if rightPaddle.bottom() < HEIGHT:
rightPaddle.move_down()
#handling ball motion
if ball.x <= 0:
ball.x, ball.y = WIDTH/2, HEIGHT/2
rightScore += 1
scored = True
elif ball.x >= WIDTH - ball.radius:
ball.x, ball.y = WIDTH/2, HEIGHT/2
leftScore += 1
scored = True
if ball.y <= ball.radius or ball.y >= HEIGHT - ball.radius:
ball.set_yspeed( -ball.yspeed )
#ball - paddle collision detection
if ( rightPaddle.left() < (ball.x + ball.radius) and rightPaddle.right() > (ball.x - ball.radius) ) and ( rightPaddle.top() < (ball.y + ball.radius) and rightPaddle.bottom() > (ball.y - ball.radius) ):
ball.bounce( rightPaddle.top(), rightPaddle.bottom(), rightPaddle.height )
if ( leftPaddle.left() < (ball.x + ball.radius) and leftPaddle.right() > (ball.x - ball.radius) ) and ( leftPaddle.top() < (ball.y + ball.radius) and leftPaddle.bottom() > (ball.y - ball.radius) ):
ball.bounce( leftPaddle.top(), leftPaddle.bottom(), leftPaddle.height )
#render half-field line
pygame.draw.line( SURFACE, WHITE, ( WIDTH/2, 0 ), ( WIDTH/2, HEIGHT ) )
#render the paddles
leftPaddle.render(SURFACE)
rightPaddle.render(SURFACE)
