public static void Modify(ItemPropertyModifier source, ref double targetValue)
{
if (!source.HasValue)
{
return;
}
switch (source._formula)
{
// mod & inverse
case AggregateFormula.Modifier:
case AggregateFormula.Inverse:
{
targetValue *= source.Value;
break;
}
// add
case AggregateFormula.Add:
{
targetValue += source.Value;
break;
}
default:
throw new ArgumentOutOfRangeException();
}
}
public ItemPropertyModifier GetPropertyModifier(AggregateField field)
{
if (TryGetPropertyModifier(field, out ItemPropertyModifier m))
{
return(m);
}
return(ItemPropertyModifier.Create(field));
}
public void Init()
{
_modifiers = Db.Query().CommandText("select * from aggregatevalues").Execute().ToLookup(r => r.GetValue <int>("definition"), r =>
{
var field = r.GetValue <AggregateField>("field");
var value = r.GetValue <double>("value");
return(ItemPropertyModifier.Create(field, value));
});
}
static DefaultItemPropertyModifiers()
{
_defaultProperties = Database.CreateLookupCache <int, ItemPropertyModifier>("aggregatevalues", "definition", r =>
{
var field = r.GetValue <AggregateField>("field");
var value = r.GetValue <double>("value");
return(ItemPropertyModifier.Create(field, value));
});
}
public static ItemPropertyModifier Modify(ItemPropertyModifier source, ItemPropertyModifier target)
{
if (!source.HasValue)
{
return(target);
}
var v = target.Value;
Modify(source, ref v);
return(new ItemPropertyModifier(target.Field, target._formula, v));
}
public static void Modify(ItemPropertyModifier source, ref ItemPropertyModifier targetModifier)
{
targetModifier = Modify(source, targetModifier);
}
public void Modify(ref ItemPropertyModifier targetModifier)
{
Modify(this, ref targetModifier);
}
public bool TryGetPropertyModifier(AggregateField field, out ItemPropertyModifier modifier)
{
return(_modifiers.TryGetValue(field, out modifier));
}
public static IPropertyModifierCollection Combine(this IPropertyModifierCollection source, IPropertyModifierCollection target)
{
var x = source.All.Select(s => ItemPropertyModifier.Modify(s, target.GetPropertyModifier(s.Field)));
return(new PropertyModifierCollection(x));
}
public ItemPropertyModifier ToPropertyModifier()
{
return(ItemPropertyModifier.Create(Field, Value));
}