我的 Pygame 消息到屏幕功能不显示文本

Question

我正在关注 YouTube 教程系列，我在 pygame 游戏中遇到了这个问题。我做了一个叫messagetoscreen的函数，在视频里用的很好，但是我用不了。

这是我的代码：

#Imports

import pygame
pygame.init()
pygame.font.init()
import sys
import random
import cx_Freeze
import time

#Variables

playerhealth = 100

black = (0, 0, 0)
white = (255, 255, 255)
red = (255, 0, 0)
green = (0 ,255, 0)

windowtitle = "Climber"
sizex = 1000
sizey = 700

rect1x = 500
rect1y = 350
rect1sizex = 50
rect1sizey = 50

rect1xchange = 0
rect1ychange = 0

clock = pygame.time.Clock()
fps = 600

font = pygame.font.SysFont(None, 25)

#Functions

def messagetoscreen (msg,color):
    screentext = font.render(msg, True, color)
    gamedisplay.blit(screentext , [sizex / 2, sizey / 2])

#Initialization

gamedisplay = pygame.display.set_mode((sizex, sizey))
pygame.display.set_caption(windowtitle)

#Game Loop

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            quit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_w:
                rect1ychange -= 1
            elif event.key == pygame.K_a:
                rect1xchange -= 1
            elif event.key == pygame.K_s:
                rect1ychange += 1
            elif event.key == pygame.K_d:
                rect1xchange += 1
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_w:
                rect1ychange = 0
            elif event.key == pygame.K_a:
                rect1xchange = 0
            elif event.key == pygame.K_s:
                rect1ychange = 0
            elif event.key == pygame.K_d:
                rect1xchange = 0

    if rect1y > 650:
        rect1y = 650
    if rect1x > 950:
        rect1x = 950
    if rect1y < 0:
        rect1y = 0
    if rect1x < 0:
        rect1x = 0

    rect1x += rect1xchange
    rect1y += rect1ychange
    messagetoscreen("HAPPY", red)

    gamedisplay.fill(white)
    pygame.draw.rect(gamedisplay, green, (rect1x, rect1y, rect1sizex, rect1sizey))

    pygame.display.update()
    clock.tick(fps)

我想知道如何修复我的功能，以及任何其他可能导致错误的问题。

Answer 1

答案是，在用白色填充游戏显示之前，我将文本 blit 到屏幕上。记得画好背景后blit text

下面是绘制图形的代码在 while 循环中：

gamedisplay.fill(white)
pygame.draw.rect(gamedisplay, green, (rect1x, rect1y, rect1sizex, rect1sizey))
messagetoscreen("HAPPY", red)

我的 Pygame 消息到屏幕功能不显示文本

My Pygame messagetoscreen function doesnt show text

python

fonts

pygame

function