An SVG.js app.
Models: Cell, Grid, Selection, Line (special rule illustrations)
View: Cell, Grid, Controls
Controller: Game
Cells know when they are acted on.
Cells know their neighbors.
A Selection is a collection of cells with colored border.
Grid has state.
- focus: Cell under cursor
- selected: cells in selection list
Cell has state.
- selected
Ways of entering numbers:
- pencil
number[]: maybes - value
number: definitely / answer - fixed
number: puzzle setup
Rule evaluation goes rows, columns, blocks.