Goals: what you will make by the end of the day

1. to keep high score by write to a File

2. Automatically using Python to repeat tasks that we don’t want to do in live

3. email to a Client by name list

Add a High Score to the Snake Game

#rewire day20 snake game code

#scoreboard.py

from turtle import Turtle

ALIGNMENT = "center"
FONT = ("Arial,24,normal")

class Scoreboard(Turtle):
    def __init__(self):
        super().__init__()
        self.score = 0
        self.high_score = 0
        self.color("white")
        self.penup()
        self.goto(0,270)
        self.write(f"Score: {self.score}", align=ALIGNMENT, font=FONT)
        self.hideturtle()

    def increase_score(self):
        self.score+= 1
        self.update_scoreboard()

    def update_scoreboard(self):
        self.clear()
        self.write(f"Score: {self.score} High Score:{self.high_score}", align=ALIGNMENT, font=FONT)

    #TODO: day24 to keep high score 
    def reset(self):
        if self.score > self.high_score:
            self.high_score = self.score
        self.score = 0
        self.update_scoreboard()

    def game_over(self):
        self.goto(0,0)
        self.write("Game over", align=ALIGNMENT, font=FONT)

#snake.py

from turtle import Turtle
STARTING_POSITIONS = [(0, 0), (-20, 0), (-40, 0)]
MOVE_DISTANCE = 20
UP = 90
DOWN = 270
LEFT = 180
RIGHT = 0

class Snake:

    def __init__(self):
        self.segments = []
        self.create_snake()
        self.head = self.segments[0]

    def create_snake(self):
        for position in STARTING_POSITIONS:
            self.add_segment(position)

    def add_segment(self, position):
        new_segment = Turtle("square")
        new_segment.color("white")
        new_segment.penup()
        new_segment.goto(position)
        self.segments.append(new_segment)

    #TODO: day24 improve high score record to add reset() 
    #when game over to clear snake body and create new one with move old snake body to out of boundary
    def reset(self):
        for seg in self.segments:
            seg.goto(400,400)
        self.segments.clear()
        self.create_snake()
        self.head = self.segments[0]

    def extend(self):
        #add a new segment to the snake
        self.add_segment(self.segments[-1].position())

    #移動貪食蛇身體
    def move(self):
        for seg_num in range(len(self.segments) - 1, 0, -1):
            new_x = self.segments[seg_num - 1].xcor()
            new_y = self.segments[seg_num - 1].ycor()
            self.segments[seg_num].goto(new_x, new_y)
        self.head.forward(MOVE_DISTANCE)
    
    #貪食蛇不能回頭
    def up(self):
        if self.head.heading() != DOWN:
            self.head.setheading(UP)

    def down(self):
        if self.head.heading() != UP:
            self.head.setheading(DOWN)

    def left(self):
        if self.head.heading() != RIGHT:
            self.head.setheading(LEFT)

    def right(self):
        if self.head.heading() != LEFT:
            self.head.setheading(RIGHT)

#main.py

from turtle import Screen
from snake import Snake
import time
from food import Food
from scoreboard import Scoreboard

screen = Screen()
screen.setup(width=600, height=600)
screen.bgcolor("black")
screen.title("My Snake Game")
screen.tracer(0)

snake = Snake()
food = Food()
scoreboard = Scoreboard()

screen.listen()
screen.onkey(snake.up, "Up")
screen.onkey(snake.down, "Down")
screen.onkey(snake.left, "Left")
screen.onkey(snake.right, "Right")

game_is_on = True
while game_is_on:
    time.sleep(0.1)
    screen.update()
    snake.move()

    #Detech collision with food.
    if snake.head.distance(food) < 15:
        food.refresh()
        #increase snake's body length
        snake.extend()
        #increase score on board
        scoreboard.increase_score()

    #Detect collision with wall
    if snake.head.xcor() > 280 or snake.head.xcor() < -280 or snake.head.ycor() > 280 or snake.head.ycor() < -280:
        #game_is_on = False
        #scoreboard.game_over()
        #TODO: day24 improve high score record
        scoreboard.reset()
        snake.reset()

    #Detect collision with tail.
    for segment in snake.segments[1:]:
        if snake.head.distance(segment) < 10:
            #game_is_on = False
            #scoreboard.game_over()
            #TODO: day24 improve high score record
            scoreboard.reset()
            snake.reset()

screen.exitonclick()

How to Open, Read and Write to Files using the with Keyword

#save game score to a File and read it in next time when we open up snake program

#working with file system as open and read

#working with file system as write something to a file by write with mode w or a