python-Pygame-在精灵中加载图像

到目前为止,这是我的Sprite代码：

class Player(pygame.sprite.Sprite):

    def __init__(self, color, width, height):

        super().__init__()
        #Config
        self.image = pygame.Surface([width, height])
        self.image.fill(WHITE)
        self.image.set_colorkey(WHITE)

            # Draw
        pygame.draw.rect(self.image, color , [0, 0, width, height])

        # Fetch
        self.rect = self.image.get_rect()

    def right(self, pixels):
        self.rect.x += pixels
    def left(self, pixels):
        self.rect.x -= pixels
    def up(self, pixels):
        self.rect.y -= pixels
    def down(self, pixels):
        self.rect.y += pixels

现在,您可以在类(self.image = IMAGE)中分配全局IMAGE,并且所有实例都将引用此图像.

import pygame as pg


pg.init()
# The screen/display has to be initialized before you can load an image.
screen = pg.display.set_mode((640, 480))

IMAGE = pg.image.load('an_image.png').convert_alpha()


class Player(pg.sprite.Sprite):

    def __init__(self, pos):
        super().__init__()
        self.image = IMAGE
        self.rect = self.image.get_rect(center=pos)

如果要对同一类使用不同的图像,则可以在实例化期间传递它们：

class Player(pg.sprite.Sprite):

    def __init__(self, pos, image):
        super().__init__()
        self.image = image
        self.rect = self.image.get_rect(center=pos)


player1 = Player((100, 300), IMAGE1)
player2 = Player((300, 300), IMAGE2)

使用convert或convert_alpha(用于具有透明性的图像)方法可提高blit性能.

如果图像位于子目录中(例如“ images”),则使用os.path.join构造路径：

import os.path
import pygame as pg

IMAGE = pg.image.load(os.path.join('images', 'an_image.png')).convert_alpha()