import pygame

class Cell:
    arena = None

    def __init__(self, type, startpos):
        self.type = type
        self.x = startpos[0]
        self.y = startpos[1]

    def cell_up(self):
        self.y += 1
import pygame

class Cell:
    arena = None

    def __init__(self, type, startpos):
        self.type = type
        self.x = startpos[0]
        self.y = startpos[1]

    def cell_up(self):
        self.y += 1