public static bool TryParse(string text, out GameObjectInstance instance)
{
// TODO: find an existing GameObject with the same name before creating one;
// parsing the output of GameObjectInstance.ToString() will require converting pluralized names back to singular;
// We might only be able to parse well-structured plurals, as in "N singular-name" or "singular-name (xN)".
// ToString() could emit well-structured plurals and leave conversational formatting up to the client,
// or it could have a pluralization format parameter, knowing that reverse-parsing conversational plurals will not work.
char[] blank = { ' ' };
string[] tokens = text.Trim().Split(blank, StringSplitOptions.RemoveEmptyEntries);
int count;
if (tokens.Length > 1 && int.TryParse(tokens[0], out count))
{
string name = text.Trim().Substring(tokens[0].Length).Trim();
GameObject obj = new GameObject(name);
instance = new GameObjectInstance(obj, count);
return(true);
}
else
{
instance = null;
return(false);
}
}
private void GameObjectInstanceWriteXml(GameObjectInstance obj)
{
writer.WriteStartElement("Instance");
Utility.WriteAttribute(writer, "Count", obj.Count, 1);
GameObjectWriteXml(obj.Item);
SaveObject(obj.Contents, "Contains");
writer.WriteEndElement();
}
private GameObjectInstance GameObjectInstanceFromXml(XmlNode node)
{
GameObjectInstance obj = new GameObjectInstance();
obj.Count = Utility.ParseAttribute(node, "Count", 1);
obj.Item = GameObjectFromXml(node.SelectSingleNode("GameObject"));
obj.Contents = ItemListFromXml(node.SelectSingleNode("Contains"));
return(obj);
}
/// <summary>
/// Performs a die roll to generate one or more IResolvers from Item
/// </summary>
/// <returns></returns>
public IResolver Roll()
{
//GameObjectInstance result = new GameObjectInstance(Item, Dice.Roll() * Multiplier);
if (Item is GameObject)
{
GameObjectInstance item = new GameObjectInstance((GameObject)Item, Dice.Roll() * Multiplier);
Logger.Write("... rolled " + item.ToString());
return(item);
}
else if (Item is TableRoll && IsGrouped)
{
// Number of dice in Dice determines number of TableRolls performed.
// Dice rolled with a single die determines number of occurrences of each TableRoll results.
// e.g. if Dice = 4d10+2, 4 TableRolls are performed, and d10+2 is rolled to determine number of occurrences of each result.
TableRoll t = (TableRoll)Item;
Logger.Write("... performing " + Dice.Dice.ToString() + " rolls on " + t.Table.TableName);
ItemList list = new ItemList();
DieRoll singleRoll = new DieRoll(1, Dice.Sides, Dice.Modifier);
for (int i = 0; i < Dice.Dice; i++)
{
IResolver item = Item.Resolve();
if (item != null)
{
int count = singleRoll.Roll();
Logger.Write("... occurring " + count + " times");
for (int j = 0; j < count; j++)
{
list.Add(item);
}
}
}
return(list);
}
else
{
ItemList list = new ItemList();
int count = Dice.Roll() * Multiplier;
Logger.Write("... rolled " + Dice.ToString() + ": " + count.ToString());
for (int i = 0; i < count; i++)
{
list.Add(Item.Resolve());
}
return(list);
}
}
public IResolver Resolve()
{
Logger.Write("Resolve GameObject: " + Name);
GameObjectInstance instance = new GameObjectInstance(this, 1);
if (this.Contents == null)
{
instance.Contents = null;
}
else
{
instance.Contents = new ItemList();
instance.Contents = (ItemList)(this.Contents.Resolve());
}
return(instance);
}
//public int CompareTo(object other)
//{
// if (other == null)
// {
// return 1;
// }
// else
// {
// return String.Compare(this.ToString(), other.ToString());
// }
//}
public int CompareTo(object other)
{
if (other == null)
{
return(1);
}
else
{
if (other is GameObjectInstance)
{
GameObjectInstance otherInstance = (GameObjectInstance)other;
if (this.Item.Name == otherInstance.Item.Name)
{
return(this.Count.CompareTo(otherInstance.Count));
}
else
{
return(this.Item.Name.CompareTo(otherInstance.Item.Name));
}
}
else if (other is GameObject)
{
string otherName = other.ToString();
if (this.Item.Name == otherName)
{
return(this.Count.CompareTo(1));
}
else
{
return(this.Item.Name.CompareTo(otherName));
}
}
else
{
return(String.Compare(this.ToString(), other.ToString()));
}
}
}
/// <summary>
/// Convert a text string to an IResolver
/// </summary>
/// <param name="itemText"></param>
/// <returns></returns>
public static IResolver ParseItem(string itemText)
{
char[] comma = { ',' };
char[] blank = { ' ' };
// if the item is a comma-separated list, parse it as an ItemList
string[] items = itemText.Split(comma, StringSplitOptions.RemoveEmptyEntries);
if (items.Length > 1)
{
ItemList itemList = new ItemList();
foreach (string item in items)
{
IResolver obj = ParseItem(item);
if (obj != null)
{
itemList.Add(obj);
}
}
return(itemList);
}
// parse an individual item
else if (items.Length == 1)
{
DieRoll dieRoll;
GameObject gameObject;
string item = items[0];
// ItemRoll
string[] tokens = item.Split(blank, StringSplitOptions.RemoveEmptyEntries);
if (DieRoll.TryParse(tokens[0], out dieRoll))
{
string theRest = item.Substring(tokens[0].Length).Trim();
if (GameObject.TryParse(theRest, out gameObject))
{
return(new ItemRoll(gameObject, dieRoll));
}
}
// GameObjectInstance
GameObjectInstance gameObjectInstance;
if (GameObjectInstance.TryParse(item, out gameObjectInstance))
{
return(gameObjectInstance);
}
// TableRoll
if (item.ToLower().StartsWith("roll"))
{
TableRoll tableRoll;
if (TableRoll.TryParse(item.Remove(0, 5), out tableRoll))
{
return(tableRoll);
}
}
// GameObject
if (GameObject.TryParse(item, out gameObject))
{
return(gameObject);
}
}
return(null);
}