import sys, time, math
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *

import os
startDir = os.getcwd() + os.sep

flashScreen = 0
prevSine = 1
height = 0

def draw():
    global flashScreen
    if flashScreen > 0:
        glClearColor(1, 1, 0, 0)
        flashScreen -= 1
    else:
        glClearColor(0, 0, 0, 0)
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
    
    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluPerspective(50.0, 1.0, 1.0, 100.0)
    glMatrixMode(GL_MODELVIEW)

    glLoadIdentity()
    glTranslatef(0.0, -3.0, -10)
    
    glTranslatef(0, height, 0)
    glutSolidTeapot(2)
    
    glutSwapBuffers()


def keyboard(key, x, y):
    if key == chr(27):
        sys.exit(0)

def update():
    global prevSine, height, flashScreen
    sine = math.sin(time.time())
    height = math.fabs(sine*5)
    if sine * prevSine <= 0:
        flashScreen = 2
        boingSound.play()
    prevSine = sine
    glutPostRedisplay()

glutInit([])
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH)
glutInitWindowSize(400,400)
glutCreateWindow(sys.argv[0])
glutDisplayFunc(draw)
glutKeyboardFunc(keyboard)
glutIdleFunc(update)
glEnable(GL_DEPTH_TEST)
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)

import pygame
pygame.mixer.init()
boingSound = pygame.mixer.Sound(startDir + "boing.wav")

glutMainLoop()