我是编程新手，这是我制作/制作的第一款真正的游戏。基本上这个游戏让你作为一名球员射击＆＃34;子弹＆＃34;在敌人。有些物体在中间移动，试图阻止所有子弹穿过。
我觉得玩家发射子弹的速度太快了。所以我做了一些研究，发现了一些有用的东西。 time.sleep（秒）。当我使用它时，虽然整个游戏都会停止并等待时间延迟结束。
当玩家按下鼠标按钮发射子弹时，我在主程序循环中使用了time.sleep（秒）。这反过来会影响整个游戏，使其全部延迟5秒钟。
那么我如何在不影响整场比赛的情况下等待呢？
这是我的游戏代码：
import pygame
import random
import time
enemy_speed = 5
running = 1
# Define some colors
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
RED = (255, 0, 0)
BLUE = (0, 0, 255)
GREEN = (0, 255, 0)
# --- Classes
class Enemy(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("enemy.png").convert()
self.rect = self.image.get_rect()
self.image.set_colorkey(WHITE)
def update(self):
self.rect.x += 7
if self.rect.x >= 610:
self.rect.x = random.randrange(50,610)
class Hand(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("hand.png").convert()
self.rect = self.image.get_rect()
self.image.set_colorkey(WHITE)
def update(self):
self.rect.y = 300
self.rect.x += 5
if self.rect.x >= 610:
self.rect.x = random.randrange(50,610)
class Hand2(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("hand2.png").convert()
self.rect = self.image.get_rect()
self.image.set_colorkey(WHITE)
def update (self):
self.rect.y = 100
self.rect.x -= 5
if self.rect.x <= 90:
self.rect.x = random.randrange(50,610)
class Hand3(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("hand3.png").convert()
self.rect = self.image.get_rect()
self.image.set_colorkey(WHITE)
def update (self):
self.rect.y = 200
self.rect.x += 3
if self.rect.x >= 610:
self.rect.x = random.randrange(50,610)
class Hand4(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("hand4.png").convert()
self.rect = self.image.get_rect()
self.image.set_colorkey(WHITE)
def update (self):
self.rect.y = 50
self.rect.x += 3
if self.rect.x >= 610:
self.rect.x = random.randrange(50,610)
class Hand5(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("hand5.png").convert()
self.rect = self.image.get_rect()
self.image.set_colorkey(WHITE)
def update (self):
self.rect.y = 350
self.rect.x -= 3
if self.rect.x >= 610:
self.rect.x = random.randrange(50,610)
class Player(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.image.load("player.png").convert()
self.rect = self.image.get_rect()
self.image.set_colorkey(WHITE)
def update(self):
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
self.rect.x -= 4
if event.key == pygame.K_RIGHT:
self.rect.x += 4
if self.rect.x <= 50:
self.rect.x = 60
if self.rect.x >= 610:
self.rect.x = 600
class Pellet(pygame.sprite.Sprite):
def __init__(self):
super().__init__()
self.image = pygame.Surface([4,10])
self.image.fill(RED)
self.rect = self.image.get_rect()
def update(self):
speed_p = -3
self.rect.y -= speed_p
class Bullet(pygame.sprite.Sprite):
""" This class represents the bullet . """
def __init__(self):
# Call the parent class (Sprite) constructor
super().__init__()
self.image = pygame.Surface([4, 10])
self.image.fill(BLUE)
self.rect = self.image.get_rect()
def update(self):
""" Move the bullet. """
speed_b = 3
self.rect.y -= speed_b
# --- Create the window
# Initialize Pygame
pygame.init()
# Set the height and width of the screen
screen_width = 700
screen_height = 400
screen = pygame.display.set_mode([screen_width, screen_height])
pygame.display.set_caption("Cannon Battle")
all_sprites_list = pygame.sprite.Group()
enemy_list = pygame.sprite.Group()
player_list = pygame.sprite.Group()
hand_list = pygame.sprite.Group()
hand2_list = pygame.sprite.Group()
hand3_list = pygame.sprite.Group()
hand4_list = pygame.sprite.Group()
hand5_list = pygame.sprite.Group()
bullet_list = pygame.sprite.Group()
pellet_list = pygame.sprite.Group()
enemy = Enemy()
enemy_list.add(enemy)
all_sprites_list.add(enemy_list)
hand = Hand()
hand_list.add(hand)
all_sprites_list.add(hand_list)
hand2 = Hand2()
hand2_list.add(hand2)
all_sprites_list.add(hand2)
hand3 = Hand3()
hand3_list.add(hand3)
all_sprites_list.add(hand3)
hand4 = Hand4()
hand4_list.add(hand4)
all_sprites_list.add(hand4)
hand5 = Hand5()
hand5_list.add(hand5)
all_sprites_list.add(hand5)
player = Player()
player_list.add(player)
all_sprites_list.add(player_list)
done = False
clock = pygame.time.Clock()
player.rect.y = 370
behind = pygame.image.load("grassland.png").convert()
# -------- Main Program Loop
while not done:
screen.blit(behind, [0,0])
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
bullet.rect.y = player.rect.y
all_sprites_list.add(bullet)
bullet_list.add(bullet)
time.sleep(5)
elif event.type == pygame.MOUSEBUTTONUP:
pellet = Pellet()
pellet.rect.x = enemy.rect.x
pellet.rect.y = enemy.rect.y
all_sprites_list.add(pellet)
pellet_list.add(pellet)
# --- Game logic
# Call the update() method on all the sprites
all_sprites_list.update()
for pellet in pellet_list:
player_hit_list = pygame.sprite.spritecollide(pellet,player_list,True)
if pellet.rect.y >= 510:
pellet_list.remove(pellet)
all_sprites_list.remove(pellet)
for player in player_hit_list:
done = True
print("You Lost!")
