如何写一组生命数并使特定的gif在python turtle中发生时消失？

Question

我做了一个简单的蟒蛇乌龟游戏，玩家必须收集屏幕上随机生成的物品，但每当它碰到一个受限制的物品时，我希望它失去一条生命。我为第一次直播设置了它，但我不太确定如何让它在其他两次直播中发挥作用。这是我为第一个所做的：

# there's 3 lives in total

live3 = trtl.Turtle()
live3.penup()
window.addshape('live3.gif') # picture of  a heart representing one life
live3.shape('heart2.gif')
live3.goto(0, -50)

def find_collosion_with_restricted():
  global playersize
  between_distance = 5
  px, py = player.pos()
  rx, ry = restricted_point.pos() # coords of the item the player can't touch
  distance = math.sqrt((px - rx)**2 + (py - ry)**2) # finds distance between to see if they touch
  if distance < between_distance:
    live3.hideturtle()
    

我怎么才能做到这一点，如果它达到另一个限制值，第二颗心会重生，然后第三次生命也会重生。

Answer 1

你可以这样做：

lives = (life1, life2, life3)
n_of_lives = len(lives)

然后：

if collided_with_restricted:
    n_of_lives -= 1
    lives[n_of_lives].hideturtle()

Answer 2

# there are 3 lives in total
lives = []

for i in range(3):
  life = trtl.Turtle()
  life.penup()
  window.addshape('heart2.gif') # picture of a heart representing one life
  life.shape('heart2.gif')
  life.goto((-i * 30), -50)
  lives.append(life)

def find_collision_with_restricted():
  global playersize
  between_distance = 5
  px, py = player.pos()
  for point in restricted_points: # list of coordinates of the restricted points
    rx, ry = point
    distance = math.sqrt((px - rx)**2 + (py - ry)**2) # finds distance between to see if they touch
    if distance < between_distance:
      life = lives.pop()
      life.hideturtle()
      if not lives:
        print("Game over") # display game over message when all lives are lost