void CheckTileRemoval()
{
Collider2D col;
if (col = Physics2D.OverlapPoint(mousePos, roomLayer))
{
Vector2 center = col.gameObject.transform.position;
RoomGrid rg = col.gameObject.GetComponent <RoomGrid>();
Rect eraseRect = new Rect(mousePos.x, mousePos.y, 25, 25);
rg.EraseBlock(eraseRect, selectedItemTab, center);
}
}