public TCell this[int x, int y]
{
get
{
CheckLocation(ref x, ref y);
TGridBlock block = null;
ShortPoint blockLocation = default(ShortPoint);
int cellX, cellY;
int blockSize = BlockSize;
GridBlock.GetBlockCellLocation(ref x, ref y, ref blockSize, out blockLocation, out cellX, out cellY);
if (Blocks.TryGetItem(blockLocation, out block))
{
return(block.GetCell(cellX, cellY));
}
return(default(TCell));
}
set
{
CheckLocation(ref x, ref y);
TGridBlock block = null;
ShortPoint blockLocation = default(ShortPoint);
int tileX, tileY;
int blockSize = BlockSize;
GridBlock.GetBlockCellLocation(ref x, ref y, ref blockSize, out blockLocation, out tileX, out tileY);
if (!Blocks.TryGetItem(blockLocation, out block))
{
if (CellEqualityComparer.Equals(value, default(TCell)))
{
return;
}
block = CreateBlock(blockLocation);
AddBlock(block);
}
var currentValue = block.GetCell(tileX, tileY);
if (block.SetCell(tileX, tileY, value))
{
OnCellContentChanged(tileX, tileY, block, currentValue, value);
}
}
}
