Yılan Oyunu (Turtle Kütüphanesi)

import turtle
import random
import time

screen = turtle.Screen()
screen.title("YILAN OYUNU")
screen.setup(width=700, height=700)
screen.tracer(0)
screen.bgcolor("#1d1d1d")


turtle.speed(5)
turtle.pensize(4)
turtle.penup()
turtle.goto(-310,250)
turtle.pendown()
turtle.color("red")
turtle.forward(600)
turtle.right(90)
turtle.forward(500)
turtle.right(90)
turtle.forward(600)
turtle.right(90)
turtle.forward(500)
turtle.penup()
turtle.hideturtle()


score =0;
delay = 0.1


snake = turtle.Turtle()
snake.speed()
snake.shape("square")
snake.color("green")
snake.penup()
snake.goto(0,0)
snake.direction ='stop'


fruit = turtle.Turtle()
fruit.speed(0)
fruit.shape("square")
fruit.color("white")
fruit.penup()
fruit.goto(30,30)

old_fruit = []

scoring = turtle.Turtle()
scoring.color("white")
scoring.penup()
scoring.hideturtle()
scoring.goto(0,300)
scoring.write("Score: ", align="center", font=("Courier",24,"bold"))


def snake_go_up():
    if snake.direction != "down":
        snake.direction = "up"

def snake_go_down():
    if snake.direction != "up":
        snake.direction = "down"

def snake_go_left():
    if snake.direction != "right":
        snake.direction = "left"

def snake_go_right():
    if snake.direction != "left":
        snake.direction = "right"

def snake_move():
    if snake.direction == "up":
        y = snake.ycor()
        snake.sety(y + 20)
    if snake.direction == "down":
        y = snake.ycor()
        snake.sety(y - 20)
    if snake.direction == "left":
        x = snake.xcor()
        snake.setx(x - 20)
    if snake.direction == "right":
        x = snake.xcor()
        snake.setx(x + 20)


screen.listen()
screen.onkeypress(snake_go_up, "Up")
screen.onkeypress(snake_go_down, "Down")
screen.onkeypress(snake_go_left, "Left")
screen.onkeypress(snake_go_right, "Right")


while True:
    screen.update()

    if snake.distance(fruit) < 20:
        x = random.randint(-290, 270)
        y = random.randint(-240, 240)
        fruit.goto(x,y)
        scoring.clear()
        score += 1
        scoring.write("Score: {}".format(score), align="center", font=("Courier", 24,"bold"))
        delay -= 0.001

        new_fruit = turtle.Turtle()
        new_fruit.speed(0)
        new_fruit.shape("square")
        new_fruit.color("red")
        new_fruit.penup()
        old_fruit.append(new_fruit)


    for index in range(len(old_fruit)-1, 0, -1):
        a = old_fruit[index -1].xcor()
        b = old_fruit[index -1].ycor()

        old_fruit[index].goto(a,b)

    if len(old_fruit) > 0:
        a = snake.xcor()
        b = snake.ycor()
        old_fruit[0].goto(a, b)
    snake_move()


    if snake.xcor() > 280 or snake.xcor() < -300 or snake.ycor() > 240 or snake.ycor() < -240:
        time.sleep(1)
        screen.clear()
        screen.bgcolor("turquoise")
        scoring.goto(0,0)
        scoring.write("    Game Over \n Your score is {}".format(score), align="center", font=("Courier", 30,"bold"))


        for food in old_fruit:
            if food.distance(snake) < 20:
                time.sleep(1)
                screen.clear()
                screen.bgcolor("turquoise")
                scoring.goto(0, 0)
                scoring.write("    Game Over \n Your score is {}".format(score), align="center",font=("Courier", 30, "bold"))

    time.sleep(delay)

turtle.Terminator