maze_in_minecraft.rb

require 'minecraft-pi-ruby'

N = 41

xs = []

(N + 2).times do |y|
  xs[y] = ' ' * (N + 2)
end

(N + 2).times do |y|
  (N + 2).times do |x|
    if (y == 0 || y == N + 1) || (x == 0 || x == N + 1)
      xs[y][x] = '#'
    elsif (y % 2 == 0 && x % 2 == 0)
      xs[y][x] = '#'
      case Random.rand(4)
      when 0
        xs[y - 1][x] = '#'
      when 1
        xs[y][x + 1] = '#'
      when 2
        xs[y + 1][x] = '#'
      when 3
        xs[y][x - 1] = '#'
      end
    end
  end
end

xs.each do |line|
  puts line
end

mc = Minecraft.new

mc.set_player_position(0, 100, 0)
mc.set_blocks(-500,   -1, -500, 500, -1, 500, Block::STONE)
mc.set_blocks(-500,   0, -500, 500, 64, 500, Block::AIR)

W = 10
H = 20
base_x = - (N / 2 * 5)
base_y = - (N / 2 * 5)

xs.each_with_index do |line, idx_x|
  line.each_char.with_index do |elm, idx_y|
    if elm == '#'
      mc.set_blocks(base_x + W * idx_x,   0, base_y + W * idx_y, base_x + W * (idx_x + 1), H, base_y + W * (idx_y + 1), Block::DIAMOND_BLOCK)
    end
  end
end