snowfall-core visual novella engine

early development stage

• scroll as book
• paged as typical VN — snowfall-paged.js is the controller: one page is a screenful of the author's own portions (cut at p / section / br), the page ends at the last stop that fits and the text you have read leaves the page; a portion taller than the screen is its own page, walked one band a tap; the scrollbar is hidden while native scrolling remains available for tall portions; short pages can align at the top or bottom of the reading band. Reader mode, page and in-page progress are autosaved alongside game state, and style/background state is derived directly from the restored source position; 0.6.0-plan-paged-mode.md is the plan, demo-paged.html the playable page with a book/paged toggle
• without js fallback to readable html
• compatible with epub syntax for easy convert
• minigames as one .js file plus an optional .css — games/gamble.js is the example, archive/0.4.3-plan-minigames.md the contract, demo-minigame.html the playable page

No strict syntax, don't force author to write in specific notation - just place backgrounds and scripts in text.

Vanilla js, no build, no server need, possible to bundle into single html file and open with double click.

engine repo https://github.com/luncat8/snowfall-core.git

Region layout follows the HD-region reference (https://github.com/luncat8/HD-region.git): test/vendor/hdregion-ref.js is a pinned copy of its math and test/region-parity.js holds the two in agreement to 1e-6, on that repo's own example scenes in img/.