Simple maze solver

maze.rb

game = <<~MAZE
++++++++++++++++++++++
+   +   ++ ++     +
+ +   +       +++ + ++
+ + +  ++  ++++   + ++
+++ ++++++    +++ +  +
+          ++  ++    +
+++++ ++++++   +++++ +
+     +   +++++++  + +
+ +++++++      S +   +
+                + +++
++++++++++++++++++ +++
MAZE

BRICK = '💠'
SPACE = '⚪'
TRIED = '⚫'
TURTLE = '🐢'
BAD = '🔴'
GOOD = '🔵'

class Game
  attr_accessor :start_row, :start_col, :maze
  def initialize(board)
      @maze = []
      board.lines.map(&:chomp).each_with_index.map do |line, x|
        @maze[x] = []
        line.chars.each_with_index.map do |char, y|
          @maze[x][y] = 
            if char == 'S'
              @start_row, @start_col = x, y
              TURTLE
            elsif char == '+'
              BRICK
            else
              char
            end
      end
    end
    @width = @maze.first.size
    @height = @maze.size
  end


  def update_position(x, y,value: nil)
    if value
      @maze[x][y] = value
    end
    print_board x,y
  end

  def exit?(x,y)
    x == 0 || 
      y == 0 ||
      x == @height-1 ||
      y == @width - 1
  end
  def print_board _x, _y
    puts "\e[H\e[2J"
    all_good = 0
    (0..@height-1).each do |x|
      (0..@width-1).each do |y|
        label = 
          if _x == x && _y == y 
            TURTLE 
          elsif exit?(x, y) && @maze[x][y] == GOOD
            all_good += 1
            '🏁' 
          else
            @maze[x][y]
          end
        print label
      end
      print "\n"
    end
    sleep 0.01
    if all_good == 2
      exit
    end
  end
end
def search_from(game, x, y)
  puts "search from #{x} #{y}"
  game.update_position(x, y)
  if [BAD, BRICK, TRIED].include?(game.maze[x][y])
    return false
  else
    if game.exit? x, y
      game.update_position x, y, value: GOOD
      puts "You Won!!"
      return true
    end
    game.update_position x, y, value: TRIED
  end
  if [search_from(game, x-1,y),
      search_from(game, x+1,y),
      search_from(game, x, y+1),
      search_from(game, x, y-1)].find(true)
    game.update_position x, y, value: GOOD
    return true
  else
    game.update_position x, y, value: BAD
    return false
  end
end
g = Game.new(game)
search_from(g, g.start_row, g.start_col)
sleep 1