The board is a list of 200 numbers now instead of 200 characters, so a cell is
Item at and a landing is Set item instead of seven nodes of string surgery.
The bigger change is that the one 219-node graph is gone. Each step of a frame is
a behavior of its own - Spawn piece, Next move, Fits, Draw piece, Lock piece,
Clear lines, Show lines, Draw board, plus Piece cell for where one of the four
cells of a piece sits. None of them holds state: what they need arrives through
their inputs, every answer leaves through their outputs. That is what lets Fits
answer for turning, moving and falling alike, and Piece cell serve the fit test,
the drawing and the landing instead of being the same twenty nodes three times.
Tetris itself is down to 84 nodes and only says in which order the steps run and
which variable each answer lands in. The smoke test holds it to that: it fails if
a loop or a list access reappears in the master graph.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
