在本节中，我们将介绍背景、声音、字体和评分系统。这些都是游戏中需要的重要功能，以使其成为完整的产品。
完整代码如下：
# 1.导入库
import pygame, sys
from pygame.locals import *
import random, time
# 2.初始化
pygame.init()
# 3.设置帧数 FPS
FPS = 60
FramePerSec = pygame.time.Clock()
# 4.创建颜色对象
BLUE = (0, 0, 255)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
# 4. 创建屏幕尺寸，宽度和高度，速度，分数变量
SCREEN_WIDTH = 400
SCREEN_HEIGHT = 600
SPEED = 5
SCORE = 0
# 5.设置显示的字体
font = pygame.font.SysFont("Verdana", 60)
font_small = pygame.font.SysFont("Verdana", 20)
game_over = font.render("Game Over", True, BLACK)
background = pygame.image.load("AnimatedStreet.png")
# 6.创建显示屏幕，填充白色背景
DISPLAYSURF = pygame.display.set_mode((400,600))
DISPLAYSURF.fill(WHITE)
# 设置界面标题
pygame.display.set_caption("Game")
# 7.创建电脑游戏对战类
class Enemy(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("Enemy.png")
self.rect = self.image.get_rect()
self.rect.center = (random.randint(40, SCREEN_WIDTH-40), 0)
def move(self):
global SCORE
self.rect.move_ip(0,SPEED)
if (self.rect.top > 600):
SCORE += 1
self.rect.top = 0
self.rect.center = (random.randint(40, SCREEN_WIDTH - 40), 0)
# 8. 创建游戏玩家角色类
class Player(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("Player.png")
self.rect = self.image.get_rect()
self.rect.center = (160, 520)
def move(self):
pressed_keys = pygame.key.get_pressed()
#if pressed_keys[K_UP]:
#self.rect.move_ip(0, -5)
#if pressed_keys[K_DOWN]:
#self.rect.move_ip(0,5)
if self.rect.left > 0:
if pressed_keys[K_LEFT]:
self.rect.move_ip(-5, 0)
if self.rect.right < SCREEN_WIDTH:
if pressed_keys[K_RIGHT]:
self.rect.move_ip(5, 0)
# 9. 实例化游戏角色
P1 = Player()
E1 = Enemy()
#Creating Sprites Groups
enemies = pygame.sprite.Group()
enemies.add(E1)
all_sprites = pygame.sprite.Group()
all_sprites.add(P1)
all_sprites.add(E1)
# 添加一个事件，加快运动速度
INC_SPEED = pygame.USEREVENT + 1
pygame.time.set_timer(INC_SPEED, 1000)
# 10. 游戏循环
while True:
#Cycles through all events occurring
for event in pygame.event.get():
if event.type == INC_SPEED:
SPEED += 0.5
if event.type == QUIT:
pygame.quit()
sys.exit()
DISPLAYSURF.blit(background, (0,0))
scores = font_small.render(str(SCORE), True, BLACK)
DISPLAYSURF.blit(scores, (10,10))
#Moves and Re-draws all Sprites
for entity in all_sprites:
DISPLAYSURF.blit(entity.image, entity.rect)
entity.move()
#To be run if collision occurs between Player and Enemy
if pygame.sprite.spritecollideany(P1, enemies):
pygame.mixer.Sound('crash.wav').play()
time.sleep(0.5)
DISPLAYSURF.fill(RED)
DISPLAYSURF.blit(game_over, (30,250))
pygame.display.update()
for entity in all_sprites:
entity.kill()
time.sleep(2)
pygame.quit()
sys.exit()
pygame.display.update()
FramePerSec.tick(FPS)
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