@ -7,16 +7,16 @@ I am using [[https://www.michaelfogleman.com/rush/][Michael Fogleman's Rush Hour
* Database format
/(The following text is copied from [[https://www.michaelfogleman.com/rush/][Michael Fogleman's Rush Hour database]] ([[https://web.archive.org/web/20201101044241/https://www.michaelfogleman.com/rush/][archive.org]]), for easier reference)/
#+BEGIN_QUOTE
The database is a simple text file with just a few columns. There is one row for every valid (solvable, minimal) cluster. The columns are: # of moves, board description, and cluster size (# of reachable states).
The database is a simple text file with just a few columns. There is one row for every valid (solvable, minimal) cluster. The columns are: number of moves, board description, and cluster size (number of reachable states).
The board description is a 36-character string representing the state of the unsolved board. It is a 6x6 2D array in row-major order. The characters in the description follow these simple rules:
o empty cell
x wall (fixed obstacle)
A primary piece (red car)
B - Z all other pieces
- o empty cell
- x wall (fixed obstacle)
- A primary piece (red car)
- B - Z all other pieces
I used lowercase o instead of periods . for the empty cells in the database so that the entire board description can be selected with a double-click.
I used lowercase ~o~ instead of periods ~.~ for the empty cells in the database so that the entire board description can be selected with a double-click.
