private static bool TryGetHybrids(StatRequest req, out IEnumerable <HybridDef> hybridDefs)
{
if (AnimalGroupDef.TryGetGroups(req, out var groups))
{
hybridDefs = groups.Select(a => HybridDef.TryGetHybrids(a, out var h) ? h : null).Where(h => h != null)
.SelectMany(x => x).Select(h => h.Value).SelectMany(x => x).Distinct();
return(true);
}
hybridDefs = default;
return(false);
}
public static bool Guard_Hediff_AnimalFertilityReduced(Pawn male, Pawn female)
{
if (
HybridDef.TryGetHybrids(male.kindDef, female.kindDef, out var hybridList) &&
hybridList.TryGetRandomElement(out var hybrid) &&
hybrid.fertilizationFailesIfGreaterThanZeroCurve.TryGetRandomValue(
out var fertilizationFailesIfGreaterThanZero) &&
fertilizationFailesIfGreaterThanZero >= 0f
)
{
DogsMateMod.Debug(
$"fertilizationFailesIfGreaterThanZero: {fertilizationFailesIfGreaterThanZero:0.000}, " +
"failed"
);
return(true);
}
var maleHediff = SeverityOf(male);
var femaleHediff = SeverityOf(female);
if (maleHediff <= 0f && femaleHediff <= 0f)
{
return(true);
}
if (maleHediff >= 1f || femaleHediff >= 1f)
{
DogsMateMod.Debug(
$"male fertility: {(1f - maleHediff) * 100:0.0}%, " +
$"female fertility: {(1f - femaleHediff) * 100:0.0}%, " +
"can't fertilize"
);
return(false);
}
var threshold =
Mathf.Sqrt((1f - maleHediff) * (1f - femaleHediff) * (1f - Mathf.Max(maleHediff, femaleHediff)));
DogsMateMod.Debug(
$"male fertility: {(1f - maleHediff) * 100:0.0}%, " +
$"female fertility: {(1f - femaleHediff) * 100:0.0}%, " +
$"fertilation chance: {threshold * 50:0.0}%" // RimWorld lets every other fertilation fail.
);
var value = Rand.Value;
return(value <= threshold);
}
public override bool ShouldShowFor(StatRequest req)
{
return(AnimalGroupDef.TryGetGroups(req, out var groups) &&
groups.Any(a => HybridDef.TryGetHybrids(a, out _)));
}