Class: Arcade::GameWindow

Inherits:
Gosu::Window
  • Object
show all
Defined in:
lib/arcade/base.rb

Instance Method Summary collapse

Constructor Details

#initialize(width, height) ⇒ GameWindow

Returns a new instance of GameWindow.



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# File 'lib/arcade/base.rb', line 16

def initialize width, height
  @current_time = Gosu::milliseconds
  @objects      = []

  @keypress_listeners  = Hash.new { |h,k| h[k] = [] }

  super width, height, false
end

Instance Method Details

#add_listener(key, object) ⇒ Object 



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# File 'lib/arcade/base.rb', line 38

def add_listener key, object
  @keypress_listeners[key] << object
end

#add_object(game_object) ⇒ Object 



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# File 'lib/arcade/base.rb', line 25

def add_object game_object
  game_object.keypress_listeners.each do |key, proc|
    self.add_listener key, game_object
  end

  @objects << game_object
end

#button_down(id) ⇒ Object 



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# File 'lib/arcade/base.rb', line 91

def button_down id
end

#draw ⇒ Object 



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# File 'lib/arcade/base.rb', line 50

def draw
  @objects.each do |game_object|
    game_object.draw
  end
end

#draw_square(upper_left, width, height, color = Arcade::Color::WHITE) ⇒ Object 



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# File 'lib/arcade/base.rb', line 94

def draw_square upper_left, width, height, color = Arcade::Color::WHITE
  x, y = upper_left

  draw_quad x,       y,        color,
            x+width, y,        color,
            x+width, y+height, color,
            x,       y+height,  color
end

#listened_keys ⇒ Object 



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# File 'lib/arcade/base.rb', line 42

def listened_keys
  @keypress_listeners.keys
end

#listeners_for_key(key) ⇒ Object 



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# File 'lib/arcade/base.rb', line 46

def listeners_for_key key
  @keypress_listeners[key]
end

#register(game_object) ⇒ Object 



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# File 'lib/arcade/base.rb', line 33

def register game_object
  game_object.window = self
  self.add_object(game_object)
end

#update ⇒ Object 



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# File 'lib/arcade/base.rb', line 56

def update
  dt = (Gosu::milliseconds - @current_time) / 1000.0
  @current_time = Gosu::milliseconds

  self.listened_keys.each do |key|
    self.listeners_for_key(key).each do |listener|
      listener.key_pressed(key) if button_down?(key)
    end
  end

  @objects.each do |object|
    (@objects - [object]).each do |other|
      if object.collides_with?(other)
        object.collided_with(other)
      end
    end

    edge = if object.top < 0
             :top
           elsif object.bottom > self.height
             :bottom
           elsif object.left < 0
             :left
           elsif object.right > self.width
             :right
           end

    object.hit_edge(edge) if edge
  end

  @objects.each do |object|
    object._update(dt)
  end
end