Bunnyland Spectersim

Out-of-tree Bunnyland plugin that adds paranormal monster-detecting devices. A device makes noise (a wail, a hiss, a buzz, a hum, a beep…) whose volume rises when entities carrying a particular marker component share its room. Two variants ship out of the box:

• Ghost detector — reacts to SpectralMarkerComponent (monsters, spirits, the undead).
• Radio — reacts to RadioSourceMarkerComponent (transmitters, beacons, broadcasters).

v2 bundles two survival-horror mechanics on top of the detectors:

• Sanity — a dread meter (SanityComponent) that drains near spectral presences and in the dark, recovers in safe or bright spirit-free rooms, and injects escalating first-person distortion lines ("Your hands won't stop shaking.", whispering, a hallucinated presence) into the afflicted character's own prompt.
• Rituals & wards — draw-ward protects a room and perform-ritual channels a held ritual kit to weaken and finally banish a spectral presence; a warded room also erodes any trapped presence passively.

v3 bundles two more:

• EVP / evidence log — the log-reading verb captures eerie proof of a haunting (EVP recordings, cold spots, orb sightings, detector spikes) into an investigator's private EvidenceLogComponent, recordable only when a spectral presence or a reacting detector is actually present. Evidence content is deterministic, and prompt fragments tally the log ("Your evidence log holds 3 EVP captures.").
• Fog — a FogComponent on rooms whose density drifts and thickens over time (thicker at night and in spectral-heavy rooms) and shrinks perception, so a fog-bound character sees fewer entities and loses sight of the exits.

This repo intentionally keeps all detector work outside the main bunnyland-server repo.

Layout

• server/ - Python Bunnyland plugin package with the marker/detector components, the detection consequence, prompt fragments, a worldgen enrichment hook, the two player/AI verbs, spawn factories, and tests.

Server Plugin

The plugin exposes bunnyland_spectersim.bunnyland_plugins() and contributes:

• SpectralMarkerComponent, RadioSourceMarkerComponent - detectable markers.
• GhostDetectorComponent, RadioDetectorComponent - the devices.
• DetectionConsequence - sets each detector's volume from same-room markers every tick and pulses a NoiseComponent so the device is audible via the server's existing hearing pipeline. Works for held and floor-resting detectors, as long as they are powered on.
• spectersim_fragments - renders device state into both human and AI prompts.
• SpecterWorldgenHook - tags generated enemies (and broadcasters) with the markers.
• power-detector and set-detector-volume - verbs for the holder (human or AI).
• spawn_ghost_detector, spawn_radio - spawn factories.

v2 additionally contributes:

• SanityComponent and SanityConsequence - the per-tick dread meter, with band-crossing SanityChangedEvents and first-person sanity_fragments.
• WardComponent, RitualKitComponent, and WardConsequence - room protection plus the passive weaken/banish pass, with WardDrawnEvent, PresenceWeakenedEvent, and PresenceBanishedEvent.
• draw-ward and perform-ritual - verbs for placing wards and banishing presences.
• ritual_fragments - renders ward protection and the held-kit line into prompts.
• spawn_ritual_kit, spawn_ward - spawn factories.
• Optional Bunnyland 3D integration gives wards an emissive model with a restrained, strength-compatible spectral aura anchored to the ward focus.

v3 additionally contributes:

• EvidenceComponent, EvidenceLogComponent, and the log-reading verb - capturing and reviewing spectral evidence into an investigator's private log, with EvidenceRecordedEvent and first-person evidence_fragments.
• FogComponent and FogConsequence - drifting/thickening room fog with FogChangedEvents; perceive_through_fog shrinks the core perception projection and fog_fragments describe the murk.
• spawn_recorder - spawn factory for an EVP recorder.

Running

This package builds no containers. It is loaded into the stock server via --module:

bunnyland serve --module bunnyland_spectersim

default_enabled=True, so no --plugin flag is required once the module is imported. The bunnyland_spectersim package must be importable by the server (installed into the server's environment, or on PYTHONPATH).

Development

Run server tests against a sibling bunnyland-server checkout (no install required — server/tests/conftest.py puts both packages on sys.path). From server/:

uv run --project ../../bunnyland-server -m pytest
uv run --project ../../bunnyland-server ruff check src tests

See server/README.md for more detail.

Contributing & Conduct

This plugin follows the Bunnyland project's contribution guidelines and code of conduct, which point back to the bunnyland-server repository.

License

Licensed under the GNU Affero General Public License v3.0. See LICENSE.