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The Ultimate Multiplayer Husbandry System (UMHS) is a complete animal husbandry and lifecycle system: ownership, feeding, breeding with inherited genetics, pregnancy, aging through life stages, production schedules (milk, eggs, wool, manure), animal health, pastures, shelter, slaughter with butchering outputs, and offline catch-up simulation. It’s fully replicated and server authoritative, data-driven via Data Assets, with soft integration hooks for any inventory, skill, time, or weather system. Animals using this plugin are assumed already tamed — taming itself is handled by the standalone Taming System (or any other upstream system), which hands off here once domestication completes.

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Key Features

  • Ownership — stable per-player ownership identity via SetOwnerPlayer / ReleaseOwnership
  • Feeding & watering — hunger/thirst needs with starvation and dehydration consequences
  • Breeding — fertility rolls, gestation, litters, breeding cooldowns, optional auto-breeding
  • Genetics — tag-keyed inherited traits (growth, yield, fertility, hardiness) with mutation, plus cosmetic variants
  • Pregnancy & offspring — offspring actors spawn with blended genetics and persist through saves
  • Aging — data-driven life stages with per-stage meshes, smooth growth scaling, and optional old-age death
  • Products — milk, eggs, wool, manure on per-species schedules; collect by interaction, or use SpawnPickup to drop a physical actor per unit, with a live-count cap that bounds offline catch-up
  • Animal health — sickness from neglect and dirty pastures, medicine, natural recovery
  • Pastures — capacity by species footprint, feed/water troughs, cleanliness, manure collection
  • Shelter — shelter slots with an overridable query to wire any building system
  • Slaughter & butchering — stage/health/genetics-scaled outputs through inventory hooks
  • Offline simulation — all state is timestamped; worlds catch up correctly after any downtime

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Architecture

  • UAnimalComponent — attach to any replicated actor; owns all per-animal state (five replicated structs)
  • UPastureComponent — attach to any actor to define a pasture
  • UUMHSPlayerComponent — attach to your PlayerController or pawn; routes client interactions to the server
  • UAnimalSpeciesDefinition — one Primary Data Asset per species drives every rule
  • UUMHSSubsystem — world clock, hourly simulation fan-out, offspring spawning
  • UUMHSSaveHandler — save/load bridge (UMI save registry when present; standalone byte APIs otherwise)
  • UUMHSGeneticsLibrary — inheritance math and Blueprint helpers

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Multiplayer

Fully server authoritative. Every mutator no-ops without authority; clients call UUMHSPlayerComponent’s Server_* RPCs (validated server-side, including a range check). Clients react through replicated state and BlueprintAssignable events.

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Integration

UMHS has zero hard dependencies on other plugins:
  • Taming: receives domesticated creatures from the Taming System hand-off (or any other upstream system)
  • Time: binds to a TimeManager-style world time subsystem via reflection when present; otherwise runs its own clock
  • Weather: mirrors temperature from a WorldClimate-style subsystem via reflection for comfort/exposure rules
  • Inventory / Skills / Interaction: override BlueprintNativeEvent hooks (OnConsumeFeedItem, OnGrantItems, OnAwardHusbandryXP, GetInteractionPrompt, …) on the components
  • Saves: with UMI installed, animals and pastures save automatically through the save registry; without it, use RequestSaveData / ApplyLoadData and the OnGetSaveData / OnLoadSaveData delegates

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Quick Start

  1. Enable the plugin and create an AnimalSpeciesDefinition asset (e.g. a cow: life stages Baby/Juvenile/Adult, a Milk product, butcher outputs)
  2. Place an AUMHSExampleAnimal (or add UAnimalComponent to your own animal actor) and set its Species
  3. Add UUMHSPlayerComponent to your PlayerController
  4. Optionally place an AUMHSExamplePasture and stock its troughs
  5. Test with console commands: umhs.AdvanceHours 24, umhs.DumpAnimals