Days20. 뱀게임2 - 프로그램의 클래스화

 

 

프로그램을 클래스로 분해해서 만들어보자.

*snake.py        *food.py        *scoreboard.py

 

[main.py] 

from turtle import Screen, Turtle
from snake import Snake
import time
screen = Screen()
screen.setup(width=600, height=600)
screen.bgcolor("black")
screen.tracer(0)
screen.title("kio's snake game - ver.20220223(e first one)")
snake = Snake()
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:
    screen.update()
    time.sleep(0.2)
    snake.move()
screen.exitonclick()

 

[snake.py]

from turtle import Turtle
STARTING_POSITIONS = [(0, 0), (-20, 0), (-40, 0)]
COLOR = ["red", "orange", "yellow", "green", "blue", "navy", "purple"]
MOVING_DISTANCE = 20
UP = 90
DOWN = 270
LEFT = 180
RIGHT = 0
class Snake:
    def __init__(self):
        self.turtles = []
        self.create_snake()
        self.head = self.turtles[0]
    def create_snake(self):
        color_index = 0
        for pos in STARTING_POSITIONS:
            new_turtle = Turtle(shape="square")
            new_turtle.color(COLOR[color_index])
            new_turtle.pu()
            new_turtle.setpos(pos)
            color_index += 1
            self.turtles.append(new_turtle)
    def move(self):
        for tut_num in range(len(self.turtles)-1, 0, -1):          #(start=2, stop=0, step=-1)
            new_x = self.turtles[tut_num - 1].xcor()
            new_y = self.turtles[tut_num - 1].ycor()
            self.turtles[tut_num].goto(new_x,new_y)
        self.head.fd(MOVING_DISTANCE)
    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)