Snake

import turtle
import time
import random

delay = 0.1

# Score
score = 0
height_score = 0


# Set up the screen
wn = turtle.Screen()
wn.title("Snake Game by Henry Laser")
wn.bgcolor("green")
wn.setup(width=600, height=600)
wn.tracer(0) # turns off the screen updates

# Snake Head
head = turtle.Turtle()
head.speed(0)
head.shape("square")
head.color("black")
head.penup()
head.goto(0,0)
head.direction = "stop"

# Snake food
food = turtle.Turtle()
food.speed(0)
food.shape("circle")
food.color("red")
food.penup()
food.goto(0, 100)

segments = []

# Pen
pen = turtle.Turtle()
pen.speed(0)
pen.shape("square")
pen.color("white")
pen.penup()
pen.hideturtle()
pen.goto(0, 260)
pen.write("SCORE: 0  HIGH SCORE: 0", align="center", font=("Courier", 24, "normal"))




# Functions
def go_up():
    if head.direction != "down":
        head.direction = "up"

def go_down():
    if head.direction != "up":
        head.direction = "down"

def go_left():
    if head.direction != "right":
        head.direction = "left"

def go_right():
    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)

# Keyboard bindings
wn.listen()
wn.onkeypress(go_up, "w")
wn.onkeypress(go_down, "s")
wn.onkeypress(go_left, "a")
wn.onkeypress(go_right, "d")




     # Main game loop
while True:
    wn.update()

    # Check with a collision with the border
    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"


        # Hide the segments
        for segments in segments:
            segments.goto(1000, 1000)

            # Clear the segments list
            segments = []

        #Reset the score
        score = 0
        pen.clear()
        pen.write("Score: {}  High Score: {}".format(score, height_score), align="center", font=("Courier", 24, "normal"))


    # Check for a collision with the food
    if head.distance(food) < 20:
       # Move the food to a random position
       x = random.randint(-290, 290)
       y = random.randint(-290, 290)
       food.goto(x, y)


# Add a segment
       new_segment = turtle.Turtle()
       new_segment.speed(0)
       new_segment.shape("square")
       new_segment.color("red")
       new_segment.penup()
       segments.append(new_segment)

# Inscrease the score
    score+=10

    if score > height_score:
       high_score = score

    pen.clear()
    pen.write("Score: {}  High Score: {}".format(score, height_score), align="center", font=("Courier", 24, "normal"))



    # Move the end segments first in reverse order
    for index in range(len(segments)-1, 0, -1):
       x = segments[index-1].xcor()
       y = segments[index-1].ycor()
       segments[index].goto(x, y)


# Move segment 0 to where the head is
    if len(segments) > 0:
        x = head.xcor()
        y = head.ycor()
        segments[0].goto(x, y)

    move()

# Check for head collision whit the body segments
    for segment in segments:
        if segment.distance(head) < 20:
            time.sleep(1)
            head.goto(0, 0)
            head.direction = "stop"

            # Hide the segments
            for segment in segments:
                segment.goto(1000, 1000)

            # Clear the segments list
            segments.clear()


    time.sleep(delay)