创建一个自我更新的分数

如何解决创建一个自我更新的分数

我已经检查了一些其他人，但他们的示例与我试图实现的目标略有不同。目标是 player 射出 block，分数将增加 10。对我来说，分数保持不变，即使 player 命中目标也不会更新。这是我所拥有的：

我使用 pygame.font.SysFont 是因为 pygame.freetype 对我来说有点太混乱了。

# Font
font = pygame.font.SysFont("Arial",16)

# Colours
white = (255,255,255)
black = (0,0)

# Text
scoreValue = font.render("score: " +str(score),True,black)
livesLeft = font.render("Health: " +str(health),black)

score = 0
health = 0

while not done:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True

    bullet_list.update()
    for bullet in bullet_list:
        block_hit_list = pygame.sprite.spritecollide(bullet,block_list,True)
        for block in block_hit_list:
            bullet_list.remove(bullet)
            sprite_list.remove(bullet)
            score += 10

    screen.fill(white)
    screen.blit(scoreValue,(4,550))
    screen.blit(livesLeft,580))
    sprite_list.draw(screen)
    pygame.display.flip()

我缩短了上面的代码以仅显示我认为必要的内容，但是如果您需要查看完整代码，我会直接在此消息下方添加它。在此示例中，我有一个 scoreValue（忽略运行状况），但是当 scoreValue 击中屏幕上的 player 之一时，blocks 不会在屏幕上更新。有没有另一种方法可以在 pygame 中跟踪分数？还是我只是做错了什么？

完整代码如下：

import pygame
pygame.init()

class Player(pygame.sprite.Sprite):
    def __init__(self,color):
        super().__init__()
        self.image = pygame.Surface([25,25])
        self.image.fill(color)
        self.color = color
        self.rect = self.image.get_rect()

    def moveRight(self,pixels):
        if self.rect.x + pixels > 1000 - 50:
            self.rect.x = 1000 - 50
        self.rect.x += pixels

    def moveLeft(self,pixels):
        if self.rect.x - pixels < 0:
            self.rect.x = 0
        else:
            self.rect.x -= pixels

class Block(pygame.sprite.Sprite):
    def __init__(self,25])
        self.image.fill(color)
        self.color = color
        self.rect = self.image.get_rect()

    def update(self):
        self.rect.y +=5

class Bullet(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface([4,10])
        self.image.fill(blue)
        self.rect = self.image.get_rect()

    def update(self):
        self.rect.y -=5

# Font
font = pygame.font.SysFont("Arial",16)

# Colours
red = (255,0)
black = (0,0)
white = (255,255)
blue = (0,255)

screen = pygame.display.set_mode([800,600])

# Sprite Lists
sprite_list = pygame.sprite.Group()
block_list = pygame.sprite.Group()
bullet_list = pygame.sprite.Group()

# Player
player = Player(red)
player.rect.x = 375
player.rect.y = 500
sprite_list.add(player)

score = 0
health = 3

# Block
margin = 50
for column in range(4):
    for row in range(15):
        block = Block(black)
        block.rect.x = 30 + margin*row
        block.rect.y = 25 + margin*column
        block_list.add(block)
        sprite_list.add(block)

# Text
scoreValue = font.render("score: " +str(score),black)

done = False
clock = pygame.time.Clock()

while not done:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True
        elif event.type == pygame.MOUSEBUTTONDOWN:
            bullet = Bullet()
            bullet.rect.x = player.rect.x + 12
            bullet.rect.y = player.rect.y
            sprite_list.add(bullet)
            bullet_list.add(bullet)

    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT] or keys[pygame.K_a]:
        player.moveLeft(3)
    if keys[pygame.K_RIGHT] or keys[pygame.K_d]:
        player.moveRight(3)

    bullet_list.update()
    for bullet in bullet_list:
        block_hit_list = pygame.sprite.spritecollide(bullet,True)
        for block in block_hit_list:
            bullet_list.remove(bullet)
            sprite_list.remove(bullet)
            score += 10
            
        if bullet.rect.y < -10:
            bullet_list.remove(bullet)
            sprite_list.remove(bullet)
    
    
    screen.fill(white)
    screen.blit(scoreValue,580))
    sprite_list.draw(screen)
    pygame.display.flip()

    clock.tick(60)

pygame.quit()

解决方法

更改 score 的值不会神奇地更新 scoreValue Surface。 pygame.Surface 只是一个图像。您需要使用更改后的文本重新渲染 scoreValue Surface：

while not done:
    # [...]

    for bullet in bullet_list:
        block_hit_list = pygame.sprite.spritecollide(bullet,block_list,True)
        for block in block_hit_list:
            bullet_list.remove(bullet)
            sprite_list.remove(bullet)
            score += 10
            scoreValue = font.render("Score: " + str(score),True,black)