# function to setup a standard set of bowling pins
# preconditions: at origin with 10 beepers in bag
# postconditions: at (6,6, South) with all pins deployed
def setUpPins():
    moveToStart()
    layRowOne()
    layRowTwo()
    layRowThree()
    layRowFour()
    moveOutOfTheWay()
    
    
# function to move Karel from origin to location of head pin
# preconditions: At (1,1,East) w/10 beepers in bag
# postconditions: At (6,2,North) Location of head pin
def moveToStart():
    for i in range(5):
        move()
    turn_left()
    move()
    
# function to move to ending location after all pins set up
# preconditions: At right edge of imaginary row 5
# postconditions:  at (6,6, South) with all pins deployed
def moveOutOfTheWay():
    turn_left()
    for i in range(4):
        move()
    turn_left()
    
# function to lay the first row of pins
# preconditions: At (6,2,North) w/10 beepers in bag
# postconditions: At (7,3, North) w/9 beepers in bag
def layRowOne():
    put_beeper()
    move()
    turn_right()
    move()
    turn_left()
    
# function to lay the second row of pins
# preconditions: At (7,3, North) w/9 beepers in bag
# postconditions: At (8,4, North) w/7 beepers in bag
def layRowTwo():
    turn_left()
    for i in range(2):
        put_beeper()
        move()
        move()
    turn_around()
    for i in range(5):
        move()
    turn_left()
    move()

# function to lay the third row of pins
# precondition: At (8,4, North) w/7 beepers in bag
# postconditions: At (9,5, NOrth) w/4 beepers in bag
def layRowThree():
    turn_left()
    for i in range(3):
        put_beeper()
        move()
        move()
    turn_around()
    for i in range(7):
        move()
    turn_left()
    move()


# function to lay the fourth row of pins
# precondition: At (9,5, North) w/4 beepers in bag
# postconditions: At (10,6, NOrth) w/0 beepers in bag
def layRowFour():
    turn_left()
    for i in range(4):
        put_beeper()
        move()
        move()
    turn_around()
    for i in range(9):
        move()
    turn_left()
    move()


#utility functions
def turn_around():
    turn_left()
    turn_left()
        
def turn_right():
    for i in range(3):
        turn_left()
        
        
        
        
# program to set up bowling pins
set_trace_style(colour='white')
setUpPins()
turn_off()