Help with rebound function

[fernando]

Hi, I am trying to make a pong game in java and this is the rebound function for the left paddle. now just to set a few variables:

Code:

x_pos is the balls x position
y_pos is the balls y position
x_speed is the x speed of the ball
radius is only for the ball and is the balls radius.
paddle1_x you can guess
paddle1_y you can also guess...

Now i did not have a radius for my paddles so the paddle stretches 40 y down and 10 x in width... so without any further ado, heres the code:

Code:

public void bounceToLeft(){
 if(x_pos-radius<=paddle1_x+10&&x_pos-radius>=paddle1_x){
  if(y_pos<=paddle1_y-40&&y_pos>=paddle1_y){
   x_speed=-1;
  }
 }
}

I call this function in the run method of the applet. Does anyone know why it doesn't work?

Thanks

[hardwired]

Code:

public void bounceToLeft(){
    if(y_pos + 2*radius > rightPaddle_y &&            // ball will hit top of paddle
       y_pos < rightPaddle_y + rightPaddle_height &&  // ball will hit paddle bottom
       x_pos + 2*radius > rightPaddle_x)              // ball hits paddle side
        x_speed *= -1;                                // toggle speed direction
}

public void bounceToRight() {
    if(y_pos + 2*radius > leftPaddle_y &&                 // hit top of paddle
       y_pos < leftPaddle_y + leftPaddle_height &&        // hit paddle bottom
       x_pos + x_speed < leftPaddle_x + leftPaddle_width) // hit paddle side
        x_speed *= -1;
}