I've been home for 4 days and make a halt to sedge. I'm back here Hangzhong and continue my project.

回家呆了四天,现在继续学习。

sio2的font要求“first char start at 0 in ASCII”

// Please take note that the sio2Font system can handle any
        // size of texture font as long as the first char start at
        // 0 in ASCII. Knowing this (eg:) if you don't need lower
        // case characters you can cut the height of your texture
        // (as long as they stay a power of 2) and use only uppercase
        // characters, resulting in less video memory and a faster
        // texture look up.