King.rb

require_relative 'Piece'

class King < Piece
	def initialize x,y,board,color
		super x,y,board,color,100000
	end

	def check_possible_moves
		@possible_moves = []
		if @alive
			possible_moves = [[@x+1,@y+1],[@x-1,@y+1],[@x+1,@y-1],[@x-1,@y-1],[@x-1,@y],[@x+1,@y],[@x,@y-1],[@x,@y+1]]
			possible_moves.each do |move|
				if move[0]>0 and move[1]>0 and move[0]<=8 and move[1]<=8
					# puts 'debug '+move.to_s
					if @board[move[0]][move[1]].piece == nil or @board[move[0]][move[1]].piece.color != @color
						if @board[move[0]][move[1]].piece
							move[2] = @board[move[0]][move[1]].piece.value
						else
							move[2] = 1
						end
						@possible_moves << move
					end
				end
			end
		end
		@possible_moves
	end

	def under_check? oponent_pieces
		checked_places = []
		causer = nil
		oponent_pieces.each do |piece|
			# puts piece.class.to_s + ' ' + piece.color + ' ' + piece.check_possible_moves.map{|p| [p[0],p[1]]}.to_s
			checked_places << piece.check_possible_moves.map{|p| [p[0],p[1],1000]}
			if piece.check_possible_moves.map{|p| [p[0],p[1]]}.include? self.position?
				# puts "Im under a CHECK!!!"
				causer = piece
				# break
			end
		end
		if causer
			moves = self.check_possible_moves
			safe_moves = (moves - checked_places).uniq
			# puts safe_moves.to_s + 'MOVES'
			if safe_moves.empty?
				# puts "Someone kill him!!!"
			end
			return safe_moves[rand(safe_moves.length)]
		else 
			return false
		end
	end

	def move move
		x=@x
		y=@y
		super move
		# check? [@x,@y]
	end
end