#Einfaches Ping-Pong Spiel basier auf GUI(Tkinter)

#Authors : Milad Shirvani Filabadi, Kai Zhang,Yuan Wei

#08.11.2017

#Stufe 1 - Eigenschaften und Funktionen der Ball definieren

#Stufe 2 - Eigenschaften und Funktionen der Paddle definieren

#Stufe 3 - Fenster und canvas erstellen für zeichnen

#Stufe 4 - Animation Schleife

#Stufe 5 - Game Over


from tkinter import *
import random
import time

# Eigenschaften und Funktionen der Ball definieren

class Ball:
    def __init__(self, canvas, color, size, paddle):
        self.canvas = canvas
        self.paddle = paddle
        self.id = canvas.create_oval(10, 10, size, size, fill=color)
        self.canvas.move(self.id, 245, 100)
        self.xspeed = random.randrange(-3,3)
        self.yspeed = -1
        self.hit_bottom = False
        self.score = 0

    def draw(self):
        self.canvas.move(self.id, self.xspeed, self.yspeed)
        pos = self.canvas.coords(self.id)
        if pos[1] <= 0:
            self.yspeed = 3
        if pos[3] >= 400:
            self.hit_bottom = True
        if pos[0] <= 0:
            self.xspeed = 3
        if pos[2] >= 500:
            self.xspeed = -3
        if self.hit_paddle(pos) == True:
            self.yspeed = -3
            self.xspeed = random.randrange(-3,3)
            self.score += 1

    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]:
                return True
        return False

# Eigenschaften und Funktionen der Paddle definieren
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.xspeed = 0
        self.canvas.bind_all('<KeyPress-Left>', self.move_left)
        self.canvas.bind_all('<KeyPress-Right>', self.move_right)

    def draw(self):
        self.canvas.move(self.id, self.xspeed, 0)
        pos = self.canvas.coords(self.id)
        if pos[0] <= 0:
            self.xspeed = 0
        if pos[2] >= 500:
            self.xspeed = 0

    def move_left(self, evt):
        self.xspeed = -2
    def move_right(self, evt):
        self.xspeed = 2

# Fenster und canvas erstellen für zeichnen
tk = Tk()
tk.title("Ping-Pong Spiel")
canvas = Canvas(tk, width=500, height=400, bd=0, bg='papaya whip')
canvas.pack()
label = canvas.create_text(5, 5, anchor=NW, text="Punkt: 0")
tk.update()
paddle = Paddle(canvas, 'blue')
ball = Ball(canvas, 'red', 25, paddle)

# Animation Schleife
while ball.hit_bottom == False:
    ball.draw()
    paddle.draw()
    canvas.itemconfig(label, text="Punkt: "+str(ball.score))
    tk.update_idletasks()
    tk.update()
    time.sleep(0.01)

# Game Over
go_label = canvas.create_text(250,200,text="GAME OVER",font=("Helvetica",30))
tk.update()