如何在pygame中保持窗口颜色变化

Question

我试图做到这一点，当我的图片弹起时，窗口会变成随机颜色，但是当它发生变化时，它只会在碰撞时改变一瞬间，然后窗口会变回白色

当我删除 screen.fill 时，它会保留每次弹跳的随机颜色，但随后会留下图像痕迹

import pygame
import random

height = 500
width = 500

pygame.init()

window = pygame.display.set_mode((500, 500))
pygame.display.set_caption('epic trampoline')
colors = ['red', 'orange', 'yellow', 'green', 'blue', 'purple', 'pink']

running = True
win_color = 'white'
trampoline_color = 'black'
clock = pygame.time.Clock()

image = pygame.image.load('epicface.png').convert_alpha()
epic_image = pygame.transform.scale(image, (50, 50))  # changing size

epic_rect = epic_image.get_rect(center=(250, 0))  

gravity = 0
acceleration = 1

while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
    clock.tick(30)
    gravity += 0.6 
    window.fill('white')
    epic_rect.bottom += gravity

    # rect = pygame.draw.rect(window, 'white', epic_rect)

    trampoline = pygame.draw.rect(window, trampoline_color, pygame.Rect(0, 440, 500, 10))
    collide = pygame.Rect.colliderect(trampoline, epic_rect)

    if collide:
        epic_rect.bottom = trampoline.top
        win_color = window.fill(random.choice(colors))
        gravity = -18 

    window.blit(epic_image, epic_rect.topleft)

    pygame.display.flip()

pygame.display.flip()

Answer 1

您正在

window.fill('white')

循环中调用

while running

。

因此，更改颜色后，下一个循环将再次将其设置为白色。

---

您应该在启动时调用

window.fill('white')

一次（在

while

之外），然后在循环内调用

window.fill

。