import turtle
import time
import random

#variables

width = 600
height = 600
delay = 0.1
ran1 = -290
ran2 =  290
Color = ["red","grey","blue","purple","yellow","pink","green","brown"]

pen = turtle.Turtle()
pen.speed(0)
pen.shape("square")
pen.color("blue")
pen.penup()
pen.hideturtle()
pen.goto(0,260)
pen.write("Score: 0 High Score: 0",align = "center",font = ("Courier",24,"normal"))

#clases

class setup_screen:
	def __init__(self,t,c,w,h):
		self.wn = turtle.Screen()
		self.wn.title(t)
		self.wn.bgcolor(c)
		self.wn.setup(w,h)
		self.wn.tracer(0)
	def Listen(self):
		self.wn.listen()
		self.wn.onkeypress(snake.go_up,"w")
		self.wn.onkeypress(snake.go_down,"s")
		self.wn.onkeypress(snake.go_right,"d")
		self.wn.onkeypress(snake.go_left,"a")

class Snake(object):
	def __init__(self,Shape,Color):
		self.head = turtle.Turtle()
		self.head.speed(0)
		self.head.shape(Shape)
		self.head.color(Color)
		self.head.penup()#doesn't draw
		self.head.goto(0,0)#align center
		self.head.direction = "stop"
		self.segment = []
		self.score = 0
		self.high_score = 0
	def move(self):
		if self.head.direction == "up":
			self.y = self.head.ycor()
			self.head.sety(self.y + 20)
		if self.head.direction == "down":
			self.y = self.head.ycor()
			self.head.sety(self.y - 20)
		if self.head.direction == "right":
			self.x = self.head.xcor()
			self.head.setx(self.x + 20)
		if self.head.direction == "left":
			self.x = self.head.xcor()
			self.head.setx(self.x - 20)
	def go_up(self):
		if self.head.direction != "down":
			self.head.direction = "up"
		else:
			go_up()

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

	def go_right(self):
		if self.head.direction != "left":
			self.head.direction = "right"
		else:
			go_right()

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

	def Grow(self):
		if self.head.distance(FOOD.food) < 20 :
			self.x = random.randint(-289,289)
			self.y = random.randint(-289,289)
			if self.x % 2 == 1:
				self.x = self.x - 1
			if self.y % 2 == 1:
				self.y = self.y - 1
			FOOD.food.goto(self.x,self.y)
			self.score = self.score + 10
			if self.score > self.high_score :
				self.high_score = self.score
			pen.clear()
			pen.write("Score: {} High Score: {}".format(self.score,self.high_score),align = "center",font = ("Courier",24,"normal"))

			self.new_segment = turtle.Turtle()
			self.new_segment.speed(0)
			self.new_segment.shape("square")
			self.new_segment.color(Color[random.randint(0,len(Color) - 1)])
			self.new_segment.penup()
			self.segment.append(self.new_segment)

		for index in range(len(self.segment) - 1,0,-1):
			self.x = self.segment[index - 1].xcor()
			self.y = self.segment[index - 1].ycor()
			self.segment[index].goto(self.x,self.y)

		if len(self.segment) > 0:
			self.x = self.head.xcor()
			self.y = self.head.ycor()
			self.segment[0].goto(self.x,self.y)
	def GameOver(self):
		if self.head.xcor() > 300 or self.head.ycor() > 300 or self.head.ycor() <-300 or self.head.xcor() <-300:
			time.sleep(1)
			self.head.goto(0,0)
			self.head.direction = "stop"
			for s in self.segment :
				s.goto(1000,1000)
			self.segment.clear()
			self.score  = 0
			pen.clear()
			pen.write("Score: {} High Score: {}".format(self.score,self.high_score),align = "center",font = ("Courier",24,"normal"))
		for s in self.segment:
			if s.distance(self.head) < 20:
				time.sleep(1)
				self.head.goto(0,0)
				self.head.direction = "stop"
				for d in self.segment :
					d.goto(1000,1000)
				self.segment.clear()
				self.score = 0
				pen.clear()
			pen.write("Score: {} High Score: {}".format(self.score,self.high_score),align = "center",font = ("Courier",24,"normal"))

class Food(object):
	def __init__(self,Shape,Color):
		self.food = turtle.Turtle()
		self.food.speed(0)
		self.food.shape(Shape)
		self.food.color(Color)
		self.food.penup()
		self.food.goto(0,100)

FOOD = Food("square","red")
snake = Snake("square","white")
screen = setup_screen("Snake Game","black",width,height)
screen.Listen()

while True:
	screen.wn.update()

	snake.Grow()

	snake.move()

	snake.GameOver()

	if snake.head.distance(FOOD.food) < 20:
		delay -= 0.005

	if snake.score == 0:
		delay = 0.1

	time.sleep(delay)

wn.mainloop()