Cube drawing

[deanhystad]

I modified my screen_update to better handle multi-line text. Now it centers horizontally and vertically about a point. To get the starting y coordinate it splits the message into lines, converts the lines into text surfaces, and sums the height of those surfaces. Next it adds a line space between consecutive lines to get the height of the overall block of text. This information is used to compute a starting y position.

    def refresh_screen(msg=None, font=text_font, color=text_color):
        """Draw the cube and an optional message"""
        line_space = 2
        surface.fill(background)
        for square in cube.squares:
            square.draw(surface)
        if msg:
            lines = msg.split('\n')
            lines = [font.render(line, True, color) for line in lines]
            x = center.x
            y = center.y - (
                sum(line.get_height() for line in lines) +
                (len(lines) - 1) * line_space) / 2
            for line in lines:
                surface.blit(line, (x - line.get_width() / 2, y))
                y = y + line.get_height() + line_space
        pygame.display.flip()

It would be easy to modify this function to just draw some text centered over some x, y position.