Reuse Font objects multiple times

[nthykier]

You mentioned in pygame/pygame#673 that the game is using a lot of CPU rendering the text. I suspect (but have not profiled the game) that you can gain a considerable performance by avoiding the reloading of the Fonts for each word rendered.

I.e.

            word_surface = pygame.font.Font(
                None, 36).render(wordText, 1, color)

Would be replaced with:

# in __init__
[...]
            self.font = pygame.font.Font(None, 36)

# in renderWord
            word_surface = self.font.render(wordText, 1, color)

Another approach that might work in this particular game would be to cache the rendered words (clearing the cache when self.text is reset).