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Bug #13964 » bug_repro.rb

Script to reproduce error - md1961 (Naoyuki Kumagai), 10/02/2017 05:47 AM

 
class ActionChooser

def initialize
@options = []
end

def add(action)
@options << Option.new(action)
end

def choose
return @options.last.action if @options.size <= 1

adjust_weights
@options.last.action
end

DEFAULT_WEIGHT = 100
WEIGHT_CUTOFF = 20

class Option
attr_reader :action
attr_accessor :weight

def initialize(action, weight = DEFAULT_WEIGHT)
@action = action
@weight = weight
end

def draw?
@action.is_a?(Draw)
end

def play?
@action.is_a?(Play)
end
end

private

def adjust_weights
if @options.none?(&:play?)
option_draw = @options.find(&:draw?)
option_draw&.weight *= 2
end

@options.each do |option|
option.weight = 0 if option.weight < WEIGHT_CUTOFF
end
end
end

class Conquer; end

class Draw; end

class Play; end


if __FILE__ == $0
chooser = ActionChooser.new

2.times do |age|
chooser.add(Conquer.new)
end

p chooser.choose
end
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