Class: InteractiveTerm::VirtualScreen

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(width, height) ⇒ VirtualScreen 



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# File 'lib/interactive_term.rb', line 155

def initialize(width, height)
  @width = width
  @height = height

  @sprites = []

  @draw_mutex = Mutex.new

  @screen_buffer = ScreenBuffer.new(@width, @height)
end

Instance Attribute Details

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/interactive_term.rb', line 153

def height
  @height
end

#sprites ⇒ Object (readonly)

Returns the value of attribute sprites.



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# File 'lib/interactive_term.rb', line 153

def sprites
  @sprites
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/interactive_term.rb', line 153

def width
  @width
end

Instance Method Details

#add_sprite(sprite) ⇒ Object 



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# File 'lib/interactive_term.rb', line 166

def add_sprite(sprite)
  # might want to simply give sprite a reference to screen
  sprite.set_screen_dimensions(@width, @height)
  @sprites << sprite
end

#cleanup ⇒ Object 



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# File 'lib/interactive_term.rb', line 186

def cleanup
  @draw_mutex.unlock if @draw_mutex.locked?
  #TODO: might want to do a full clean up of screen here
end

#draw(char, x, y) ⇒ Object 



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# File 'lib/interactive_term.rb', line 180

def draw(char, x, y)
  @draw_mutex.synchronize do
    print "\e[#{y+1};#{x+1}H#{char}"
  end
end

#update! ⇒ Object 



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# File 'lib/interactive_term.rb', line 172

def update!
  new_buffer = ScreenBuffer.new(@width, @height)
  new_buffer.render(sprites)
  deltas = @screen_buffer.deltas(new_buffer)
  deltas.each {|d| draw(*d)}
  @screen_buffer = new_buffer
end