Snake Game score not adding - turtle-graphics

Question

This snake game code. I want to add the system score in this game. So that each time the snake eating his score would be increased. But if the snake does not get food score will not increase.
How do I go about displaying the current score?
this is :
""" A simple snake game using Turtle Graphics. """
import turtle
import math
import random
WIDTH = 500
HEIGHT = 500
FOOD_SIZE = 10
DELAY = 100 # milliseconds
offsets = {
"up": (0, 20),
"down": (0, -20),
"left": (-20, 0),
"right": (20, 0)
}
scores are not updating
def addscore():
global score
score += 1
def reset():
global snake, snake_direction, food_pos, pen
snake = [[0, 0], [0, 20], [0, 40], [0, 60], [0, 80]]
snake_direction = "up"
food_pos = get_random_food_pos()
food.goto(food_pos)
#screen.update() Only needed if we are fussed about drawing food before next call to `draw_snake()`.
move_snake()
def move_snake():
global snake_direction
# Next position for head of snake.
new_head = snake[-1].copy()
new_head[0] = snake[-1][0] + offsets[snake_direction][0]
new_head[1] = snake[-1][1] + offsets[snake_direction][1]
# Check self-collision
if new_head in snake[:-1]: # Or collision with walls?
reset()
else:
# No self-collision so we can continue moving the snake.
snake.append(new_head)
# Check food collision
if not food_collision():
snake.pop(0) # Keep the snake the same length unless fed.
wrapping up
# Allow screen wrapping
if snake[-1][0] > WIDTH / 2:
snake[-1][0] -= WIDTH
elif snake[-1][0] < - WIDTH / 2:
snake[-1][0] += WIDTH
elif snake[-1][1] > HEIGHT / 2:
snake[-1][1] -= HEIGHT
elif snake[-1][1] < -HEIGHT / 2:
snake[-1][1] += HEIGHT
# Clear previous snake stamps
pen.clearstamps()
# Draw snake
for segment in snake:
pen.goto(segment[0], segment[1])
pen.stamp()
# Refresh screen
screen.update()
# Rinse and repeat
turtle.ontimer(move_snake, DELAY)
def food_collision():
global food_pos
if get_distance(snake[-1], food_pos) < 20:
food_pos = get_random_food_pos()
food.goto(food_pos)
return True
return False
def get_random_food_pos():
x = random.randint(- WIDTH / 2 + FOOD_SIZE, WIDTH / 2 - FOOD_SIZE)
y = random.randint(- HEIGHT / 2 + FOOD_SIZE, HEIGHT / 2 - FOOD_SIZE)
return (x, y)
def get_distance(pos1, pos2):
x1, y1 = pos1
x2, y2 = pos2
distance = ((y2 - y1) * 2 + (x2 - x1) * 2) ** 0.5
return distance
def go_up():
global snake_direction
if snake_direction != "down":
snake_direction = "up"
def go_right():
global snake_direction
if snake_direction != "left":
snake_direction = "right"
def go_down():
global snake_direction
if snake_direction != "up":
snake_direction = "down"
def go_left():
global snake_direction
if snake_direction != "right":
snake_direction = "left"
# Screen
screen = turtle.Screen()
screen.setup(WIDTH, HEIGHT)
screen.title("Snake")
screen.bgcolor("green")
screen.setup(500, 500)
screen.tracer(0)
# Pen
pen = turtle.Turtle("square")
pen.penup()
pen.hideturtle()
pen.goto(0, 250)
pen.write("Score : 0 High Score : 0", align="center", font=("candara", 24, "bold"))
# Food
food = turtle.Turtle()
food.shape("circle")
food.color("red")
food.shapesize(FOOD_SIZE / 20) # Default size of turtle "square" shape is 20.
food.penup()
# Event handlers
screen.listen()
screen.onkey(go_up, "Up")
screen.onkey(go_right, "Right")
screen.onkey(go_down, "Down")
screen.onkey(go_left, "Left")
# Let's go
reset()
turtle.done()

Answer 1

It's defined, but you have to call your addscore() function. Replace
if not food_collision():
snake.pop(0)
with
if food_collision():
addscore()
else:
snake.pop(0)

Answer 2

You can just add this code to your game. It will write a score:
score = 0
#Creating Score Writer
turtle.hideturtle()
turtle.penup()
turtle.color("white")
turtle.goto(-300,300)
turtle.write(f"Score = {score}", font=("Arial",16,"normal"))
You also don't need a screen.setup() for this.
You can change the score variable. Every time you want the text to update you write
turtle.clear()
turtle.write(f"Score = {score}", font=("Arial",16,"normal"))