Modular Graphics

example.py

class Game(AnimationClass):
  def __init__:
    self.gameObjects = ...
    
  def onTimerFired:
    for obj in self.gameObjects:
      obj.update()
      for otherObj in self.gameObjects:
        if obj == otherObj: continue
        if obj.collide(otherObj):
          handle collision here...
  
  def redrawAll:
    for obj in self.gameObjects:
      obj.draw(self.canvas)
  
  def onKeyPressed:
    figure out what we want to do
    if involvesPlayer:
      player.doThing
    elif involves something else
      self.doThatThing

class GameObject(object):
  def draw(self, canvas):
    raise NotImplementedError
  
  def update(self):
    self.x += self.dx
    self.y += self.dy
    other updating here...
  
  def collide(self, other):
    return true if bounding boxes collide

class Player(GameObject):
  implement player-specific stuff

class UserControlledPlayer(GameObject):
  implement stuff for the player controlled by arrow keys

class Zombie(Player):
  implemented zombie stuff, maybe subclass this for different zombies

class Obstacle(GameObject):
  implement obstacle-specific stuff