void UPaperTileMap::ResizeMap(int32 NewWidth, int32 NewHeight, bool bForceResize)
{
if (bForceResize || (NewWidth != MapWidth) || (NewHeight != MapHeight))
{
MapWidth = FMath::Max(NewWidth, 1);
MapHeight = FMath::Max(NewHeight, 1);
// Resize all of the existing layers
for (int32 LayerIndex = 0; LayerIndex < TileLayers.Num(); ++LayerIndex)
{
UPaperTileLayer* TileLayer = TileLayers[LayerIndex];
TileLayer->Modify();
TileLayer->ResizeMap(MapWidth, MapHeight);
}
}
}
void STileLayerList::MergeLayerDown()
{
if (UPaperTileMap* TileMap = TileMapPtr.Get())
{
const int32 SourceIndex = GetSelectionIndex();
const int32 TargetIndex = SourceIndex + 1;
if ((SourceIndex != INDEX_NONE) && (TargetIndex != INDEX_NONE))
{
const FScopedTransaction Transaction(LOCTEXT("TileMapMergeLayerDown", "Merge Layer Down"));
TileMap->SetFlags(RF_Transactional);
TileMap->Modify();
UPaperTileLayer* SourceLayer = TileMap->TileLayers[SourceIndex];
UPaperTileLayer* TargetLayer = TileMap->TileLayers[TargetIndex];
TargetLayer->SetFlags(RF_Transactional);
TargetLayer->Modify();
// Copy the non-empty tiles from the source to the target layer
for (int32 Y = 0; Y < SourceLayer->LayerWidth; ++Y)
{
for (int32 X = 0; X < SourceLayer->LayerWidth; ++X)
{
FPaperTileInfo TileInfo = SourceLayer->GetCell(X, Y);
if (TileInfo.IsValid())
{
TargetLayer->SetCell(X, Y, TileInfo);
}
}
}
// Remove the source layer
TileMap->TileLayers.RemoveAt(SourceIndex);
// Update viewers
PostEditNotfications();
}
}
}