Class: Faded::Person

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sex, weight, current_time = Time.now) ⇒ Person

Returns a new instance of Person.



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# File 'lib/faded/person.rb', line 5

def initialize(sex, weight, current_time = Time.now)
  @sex = sex.to_s =~ /^(m|d)/i ? :male : :female
  @body_weight = weight
  @drinks = []
  @time = current_time #- 90
  @drank = 0
end

Instance Attribute Details

#time ⇒ Object

Returns the value of attribute time.



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# File 'lib/faded/person.rb', line 3

def time
  @time
end

Instance Method Details

#bac(time = nil) ⇒ Object

Blood Alcohol Concentration (by removing metabolized alcohol over drinking time.)



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# File 'lib/faded/person.rb', line 38

def bac time = nil
  @time = parse_time(time) if time
  level = ("%.3f" % (wtac(total_alc_weight) - hours_drinking * WIDMARK_BETA)).to_f if drinks.size > 0
  level && level > 0 ? level : 0.0
end

#bha ⇒ Object

Portion of body that holds alcohol.



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# File 'lib/faded/person.rb', line 50

def bha
  @body_weight * WIDMARK_R[@sex]
end

#drink(at = Time.now, what = :beer, how_many = 1) ⇒ Object 



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# File 'lib/faded/person.rb', line 17

def drink at = Time.now, what = :beer, how_many = 1 
  how_many.times do |i|
    @drinks << Drink.new(what, parse_time(at))
  end
  bac
end

#drinks ⇒ Object 



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# File 'lib/faded/person.rb', line 24

def drinks
  @drank == @drinks.size ? @drinks : @drinks.sort { |a,b| a.when <=> b.when }.reject { |d| d.when >= @time }
end

#hours_drinking ⇒ Object 



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# File 'lib/faded/person.rb', line 28

def hours_drinking
  (@time - drinks.first.when) / 3600
end

#next_drink(drink) ⇒ Object 



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# File 'lib/faded/person.rb', line 32

def next_drink(drink)
  found = drinks[drinks.index(drink) + 1]
  found ? found.when : @time
end

#shit_bac ⇒ Object

A less accurate way to measure



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# File 'lib/faded/person.rb', line 56

def shit_bac
  bac = drinks.inject(0.0) do |total, drink|
    concentration = wtac(drink.alcohol * ALC_WEIGHT) - drink.hours_ago(next_drink(drink)) * WIDMARK_BETA
    total += concentration < 0 ? 0 : concentration
  end
  ("%.3f" % bac).to_f
end

#total_alc_weight ⇒ Object 



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# File 'lib/faded/person.rb', line 64

def total_alc_weight
  drinks.inject(0) do |total, drink|
    total += drink.alcohol
  end * ALC_WEIGHT
end

#wtac(alc_weight) ⇒ Object

Water Tissue Alcohol Concentration



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# File 'lib/faded/person.rb', line 45

def wtac alc_weight
  alc_weight * GRAVITY_OF_BLOOD / bha * 100
end