Pygame 精灵不移动

Question

我试图在 pygame 中将一个精灵 blit 到屏幕上。

这是我的代码：

import pygame
from pygame.locals import (
    K_UP,
    K_DOWN,
    K_LEFT,
    K_RIGHT,
    K_ESCAPE,
    KEYDOWN,
    QUIT
)
WINDOW = pygame.display.set_mode((800,800))

class Player(pygame.sprite.Sprite):
    def __init__(self):
        self.x = 0
        self.y = 0
        super().__init__()
        self.surf = pygame.Surface((50,50))
        self.surf.fill((20, 115, 224))
        self.rect = self.surf.get_rect()
    def update(self):
        print("Updated")
        GRAVITY = 10
        self.y += GRAVITY
        self.rect = (self.x,self.y)


def game_loop():
    run = True

    
    
    while run:
        WINDOW.fill((52, 183, 235))
        Player().update()
        WINDOW.blit(Player().surf,(Player().x,Player().y))
        pygame.display.update()
        for event in pygame.event.get():
            if event.type == QUIT:
                run = False
                pygame.quit()
        
            

if __name__ == "__main__":
    game_loop()

我遇到问题的具体部分是：

def update(self):
            print("Updated")
            GRAVITY = 10
            self.y += GRAVITY
            self.rect = (self.x,self.y)

和

    Player().update()
    WINDOW.blit(Player().surf,(Player().x,Player().y))

当我运行这段代码时，精灵不会从屏幕上移开，即使 self.y 是通过重力添加的。如有任何帮助，我们将不胜感激。

Answer 1

据我了解您的代码，您每次引用 Player().

时都会使用默认设置实例化一个新的 Player()

尝试：

import pygame
from pygame.locals import (
    K_UP,
    K_DOWN,
    K_LEFT,
    K_RIGHT,
    K_ESCAPE,
    KEYDOWN,
    QUIT
)

WINDOW = pygame.display.set_mode((800,800))


class Player(pygame.sprite.Sprite):
    def __init__(self):
        self.x = 0
        self.y = 0
        super().__init__()
        self.surf = pygame.Surface((50, 50))
        self.surf.fill((20, 115, 224))
        self.rect = self.surf.get_rect()

    def update(self):
        print("Updated")
        GRAVITY = 10
        self.y += GRAVITY
        self.rect = (self.x, self.y)


def game_loop():
    run = True

    player = Player()    
    while run:
        WINDOW.fill((52, 183, 235))
        player.update()
        WINDOW.blit(player.surf, (player.x, player.y))
        pygame.display.update()
        for event in pygame.event.get():
            if event.type == QUIT:
                run = False
                pygame.quit()


if __name__ == "__main__":
    game_loop()

Pygame 精灵不移动

Pygame sprite doesn't move

python

pygame