Python 如何在Sprite的底部添加一个额外的图像或矩形？

我需要在Sprite

worker

的底部添加一个图标，然后在每次迭代中随机更改该图标。请注意，精灵<代码>工作者有两种状态：

正在运行

和

空闲

。在每种状态下，

工作者

都有一个特定的图像。我现在需要的是在worker的底部添加一个小图像，该图像将指定情绪状态：

高兴的
或
生气的

在类
Worker
中，我创建数组
emo\u images
，并指定变量
emo\u state
。此变量表示员工的情绪状态：高兴或生气。每个情绪状态都将其图像存储在
情绪图像中

在代码中，我随机生成变量
state\u indicator
。如果大于9，则
员工的情绪状态将更改为
愤怒。否则，它是幸福的

   state_indicator = random.randint(0,10)
    if state_indicator > 9:
        print(state_indicator)
        self.alert_notif_worker()

    def alert_notif_worker(self):
        self.emo_state = Worker.ANGRY

但是，我不知道如何将情绪图像放在
工作者
图像的底部，因为我不想替换
工作者
图像（空闲，运行）。我只需要在底部添加另一个图像，这个附加图像应该与
工作者一起移动

如果很难做到这一点，那么也可以使用两种颜色的矩形：红色和绿色，而不是图像，以表示情感状态

完整代码：

import sys
import pygame, random
from pygame.math import Vector2
from scipy.optimize import minimize
import math


WHITE = (255, 255, 255)
GREEN = (20, 255, 140)
GREY = (210, 210 ,210)
BLACK = (0, 0 ,0)
RED = (255, 0, 0)
PURPLE = (255, 0, 255)


SCREENWIDTH=1000
SCREENHEIGHT=578
# Create point vectors for the corners.
corners = [
    Vector2(0, 0), Vector2(SCREENWIDTH, 0),
    Vector2(SCREENWIDTH, SCREENHEIGHT), Vector2(0, SCREENHEIGHT)
    ]

ABS_PATH = "/Users/sb/Desktop/"
IMG_BACKGROUND = ABS_PATH + "images/background.jpg"
IMG_WORKER_RUNNING = ABS_PATH + "images/workers/worker_1.png"
IMG_WORKER_IDLE = ABS_PATH + "images/workers/worker_2.png"
IMG_WORKER_ACCIDENT = ABS_PATH + "images/workers/accident.png"
IMG_WORKER_HAPPY = ABS_PATH + "images/workers/happy.png"
IMG_WORKER_ANGRY = ABS_PATH + "images/workers/angry.png"


class Background(pygame.sprite.Sprite):
    def __init__(self, image_file, location, *groups):
        # we set a _layer attribute before adding this sprite to the sprite groups
        # we want the background to be actually in the back
        self._layer = -1
        pygame.sprite.Sprite.__init__(self, groups)
        # let's resize the background image now and only once
        self.image = pygame.transform.scale(pygame.image.load(image_file).convert(), (SCREENWIDTH, SCREENHEIGHT))
        self.rect = self.image.get_rect(topleft=location)


class Worker(pygame.sprite.Sprite):

    RUNNING = 0
    IDLE = 1
    HAPPY = 0
    ANGRY = 1
    IMAGE_CACHE = {}

    def __init__(self, idw, image_running, image_idle, image_happy, image_angry, location, *groups):

        self.font = pygame.font.SysFont('Arial', 20)

        # each state has it's own image
        self.images = {
            Worker.RUNNING: pygame.transform.scale(self.get_image(image_running), (45, 45)),
            Worker.IDLE: pygame.transform.scale(self.get_image(image_idle), (20, 45))
        }

        self.emo_images = {
            Worker.HAPPY: pygame.transform.scale(self.get_image(image_happy), (20, 20)),
            Worker.ANGRY: pygame.transform.scale(self.get_image(image_angry), (20, 20))
        }


        # we set a _layer attribute before adding this sprite to the sprite groups
        # we want the workers on top
        self._layer = 0
        pygame.sprite.Sprite.__init__(self, groups)

        self.idw = idw

        # let's keep track of the state and how long we are in this state already            
        self.state = Worker.IDLE
        self.emo_state = Worker.HAPPY
        self.ticks_in_state = 0

        self.image = self.images[self.state]
        self.rect = self.image.get_rect(topleft=location)

        self.direction = pygame.math.Vector2(0, 0)
        self.speed = random.randint(1, 3)
        self.set_random_direction()


    def set_random_direction(self):
        # random new direction or standing still
        vec = pygame.math.Vector2(random.randint(-100,100), random.randint(-100,100)) if random.randint(0, 5) > 1 else pygame.math.Vector2(0, 0)

        # check the new vector and decide if we are running or not
        length = vec.length()
        speed = sum(abs(int(v)) for v in vec.normalize() * self.speed) if length > 0 else 0

        if (length == 0 or speed == 0) and (self.state != Worker.ACCIDENT):
            new_state = Worker.IDLE
            self.direction = pygame.math.Vector2(0, 0)
        else:
            new_state = Worker.RUNNING
            self.direction = vec.normalize()

        self.ticks_in_state = 0
        self.state = new_state

        # use the right image for the current state
        self.image = self.images[self.state]
        #self.emo_image = self.emo_images[self.emo_state]


    def update(self, screen):
        self.ticks_in_state += 1

        # the longer we are in a certain state, the more likely is we change direction
        if random.randint(0, self.ticks_in_state) > 70:
            self.set_random_direction()

