/// <summary>
/// Gets the thing with the specified parameters or
/// null if such a thing can't be found. Note: The thing
/// must be visible for the player.
/// </summary>
/// <param name="player">The player for whom to get the item.</param>
/// <param name="pos">The position of the item.</param>
/// <param name="stackpos">The stackposition of the thing.</param>
/// <param name="usePosZ">Use position.z for index instead of stackpos.</param>
/// <returns>The thing or null if can't be found.</returns>
public Thing GetThing(Player player, Position pos, byte stackpos, bool usePosZ)
{
//container/inventory
if (CarryingPos(pos)) {
if (ContainerPos(pos)) { //From container
int containerIndex = pos.y - CONTAINER_HEADER;
int itemIndex = usePosZ ? pos.z : stackpos;
Container container = player.GetContainerByIndex(containerIndex);
if (container == null) {
return null;
}
return container.GetItemByIndex(itemIndex);
} else { //inventory
return player.GetInventoryItem((byte)pos.y);
}
} else if (player.CanSee(pos)) { //ground
if (stackpos == Constants.STACKPOS_TOP_ITEM) {
return map.GetTopThing(pos);
} else {
Tile tile = map.GetTile(pos);
if (tile == null) {
return null;
}
return tile.GetThing(stackpos);
}
}
return null;
}