Question

我试图为课堂创建游戏。我想为它添加一个开始屏幕，但它似乎无法正常工作。

整个代码：

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import pygame
import random
from os import path

img_dir = path.join(path.dirname(__file__), 'Sprites')
snd_dir = path.join(path.dirname(__file__), 'sound')

WIDTH = 480
HEIGHT = 600
FPS = 30

car_img = pygame.image.load(path.join(img_dir, "copgreen20.bmp"))
mob_img = pygame.image.load(path.join(img_dir, "mob_zom.bmp"))
priv_img = pygame.image.load(path.join(img_dir, "copgreen20.bmp"))
# define colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
YELLOW = (255, 255, 0)

# initialize pygame and create window
pygame.init()
pygame.display.init()
screen = pygame.display.set_mode([800, 600])
test = "space.ogg"

pygame.mixer.init(frequency=22050, size=-16, channels=2, buffer=4096)
pygame.mixer.music.load(path.join(snd_dir, 'atari.ogg'))
pygame.mixer.music.play(-1)    
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("My Game")
clock = pygame.time.Clock()


font_name = pygame.font.match_font('Arial')
def draw_text(surf, text, size, x, y):
    font = pygame.font.Font(font_name, size)
    text_surface = font.render(text, True, BLUE)
    text_rect = text_surface.get_rect()
    text_rect.midtop = (x, y)
    surf.blit(text_surface, text_rect)

class Player(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((80, 50))
        self.images = []
        self.image = car_img
        self.rect = self.image.get_rect()
        self.rect.centerx = WIDTH / 2
        self.rect.bottom = HEIGHT - 50
        self.speedx = 0
        self.image = pygame.transform.scale(car_img, (50, 80))
        self.image.set_colorkey(GREEN)
    def update(self):
        self.speedx = 0
        keystate = pygame.key.get_pressed()
        if keystate[pygame.K_LEFT]:
            self.speedx = -8
        if keystate[pygame.K_RIGHT]: 
            self.speedx = 8
        if keystate[pygame.K_UP]: 
            self.speedy = -8
        self.rect.x += self.speedx
        if self.rect.right > WIDTH:
            self.rect.right = WIDTH
        if self.rect.left < 0:
            self.rect.left = 0

    def shoot(self):
        bullet = Bullet(self.rect.centerx, self.rect.top)
        all_sprites.add(bullet)
        bullets.add(bullet) 

class Mob(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((30, 40))
        self.image = mob_img
        self.rect = self.image.get_rect()
        self.rect.x = random.randrange(WIDTH - self.rect.width)
        self.rect.y = random.randrange(-100, -40)
        self.speedy = random.randrange(1, 9)
        self.speedx = random.randrange(-3, 3)
        self.image.set_colorkey(WHITE)
        self.image.set_colorkey(YELLOW)
    def update(self):
        self.rect.x += self.speedx
        self.rect.y += self.speedy
        if self.rect.top > HEIGHT + 10 or self.rect.left < -25 or self.rect.right > WIDTH + 20:
            self.rect.x = random.randrange(WIDTH - self.rect.width)
            self.rect.y = random.randrange(  -100, -40)
            self.speedy = random.randrange(1, 8)

class Priv(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((30, 40))
        self.image = priv_img
        self.rect = self.image.get_rect()
        self.rect.x = random.randrange(WIDTH - self.rect.width)
        self.rect.y = random.randrange(-100, -40)
        self.speedy = random.randrange(1, 9)
        self.speedx = random.randrange(-3, 3)
        self.image.set_colorkey(WHITE)
        self.image.set_colorkey(YELLOW)
    def update(self):
        self.rect.x += self.speedx
        self.rect.y += self.speedy
        if self.rect.top > HEIGHT + 10 or self.rect.left < -25 or self.rect.right > WIDTH + 20:
            self.rect.x = random.randrange(WIDTH - self.rect.width)
            self.rect.y = random.randrange(  -100, -40)
            self.speedy = random.randrange(1, 8)

class Bullet(pygame.sprite.Sprite):
    def __init__(self, x, y):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.Surface((10, 20))
        self.image.fill(YELLOW)
        self.rect = self.image.get_rect()
        self.rect.bottom = y
        self.rect.centerx = x
        self.speedy = 200

all_sprites = pygame.sprite.Group()
mobs = pygame.sprite.Group()
player = Player()
all_sprites.add(player)

background = pygame.image.load(path.join(img_dir, "back_road.bmp")).convert()
background_rect = background.get_rect()
bullets = pygame.sprite.Group()
allspriteslist = pygame.sprite.Group()

