# a simple function that flashes the robot's back light a specified number of times
# Notice the use of wait to create a pause
def flashLight(times):
    for i in range(times):
        setLED("back",1)
        wait(0.55)
        setLED("back",0)
        wait(0.25)

def senseLoop():
    # getLight() is a function that gives back three values
    # Here we save them in three variables.
    # This is a really unusual line of code, so don't worry if it doesn't make much sense.
    # Remember variables from Scratch, though? They store data.
    rightSensor, centerSensor, leftSensor = getLight()

    # Print out all three sensor values
    print "Light Sensor Values:", rightSensor, centerSensor, leftSensor;

    # If the right sensor is covered
    if rightSensor > 2000:
        # You can write a song using note names and beat lengths
        playSong(makeSong("c 1; g 1/4; a 1/2; e 3/4;") )
        # Make the back LED flash
        flashLight(5)

    # If the center sensor is covered
    if centerSensor > 5000:
        print "BAGELS BAGELS GGRRAA" # don't ask; it's late
        wait(0.25)
        beep(0.25,440,880)

    # If the left sensor is covered
    if leftSensor > 2000:
        turnLeft(1,0.5)

# Continue sensing for 20 seconds
while(timeRemaining(20)):
    senseLoop()