# -*- coding: utf-8 -*-
from tkinter import *
import random
import time

class Ball:
	def __init__(self, canvas, paddle, score, color):
		self.canvas = canvas
		self.paddle = paddle
		self.score = score
		self.id = canvas.create_oval(10,10,25,25, fill=color)
		self.canvas.move(self.id, 245,100)
		starts = [-3, -2, -1, 1, 2, 3]
		random.shuffle(starts)
		self.x = starts[0]
		self.y = -3
		self.canvas_height = self.canvas.winfo_height()
		self.canvas_width = self.canvas.winfo_width()
		self.hit_bottom = False

	def hit_paddle(self, pos):
		paddle_pos = self.canvas.coords(self.paddle.id)
		if pos[2] >= paddle_pos[0] and pos[0] <= paddle_pos[2]:
			if pos[3] >= paddle_pos[1] and pos[3] <= paddle_pos[3]:
		#accelerate the ball
		#the ball to speed up if it’s travelling in the same horizontal direction when it
		#hits the paddle, and slow down if it’s going in the opposite horizontal direction. 
		#In order to do this, the left-right (horizontal) speed of
		#the paddle should be added to the horizontal speed of the ball
				self.x += self.paddle.x
				self.score.hit()
				return True
			return False

	def draw(self):
		self.canvas.move(self.id, self.x, self.y)
		pos = self.canvas.coords(self.id)
		if pos[1] <= 0:
			self.y = 3
		if pos[3] >= self.canvas_height:
			self.hit_bottom = True
		if self.hit_paddle(pos) == True:
			self.y = -3
		if pos[0] <= 0:
			self.x = 3
		if pos[2] >= self.canvas_width:
			self.x = -3

class Paddle:
	def __init__(self, canvas, color):
		self.canvas = canvas
		self.id = canvas.create_rectangle(0,0,100,10, fill=color)
		self.canvas.move(self.id, 200, 300)
		self.x = 0
		self.canvas_width = self.canvas.winfo_width()
		self.started = False
		self.canvas.bind_all('<KeyPress-Left>', self.turn_left)
		self.canvas.bind_all('<KeyPress-Right>', self.turn_right)
		self.canvas.bind_all('<Button-1>',self.start_game)

	def turn_left(self, evt):
		self.x = -2
	def turn_right(self, evt):
		self.x = 2

	def start_game(self, evt):
		self.started = True

	def draw(self):
		self.canvas.move(self.id, self.x, 0)
		pos = self.canvas.coords(self.id)
		if pos[0] <= 0:
			self.x = 0
		elif pos[2] >= self.canvas_width:
			self.x = 0

class Score:
	def __init__(self, canvas, color):
		self.score = 0
		self.canvas = canvas
		self.id = canvas.create_text(450, 10, text=self.score, fill=color)
	def hit(self):
		self.score += 1
		self.canvas.itemconfig(self.id, text=self.score)

tk = Tk()
tk.title("Game")
tk.resizable(0, 0)
tk.wm_attributes("-topmost", 1)
canvas = Canvas(tk, width=500, height=400, bd=0, highlightthickness=0)
canvas.pack()
tk.update()

score = Score(canvas, 'purple')
paddle = Paddle(canvas, 'blue')
ball = Ball(canvas,paddle,score, 'red')
game_over_text = canvas.create_text(250, 200, text='GAME OVER !!', state='hidden')

while 1:
	if ball.hit_bottom == False and paddle.started == True:
		ball.draw()
		paddle.draw()
	if ball.hit_bottom == True:
		time.sleep(1)
		canvas.itemconfig(game_over_text, fill='red',font=('Helvetica', 20), state='normal')
tk.update_idletasks() 
tk.update()
time.sleep(0.01)
