class Game attr_reader :live_cells, :tick_count def initialize(live_cells) @tick_count = 0 @live_cells = live_cells # Arr[ [x,y] ] end def tick(args=nil) calculate_next_gen render(args) @tick_count += 1 end private attr_writer :live_cells, :tick_count def calculate_next_gen next_gen_living_cells = [] live_cell_map = convert_cells_to_map cells_to_check = calculate_cells_to_check cells_to_check.each do |x,y| is_next_gen_living = check_cell(x,y,live_cell_map) next_gen_living_cells << [x,y] if is_next_gen_living end @live_cells = next_gen_living_cells end def check_cell(x,y,live_cell_map) adjacent_living_cell_count = adjacent_living_cell_count(x,y,live_cell_map) return true if adjacent_living_cell_count == 3 return true if adjacent_living_cell_count == 2 && is_living_cell?(x,y,live_cell_map) return false end def is_living_cell?(x,y,live_cell_map) live_cell_map.dig(x)&.dig(y) == true end def convert_cells_to_map map = {} live_cells.each do |x,y| map[x] ||= {} map[x][y] = true end map end def calculate_cells_to_check cells_to_check = live_cells.dup live_cells.each do |x,y| cells_to_check += adjacent_cell_coordinates(x,y) end cells_to_check.uniq end def adjacent_cell_coordinates(x,y) adjacent_cells = [] -1.upto(1).each do |i| -1.upto(1).each do |j| adjacent_cells << [x+i,y+j] end end adjacent_cells -= [[x,y]] adjacent_cells end def adjacent_living_cell_count(x,y,live_cell_map) map = live_cell_map count = 0 -1.upto(1).each do |i| -1.upto(1).each do |j| next if i==0 && j==0 count += 1 if map.dig(x+i)&.dig(y+j) end end count end def render(args) # print_console end def print_console puts "--- Round #{tick_count} ---" max_x = live_cells.map{|x,y| x}.max + 5 max_y = live_cells.map{|x,y| y}.max + 5 max_y.times do |y| max_x.times do |x| if live_cells.include? [x,y] print "*" else print "." end end print "\n" end end end # console test # INPUT = [ # [9,9], # [10,10], # [9,11], # [11,11], # [9,12], # [11,12], # [13,13], # [14,13], # [15,13], # [16,13], # [16,15], # [16,16], # [17,17], # ] # game = Game.new(INPUT) # 100.times do |i| # game.tick # sleep 0.2 # end