Class: ObjectPool

Inherits:
Object
  • Object
show all
Defined in:
lib/entities/object_pool.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(box) ⇒ ObjectPool

Returns a new instance of ObjectPool.



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# File 'lib/entities/object_pool.rb', line 8

def initialize(box)
  @tree = QuadTree.new(box)
  @powerup_respawn_queue = PowerupRespawnQueue.new
  @objects = []
end

Instance Attribute Details

#camera ⇒ Object

Returns the value of attribute camera.



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# File 'lib/entities/object_pool.rb', line 2

def camera
  @camera
end

#map ⇒ Object

Returns the value of attribute map.



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# File 'lib/entities/object_pool.rb', line 2

def map
  @map
end

#objects ⇒ Object

Returns the value of attribute objects.



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# File 'lib/entities/object_pool.rb', line 2

def objects
  @objects
end

#powerup_respawn_queue ⇒ Object

Returns the value of attribute powerup_respawn_queue.



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# File 'lib/entities/object_pool.rb', line 2

def powerup_respawn_queue
  @powerup_respawn_queue
end

Instance Method Details

#add(object) ⇒ Object 



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# File 'lib/entities/object_pool.rb', line 14

def add(object)
  @objects << object
  @tree.insert(object)
end

#nearby(object, max_distance) ⇒ Object 



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# File 'lib/entities/object_pool.rb', line 51

def nearby(object, max_distance)
  cx, cy = object.location
  nearby_point(cx, cy, max_distance, object)
end

#nearby_point(cx, cy, max_distance, object = nil) ⇒ Object 



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# File 'lib/entities/object_pool.rb', line 38

def nearby_point(cx, cy, max_distance, object = nil)
  hx, hy = cx + max_distance, cy + max_distance
  # Fast, rough results
  results = @tree.query_range(
    AxisAlignedBoundingBox.new([cx, cy], [hx, hy]))
  # Sift through to select fine-grained results
  results.select do |o|
    o != object &&
      Utils.distance_between(
        o.x, o.y, cx, cy) <= max_distance
  end
end

#query_range(box) ⇒ Object 



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# File 'lib/entities/object_pool.rb', line 56

def query_range(box)
  @tree.query_range(box)
end

#size ⇒ Object 



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# File 'lib/entities/object_pool.rb', line 4

def size
  @objects.size
end

#tree_insert(object) ⇒ Object 



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# File 'lib/entities/object_pool.rb', line 23

def tree_insert(object)
  @tree.insert(object)
end

#tree_remove(object) ⇒ Object 



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# File 'lib/entities/object_pool.rb', line 19

def tree_remove(object)
  @tree.remove(object)
end

#update_all ⇒ Object 



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# File 'lib/entities/object_pool.rb', line 27

def update_all
  @objects.each(&:update)
  @objects.reject! do |o|
    if o.removable?
      @tree.remove(o)
      true
    end
  end
  @powerup_respawn_queue.respawn(self)
end