python - 如何修复我的 'Jump' ？

Question

我是这个网站和 pygame 的新手，所以请耐心等待。我正在尝试 pygame 并制作了一个简单的平台游戏。然而，每当我“跳跃”时， block 就会逐帧跳跃，所以我必须按住空格键。任何帮助将不胜感激! 这是我的代码:

import pygame
pygame.init()
win = pygame.display.set_mode((500, 500))
x = 0
y = 490
width = 10
height = 10
vel = 5
pygame.key.set_repeat(1)
isjump = False
jumpcount = 10
while True:
    pygame.time.delay(30)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            break
        keys = pygame.key.get_pressed()
        if keys[pygame.K_a] and x>vel-5:
            x -= vel
        if keys[pygame.K_d] and x < 500 - width:
            x += vel
        if not(isjump):
            if keys[pygame.K_SPACE]:
                isjump = True
        else:
            if jumpcount >= -10:
                neg = 1
                if jumpcount < 0:
                    neg = -1
                y -= (jumpcount ** 2) /2 * neg
                jumpcount -= 1
            else:
                isjump = False
                jumpcount = 10
        win.fill((0, 0, 0))
        pygame.draw.rect(win, (255, 255, 255), (x, y, width, height))
        pygame.display.update()
pygame.quit()

Answer 1

您将键盘事件处理与跳转逻辑混合在一起。我做了两件事，更改空格键检测以触发 isjump 并处理跳转逻辑，无论是否按下按键:

import pygame
pygame.init()
win = pygame.display.set_mode((500, 500))
x = 0
y = 490
width = 10
height = 10
vel = 5
pygame.key.set_repeat(1)
isjump = False
jumpcount = 10
while True:
    pygame.time.delay(30)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            break
        keys = pygame.key.get_pressed()
        if keys[pygame.K_a] and x>vel-5:
            x -= vel
        if keys[pygame.K_d] and x < 500 - width:
            x += vel
        # if we're not already jumping, check if space is pressed to start a jump
        if not isjump and keys[pygame.K_SPACE]:
            isjump = True
            jumpcount = 10
    # if we're supposed to jump, handle the jump logic
    if isjump:
        if jumpcount >= -10:
            neg = 1
            if jumpcount < 0:
                neg = -1
            y -= (jumpcount ** 2) /2 * neg
            jumpcount -= 1
        else:
            isjump = False
            jumpcount = 10
    win.fill((0, 0, 0))
    pygame.draw.rect(win, (255, 255, 255), (x, y, width, height))
    pygame.display.update()
pygame.quit()