void ADraggableMoveTile::UpdateIndicator()
{
auto indicatorBody = indicatorParticle->EmitterInstances[0];
auto Z_offset = FVector(0.0f, 0.0f, 30.0f);
auto sourcePoint = GetActorLocation() + Z_offset;
auto targetPoint = newGoalPos;
targetPoint += Z_offset;
if (isSelected)
{
arrowMeshComponent->SetHiddenInGame(false);
indicatorBody->SetBeamSourcePoint(sourcePoint, 0);
indicatorBody->SetBeamTargetPoint(targetPoint, 0);
arrowMeshComponent->SetWorldLocation(targetPoint);
auto rot = FRotationMatrix::MakeFromX(targetPoint - sourcePoint);
arrowMeshComponent->SetWorldRotation(rot.Rotator());
}
else
{
indicatorBody->SetBeamSourcePoint(GetActorLocation(), 0);
indicatorBody->SetBeamTargetPoint(GetActorLocation(), 0);
arrowMeshComponent->SetWorldLocation(GetActorLocation());
arrowMeshComponent->SetWorldRotation(FRotationMatrix::Identity.Rotator());
arrowMeshComponent->SetHiddenInGame(true);
}
auto indicatorBodyMaterial = indicatorParticle->CreateDynamicMaterialInstance(0);
indicatorBodyMaterial->SetScalarParameterValue(TEXT("IsDestinationValid"), canSnap && !destinationOccupied ? 1.0f : 0.0f);
auto arrowMaterial = arrowMeshComponent->CreateDynamicMaterialInstance(0);
arrowMaterial->SetScalarParameterValue(TEXT("IsDestinationValid"), canSnap && !destinationOccupied ? 1.0f : 0.0f);
}
void UMaterialInstanceDynamic::K2_InterpolateMaterialInstanceParams(UMaterialInstance* MaterialA, UMaterialInstance* MaterialB, float Alpha)
{
if (MaterialA != NULL && MaterialB != NULL)
{
// Interpolate the scalar parameters common to both materials
for( int32 ParamIdx = 0; ParamIdx < MaterialA->ScalarParameterValues.Num(); ParamIdx++ )
{
FScalarParameterValue* MaterialAParam = &MaterialA->ScalarParameterValues[ParamIdx];
FScalarParameterValue* MaterialBParam = GameThread_FindParameterByName(MaterialB->ScalarParameterValues, MaterialAParam->ParameterName);
// Found a parameter common to both...
if( MaterialBParam )
{
SetScalarParameterValue(MaterialAParam->ParameterName, FMath::Lerp(MaterialAParam->ParameterValue, MaterialBParam->ParameterValue, Alpha));
}
}
// Interpolate the vector parameters common to both
for( int32 ParamIdx = 0; ParamIdx < MaterialA->VectorParameterValues.Num(); ParamIdx++ )
{
FVectorParameterValue* MaterialAParam = &MaterialA->VectorParameterValues[ParamIdx];
FVectorParameterValue* MaterialBParam = GameThread_FindParameterByName(MaterialB->VectorParameterValues, MaterialAParam->ParameterName);
// Found a parameter common to both...
if( MaterialBParam )
{
SetVectorParameterValue(MaterialAParam->ParameterName, FMath::Lerp(MaterialAParam->ParameterValue, MaterialBParam->ParameterValue, Alpha));
}
}
}
}
