Learning ruby with shoes!

bounce_shoes.rb

# KBounce clone

# Setup a basic canvas, 600x400, not resizable
Shoes.app :width => 600, :height => 400, :resizable => false do
  background black
  
  # Put our vertical and horizontal baracades in a list
  @linesv = []
  @linesh = []
  
  # Create our ball
  @ball = oval(10, 10, 10, fill: white)

  # Default positioning
  x_direction = 10
  y_direction = 10
  
  # Animate at 100 FPS
  @anim = animate 100 do
    # Check the bounds of our canvas and our lines, react to them, by "bouncing"
    if @ball.left-5 >= 600 or @ball.left+5 < 0 or encounters_vertical_baracade(@linesv, @ball)  
      x_direction = -1 * x_direction
    end
    if @ball.top-5 >= 400 or @ball.top+5 < 5 or encounters_horizontal_baracade(@linesh, @ball) 
      y_direction = -1 * y_direction
    end
    @ball.move(@ball.left + x_direction, @ball.top + y_direction)
  end
  
  # Register clicks, draw our rectangles
  click do |button,x,y|
    @linesv << rect(x, 0, 10, 400, fill: red) if button == 1
    @linesh << rect(0, y, 600, 10, fill: red) if button != 1
  end
end 

# Determine if we hit a horizontal baracade
def encounters_horizontal_baracade lines, ball 
    lines.each do |line|
      return true if ball.top >= line.top and ball.top <= line.top+10
    end
    false 
end

# Determine if we hit a vertical baracade
def encounters_vertical_baracade lines, ball 
    lines.each do |line|
      return true if ball.left >= line.left and ball.left <= line.left+10
    end
    false
end

haha... you said "ball"