Chapter 10

import turtle # import the turtle module

import random

import time




# This function turns playerTurtle to the right by 90 degrees. It is

# called when the user presses the right arrow key.

def turn_right():
     playerTurtle.right(90)

def turn_left():
     playerTurtle.left(90)

def relocate_FoodTurtle():

    x = random.randint(-200,200)
    y = random.randint(-200,200)
    foodTurtle.penup()
    foodTurtle.goto(x,y)


def relocate_FoodTurtle():
    x = random.randint(-200,200)
    y = random.randint(-200,200)
    foodTurtle.penup()
    foodTurtle.goto(x,y)


playerTurtle = turtle.Turtle() # create a new turtle




# -- Main Section

window = turtle.Screen() # get the screen where turtles live

turtle.setup(500, 500) # set the screen to 500 x 500 in size

playerTurtle = turtle.Turtle() # create a new turtle

playerTurtle.shape("turtle") # set shape to turtle

playerTurtle.penup() # suspend drawing

foodTurtle = turtle.Turtle()

foodTurtle.shape("square") # set shape to square

foodTurtle.fillcolor("blue") # set the turtle fill color to blue

foodTurtle.speed(0) # set speed to 0, the fastest speed

foodTurtle.penup() # suspend drawing

foodTurtle.goto(100, 100) # move the turtle to 100, 100

window.onkey(turn_right, "Right") # call turn_right when Right pressed

window.onkey(turn_left, "Left")

window.listen()

speed = 1

blocks = 0

startTime = time.time()

game = True

while game == True:
    playerTurtle.forward(speed)
    if playerTurtle.distance(foodTurtle) <= 15:
         print("hit") # prints "hit" to the console screen
         relocate_FoodTurtle()
         blocks = blocks + 1
         if blocks%2 == 0:
              speed = speed + 1
    if playerTurtle.xcor() < -250 or playerTurtle.xcor() > 250 or playerTurtle.ycor() > 250 or playerTurtle.xcor() < -250:
          playerTurtle.goto(0,0)
    if blocks == 10:
          game = False

endTime = time.time()
print("Elapsed time: " + str(endTime – startTime))