Class: Entity::Base

Inherits:
Entity show all
Defined in:
lib/game_2d/entity/base.rb

Constant Summary

Constants included from EntityConstants

EntityConstants::CELL_WIDTH_IN_PIXELS, EntityConstants::MAX_VELOCITY, EntityConstants::PIXEL_WIDTH, EntityConstants::WIDTH

Instance Attribute Summary

Attributes inherited from Entity

#a, #moving, #space, #x, #x_vel, #y, #y_vel

Instance Method Summary collapse

Methods inherited from Entity

#above, #accelerate, #all_state, #angle_to_vector, #as_json, #beneath, #bottom_cell_y, #cx, #cy, #destroy!, #direction, #direction_to, #doomed?, #draw, #draw_angle, #draw_animation, #draw_image, #draw_zorder, #drop_diagonal, #empty_above?, #empty_on_left?, #empty_on_right?, #empty_underneath?, #entities_obstructing, #going_past_entity, #grab!, #grabbed?, #harmed_by, #i_hit, #initialize, #left_cell_x, #move, #move_x, #move_y, #moving?, #next_to, #occupied_cells, #on_left, #on_right, #opaque, #pixel_x, #pixel_y, #release!, #right_cell_x, #sleep_now?, #slide_around, #slow_by, #slower_speed, #teleportable?, #to_s, #top_cell_y, #underfoot, #update_from_json, #vector_to_angle, #wake!, #warp

Methods included from ClassMethods

#bottom_cell_y_at, #constrain_velocity, #left_cell_x_at, #right_cell_x_at, #top_cell_y_at

Methods included from Transparency

#transparent?

Methods included from Registerable

#nullsafe_registry_id, #registry_id, #registry_id=, #registry_id?, #registry_id_safe

Methods included from Serializable

#<=>, #==, #all_state, as_json, #eql?, from_json, #hash, #to_json, #to_s, #update_from_json

Constructor Details

This class inherits a constructor from Entity

Instance Method Details

#available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/game_2d/entity/base.rb', line 19

def available?
  return false unless space

  # Can't use entity.entities_obstructing() here, as that only
  # returns objects opaque to the receiver (the base).  Players
  # aren't opaque to bases.  We need to ensure there are no
  # solid (non-ghost) players occupying the space.
  #
  # This logic depends on the fact that anything transparent
  # to a base is also transparent to a player.  If we ever allow
  # a base to go somewhere a player can't be, that's a problem.
  space.entities_overlapping(x, y).find_all do |e|
    e.is_a?(Player) && !e.is_a?(Entity::Ghost)
  end.empty?
end

#image_filename ⇒ Object 



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# File 'lib/game_2d/entity/base.rb', line 35

def image_filename; "base.png"; end

#should_fall? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/game_2d/entity/base.rb', line 8

def should_fall?; underfoot.empty?; end

#update ⇒ Object 



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# File 'lib/game_2d/entity/base.rb', line 10

def update
  if should_fall?
    self.a = (direction || 180) + 180
  else
    slow_by 1
  end
  super
end