from tkinter import *
import random

#Globals
WIDTH = 800
HEIGHT = 600
SEG_SIZE = 20
IN_GAME = True

def create_block():
    global BLOCK
    posx=SEG_SIZE*random.randint(1,(WIDTH-SEG_SIZE)/SEG_SIZE)
    posy=SEG_SIZE*random.randint(1,(HEIGHT-SEG_SIZE)/SEG_SIZE)
    BLOCK=c.create_oval(posx,posy, posx+SEG_SIZE,posy+SEG_SIZE, fill='red')

class Snake(object):
    def __init__(self,segments):
        self.segments=segments
        self.mapping={"Down":(0,1),
                      "Right":(1,0),
                      "Left":(-1,0),
                      "Up":(0,1)}
        self.vector=self.mapping["Right"]
class Segment(object):
    def __init__(self,x,y):
        self.instance=c.create_rectangle(x,y, x+SEG_SIZE,y+SEG_SIZE,fill="white")

#Setting up window
root=Tk()
root.title("Snake")
c=Canvas(root,width=WIDTH,height=HEIGHT,bg="#003300")
c.grid()
# catch keypressing
c.focus_set()
segments=[Segment(SEG_SIZE,SEG_SIZE),
          Segment(SEG_SIZE*2,SEG_SIZE),
          Segment(SEG_SIZE*3,SEG_SIZE)]
create_block()
root.mainloop()