Class: Rong::Elements::Paddle

Inherits:
Object
  • Object
show all
Includes:
Entity
Defined in:
lib/rong/elements/paddle.rb

Constant Summary collapse

WIDTH = 
10
HEIGHT = 
50
SPEED = 
10

Instance Attribute Summary collapse

Attributes included from Entity

#height, #width, #x, #y

Instance Method Summary collapse

Methods included from Entity

#bottom, #intersects?, #left, #move_to, #right, #top

Constructor Details

#initialize(name, side, start_x, start_y) ⇒ Paddle

Returns a new instance of Paddle.



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# File 'lib/rong/elements/paddle.rb', line 13

def initialize(name, side, start_x, start_y)
  self.name = name
  self.side = side
  super(start_x, start_y)
end

Instance Attribute Details

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/rong/elements/paddle.rb', line 11

def name
  @name
end

#side ⇒ Object

Returns the value of attribute side.



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# File 'lib/rong/elements/paddle.rb', line 11

def side
  @side
end

Instance Method Details

#hit(ball) ⇒ Object 



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# File 'lib/rong/elements/paddle.rb', line 31

def hit(ball)
  ball_x = left? ? right : left
  ball.reflect_x(ball_x)
  ball.reflect_y if ball.y < y

  strength = (y - ball.y).abs / (height / 2)
  ball.angle = 45 * strength
end

#left? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rong/elements/paddle.rb', line 27

def left?
  side == :left
end

#move_down ⇒ Object 



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# File 'lib/rong/elements/paddle.rb', line 23

def move_down
  self.y += SPEED
end

#move_up ⇒ Object 



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# File 'lib/rong/elements/paddle.rb', line 19

def move_up
  self.y -= SPEED
end