cheat2

# goes through right boundary
if self.head.x > self.w - BLOCK_SIZE:
    self.head = Point(0, self.head.y)

# goes through left boundary
elif self.head.x < 0:
    self.head = Point(self.w - BLOCK_SIZE, self.head.y)

# goes through bottom boundary
elif self.head.y > self.h - BLOCK_SIZE:
    self.head = Point(self.head.x, 0)

# goes through top boundary
elif self.head.y < 0:
    self.head = Point(self.head.x, self.h - BLOCK_SIZE)