Night events

NeoForge 26.1.2 and 1.21.1.

Something that happens on a night, beside (or instead of) its moon: a feast, a raid, a siege. One runs at a time per world. They're rolled at dusk after the moon, or raised by code or command.

File: data/<ns>/fundamentum/night_events/<name>.json. The id is <ns>:<name>. Every field is optional.

{
  "chance": 0.1,
  "priority": 0,
  "dimension": "minecraft:overworld",
  "requires": ["mymod:dragon_slain"],
  "excludes": ["mymod:peace_treaty"],
  "min_day": 5,
  "cooldown": 3,
  "with_moon": true,
  "moons": ["mymod:harvest"],
  "not_moons": ["mymod:blood"],
  "duration": 0,
  "fog": {"color": "#C08040", "strength": 0.3},
  "sky": {"color": "#C08040", "strength": 0.15},
  "title": {"title": "event.mymod.feast", "subtitle": "event.mymod.feast.sub", "color": "fog"},
  "start_message": "message.mymod.feast",
  "start_sound": "mymod:feast_bell",
  "end_message": "message.mymod.feast_over",
  "end_sound": ""
}

Field	Default	Meaning
chance	0	per eligible night; 0 means only when raised by code or command
priority	0	rolled from the highest priority down; the first that happens wins
dimension	minecraft:overworld
requires / excludes	none	world flags that must all be set / all be unset
min_day	0	not before this day
cooldown	0	nights after it last happened before it can roll again
with_moon	true	false: never on a night with a special moon
moons / not_moons	any / none	only with these moons / never with these
duration	0	ticks it lasts once started; 0 is dusk to dawn
fog / sky	none	tints, laid over the moon's
title	none	a title on screen when it starts: a lang key, or {"title", "subtitle", "color"}
start_message / end_message	none	as a moon's rise_message
start_sound / end_sound	none	as a moon's rise_sound

Ostentum's Pillager Siege is a night event; its waves are code that reads this event. Test with /fundamentum event raise <id>, clear and query (see Commands).