private void UpdateVis(Vector3 pos)
{
bool flag = def.IsValidPlaceLocation(visualizer, pos, buildingOrientation, out string _);
bool flag2 = def.IsValidReplaceLocation(pos, buildingOrientation, def.ReplacementLayer, def.ObjectLayer);
flag = (flag || flag2);
if ((Object)visualizer != (Object)null)
{
Color c = Color.white;
float strength = 0f;
if (!flag)
{
c = Color.red;
strength = 1f;
}
SetColor(visualizer, c, strength);
}
int num = Grid.PosToCell(pos);
if ((Object)def != (Object)null)
{
Vector3 vector = Grid.CellToPosCBC(num, def.SceneLayer);
visualizer.transform.SetPosition(vector);
base.transform.SetPosition(vector - Vector3.up * 0.5f);
if (def.IsTilePiece)
{
ClearTilePreview();
if (Grid.IsValidBuildingCell(num))
{
GameObject gameObject = Grid.Objects[num, (int)def.TileLayer];
if ((Object)gameObject == (Object)null)
{
Grid.Objects[num, (int)def.TileLayer] = visualizer;
}
if (def.isKAnimTile)
{
GameObject x = null;
if (def.ReplacementLayer != ObjectLayer.NumLayers)
{
x = Grid.Objects[num, (int)def.ReplacementLayer];
}
if ((Object)gameObject == (Object)null || ((Object)gameObject.GetComponent <Constructable>() == (Object)null && (Object)x == (Object)null))
{
TileVisualizer.RefreshCell(num, def.TileLayer, def.ReplacementLayer);
if ((Object)def.BlockTileAtlas != (Object)null)
{
int renderLayer = LayerMask.NameToLayer("Overlay");
BlockTileRenderer blockTileRenderer = World.Instance.blockTileRenderer;
blockTileRenderer.SetInvalidPlaceCell(num, !flag);
if (lastCell != num)
{
blockTileRenderer.SetInvalidPlaceCell(lastCell, false);
}
blockTileRenderer.AddBlock(renderLayer, def, flag2, SimHashes.Void, num);
}
}
}
}
}
if (lastCell != num)
{
lastCell = num;
}
}
}