Class: HomingGunner

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

Instance Method Summary collapse

Constructor Details

#initialize(targets_remaining, hit_location, shots_fired) ⇒ HomingGunner

Returns a new instance of HomingGunner.



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# File 'lib/uss_monte_carlo/homing_gunner.rb', line 5

def initialize(targets_remaining, hit_location, shots_fired)
  @smallest_ship = targets_remaining.inject(5) { |min, s| SHIP_SIZES[s] < min ? SHIP_SIZES[s] : min }
  @original_hit = @shot = hit_location
  @shots_fired = shots_fired
  @hits = [hit_location]
  pick_direction_and_orientation
end

Instance Method Details

#next_shot ⇒ Object

Raises:



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# File 'lib/uss_monte_carlo/homing_gunner.rb', line 13

def next_shot
  raise GunnerError.new("All shots have been taken: #{@shots_fired}") if @shots_fired.length >= (ROWS.length * COLUMNS.length)
  candidate_shot = move_from(@shot)
  if candidate_shot == @shot
    self.send next_strategy
    candidate_shot = move_from(@shot)
  end
  @shot = candidate_shot
    
  while @shots_fired.include? @shot
    @shot = @original_hit
    self.send next_strategy
    @shot = move_from(@shot)
  end
  @shot
end

#shot_result(coordinates, was_hit, ship_sunk) ⇒ Object 



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# File 'lib/uss_monte_carlo/homing_gunner.rb', line 30

def shot_result(coordinates, was_hit, ship_sunk)
  @shots_fired << coordinates unless @shots_fired.include? coordinates
  if ship_sunk
    remove_hits(ship_sunk)
  elsif was_hit
    @hits << coordinates
  else
    @shot = @original_hit
    self.send next_strategy
  end
end

#unaccounted_hits ⇒ Object 



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# File 'lib/uss_monte_carlo/homing_gunner.rb', line 42

def unaccounted_hits
  @hits
end