Created
December 10, 2013 03:22
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class Board | |
BLACK = :b | |
RED = :r | |
WIDTH = 7 | |
HEIGHT = 6 | |
def initialize() | |
@board = [] | |
@current_player = BLACK | |
WIDTH.times do |x| | |
@board[x] = [] | |
end | |
end | |
def render() | |
HEIGHT.times do |y| | |
WIDTH.times do |x| | |
print(@board[x][HEIGHT-y-1] || '.') | |
end | |
puts | |
end | |
end | |
def y_value() | |
@board[@last_move].size - 1 | |
end | |
def won? | |
def template(func) | |
[].tap do |vector| | |
(1..3).each do |i| | |
vector.push *func.call(i) | |
end | |
end | |
end | |
def horizontal(i) | |
[ [@last_move-i, y_value], [@last_move+i, y_value] ] | |
end | |
def vertical(i) | |
[ [@last_move, y_value-i], [@last_move, y_value+i] ] | |
end | |
def backslash(i) | |
[ [@last_move-i, y_value+i], [@last_move+i, y_value-i] ] | |
end | |
def forwardslash(i) | |
[ [@last_move-i, y_value-i], [@last_move+i, y_value+i] ] | |
end | |
[:horizontal, :vertical, :backslash, :forwardslash].any? do |x| | |
check_winnig_vector(template(method(x))) | |
end | |
end | |
def check_winnig_vector(vector_positions) | |
current_color = @board[@last_move].last | |
vector_length = 1 | |
vector_positions.each do |x, y| | |
if (@board[x][y] == current_color && x >= 0 && x < WIDTH) | |
vector_length += 1 | |
end | |
return true if vector_length >= 4 | |
end | |
return false | |
end | |
def moves | |
(0...WIDTH).reject { |x| @board[x].size >= HEIGHT} | |
end | |
def move(position) | |
@board[position].push(player_to_move) | |
@current_player = @current_player == BLACK ? RED : BLACK | |
@last_move = position | |
end | |
def player_to_move | |
@current_player | |
end | |
def self.starting_board | |
end | |
end | |
describe Board do | |
it "it should return all possible moves on an empty board " do | |
board = Board.new() | |
board.moves.should be == [0, 1, 2, 3, 4, 5, 6] | |
end | |
it "it should exclude a column if that column is full" do | |
board = Board.new() | |
6.times do |x| | |
board.move(0) | |
end | |
board.moves.should be == [1, 2, 3, 4, 5, 6] | |
end | |
it "it should not have any moves if all columns are full" do | |
board = Board.new() | |
7.times do |y| | |
6.times do |x| | |
board.move(y) | |
end | |
end | |
board.moves.should be == [] | |
end | |
it "should cycle between black and red" do | |
board = Board.new | |
board.player_to_move.should be Board::BLACK | |
board.move(0) | |
board.player_to_move.should be Board::RED | |
end | |
it "should return false on an empty board" do | |
end | |
it "should return true if black wins horizontally" do | |
board = Board.new | |
board.move(0) | |
board.move(6) # red | |
board.move(1) | |
board.move(5) # red | |
board.move(2) | |
board.move(6) # red | |
board.move(3) | |
board.won?.should be == true | |
end | |
it "should return true if black wins vertically" do | |
board = Board.new | |
board.move(0) | |
board.move(6) # red | |
board.move(0) | |
board.move(6) # red | |
board.move(0) | |
board.move(6) # red | |
board.move(0) | |
board.won?.should be == true | |
end | |
it "should return true if black wins via blackslash vector" do | |
board = Board.new | |
board.move(6) | |
board.move(5) # red | |
board.move(5) | |
board.move(4) # red | |
board.move(3) | |
board.move(4) # red | |
board.move(4) | |
board.move(3) # red | |
board.move(2) | |
board.move(3) # red | |
board.move(3) | |
board.won?.should be == true | |
end | |
it "should return true if black wins via forwardslash vector" do | |
board = Board.new | |
board.move(0) | |
board.move(1) # red | |
board.move(1) | |
board.move(2) # red | |
board.move(3) | |
board.move(2) # red | |
board.move(2) | |
board.move(3) # red | |
board.move(4) | |
board.move(3) # red | |
board.move(3) | |
board.won?.should be == true | |
end | |
end |
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