diff options
| -rw-r--r-- | AoC2022/14/solver.el | 46 |
1 files changed, 39 insertions, 7 deletions
diff --git a/AoC2022/14/solver.el b/AoC2022/14/solver.el index bd0464f..a5cc896 100644 --- a/AoC2022/14/solver.el +++ b/AoC2022/14/solver.el @@ -14,6 +14,7 @@ ;;; Code: (require 'seq) +(require 'subr-x) (defun solver-bounds (str-or-buffer) (with-temp-buffer @@ -36,7 +37,7 @@ (x-len (1+ (- (car bounds) (cadr bounds)))) (y-len (1+ (elt bounds 2))) (stride (* 8 (1+ (/ x-len 8)))) - (grid (make-bool-vector (* stride y-len) nil)))) + (grid (make-vector (* stride y-len) 0)))) (:copier nil)) "Represents a snapshot of game of life." bounds @@ -59,9 +60,9 @@ (unless (null startx) (if (= startx fx) (cl-loop for y from (min starty fy) to (max starty fy) - do (aset (grid-grid grid) (solver-point startx y grid) t)) + do (aset (grid-grid grid) (solver-point startx y grid) 1)) (cl-loop for x from (min startx fx) to (max startx fx) - do (aset (grid-grid grid) (solver-point x starty grid) t)))) + do (aset (grid-grid grid) (solver-point x starty grid) 1)))) (setq startx fx starty fy))))) @@ -96,6 +97,19 @@ :background "#000000" ))) +(defun solver-draw-grid (grid) + (let ((stride (grid-stride grid))) + (seq-do-indexed + (lambda (elt idx) + (let ((slot (mod idx stride))) + (when (= 0 slot) + (insert "\n")) + (insert (cl-case elt + (0 ".") + (1 "#") + (2 "o"))))) + (grid-grid grid)))) + (solver-walls "498,4 -> 498,6 -> 496,6 503,4 -> 502,4 -> 502,9 -> 494,9" @@ -106,8 +120,26 @@ (let* ((instr "498,4 -> 498,6 -> 496,6 503,4 -> 502,4 -> 502,9 -> 494,9") (bounds (solver-bounds instr)) - (grid (solver-grid-create bounds))) + (grid (solver-grid-create bounds)) + (drops 0)) (solver-walls instr grid) - (thread-first - (solver-draw-wall grid) - (insert-image))) + ;; (thread-first + ;; (solver-draw-wall grid) + ;; (insert-image)) + + grid + ;; sim + (named-let loop ((x 500) + (y 0)) + + (ignore-error 'wrong-type-argument ;; went out of grid + (cond + ((= 0 (aref (grid-grid grid) (solver-point x (1+ y) grid))) (loop x (1+ y))) ;; check next + ((= 0 (aref (grid-grid grid) (solver-point (1- x) (1+ y) grid))) (loop (1- x) (1+ y))) ;; check left + ((= 0 (aref (grid-grid grid) (solver-point (1+ x) (1+ y) grid))) (loop (1+ x) (1+ y))) ;; check right + (t (aset (grid-grid grid) (solver-point x y grid) 2) + (cl-incf drops) + (loop 500 0))))) + (solver-draw-grid grid) + drops + ) |