Pygame气球流行游戏：气球类和分数

Question

我有 2 种气球，一种蓝色和一种红色（50% 的几率生成红色或绿色气球）。如果弹出绿色气球，玩家将获得 2 分，如果弹出红色气球，玩家将获得 -2 分。 -1 如果绿色气球飞走了。 我创建了分数计数，但仅针对一个气球，这意味着如果我同时弹出红色和绿色气球但我被困在这里，分数有效（+2）。 我不知道 random.choice 是否是获得 50% 机会的最佳方式 这是一段代码：

class SpawnTime():
    def __init__(self, previous, time):
        self.time_previous = previous
        self.time= time


class Balloon():
    count = 0 

    def __init__(self):
        self.txr = random.choice(BALLOONS_TYPE)     
        self.width = self.txr.get_width()
        self.height = self.txr.get_height()        
        self.x = random.randint(0, SCREEN_WIDTH-self.width)
        self.y = SCREEN_HEIGHT
        self.rect = pygame.Rect(self.x, self.y, self.width, self.height)
        self.speed = random.randint(MIN_BALLOON_SPEED, MAX_BALLOON_SPEED)
        self.active = True
        Balloon.count +=1 # add 1 to balloon counter

    def update(self):
        self.rect.y -=  self.speed

        if self.rect.bottom <= 0:  # off top of screen
            self.active= False


    def draw(self):
        SCREEN.blit(self.txr, self.rect)


class Player():
    def __init__(self):
        self.x = 0 
        self.y = 0
        self.txr = pygame.image.load('assets/sprites/player.png')
        self.width = self.txr.get_width()
        self.height = self.txr.get_height()
        self.rect = pygame.Rect(self.x, self.y, self.width, self.height )
        self.score = 0

    def update(self):
        self.x, self.y = pygame.mouse.get_pos()
        self.rect.x= self.x
        self.rect.y= self.y


    def draw(self):
        SCREEN.blit(self.txr, self.rect)

    def clicked(self):
        # check if player has clicked on a balloon
        for b in balloons:
            if b.rect.collidepoint(self.x, self.y):
                self.score +=2
                b.active=False
                break # exit the for loop

Answer 1

不要使用ranfom.choice，而是使用random.randrange通过它的索引随机选择一个元素（参见random）：

class Balloon():
    count = 0 

    def __init__(self):
        self.balloon_type = random.randrange(len(BALLOONS_TYPE))
        img = BALLOONS_TYPE[self.balloon_type]
        self.width = img.get_width()
        self.height = img.get_height()     
        # [...]
    
    def draw(self):
        SCREEN.blit(BALLOONS_TYPE[self.balloon_type], self.rect)

现在您可以根据气球的类型更改分数：

class Player():
    # [...]

    def clicked(self):
        # check if player has clicked on a balloon
        for b in balloons:
            if b.rect.collidepoint(self.x, self.y):
                
                if b.balloon_type == 0:
                    self.score += 2
                else
                    self.score -= 2

                b.active=False
                break # exit the for loop

（不知道是红色气球还是绿色气球先出现，所以你可能需要交换+=2和-=2）