        # now let's multiply our direction with our speed and move the rect
        vec = [int(v) for v in self.direction * self.speed]
        self.rect.move_ip(*vec)

        # if we're going outside the screen, change direction
        if not screen.get_rect().contains(self.rect):
            self.direction = self.direction * -1


        send_alert = random.randint(0,10)
        if send_alert > 9:
            print(send_alert)
            self.alert_notif_worker()

        self.rect.clamp_ip(screen.get_rect())


    def alert_notif_worker(self):
        self.emo_state = Worker.ANGRY


    def get_image(self,key):
        if not key in Worker.IMAGE_CACHE:
            Worker.IMAGE_CACHE[key] = pygame.image.load(key)
        return Worker.IMAGE_CACHE[key]




pygame.init()

all_sprites = pygame.sprite.LayeredUpdates()
workers = pygame.sprite.Group()

screen = pygame.display.set_mode((SCREENWIDTH, SCREENHEIGHT))
pygame.display.set_caption("TEST")

# create multiple workers
idw = 1
for pos in ((30,30), (50, 400), (200, 100), (700, 200)):
    Worker(idw, IMG_WORKER_RUNNING, IMG_WORKER_IDLE, 
           IMG_WORKER_HAPPY, IMG_WORKER_ANGRY, 
           pos, all_sprites, workers)
    idw+=1

# and the background
Background(IMG_BACKGROUND, [0,0], all_sprites)

carryOn = True
clock = pygame.time.Clock()
while carryOn:
    for event in pygame.event.get():
        if event.type==pygame.QUIT:
            carryOn = False
            pygame.display.quit()
            pygame.quit()
            quit()

    all_sprites.update(screen)
    all_sprites.draw(screen)

    pygame.display.flip()

    clock.tick(20)

这可以相当容易地实现，只需在某个特定位置，相对于
工作者的
rect.x
和
rect.y
坐标，快速点击每个
工作者的情绪图像

不幸的是，我无法测试下面的代码示例，因为您的代码使用了很多我没有的图像。在实现这个代码之前，我需要看到的一个问题是，您正在初始化的背景< /Cord>对象正在添加到<代码> AljSpRistes < /代码>中，因此您可以考虑将<代码> ALL SpRistes < /代码>改为<代码> ALLWorksWorks<代码>，并且可以将<代码>背景<代码>添加到不同的组。
您还需要将
offset\u x
和
offset\u y
初始化为适合您的值。下面使用的值只会将图像移动到辅助对象的左下角

下面是示例代码：

for worker in all_workers:
   offset_x = 0
   offset_y = worker.rect.height
   screen.blit(worker.emo_images[worker.emo_state], (worker.rect.x+offset_x, worker.rect.y+offset_y))

我希望这个答案对你有帮助！请让我知道这是否适用于您，如果您有任何进一步的问题，请随时在下面留下评论。
我可以使用Micheal O'Dwyer的解决方案并在单独的for循环中blit图标图像，或者创建一个
图标
精灵类，该类可以作为
工作者
类的属性添加。然后，您可以在
update
方法中更新图标精灵的位置，并在工人状态发生更改时交换图像

您需要一个
LayeredUpdates
组，以便该图标显示在工作精灵上方

import pygame as pg
from pygame.math import Vector2


pg.init()
WORKER_IMG = pg.Surface((30, 50))
WORKER_IMG.fill(pg.Color('dodgerblue1'))
ICON_HAPPY = pg.Surface((12, 12))
ICON_HAPPY.fill(pg.Color('yellow'))
ICON_ANGRY = pg.Surface((10, 10))
ICON_ANGRY.fill(pg.Color('red'))


class Worker(pg.sprite.Sprite):

    def __init__(self, pos, all_sprites):
        super().__init__()
        self._layer = 0
        self.image = WORKER_IMG
        self.rect = self.image.get_rect(center=pos)
        self.state = 'happy'
        self.emo_images = {'happy': ICON_HAPPY, 'angry': ICON_ANGRY}
        # Create an Icon instance pass the image, the position
        # and add it to the all_sprites group.
        self.icon = Icon(self.emo_images[self.state], self.rect.bottomright)
        self.icon.add(all_sprites)

    def update(self):
        # Update the position of the icon sprite.
        self.icon.rect.topleft = self.rect.bottomright

    def change_state(self):
        """Change the state from happy to angry and update the icon."""
        self.state = 'happy' if self.state == 'angry' else 'angry'
        # Swap the icon image.
        self.icon.image = self.emo_images[self.state]


class Icon(pg.sprite.Sprite):

    def __init__(self, image, pos):
        super().__init__()
        self._layer = 1
        self.image = image
        self.rect = self.image.get_rect(topleft=pos)


def main():
    screen = pg.display.set_mode((640, 480))
    clock = pg.time.Clock()
    all_sprites = pg.sprite.LayeredUpdates()
    worker = Worker((50, 80), all_sprites)
    all_sprites.add(worker)

    done = False

    while not done:
        for event in pg.event.get():
            if event.type == pg.QUIT:
                done = True
            elif event.type == pg.MOUSEMOTION:
                worker.rect.center = event.pos
            elif event.type == pg.KEYDOWN:
                worker.change_state()

        all_sprites.update()
        screen.fill((30, 30, 30))
        all_sprites.draw(screen)

        pg.display.flip()
        clock.tick(60)


if __name__ == '__main__':
    main()
    pg.quit()