为什么我在 pygame 中得到恒定的 0 fps

Question

即使我将时钟节拍设置为 60 并且它在右边 space，我也没有得到任何帧。我也知道它不是我的电脑，因为我有运行更大的游戏，帧数更好。它也不能是缩进，因为我的意图是正确的。

import pygame


pygame.init()

screen = pygame.display.set_mode((500, 500))

gameclock = pygame.time.Clock()
fps = str(int(gameclock.get_fps()))

playerX = 250
playerY = 250
playerSpeed = 3

playerFrontImg = pygame.image.load("Images/PlayerImages/playerFront.png")
playerRightImg = pygame.image.load("Images/PlayerImages/playerRight.png")
playerBackImg = pygame.image.load("Images/PlayerImages/playerBack.png")
playerLeftImg = pygame.transform.flip(playerRightImg, True, False)


playercurrentImg = playerFrontImg


running = True
while running:
    gameclock.tick(60)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                playerY -= playerSpeed
                playercurrentImg = playerBackImg

            if event.key == pygame.K_DOWN:
                playerY += playerSpeed
                playercurrentImg = playerFrontImg

            if event.key == pygame.K_RIGHT:
                playerX += playerSpeed
                playercurrentImg = playerRightImg

            if event.key == pygame.K_LEFT:
                playerX -= playerSpeed
                playercurrentImg = playerLeftImg

        if event.type == pygame.KEYUP:
            if event.key == pygame.K_UP:
                playerY += 0

            if event.key == pygame.K_DOWN:
                playerY += 0

            if event.key == pygame.K_RIGHT:
                playerX += 0

            if event.key == pygame.K_LEFT:
                playerX += 0

    playerRect = playercurrentImg.get_rect(topleft = (playerX, playerY))
    screen.fill((255, 255, 100))
    print(fps)
    screen.blit(playercurrentImg, (playerX, playerY))
    pygame.display.update()
pygame.quit()
quit()

任何帮助将不胜感激，我已经为这个问题苦苦挣扎了一段时间。关于我应该如何组织代码，还有其他提示吗？

Answer 1

您需要在应用程序循环中调用 get_fps()：

Compute your game's framerate (in frames per second). It is computed by averaging the last ten calls to Clock.tick().

gameclock = pygame.time.Clock()

# [...]

running = True
while running:
    gameclock.tick(60)
    fps = str(int(gameclock.get_fps()))
    
    # [...]

键盘事件（参见 pygame.event 模块）仅在键状态改变时发生一次。 KEYDOWN 事件在每次按下一个键时发生一次。 KEYUP 每松开一个键就会出现一次。使用键盘事件进行单个操作或逐步移动。

pygame.key.get_pressed() returns a list with the state of each key. If a key is held down, the state for the key is True, otherwise False. Use pygame.key.get_pressed() 评估按钮的当前状态并获得连续移动：

running = True
while running:
    gameclock.tick(60)
    fps = str(int(gameclock.get_fps()))

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    keys = pygame.key.get_pressed()
    if keys[pygame.K_UP]:
        playerY -= playerSpeed
        playercurrentImg = playerBackImg

    if keys[pygame.K_DOWN]:
        playerY += playerSpeed
        playercurrentImg = playerFrontImg

    if keys[pygame.K_RIGHT]:
        playerX += playerSpeed
        playercurrentImg = playerRightImg

    if keys[pygame.K_LEFT]:
        playerX -= playerSpeed
        playercurrentImg = playerLeftImg

    # [...]

为什么我在 pygame 中得到恒定的 0 fps

Why do I get a constant 0 fps in pygame

python

pygame

python-3.x

pygame-clock

pygame-tick