Hi All,

First time here. First of all Thanks to the creators of Processing , ruby-processing and rubyonprocessing. Great work. I have been trying the plain vanillla PDE and also the various ruby implementations. However I have ran into a problem everytime I try to use the ">=" or "<=" I run into trouble. The jruby stack elided error is not helping much. I would rather do all my coding in the original PDE but my computer seems to take forever to load it. (ArchLinux Kernel 2.6.29 jdk6) Hence I am using the two ruby versions. However both 'rp5' and 'rop' are crashing at the same point. I have attached the file. I hope it is not some stupid mistake on my part. If so I'm sorry. But I have honestly checked all that I could before posting this.

Thanks for all your help in advance.




--- sorry I had to use this instead of attaching the file.
#def initialize
#      @win_width = 400
#      @win_height = 300
#end

public class Ball
     @@ball_counter = 0

     def initialize(temprad )
           @temprad = temprad
           @xpos = random(width)
           @ypos = random(height)
           @xspeed = random(-5,5)
           @yspeed = random(-5,5)
           @ballcolor = color(100,50)

           @@ball_counter += 1
     end

     #this creates setter and getter methods for
     #@temprad
     attr_accessor :temprad , :xpos , :ypos, :xspeed, :yspeed, :ballcolor

     def move
           @xpos += @xspeed
           @ypos += @yspeed

           if @x >  width
                 @xspeed *= -1
           end
           
           #if (@x > width ||  @x < 0)
           #      @xspeed *= -1
           #end
           #
           #
           #if (@y > height ||  @y < 0)
           #      @yspeed *= -1
           #end
           
           #if (@x > @win_height || @x < 0)
           #      @xspeed *= -1
           #end


           #if (@y > @win_height || @y < 0)
           #      @yspeed *= -1
           #end

           
     end

     def display
           stroke 0
           fill @ballcolor
           ellipse @xpos, @ypos, @temprad * 2, @temprad * 2
     end


     #Class method (also called static method
     def Ball.number_of_Balls
           @@ball_counter
     end
end

def setup
     size 400, 300 #width, height
end

def draw
     background 205
     aBall = Ball.new 25
     bBall = Ball.new 50
     aBall.display
     bBall.display

     aBall.move
     bBall.move


end

Thank you jashkenas.
Truly appreciate the help. I spend a lot of time on it but thanks for stepping in and helping me out. Now I am back to having more fun with ruby + processing .  
Also thanks a lot for creating and releasing ruby-processing. I mean Processing is awesome ruby-processing is fun...

Thanks again.