#showstartscreen()

for i in range(8):
    m = Mob()
    all_sprites.add(m)
    mobs.add(m)

def game_intro():
    display = pygame.display.set_mode((800,600))
    intro = True
    while intro:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

        display.fill(BLACK)
        largeText = pygame.font.match_font('Arial',10)
        textSurf, textRect = text_objects("this is a game", largeText)
        textRect.centre = ((display_width/2), (display_height/2))
        display.blit(textSurf, textRect)
        pygame.display.update()
        clock.tick(15)
    pygame.display.update()
score = 000 
# Game loop
game_intro()
running = True
while running:
    # keep loop running at the right speed
    clock.tick(FPS)
    # Process input (events)
    for event in pygame.event.get():
        # check for closing window
        if event.type == pygame.QUIT:
            running = False
            #for i in range(5):
                   #m = Mob()
                    #all_sprites.add(m)
                    #mobs.add(m)
        elif event.type == pygame.KEYDOWN:
            if event.type == pygame.K_9:
                running = False
            if event.key == pygame.K_SPACE:
              player.shoot()
            if event.key == pygame.K_EQUALS:
                for i in range(100):
                    m = Mob()
                    all_sprites.add(m)
                    mobs.add(m)
            #if event.key == pygame.K_SPACE:
            if clock == 0:
                for i in range(100):
                    m = Mob()
                    all_sprites.add(m)
                    mobs.add(m)
            if event.key == pygame.K_1:
                for i in range(2):
                    p = Priv()
                    all_sprites.add(p)
                    Priv.add(p)
            if event.key == pygame.K_2:
                for i in range(10):
                    m = Mob()
                    all_sprites.add(m)
                    mobs.add(m)
    # Update
    all_sprites.update()

    hits = pygame.sprite.groupcollide(mobs, bullets, True, True)
    for hit in hits:
            score += 1
            m = Mob()
            all_sprites.add(m)
            mobs.add(m)
            p = Priv()
            all_sprites.add(m)
            Priv.add(p)

    hits = pygame.sprite.spritecollide(player, mobs, False)
    #if hits:
        #running = False

    try:
        for i in bullets:
            i.rect.bottom += -5
    except:
        None
      # Draw / render
    screen.fill(BLACK)
    screen.blit(background, background_rect)
    draw_text(screen, str(score), 50, WIDTH / 10, 10)
    #draw_text(screen, str(scores), 50, WIDTH / 10, 10)
    all_sprites.draw(screen)
# *after* drawing everything, flip the display
    pygame.display.flip()
pygame.QUIT

问题所在的代码：

def game_intro():
    display = pygame.display.set_mode((800,600))
    intro = True
    while intro:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

        display.fill(BLACK)
        largeText = pygame.font.match_font('Arial',10)
        textSurf, textRect = text_objects("this is a game", largeText)
        textRect.centre = ((display_width/2), (display_height/2))
        display.blit(textSurf, textRect)
        pygame.display.update()
        clock.tick(15)
    pygame.display.update()
score = 000 
# Game loop
game_intro()

错误：

File＆＃34; /Users/harrisonj11/NetBeansProjects/game_test_jakob/src/game_test_jakob.py" ;,第167行，in       game_intro（）

档案

＆＃34; /Users/harrisonj11/NetBeansProjects/game_test_jakob/src/game_test_jakob.py" ;,第159行，在game_intro中       textSurf，textRect = text_objects（＆＃34;这是一个游戏＆＃34;，largeText）   NameError：name＆＃39; text_objects＆＃39;未定义

Answer 1

您尚未定义text_objects功能。看起来你的意思是你在上面声明的draw_text函数，但它并没有完全符合你的要求。

我猜你的意思是：

创建文本表面和表示该表面边界的矩形
将矩形移动到屏幕中间（宽度/ 2代码）
使用该矩形绘制文本表面

你可以修改你已经拥有的draw_text函数来返回那些东西，因为它似乎已经计算了文本的边界矩形并为该文本创建了一个表面。

Pygame开始scren

1 个答案: