Class: Checkers::GUI::Scene::PieceAnimation

Inherits:
Object
  • Object
show all
Defined in:
lib/checkers/gui/scene/piece_animation.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ PieceAnimation

Returns a new instance of PieceAnimation.



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# File 'lib/checkers/gui/scene/piece_animation.rb', line 10

def initialize
  @finished = false
end

Instance Attribute Details

#animation_proc=(value) ⇒ Object (writeonly)

Sets the attribute animation_proc

Parameters:

  • value —

    the value to set the attribute animation_proc to.



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# File 'lib/checkers/gui/scene/piece_animation.rb', line 7

def animation_proc=(value)
  @animation_proc = value
end

#finished ⇒ Object

Returns the value of attribute finished.



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# File 'lib/checkers/gui/scene/piece_animation.rb', line 8

def finished
  @finished
end

Class Method Details

.animate(board, move) ⇒ Object 



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# File 'lib/checkers/gui/scene/piece_animation.rb', line 19

def animate(board, move)
  object = board.piece_at(*move.start_square)&.piece
  square = board.square_at(*move.end_square)
  x = square.x + Checkers::GUI::CIRCLE_TRANSLATION - object.x
  y = square.y + Checkers::GUI::CIRCLE_TRANSLATION - object.y
  object.z = 10

  animation = PieceAnimation.new

  animation.animation_proc = proc do
    unless x.zero?
      if x.negative?
        x += 1
        object.x -= 1
      else
        x -= 1
        object.x += 1
      end
    end

    unless y.zero?
      if y.negative?
        y += 1
        object.y -= 1
      else
        y -= 1
        object.y += 1
      end
    end

    if x.zero? && y.zero?
      yield if block_given?
      animation.finished = true
    end
  end

  animation
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/checkers/gui/scene/piece_animation.rb', line 14

def call
  @animation_proc.call
end