Constructing text with astericks

[Kagamin]

I don't think bitmaps are a good idea, keep your font in text 
format with characters indexed by code unit:
immutable string[][] font=[
...
[ //'i'
"*",
"*",
"*",
"*",
"*"],
...
[ //'s'
"*****",
"*    ",
"*****",
"    *",
"*****"],
...
];