353 chars in Ruby:
314 277 chars now!
OK, 256 chars in Ruby and now I'm done. Nice round number to stop at. :)
247 chars. I can't stop.
223 203 201 chars in Ruby
d=x=y=-1;b=readlines.each{|l|d<0&&(d="^>v<".index l[x]if x=l.index(/[>^v<]/)
y+=1)};loop{c=b[y+=[-1,0,1,0][d]][x+=[0,1,0,-1][d]]
c==47?d=[1,0,3,2][d]:c==92?d=3-d:c==35?(p !1;exit):c
With whitespace:
d = x = y = -1
b = readlines.each { |l|
d < 0 && (d = "^>v<".index l[x] if x = l.index(/[>^v<]/); y += 1)
}
loop {
c = b[y += [-1, 0, 1, 0][d]][x += [0, 1, 0, -1][d]]
c == 47 ? d = [1, 0, 3, 2][d] :
c == 92 ? d = 3 - d :
c == 35 ? (p !1; exit) :
c < ?x ? 0 : (p !!1; exit)
}
Slightly refactored:
board = readlines
direction = x = y = -1
board.each do |line|
if direction < 0
x = line.index(/[>^v<]/)
if x
direction = "^>v<".index line[x]
end
y += 1
end
end
loop do
x += [0, 1, 0, -1][direction]
y += [-1, 0, 1, 0][direction]
ch = board[y][x].chr
case ch
when "/"
direction = [1, 0, 3, 2][direction]
when "\\"
direction = 3 - direction
when "x"
puts "true"
exit
when "#"
puts "false"
exit
end
end
