import turtle
import time
#screen
delay=0.1
wn=turtle.Screen()
wn.title("Snake game by @Misheel")
wn.bgcolor("white")
wn.setup(width=600,height=600)
wn.tracer(0)
#snakehead

head=turtle.Turtle()
head.speed(0)
head.shape("square")
head.color("black")
head.penup()
head.goto(0,0)
head.direction="up"
def go_up():
    head.direction="up"
def go_down():
    head.direction="down"
def go_left():
    head.direction="left"
def go_right():
    head.direction="right"
def move():
    if head.direction == "up":
        y=head.ycor()
        head.sety(y+20)

def move():
    if head.direction == "down":
        y=head.ycor()
        head.sety(y-20)
def move():
    if head.direction == "left":
        x=head.ycor()
        head.setx(x-20)
def move():
    if head.direction == "right":
        x=head.ycor()
        head.setx(x+20)
wn.listen()
wn.onkeypress(go_up,"w")
wn.onkeypress(go_down,"s")
wn.onkeypress(go_left,"a")
wn.onkeypress(go_right,"d")


while True:
    wn.update()
    move()
    time.sleep(delay)

wn.mailoop()