Class: CellularGenerator

Inherits:
Map
  • Object
show all
Defined in:
lib/delve/generator/cellular.rb

Instance Method Summary collapse

Methods inherited from Map

#fill, #height, #width

Constructor Details

#initialize(width = nil, height = nil, opts = Hash.new) ⇒ CellularGenerator

Returns a new instance of CellularGenerator.



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# File 'lib/delve/generator/cellular.rb', line 5

def initialize(width=nil, height=nil, opts=Hash.new)
  super width, height
  @options = {
    born: [5, 6, 7, 8],
    survive: [4, 5, 6, 7, 8],
    topology: :eight
  }

  set_options opts

  @dirs = directions @options[:topology]
  @map = fill 0
end

Instance Method Details

#generate ⇒ Object 



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# File 'lib/delve/generator/cellular.rb', line 35

def generate
  new_map = fill 0
  randomize 0.45
  born = @options[:born]
  survive = @options[:survive]

  (0..@height-1).each do |j|
    width_step = 1
    width_start = 0
    if @options[:topology] == 6
      width_step = 2
      width_start = j%2
    end

    width_start.step(@width-1, width_step) do |i|
      curr = @map[i][j]
      ncount = get_neighbours i, j

      if curr > 0 and survive.index(ncount) != nil
        new_map[i][j] = 1
      elsif curr <= 0 and born.index(ncount) != nil
        new_map[i][j] = 1
      end

      yield i, j, new_map[i][j]
    end
  end

  @map = new_map
end

#randomize(probablility) ⇒ Object 



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# File 'lib/delve/generator/cellular.rb', line 19

def randomize(probablility)
  (0..@width-1).each do |i|
    (0..@height-1).each do |j|
      @map[i][j] = rand < probablility ? 1 : 0
    end
  end
end

#set(x, y, value) ⇒ Object 



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# File 'lib/delve/generator/cellular.rb', line 31

def set(x, y, value)
  @map[x][y] = value
end

#set_options(opts) ⇒ Object 



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# File 'lib/delve/generator/cellular.rb', line 27

def set_options(opts)
  opts.keys.each { |key| @options[key] = opts[key] }
end