我正在通过用 Pygame 制作简单的游戏来学习 Pygame。但我的游戏非常滞后,我了解到这可能是因为 pygame 每次传输到屏幕时都会转换 .png 图像。
所以我尝试使用convert()来加载图像。但这给了我一个错误。做了一些研究,但没有答案可以帮助我,即使我已经测试了一些。
我的代码:
import pygame
import os, random
class Item:
def __init__(self):
self.image = Context.load_image("item.png")
self.X = random.randint(0, Context.resolution[1] - 200)
self.Y = 0
self.dY = 10
class Basket:
def __init__(self):
self.image = Context.load_image("catcher.png")
self.X = Context.resolution[0] / 2
self.Y = Context.resolution[1] - 200
self.vel = 30.
self.dX = self.dY = 0
def action(self, event):
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_a:
self.dX = -self.vel
elif event.key == pygame.K_d:
self.dX = self.vel
elif event.type == pygame.KEYUP:
self.dX = 0
class Context:
resolution = (1600, 900)
dir_resources = "resources/"
def __init__(self):
self.fps = 60
self.background_theme = self.load_image("background.png")
@staticmethod
def load_image(image_name):
path = Context.dir_resources + image_name
# ERROR HAPPENS HERE! If I take ".convert()" off, the game runs but laggy
return pygame.image.load(os.path.join(path)).convert()
class Game:
score = 0
def __init__(self):
self.game_on = True
self.context = Context()
self.basket = Basket()
self.screen = pygame.display.set_mode(self.context.resolution, pygame.HWSURFACE | pygame.DOUBLEBUF)
self.fps = self.context.fps
self.clock = pygame.time.Clock()
self.tshirt = Item()
def event_loop(self):
for event in pygame.event.get():
if event.type == pygame.QUIT:
self.game_on = False
self.basket.action(event)
def update(self):
self.basket.X = self.basket.X + self.basket.dX
self.tshirt.Y = self.tshirt.Y + self.tshirt.dY
def draw(self):
self.screen.blit(self.context.background_theme, (0, 0))
self.screen.blit(self.basket.image, (self.basket.X, self.basket.Y))
self.screen.blit(self.tshirt.image, (self.tshirt.X, self.tshirt.Y))
pygame.display.flip()
def run(self):
while self.game_on:
self.event_loop()
self.update()
self.draw()
pygame.display.update()
self.clock.tick(self.fps)
def main():
pygame.init()
game = Game()
game.run()
pygame.quit()
if __name__ == '__main__':
main()
这是错误:
Traceback (most recent call last):
File "/me/tmvaz/PycharmProjects/Game/__main__.py", line 105, in <module>
main()
File "/home/me/PycharmProjects/Game/__main__.py", line 98, in main
game = Game()
File "/home/me/PycharmProjects/Game/__main__.py", line 57, in __init__
self.context = Context()
File "/home/me/PycharmProjects/Game/__main__.py", line 42, in __init__
self.background_theme = self.load_image("background.png")
File "/home/me/PycharmProjects/Game/__main__.py", line 47, in load_image
return pygame.image.load(os.path.join(path)).convert()
pygame.error: No video mode has been set
Process finished with exit code 1
我正在使用 Linux,Lubuntu,如果这有帮助的话。
最佳答案
您必须调用pygame.display.set_mode
在调用 convert
或 convert_alpha
方法之前。所以我只需将此行移至程序顶部:
pygame.init()
screen = pygame.display.set_mode(resolution, pygame.HWSURFACE | pygame.DOUBLEBUF)
您可以在实例化 Game 对象时将 screen
变量传递给 Game 对象,然后将其分配给 self.screen
。
关于python - 转换 Pygame 图像出现错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49754923/