private static CreateItemResult ExecuteSpawnItem(
DropItem dropItem,
DelegateSpawnDropItem delegateSpawnDropItem,
double probability)
{
probability *= DropListItemsCountMultiplier;
if (!RandomHelper.RollWithProbability(probability))
{
return(new CreateItemResult()
{
IsEverythingCreated = true
});
}
var countToSpawn = dropItem.Count
+ RandomHelper.Next(minValue: 0,
maxValueExclusive: dropItem.CountRandom + 1);
if (countToSpawn <= 0)
{
// nothing to spawn this time
return(new CreateItemResult()
{
IsEverythingCreated = true
});
}
if (probability > 1)
{
var multiplier = probability;
countToSpawn = (int)Math.Round(countToSpawn * multiplier,
MidpointRounding.AwayFromZero);
}
if (countToSpawn <= 0)
{
return(new CreateItemResult()
{
IsEverythingCreated = true
});
}
if (countToSpawn > ushort.MaxValue)
{
countToSpawn = ushort.MaxValue;
}
return(delegateSpawnDropItem(dropItem.ProtoItem, (ushort)countToSpawn));
}
private static CreateItemResult ExecuteSpawnItem(
DropItem dropItem,
DelegateSpawnDropItem delegateSpawnDropItem,
double probability)
{
var countToSpawn = dropItem.Count + RandomHelper.Next(0, dropItem.CountRandom + 1);
if (countToSpawn <= 0)
{
return(new CreateItemResult()
{
IsEverythingCreated = true
});
}
// apply probability
probability = MathHelper.Clamp(probability, 0, 1);
if (probability < 1)
{
var countToSpawnFloat = countToSpawn * probability;
if (countToSpawnFloat > 1)
{
countToSpawn = (int)Math.Round(RandomHelper.NextDouble() * countToSpawnFloat,
MidpointRounding.AwayFromZero);
}
else
{
// cannot spawn even 1 item... so let's roll and try spawn exactly 1 item
// TODO: not sure if we're using the probability correctly here
countToSpawn = RandomHelper.RollWithProbability(probability)
? 1
: 0;
}
}
if (countToSpawn <= 0)
{
return(new CreateItemResult()
{
IsEverythingCreated = true
});
}
if (countToSpawn > ushort.MaxValue)
{
countToSpawn = ushort.MaxValue;
}
return(delegateSpawnDropItem(dropItem.ProtoItem, (ushort)countToSpawn));
}
/// <summary>
/// Add item to the droplist.
/// </summary>
/// <param name="protoItem">Item prototype instance.</param>
/// <param name="count">Minimal amount to spawn (if spawning/adding occurs).</param>
/// <param name="countRandom">
/// Additional amount to spawn (value selected randomly from 0 to the specified max value
/// (inclusive) when spawning).
/// </param>
/// <param name="weight">
/// Weight of this item in the droplist (higher weight in comparison to other entries - higher chance
/// to spawn).
/// </param>
/// <param name="condition">(optional) Special condition.</param>
public DropItemsList Add(
IProtoItem protoItem,
ushort count = 1,
ushort countRandom = 0,
double weight = 1,
double probability = 1,
DropItemConditionDelegate condition = null)
{
var dropItem = new DropItem(protoItem, count, countRandom);
this.entries.Add(new ValueWithWeight <Entry>(
new Entry(dropItem, condition, probability),
weight));
return(this);
}
public Entry(DropItem dropEntryItem, DropItemConditionDelegate condition, double probability)
: this(condition, probability)
{
this.EntryItem = dropEntryItem;
}