使用self.image和current_frame在pygame中为敌人的精灵动画

Question

我想在pygame中为一个视频游戏创造一个TRUMP敌人的动画。我已经加载了所有图像，我希望让他随机移动。我很难让敌人的TRUMP角色的图像动画。我可以得到他的初始框架，但之后我迷路了。您将在animate2函数的代码中看到问题区域。
我很困惑我将如何使用current_frame2或self.image来更新他的精灵。有谁知道如何继续？

class TRUMP(pg.sprite.Sprite): 
    def __init__(self, game): 
     pg.sprite.Sprite.__init__(self) 
     self.game = game 
     self.current_frame2 = 0 
     self.last_update2 = 0 
     self.load_images() 
     self.animate2() 

     self.image = self.TRUMP_fingers_l[0] 
     self.rect = self.image.get_rect() 
     self.rect.center = (WIDTH *3/4), (589) 
     self.pos = vec((WIDTH/2), (HEIGHT/2)) 
     self.vel = vec(0, 0) 
     self.acc = vec(0, 0) 

     self.screen = pg.display.set_mode((WIDTH, HEIGHT)) 
     self.clock = pg.time.Clock() 

    def load_images(self): 

     self.TRUMP_fingers_l = [self.game.spritesheet.get_image(503, 1, 248, 559)] 
     for frame in self.TRUMP_fingers_l: 
      frame.set_colorkey(BLACK) 
     self.TRUMP_walk1_l = [self.game.spritesheet.get_image(643, 562, 249, 448)] 
     self.TRUMP_walk2_l = [self.game.spritesheet.get_image(894, 474, 249, 448)] 
     self.TRUMP_hailing = [self.game.spritesheet.get_image(1, 571, 248, 439)] 
     self.TRUMP_throwing = [self.game.spritesheet.get_image(753, 1, 248, 471)] 
     self.TRUMP_smug = [self.game.spritesheet.get_image(252, 1, 249, 562)] 
     self.TRUMP_flexing_l = [self.game.spritesheet.get_image(1, 1, 249, 568)] 

    def animate2(self): 

     now = pg.time.get_ticks() 
     if now - self.last_update2 > 200: 
      self.last_update2 = now 
      self.current_frame2 = self.TRUMP_hailing[0] 
      self.image = self.TRUMP_hailing[0] 

Answer 1

在我看来，你只需要一个index变量（如定时器正常工作），你可以通过图像列表递增到周期。使用模% len(self.TRUMP_hailing)将索引保持在正确的范围内。

# In the __init__ method: 
    self.index = 0 

def animate2(self): 
    now = pg.time.get_ticks() 
    if now - self.last_update2 > 200: 
     self.index += 1 
     self.index %= len(self.TRUMP_hailing) 
     self.last_update2 = now 
     self.current_frame2 = self.TRUMP_hailing[self.index] 
     self.image = self.TRUMP_hailing[self.index]