Class: World

Inherits:
Object
  • Object
show all
Defined in:
lib/world.rb

Overview

class World

Instance Method Summary collapse

Constructor Details

#initialize(width:, height:, init: nil) ⇒ World

Returns a new instance of World

Parameters:

  • width (Integer)
  • height (Integer)
  • init (String) 


11
12
13
 
# File 'lib/world.rb', line 11

def initialize(width:, height:, init: nil)
  @state = WorldState.new(width: width, height: height, init: init)
end

Instance Method Details

#clear ⇒ Object

reset the entire world state (all dead)



16
17
18
 
# File 'lib/world.rb', line 16

def clear
  @state = WorldState.new(width: @state.width, height: @state.height)
end

#iterate ⇒ Object

transition the world from the present state to its next state



57
58
59
60
61
62
63
64
 
# File 'lib/world.rb', line 57

def iterate
  @state.each_char.each_with_index.each_with_object([]) do |(curr, pos), memo|
    nxt = @state.next(pos)
    curr == nxt ? memo : memo << [nxt, pos]
  end.each do |char, pos|
    set_player(player: char, pos: pos)
  end
end

#player_score(player) ⇒ Integer

get the current score for a given player

Parameters:

  • player (String) —

    a character representing a player

Returns:

  • (Integer) 


36
37
38
 
# File 'lib/world.rb', line 36

def player_score(player)
  @state.count(player)
end

#seed_player(pos:, seed:, char:) ⇒ Object

takes a morphogen seed and puts it (starting at) the given position

Parameters:

  • pos (Integer)
  • seed (Array<String>)
  • char (String) 


44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/world.rb', line 44

def seed_player(pos:, seed:, char:)
  return unless seed.length == 8
  seed.each do |string|
    return unless string.length == 8
    string.each_char do |c|
      set_player(player: char, pos: pos) if c == 'X'
      pos += 1
    end
    pos += @state.width - string.length
  end
end

#set_player(player: ' ', pos:) ⇒ Object

Set a player at a given position

Parameters:

  • player (String) —

    a character representing a player, or space for dead cell

  • pos (Integer) —

    the position it should be set at



29
30
31
 
# File 'lib/world.rb', line 29

def set_player(player: ' ', pos:)
  @state[pos] = player
end

#state ⇒ WorldState

returns a frozen copy of the world's current state

Returns:



22
23
24
 
# File 'lib/world.rb', line 22

def state
  @state.dup.freeze
end