Class: AiVision

Inherits:
Object
  • Object
show all
Defined in:
lib/entities/components/ai/vision.rb

Constant Summary collapse

CACHE_TIMEOUT = 
500
POWERUP_CACHE_TIMEOUT = 
50

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(viewer, object_pool, distance) ⇒ AiVision

Returns a new instance of AiVision.



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# File 'lib/entities/components/ai/vision.rb', line 6

def initialize(viewer, object_pool, distance)
  @viewer = viewer
  @object_pool = object_pool
  @distance = distance
end

Instance Attribute Details

#in_sight ⇒ Object (readonly)

Returns the value of attribute in_sight.



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# File 'lib/entities/components/ai/vision.rb', line 4

def in_sight
  @in_sight
end

Instance Method Details

#can_go_forward? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/entities/components/ai/vision.rb', line 12

def can_go_forward?
  in_front = Utils.point_at_distance(
    *@viewer.location, @viewer.direction, 40)
  @object_pool.map.can_move_to?(*in_front) &&
    @object_pool.nearby_point(*in_front, 40, @viewer)
      .reject { |o| o.is_a? Powerup }.empty?
end

#closest_free_path(away_from = nil) ⇒ Object Also known as: closest_free_path_away_from 



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# File 'lib/entities/components/ai/vision.rb', line 24

def closest_free_path(away_from = nil)
  paths = []
  5.times do |i|
    if paths.any?
      return farthest_from(paths, away_from)
    end
    radius = 55 - i * 5
    range_x = range_y = [-radius, 0, radius]
    range_x.shuffle.each do |x|
      range_y.shuffle.each do |y|
        x = @viewer.x + x
        y = @viewer.y + y
        if @object_pool.map.can_move_to?(x, y) &&
            @object_pool.nearby_point(x, y, radius, @viewer)
              .reject { |o| o.is_a? Powerup }.empty?
          if away_from
            paths << [x, y]
          else
            return [x, y]
          end
        end
      end
    end
  end
  false
end

#closest_powerup(*suitable) ⇒ Object 



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# File 'lib/entities/components/ai/vision.rb', line 63

def closest_powerup(*suitable)
  now = Gosu.milliseconds
  @closest_powerup = nil
  if now - (@powerup_cache_updated_at ||= 0) > POWERUP_CACHE_TIMEOUT
    @closest_powerup = nil
    @powerup_cache_updated_at = now
  end
  @closest_powerup ||= find_closest_powerup(*suitable)
end

#closest_tank ⇒ Object 



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# File 'lib/entities/components/ai/vision.rb', line 53

def closest_tank
  now = Gosu.milliseconds
  @closest_tank = nil
  if now - (@cache_updated_at ||= 0) > CACHE_TIMEOUT
    @closest_tank = nil
    @cache_updated_at = now
  end
  @closest_tank ||= find_closest_tank
end

#update ⇒ Object 



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# File 'lib/entities/components/ai/vision.rb', line 20

def update
  @in_sight = @object_pool.nearby(@viewer, @distance)
end