Module tip 

One-time contextual tips: what triggers each and what it says. The game’s own type names its triggers; its screens decide when one has happened and remember which tips were seen. A tip’s text names keys with placeholders ({Confirm}), filled in with the player’s keys when shown. A tip may keep its instructions apart from its text (how): a game whose tips are spoken by a recorded voice keeps the keys there, since a clip made ahead of time can’t say a key the player rebound.

Structs

Tip

One tip; T is the game’s triggers.

TipLimits

How much text a tip’s box holds, in cells.

TipRules

What from_source checks tips against besides their box: which placeholders exist, and what is wrong with a tip’s face.

TipTable

Every tip, in file order.

Functions

from_source

Parses and validates tips source, attributing errors to file: ids are lowercase and used once, a trigger has one tip, the title and text fit rules’ box, every placeholder is one of the game’s and every face is fine by the game. Reports every problem found.

placeholders

The names between braces in text, in order ({Confirm} gives Confirm). An unclosed { is ignored.