Function: tetris-default-update-speed-function
tetris-default-update-speed-function is a byte-compiled function
defined in tetris.el.gz.
Signature
(tetris-default-update-speed-function SHAPES ROWS)
Source Code
;; Defined in /usr/src/emacs/lisp/play/tetris.el.gz
(defun tetris-default-update-speed-function (_shapes rows)
(/ 20.0 (+ 50.0 rows)))