print("But thanks for playing!")
print("Made by Oankar Studios")
for bullet in bullet_list:
enemy_hit_list = pygame.sprite.spritecollide(bullet,enemy_list,True)
if bullet.rect.y <= -10:
bullet_list.remove(bullet)
all_sprites_list.remove(bullet)
if bullet.rect.x == hand.rect.x:
bullet_list.remove(bullet)
all_sprites_list.remove(bullet)
if bullet.rect.x == hand2.rect.x:
bullet_list.remove(bullet)
all_sprites_list.remove(bullet)
if bullet.rect.x == hand3.rect.x:
bullet_list.remove(bullet)
all_sprites_list.remove(bullet)
if bullet.rect.x == hand4.rect.x:
bullet_list.remove(bullet)
all_sprites_list.remove(bullet)
if bullet.rect.x == hand5.rect.x:
bullet_list.remove(bullet)
all_sprites_list.remove(bullet)
for enemy in enemy_hit_list:
done = True
print("You Won!")
print("Made by Oankar Studios")
# Clear the screen
# Draw all the spites
all_sprites_list.draw(screen)
# Go ahead and update the screen with what we've drawn.
pygame.display.flip()
# --- Limit to 20 frames per second
clock.tick(60)
pygame.quit()
这是我使用time.sleep（sec）的地方，它位于主程序循环中：
elif event.type == pygame.MOUSEBUTTONDOWN:
bullet = Bullet()
bullet.rect.x = player.rect.x
bullet.rect.y = player.rect.y
all_sprites_list.add(bullet)
bullet_list.add(bullet)
time.sleep(5)
答案 0 :(得分：0)
您可以存储最后一击子弹的时间，并忽略所有按下直到5秒钟。 所以，在顶部
last_bullet_shot_time = None
然后
elif event.type == pygame.MOUSEBUTTONDOWN:
if last_bullet_shot_time is None or
time.now() - last_bullet_shot_time > datetime.timedelta(seconds = 5):
bullet = Bullet()
bullet.rect.x = player.rect.x
bullet.rect.y = player.rect.y
all_sprites_list.add(bullet)
bullet_list.add(bullet)
last_bullet_shot_time = time.now()
答案 1 :(得分：0)
正如你已经发现的那样，time.sleep（）会暂停整个程序（或准确的线程），这通常不是你想要的。一种可能的解决方案是比较@maniexx提到的时间。
当您使用pygame时，我建议以基本相同的方式使用pygame.time.get_ticks（），如this回答中所述。
答案 2 :(得分：0)
您可以使用pygame的功能，根据计时器生成事件以及唯一的用户定义事件，以便在经过所需的时间后创建通知事件。以下是您需要的更改：
# globals
TIMEOUT_EXPIRED = pygame.USEREVENT+1
shooting_allowed = True
然后在游戏的正文中：
# in the event processing loop
elif event.type == pygame.MOUSEBUTTONDOWN:
if shooting_allowed:
bullet = Bullet()
bullet.rect.x = player.rect.x
bullet.rect.y = player.rect.y
all_sprites_list.add(bullet)
bullet_list.add(bullet)
# disable shooting for 5 seconds
shooting_allowed = False
pygame.time.set_timer(TIMEOUT_EXPIRED, 5000)
elif event.type == TIMEOUT_EXPIRED:
# re-enable shooting
shooting_allowed = True
pygame.time.set_timer(TIMEOUT_EXPIRED, 0) # stop generation of event