PyGame 当我尝试将精灵添加到屏幕时滞后
PyGame lags when I try to add sprites to the screen
我正在尝试在 PyGame 中制作外星人入侵，当我 blit 宇宙飞船和子弹一切顺利时，但当我尝试从 sprite 组中绘制外星人时，游戏突然滞后。我已经尝试使用 convert() 函数，但即使在使用它之后它仍然滞后。
主要：
import sys
import pygame
from settings import Settings
from ship import Ship
from bullet import Bullet
from alien import Alien
class AlienInvasion:
"""Overall class to manage game assests and behavior"""
def __init__(self):
"""Initialize the game and create resources"""
pygame.init()
self.settings = Settings()
self.screen = pygame.display.set_mode((self.settings.screen_width, self.settings.screen_height))
pygame.display.set_caption("Alien Invasion")
self.ship = Ship(self)
self.bullets = pygame.sprite.Group()
self.aliens = pygame.sprite.Group()
def run_game(self):
"""Start the main loop for the game"""
while True:
clock.tick(60)
self._check_events()
self.ship.update()
self._update_bullets()
self._create_fleet()
self._update_aliens()
self._update_screen()
def _check_events(self):
#watch for keyboard and mouse events
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.KEYDOWN:
self._check_keydown_events(event)
elif event.type == pygame.KEYUP:
self._check_keyup_events(event)
def _check_keydown_events(self, event):
"""Respond to keypress"""
if event.key == pygame.K_RIGHT:
self.ship.moving_right = True
elif event.key == pygame.K_LEFT:
self.ship.moving_left = True
elif event.key == pygame.K_UP:
self.ship.moving_up = True
elif event.key == pygame.K_DOWN:
self.ship.moving_down = True
elif event.key == pygame.K_q:
sys.exit()
elif event.key == pygame.K_SPACE:
self._fire_bullet()
self.ship.firing = True
def _check_keyup_events(self, event):
if event.key == pygame.K_RIGHT:
self.ship.moving_right = False
elif event.key == pygame.K_LEFT:
self.ship.moving_left = False
def _fire_bullet(self):
if len(self.bullets) < self.settings.bullets_allowed:
new_bullet = Bullet(self)
self.bullets.add(new_bullet)
def _update_bullets(self):
self.bullets.update()
#delete bullets
for bullet in self.bullets.copy():
if bullet.rect.bottom <= 0:
self.bullets.remove(bullet)
def _update_aliens(self):
"""Update position of aliens"""
self.aliens.update()
def _create_fleet(self):
alien = Alien(self)
alien_width,alien_height = alien.rect.size
available_space_x = self.settings.screen_width - (2 * alien_width)
number_aliens_x = available_space_x // (2 * alien_width)
#determine number of rows that fit on the screen
ship_height = self.ship.rect.height
available_space_y = self.settings.screen_height - (3*alien_height) - ship_height
number_aliens_y = available_space_y // (2* alien_height)
for row_number in range(number_aliens_y):
for alien_number in range(number_aliens_x):
self._create_alien(alien_number, row_number)
def _create_alien(self,alien_number,row_number):
"""Create alien and place it in a row"""
alien = Alien(self)
alien_width, alien_height = alien.rect.size
alien.x = alien_width + 2 * alien_width * alien_number
alien.rect.y = alien_height + 2 * alien_width * row_number
alien.rect.x = alien.x
self.aliens.add(alien)
def _update_screen(self):
self.screen.fill(self.settings.bg_color)
self.ship.blitme()
for bullet in self.bullets.sprites():
bullet.draw_bullet()
self._create_fleet()
self.aliens.draw(self.screen)
pygame.display.flip()
if __name__ == '__main__':
ai = AlienInvasion()
ai.run_game(
外星人文件
this is the alien class 存储外星人。我已经将我的图像转换为 .bmp 文件，我也尝试过使用 convert() 函数，但它仍然滞后。
import pygame
from pygame.sprite import Sprite
class Alien(Sprite):
"""class that represents a single alien in a fleet"""
def __init__(self, ai_game):
#intialize alien and set position
super().__init__()
self.screen = ai_game.screen
self.settings = ai_game.settings
#load alien image
self.image = pygame.image.load('images/alien.bmp').convert()
self.rect = self.image.get_rect()
#start the alien at the top left of the screen
self.rect.x = self.rect.width
self.rect.y = self.rect.height
#store alien exact horizontal position
self.x = float(self.rect.x)
def update(self):
#move alien to the right
self.x += self.settings.alien_speed
self.rect.x = self.x
告诉我们你在每一帧都创建了舰队。因此，新的外星人会在每一帧中附加到 Group 并且你必须绘制比必要更多的外星人。更糟糕的是，'images/alien.bmp' 被加载到 class Alien 的构造函数中，因此必须在每一帧中加载多个图像：
class AlienInvasion:
# [...]
def _update_screen(self):
# [...]
self._create_fleet() # <----
self.aliens.draw(self.screen)
我建议在构建第一个外星人时将图像加载到 class 变量一次：
（参见 Class and Instance Variables）
class Alien(Sprite):
alienimage = None
"""class that represents a single alien in a fleet"""
def __init__(self, ai_game):
# [...]
#load alien image
if self.alienimage == None:
self.alienimage = pygame.image.load('images/alien.bmp').convert()
self.image = self.alienimage
# [...]
在主应用程序循环之前创建队列：
class AlienInvasion:
# [...]
def run_game(self):
self._create_fleet() # <---- ADD
"""Start the main loop for the game"""
while True:
clock.tick(60)
self._check_events()
self.ship.update()
self._update_bullets()
# self._create_fleet() <---- DELETE
self._update_aliens()
self._update_screen()
# [...]
def _update_screen(self):
