OK, addtail is called after show if i collected a fruit
snake.keyPressed()
snake.logic()
prevH = snake.vec
fruit.Show()
snake.Show()
if dist(snake.vec.x,snake.vec.y,fruit.vec.x,fruit.vec.y) < 12.5:
fruit.respawn()
snake.score += 1
#i currently remved addtail but it was here
# snake.tail.append[]