void ANavModifierVolume::GetNavigationData(FNavigationRelevantData& Data) const
{
if (Brush && AreaClass && AreaClass != UNavigationSystem::GetDefaultWalkableArea())
{
FAreaNavModifier AreaMod(GetBrushComponent(), AreaClass);
Data.Modifiers.Add(AreaMod);
}
}
void UNavCollision::GetNavigationModifier(FCompositeNavModifier& Modifier, const FTransform& LocalToWorld)
{
QUICK_SCOPE_CYCLE_COUNTER(STAT_NavCollision_GetNavigationModifier);
const TSubclassOf<UNavArea> UseAreaClass = AreaClass ? AreaClass : UNavigationSystem::GetDefaultObstacleArea();
Modifier.ReserveForAdditionalAreas(CylinderCollision.Num() + BoxCollision.Num()
+ (ConvexCollision.VertexBuffer.Num() > 0 ? ConvexShapeIndices.Num() : 0));
for (int32 i = 0; i < CylinderCollision.Num(); i++)
{
FTransform CylinderToWorld = LocalToWorld;
const FVector Origin = CylinderToWorld.TransformPosition(CylinderCollision[i].Offset);
CylinderToWorld.SetTranslation(Origin);
FAreaNavModifier AreaMod(CylinderCollision[i].Radius, CylinderCollision[i].Height, CylinderToWorld, UseAreaClass);
AreaMod.SetIncludeAgentHeight(true);
Modifier.Add(AreaMod);
}
for (int32 i = 0; i < BoxCollision.Num(); i++)
{
FTransform BoxToWorld = LocalToWorld;
const FVector Origin = BoxToWorld.TransformPosition(BoxCollision[i].Offset);
BoxToWorld.SetTranslation(Origin);
FAreaNavModifier AreaMod(BoxCollision[i].Extent, BoxToWorld, UseAreaClass);
AreaMod.SetIncludeAgentHeight(true);
Modifier.Add(AreaMod);
}
if (ShouldUseConvexCollision())
{
// rebuild collision data if needed
if (!bHasConvexGeometry)
{
GatherCollision();
}
if (ConvexCollision.VertexBuffer.Num() > 0)
{
int32 LastVertIndex = 0;
TArray<FVector> Verts(ConvexCollision.VertexBuffer);
for (int32 i = 0; i < ConvexShapeIndices.Num(); i++)
{
int32 FirstVertIndex = LastVertIndex;
LastVertIndex = ConvexShapeIndices.IsValidIndex(i + 1) ? ConvexShapeIndices[i + 1] : ConvexCollision.VertexBuffer.Num();
FAreaNavModifier AreaMod(Verts, FirstVertIndex, LastVertIndex, ENavigationCoordSystem::Unreal, LocalToWorld, UseAreaClass);
AreaMod.SetIncludeAgentHeight(true);
Modifier.Add(AreaMod);
}
}
}
}
