snake game using Turtle

 import turtle

import random

import time

delay = 0.1

score = 0

high_score = 0

wn = turtle.Screen()

wn.title("Snake Game")

wn.bgcolor("blue")

# width and height

wn.setup(width=600,height=600)

wn.tracer(0)

# head of the snake

head = turtle.Turtle()

head.shape("square")

head.color("white")

head.penup()

head.goto(0,0)

head.direction = "stop"

# food in the game 

food = turtle.Turtle()

colors = random.choice(["red","green"])

shapes = random.choice(["square","circle"])

food.speed(0)

food.shape(shapes)

food.color(colors)

food.penup()

food.goto(0,100)

pen = turtle.Turtle()

pen.speed(0)

pen.shape("square")

pen.color("white")

pen.penup()

pen.hideturtle()

pen.goto(0,250)

pen.write("Score:0  High Score:0",align="center",font=("candara",24,"bold"))

# assign key directions

def goup():

    if head.direction != "down":

        head.direction = "up"

def godown():

    if head.direction != "up":

        head.direction = "down"

def goleft():

    if head.direction != "right":

        head.direction = "left"

def goright():

    if head.direction != "left":

        head.direction = "right"

def move():

    if head.direction == "up":

        y = head.ycor()

        head.sety(y+20)

    if head.direction == "down":

        y = head.ycor()

        head.sety(y-20)

    if head.direction == "left":

        x = head.xcor()

        head.setx(x-20)

    if head.direction == "right":

        x = head.xcor()

        head.setx(x+20)

wn.listen()

wn.onkeypress(goup,"w")

wn.onkeypress(godown,"s")

wn.onkeypress(goleft,"a")

wn.onkeypress(goright,"d")

segments = []

# Main Gameplay

while True:

    wn.update()

    if head.xcor() > 290 or head.xcor() < -290 or head.ycor() > 290 or head.ycor() < -290:

        time.sleep(1)

        head.goto(0, 0)

        head.direction = "Stop"

        colors = random.choice(['red', 'blue', 'green'])

        shapes = random.choice(['square', 'circle'])

        for segment in segments:

            segment.goto(1000, 1000)

        segments.clear()

        score = 0

        delay = 0.1

        pen.clear()

        pen.write("Score : {} High Score : {} ".format(

            score, high_score), align="center", font=("candara", 24, "bold"))

    if head.distance(food) < 20:

        x = random.randint(-270, 270)

        y = random.randint(-270, 270)

        food.goto(x, y)

        # Adding segment

        new_segment = turtle.Turtle()

        new_segment.speed(0)

        new_segment.shape("square")

        new_segment.color("orange") # tail colour

        new_segment.penup()

        segments.append(new_segment)

        delay -= 0.001

        score += 10

        if score > high_score:

            high_score = score

        pen.clear()

        pen.write("Score : {} High Score : {} ".format(

            score, high_score), align="center", font=("candara", 24, "bold"))

    # Checking for head collisions with body segments

    for index in range(len(segments)-1, 0, -1):

        x = segments[index-1].xcor()

        y = segments[index-1].ycor()

        segments[index].goto(x, y)

    if len(segments) > 0:

        x = head.xcor()

        y = head.ycor()

        segments[0].goto(x, y)

    move()

    for segment in segments:

        if segment.distance(head) < 20:

            time.sleep(1)

            head.goto(0, 0)

            head.direction = "stop"

            colors = random.choice(['red', 'blue', 'green'])

            shapes = random.choice(['square', 'circle'])

            for segment in segments:

                segment.goto(1000, 1000)

            segment.clear()

            score = 0

            delay = 0.1

            pen.clear()

            pen.write("Score : {} High Score : {} ".format(

                score, high_score), align="center", font=("candara", 24, "bold"))

    time.sleep(delay)

wn.mainloop()