Class: RoadToRubykaigi::Fireworks

Inherits:
Object
  • Object
show all
Defined in:
lib/road_to_rubykaigi/fireworks.rb

Constant Summary collapse

START_X = 
632
DEMO_START_X = 
524
DURATION_SECOND = 
0.1

Instance Method Summary collapse

Instance Method Details

#build_buffer(offset_x:) ⇒ Object 



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# File 'lib/road_to_rubykaigi/fireworks.rb', line 23

def build_buffer(offset_x:)
  return [] if !shooting? || finished?

  buffer = Array.new(Map::VIEWPORT_HEIGHT) { Array.new(Map::VIEWPORT_WIDTH) { "" } }
  relative_x = @x - offset_x
  relative_y = @y
  current_frame.each_with_index do |row, i|
    row.chars.each_with_index do |character, j|
      next if character == " "
      next if (relative_x + j) > Map::VIEWPORT_WIDTH
      buffer[relative_y+i][relative_x+j] = character
    end
  end
  buffer
end

#shoot ⇒ Object 



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# File 'lib/road_to_rubykaigi/fireworks.rb', line 7

def shoot
  @shooting = true
end

#update ⇒ Object 



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# File 'lib/road_to_rubykaigi/fireworks.rb', line 11

def update
  return unless shooting?
  if finished?
    return EventDispatcher.publish(:finish)
  end

  if Time.now - @last_frame_time >= DURATION_SECOND
    @frame_index += 1
    @last_frame_time = Time.now
  end
end