July 2015
Intermediate to advanced
286 pages
6h 31m
English
Content preview from Mazes for Programmers
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Implementing the Sidewinder Algorithm
The Sidewinder algorithm (from The Sidewinder Algorithm) is similar in many respects to the Binary Tree algorithm. You’ll recall that it has similar biases, and even a (conceptually) similar approach, randomly choosing at each step to either carve east from the current cell, or north from the current run of cells. In practice, though, Sidewinder feels like a very different beast.
In code, it looks something like this. Put the following in a file named sidewinder.rb.
| sidewinder.rb | |
| Line 1 | class Sidewinder |
| - | |
| - | def self.on(grid) |
| - | grid.each_row do |row| |
| 5 | run = [] |
| - | |
| - | row.each do |cell| |
| - | run << cell |
| - | |
| 10 | at_eastern_boundary = (cell.east == nil) |
| - | at_northern_boundary = (cell.north == nil) ... |
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