TriggerOnceIfNot

A one-shot trigger that fires only when the player does not possess the specified flag or item. Once it fires it removes itself, so it will never fire again.

Typical use: gate a warning or event on the player lacking a required prerequisite — e.g. display a reminder message until the player picks up the required item, at which point the trigger is gone and never interrupts them again.

Constructor

new TriggerOnceIfNot(terrain, test, color, message)

Source:

pieces/terrain/triggers.js, line 338

Parameters:

Name	Type	Description
`terrain`	Terrain	The underlying terrain this decorator wraps.
`test`	string	Flag name or item name whose absence allows the trigger to fire.
`color`	Color	Color event broadcast to the board on firing.
`message`	string \| null	Optional modal message shown to the player.