在pygame中渲染多行文本

Question

我正在尝试制作游戏并且正在尝试渲染大量文本。当文本呈现时，其余文本会从屏幕上消失。有什么简单的方法可以让文本转到pygame窗口的下一行吗？

 helpT = sys_font.render \
                ("This game is a combination of all of the trends\n of 2016. When you press 'Start Game,' a menu will pop up. In order to beat the game, you must get a perfect score on every single one of these games.",0,(hecolor))
        screen.blit(helpT,(0, 0))

原文由 Daniel Maslia 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

正如我在评论中所说；您必须分别呈现每个单词并计算文本的宽度是否扩展了表面（或屏幕）的宽度。这是一个例子：

 import pygame
pygame.init()

SIZE = WIDTH, HEIGHT = (1024, 720)
FPS = 30
screen = pygame.display.set_mode(SIZE, pygame.RESIZABLE)
clock = pygame.time.Clock()

def blit_text(surface, text, pos, font, color=pygame.Color('black')):
    words = [word.split(' ') for word in text.splitlines()]  # 2D array where each row is a list of words.
    space = font.size(' ')[0]  # The width of a space.
    max_width, max_height = surface.get_size()
    x, y = pos
    for line in words:
        for word in line:
            word_surface = font.render(word, 0, color)
            word_width, word_height = word_surface.get_size()
            if x + word_width >= max_width:
                x = pos[0]  # Reset the x.
                y += word_height  # Start on new row.
            surface.blit(word_surface, (x, y))
            x += word_width + space
        x = pos[0]  # Reset the x.
        y += word_height  # Start on new row.

text = "This is a really long sentence with a couple of breaks.\nSometimes it will break even if there isn't a break " \
       "in the sentence, but that's because the text is too long to fit the screen.\nIt can look strange sometimes.\n" \
       "This function doesn't check if the text is too high to fit on the height of the surface though, so sometimes " \
       "text will disappear underneath the surface"
font = pygame.font.SysFont('Arial', 64)

while True:

    dt = clock.tick(FPS) / 1000

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

    screen.fill(pygame.Color('white'))
    blit_text(screen, text, (20, 20), font)
    pygame.display.update()

结果

原文由 Ted Klein Bergman 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

在 pygame 中没有简单的方法在多行上呈现文本，但是这个辅助函数可以为您提供一些用处。只需传递您的文本（带换行符）、x、y 和字体大小。

 def render_multi_line(text, x, y, fsize)
        lines = text.splitlines()
        for i, l in enumerate(lines):
            screen.blit(sys_font.render(l, 0, hecolor), (x, y + fsize*i))

原文由 justincai 发布，翻译遵循 CC BY-SA 3.0 许可协议