木構造の迷路生成 (gistに残す必要は無いけれども)

gen_maze.rb

@n=59

range=(1..(@n-1)).to_a.reject{|e|e.even?}

@maze=Array.new(@n){Array.new(@n){'#'}}
@n.times{|y|
    @n.times{|x|
        @maze[x][y]="$" if x==0||y==0||x==@n-1||y==@n-1
    }
}
def dig(x,y)
    @maze[x][y]="."
    a=[[-1,0],[1,0],[0,-1],[0,1]].shuffle
    a.each{|e|
        if x+e[0]<0 || y+e[1]<0 || x+e[0]>@n-1||y+e[1]>@n-1;p [x,y];exit;end
        if (@maze[x+e[0]][y+e[1]]=="#" && @maze[x+e[0]*2][y+e[1]*2]=="#")
            @maze[x+e[0]][y+e[1]]="."
            dig(x+e[0]*2,y+e[1]*2)
        end
    }
end

dig(range.sample,range.sample)

@maze.each{|e| puts (e*"").gsub(/\$/){'#'}}