/// <summary>
/// Overrides equality operators to compare by Id.
/// </summary>
public override bool Equals(Object obj)
{
if (!(obj is ExtraDropItem))
{
return(false);
}
ExtraDropItem other = (ExtraDropItem)obj;
return(Id == other.Id);
}
/// <summary>
/// Adds a drop item to the entry and returns it.
/// </summary>
/// <param name="id">The id of the item to drop.</param>
/// <param name="probability">The probability of dropping the item.</param>
/// <returns>The added item.</returns>
public ExtraDropItem AddItem(uint id, float probability)
{
// Based on the EXTRADROPTABLE.h struct that Teemo Cell extracted, there can only be 256 items.
if (DropItems.Count >= 256)
{
throw new System.OverflowException("Too many items in entry");
}
ExtraDropItem item = new ExtraDropItem(id, probability);
DropItems.Add(item);
return item;
}
/// <summary>
/// Returns the index of the item with the given item id. If such an item does not exist, -1 is returned.
/// Includes an offsets to begin the search at.
/// </summary>
/// <param name="itemId">The item id to search for.</param>
/// <param name="offset">Only search items with index >= this offset.</param>
/// <returns>Index of the item with an id of itemId or -1 if such an item does not exist.</returns>
public int FindItem(uint itemId, int offset)
{
// Since Items are considered equivalent if the Id matches, we will create a template item with only the id.
ExtraDropItem search = new ExtraDropItem(itemId, 0.0f);
List<ExtraDropItem> offsetItems = DropItems.Skip(offset).ToList();
int index = offsetItems.IndexOf(search);
if (index == -1)
{
return -1;
}
return index + offset;
}
/// <summary>
/// Serialize to an output stream.
/// </summary>
/// <param name="output">The output stream to serialize to.</param>
public void Serialize(Stream output)
{
BinaryWriter writer = new BinaryWriter(output);
// Serialize monsters.
writer.Write(Monsters.Count);
for (int i = 0; i < Monsters.Count; ++i)
{
writer.Write(Monsters[i]);
}
// Serialize items. There must always be exactly 256 items according to the EXTRADROPTABLE.h struct that
// Teemo Cell extracted from the gs, so we'll pad it with 0s to 256 items if there are less than 256 items.
for (int i = 0; i < 256; ++i)
{
if (i < DropItems.Count)
{
ExtraDropItem item = DropItems[i];
item.Serialize(output);
}
else
{
// Pad with 0s.
ExtraDropItem padding = new ExtraDropItem(0, 0.0f);
padding.Serialize(output);
}
}
// Serialize name by first converting it to bytes, so the encoding will be correct. We must also pad it up
// to 128 bytes if it isn't already.
byte[] nameBytes = Encoding.GetEncoding("GB18030").GetBytes(Name);
byte[] namePadded = new byte[128];
Array.Copy(nameBytes, namePadded, Math.Min(nameBytes.Length, 128));
writer.Write(namePadded);
// Serialize the type as an integer.
writer.Write((int) Type);
// Serialize the drop probabilities. There must always be exactly 8 probabilities, according to the
// EXTRADROPTABLE.h struct that Teemo Cell extracted from the gs.
for (int i = 0; i < 8; ++i)
{
writer.Write(_dropNumProbabilities[i]);
}
}
/// <summary>
/// Construct the entry by deserializing from a stream.
/// </summary>
/// <param name="input">The input stream to deserialize from.</param>
public ExtraDropEntry(Stream input)
{
BinaryReader reader = new BinaryReader(input);
// Deserialize monsters.
int numMonsters = reader.ReadInt32();
for (int i = 0; i < numMonsters; ++i)
{
int monsterId = reader.ReadInt32();
Monsters.Add(monsterId);
}
// Deserialize items. There must always be exactly 256 items based on the EXTRADROPTABLE.h struct that
// Teemo Cell extracted from the gs.
for (int i = 0; i < 256; ++i)
{
ExtraDropItem item = new ExtraDropItem(input);
// We'll only populate if the item id is non-zero, because an item id of zero actually represents no
// item. This makes it easier for us to add or remove items later. We simply pad up to 256 items
// when we save.
if (item.Id > 0)
{
DropItems.Add(item);
}
}
// Deserialize name. This is always 128 bytes based on the EXTRADROPTABLE.h struct that Teemo Cell extracted
// from the gs.
byte[] nameBytes = reader.ReadBytes(128);
SetName(nameBytes);
// Deserialize type.
int type = reader.ReadInt32();
SetType(type);
// Deserialize the drop num probabilities. There are always 8 probabilities based on the EXTRADROPTABLE.h
// struct that Teemo Cell extracted from the gs.
for (int i = 0; i < 8; ++i)
{
float probability = reader.ReadSingle();
_dropNumProbabilities[i] = probability;
}
}
/// <summary>
/// Constructs a new item by cloning an existing item.
/// </summary>
/// <param name="item">The item to clone.</param>
public ExtraDropItem(ExtraDropItem item)
{
Id = item.Id;
Probability = item.Probability;
}