSquared(B->GetActorLocation(), SourceLocation);
}
}
}
/** Tick */
void UFluidSurfaceComponent::TickComponent( float DeltaTime, enum ELevelTick TickType, FActorComponentTickFunction *ThisTickFunction )
{
Super::TickComponent( DeltaTime, TickType, ThisTickFunction );
LastDeltaTime = DeltaTime;
float SimStep = 1.f / UpdateRate;
static float Time = 0.0f;
#if WITH_EDITOR
/* Only update if checked */
if( !UpdateComponent )
return;
#endif
/* If this water hasn't been rendered for a while, stop updating */
if (LastRenderTime > 0 && GetWorld()->TimeSeconds - LastRenderTime > 1)
return;
Time += DeltaTime;
if( Time > SimStep )
{
Time = 0.0f;
LatestVerts = !LatestVerts;
/* Add ripples for actors in the water */
TArray<struct FOverlapResult> OverlappingActors;
FCollisionShape CollisionShape;
CollisionShape.SetBox( FluidBoundingBox.GetExtent( ) );
/* Find overlapping actors */
GetWorld()->OverlapMultiByChannel(OverlappingActors, GetComponentLocation(), GetComponentQuat(), ECC_WorldDynamic, CollisionShape, FCollisionQueryParams(false));
// @todo: handle better
/* Iterate through found overlapping actors */
for( int i = 0; i < OverlappingActors.Num( ); i++ )
{
TWeakObjectPtr<AActor> Actor = OverlappingActors[ i ].Actor;
/* Dont care about self and modifiers */
if( Actor != NULL && !Actor->IsA( AFluidSurfaceActor::StaticClass( ) ) && !Actor->IsA( AFluidSurfaceModifier::StaticClass( ) ) )
{
FVector LocalVel = GetWorldToComponent( ).TransformVector( Actor->GetVelocity( ) );
float HorizVelMag = LocalVel.Size( );
Pling( Actor->GetActorLocation( ), RippleVelocityFactor * HorizVelMag, Actor->GetSimpleCollisionRadius( ) );
}
}
/* Do test ripple (moving around in a circle) */
if( GIsEditor && TestRipple )
{
TestRippleAng += SimStep * MyU2Rad * TestRippleSpeed;
FVector WorldRipplePos, LocalRipplePos;
float RippleRadius = 0.3f * ( FluidXSize - 1 ) * FluidGridSpacing;
if( FluidGridType == EFluidGridType::FGT_Hexagonal )
RippleRadius = FMath::Max( RippleRadius, 0.3f * ( FluidYSize - 1 ) * FluidGridSpacing * ROOT3OVER2 );
else
RippleRadius = FMath::Max( RippleRadius, 0.3f * ( FluidYSize - 1 ) * FluidGridSpacing );
LocalRipplePos.X = ( RippleRadius * FMath::Sin( TestRippleAng ) );
LocalRipplePos.Y = ( RippleRadius * FMath::Cos( TestRippleAng ) );
LocalRipplePos.Z = 0.f;
WorldRipplePos = ComponentToWorld.TransformPosition( LocalRipplePos );
Pling( WorldRipplePos, TestRippleStrength, TestRippleRadius );
}
/* Add modifier effects */
for( int i = 0; i < Modifiers.Num( ); i++ )
{
if( Modifiers[ i ] && Modifiers[ i ]->Active )
Modifiers[ i ]->Update( DeltaTime );
}
/* Need to send new dynamic data */
MarkRenderDynamicDataDirty( );
}
}
