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game_board.rb
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game_board.rb
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class GameBoard
def initialize
@width = 10
@height = 13 # strange, right?
@board = Array.new
end
attr_reader :width
attr_reader :height
def read_from_file(board_filename)
File.open(board_filename).each do |line|
line.chomp!
line.each_char do |c|
@board << c
end
end
end
def next_possible_coords(row, col)
# Return array of (row,col) pairs for up to 8 possible next moves.
possibilities = Array.new
possibilities << [row-1, col-1] if valid_coords?(row-1, col-1)
possibilities << [row-1, col] if valid_coords?(row-1, col)
possibilities << [row-1, col+1] if valid_coords?(row-1, col+1)
possibilities << [row, col-1] if valid_coords?(row, col-1)
possibilities << [row, col+1] if valid_coords?(row, col+1)
possibilities << [row+1, col-1] if valid_coords?(row+1, col-1)
possibilities << [row+1, col] if valid_coords?(row+1, col)
possibilities << [row+1, col+1] if valid_coords?(row+1, col+1)
possibilities
end
def to_s
for row in 0..@height-1
for col in 0..@width-1
print char_at(row, col)
end
puts
end
end
def char_at(row, col)
# NOTE: (0,0) is top left corner
@board[row * @width + col]
end
private
def valid_coords?(row, col)
row >= 0 && row < @height && col >= 0 && col < @width
end
end