/// <summary>
/// Returns item at given position.
/// </summary>
/// <param name="position">The position to get item for.</param>
/// <returns>The requested item if found, otherwise null.</returns>
public ISquareMapItemElement GetItem(Position position)
{
ISquareMapItemElement item = null;
if (position.IsInBoundary(this.boundary))
{
lock (this.items)
{
item = this.items[position];
}
}
return item;
}
/// <summary>
/// Tries to get item at given position.
/// </summary>
/// <param name="position">The position to get item for.</param>
/// <param name="item">The item instance.</param>
/// <returns>True if retrieval was successful, otherwise false.</returns>
public bool TryGetItem(Position position, out ISquareMapItemElement item)
{
item = null;
return position.IsInBoundary(this.boundary) && this.items.TryGetValue(position, out item);
}
/// <summary>
/// Checks whether an item exists on given position at map.
/// </summary>
/// <param name="position">The position to check item exitance for.</param>
/// <returns>True if item exists, otherwise false.</returns>
public bool ContainsItem(Position position)
{
return position.IsInBoundary(this.boundary) && this.items.ContainsKey(position);
}