ExtendedRaceProperties - Vanilla-Expanded/VanillaExpandedFramework GitHub Wiki
ExtendedRaceProperties makes animals Diurnal (default), Nocturnal or Crepuscular.
public BodyClock bodyClock; //(values can be Diurnal (default), Nocturnal or Crepuscular
Diurnal animals (default ingame): active from 7 AM to 21 PM
Nocturnal animals: active from 19 PM to 9 AM
Crepuscular animals: active from 3 AM to 16 PM
As an example, this patch makes the Nightram in Alpha Animals nocturnal
<Operation Class="PatchOperationAddModExtension">
<xpath>/Defs/ThingDef[defName="AA_NightRam"]</xpath>
<value>
<li Class="VEF.AnimalBehaviours.ExtendedRaceProperties">
<bodyClock>Nocturnal</bodyClock>
</li>
</value>
</Operation>