import turtle
import time
import random
from tkinter import *

delay = 0.12

c1 = "Up" and "w"
c2 = "Down" and "s"
c3 = "Left" and "a"
c4 = "Right" and "d"

print("Welcome To Snake")
print("")
print("This Is The Config")

print("")

print("For Arrow Keys Type 'Up' (Up Arrow) 'Down' (Down_Arrow) 'Left' (Left_Arrow) 'Right' (Right_Arrow)")

print("")

c1 = input(str("Enter A Key To Move UP >> "))
c2 = input(str("Enter A Key To Move DOWN >> "))
c3 = input(str("Enter A Key To Move LEFT >> "))
c4 = input(str("Enter A Key To Move Right >> "))

# Score
score = 0

try:
    with open("hs.txt", "r") as f:
        high_score = score
        high_score = int(high_score)
except:
    f = open("hs.txt", "w")
    f.write("0")
    high_score = 0
    f.close()

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

# Snake head
head = turtle.Turtle()
head.speed(0)
head.shape("circle")
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("purple")
pen.penup()
pen.hideturtle()
pen.goto(0, 260)
pen.write("Score: {}  High Score: {}".format(score, high_score), 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, c1)
wn.onkeypress(go_down, c2)
wn.onkeypress(go_left, c3)
wn.onkeypress(go_right, c4)

# Main game loop
while True:
    wn.update()
	
    # Check for collision for 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"
        with open("hs.txt", "a+") as f:
            f.write(str(high_score) + "\n")

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

        # Clear segment list
        segments.clear()

        # Reset the score
        score = 0

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

        # Reset the delay
        delay = 0.12

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

        # Add a segments
        new_segment = turtle.Turtle()
        new_segment.speed(0)
        new_segment.shape("circle")
        new_segment.color("grey")
        new_segment.penup()
        segments.append(new_segment)

        # Shorten the delay
        delay -= 0.001

        # Increase the score
        score += 1

        if score > high_score:
            high_score = score
        
        pen.clear()
        pen.write("Score: {}  High Score: {}".format(score, high_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 with the body segments
    for segment in segments:
        if segment.distance(head) < 20:
            time.sleep(1)
            head.goto(0,0)
            head.direction = "stop"
            with open("hs.txt", "a+") as f:
                f.write(str(high_score) + "\n")
        
            # Hide the segments
            for segment in segments:
                segment.goto(1000, 1000)
        
            # Clear the segments list
            segments.clear()

            # Reset the score
            score = 0

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

            # Reset the delay
            delay = 0.12

	
    time.sleep(delay)


wn.mainloop()
    