# [...]
# self._create_fleet() <---- DELETE
self.aliens.draw(self.screen)
我正在尝试在 PyGame 中制作外星人入侵，当我 blit 宇宙飞船和子弹一切顺利时，但当我尝试从 sprite 组中绘制外星人时，游戏突然滞后。我已经尝试使用 convert() 函数，但即使在使用它之后它仍然滞后。
主要：
import sys
import pygame
from settings import Settings
from ship import Ship
from bullet import Bullet
from alien import Alien
class AlienInvasion:
"""Overall class to manage game assests and behavior"""
def __init__(self):
"""Initialize the game and create resources"""
pygame.init()
self.settings = Settings()
self.screen = pygame.display.set_mode((self.settings.screen_width, self.settings.screen_height))
pygame.display.set_caption("Alien Invasion")
self.ship = Ship(self)
self.bullets = pygame.sprite.Group()
self.aliens = pygame.sprite.Group()
def run_game(self):
"""Start the main loop for the game"""
while True:
clock.tick(60)
self._check_events()
self.ship.update()
self._update_bullets()
self._create_fleet()
self._update_aliens()
self._update_screen()
def _check_events(self):
#watch for keyboard and mouse events
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.KEYDOWN:
self._check_keydown_events(event)
elif event.type == pygame.KEYUP:
self._check_keyup_events(event)
def _check_keydown_events(self, event):
"""Respond to keypress"""
if event.key == pygame.K_RIGHT:
self.ship.moving_right = True
elif event.key == pygame.K_LEFT:
self.ship.moving_left = True
elif event.key == pygame.K_UP:
self.ship.moving_up = True
elif event.key == pygame.K_DOWN:
self.ship.moving_down = True
elif event.key == pygame.K_q:
sys.exit()
elif event.key == pygame.K_SPACE:
self._fire_bullet()
self.ship.firing = True
def _check_keyup_events(self, event):
if event.key == pygame.K_RIGHT:
self.ship.moving_right = False
elif event.key == pygame.K_LEFT:
self.ship.moving_left = False
def _fire_bullet(self):
if len(self.bullets) < self.settings.bullets_allowed:
new_bullet = Bullet(self)
self.bullets.add(new_bullet)
def _update_bullets(self):
self.bullets.update()
#delete bullets
for bullet in self.bullets.copy():
if bullet.rect.bottom <= 0:
self.bullets.remove(bullet)
def _update_aliens(self):
"""Update position of aliens"""
self.aliens.update()
def _create_fleet(self):
alien = Alien(self)
alien_width,alien_height = alien.rect.size
available_space_x = self.settings.screen_width - (2 * alien_width)
number_aliens_x = available_space_x // (2 * alien_width)
#determine number of rows that fit on the screen
ship_height = self.ship.rect.height
available_space_y = self.settings.screen_height - (3*alien_height) - ship_height
number_aliens_y = available_space_y // (2* alien_height)
for row_number in range(number_aliens_y):
for alien_number in range(number_aliens_x):
self._create_alien(alien_number, row_number)
def _create_alien(self,alien_number,row_number):
"""Create alien and place it in a row"""
alien = Alien(self)
alien_width, alien_height = alien.rect.size
alien.x = alien_width + 2 * alien_width * alien_number
alien.rect.y = alien_height + 2 * alien_width * row_number
alien.rect.x = alien.x
self.aliens.add(alien)
def _update_screen(self):
self.screen.fill(self.settings.bg_color)
self.ship.blitme()
for bullet in self.bullets.sprites():
bullet.draw_bullet()
self._create_fleet()
self.aliens.draw(self.screen)
pygame.display.flip()
if __name__ == '__main__':
ai = AlienInvasion()
ai.run_game(
外星人文件
this is the alien class 存储外星人。我已经将我的图像转换为 .bmp 文件，我也尝试过使用 convert() 函数，但它仍然滞后。
import pygame
from pygame.sprite import Sprite
class Alien(Sprite):
"""class that represents a single alien in a fleet"""
def __init__(self, ai_game):
#intialize alien and set position
super().__init__()
self.screen = ai_game.screen
self.settings = ai_game.settings
#load alien image
self.image = pygame.image.load('images/alien.bmp').convert()
self.rect = self.image.get_rect()
#start the alien at the top left of the screen
self.rect.x = self.rect.width
self.rect.y = self.rect.height
#store alien exact horizontal position
self.x = float(self.rect.x)
def update(self):
#move alien to the right
self.x += self.settings.alien_speed
self.rect.x = self.x
告诉我们你在每一帧都创建了舰队。因此，新的外星人会在每一帧中附加到 Group 并且你必须绘制比必要更多的外星人。更糟糕的是，'images/alien.bmp' 被加载到 class Alien 的构造函数中，因此必须在每一帧中加载多个图像：
class AlienInvasion: # [...] def _update_screen(self): # [...] self._create_fleet() # <---- self.aliens.draw(self.screen)
我建议在构建第一个外星人时将图像加载到 class 变量一次：
（参见 Class and Instance Variables）
class Alien(Sprite):
alienimage = None
"""class that represents a single alien in a fleet"""
def __init__(self, ai_game):
# [...]
#load alien image
if self.alienimage == None:
self.alienimage = pygame.image.load('images/alien.bmp').convert()
self.image = self.alienimage
# [...]
在主应用程序循环之前创建队列：
class AlienInvasion:
# [...]
def run_game(self):
self._create_fleet() # <---- ADD
"""Start the main loop for the game"""
while True:
clock.tick(60)
self._check_events()
self.ship.update()
self._update_bullets()
# self._create_fleet() <---- DELETE
self._update_aliens()
self._update_screen()
# [...]
def _update_screen(self):
# [...]
# self._create_fleet() <---- DELETE
self.aliens.draw(self.screen)