ml
34 lines
1.7 KiB
Markdown
34 lines
1.7 KiB
Markdown
## Fonts
|
|
|
|
This chapter documents the data format of the fonts. The game uses [bitmap fonts](https://en.wikipedia.org/wiki/Computer_font#Bitmap_fonts) which describe the characters.
|
|
|
|
The fonts are stored in single blocks within resources of type ```0x03```. They can be found in the file ```gamescr.res```.
|
|
|
|
All glyphs in the bitmap are lined up in a single line. There are no Y offsets per glyph, and the height is always equal to the height of the bitmap. An array of ```X-Offsets``` points to the start of a glyph and the width is equal the difference to the next offset.
|
|
|
|
### Binary Format
|
|
|
|
**Font Header** (84 bytes)
|
|
|
|
0000 uint16 Font Type -- 0x0000: Monochrome, 0xCCCC: Color
|
|
0002 [34]byte Unknown -- always 0x00
|
|
0024 int16 First character index (inclusive)
|
|
0026 int16 Last character index (inclusive)
|
|
0028 [32]byte Unknown -- always 0x00
|
|
0048 int32 Offset to X-Offsets, from beginning of data
|
|
004C int32 Offset to bitmap, from beginning of data
|
|
0050 int16 Width of bitmap in bytes
|
|
0052 int16 Height of bitmap in bytes
|
|
|
|
**X-Offsets** (2*N bytes)
|
|
|
|
The X-Offsets is an array of ```int16``` values. The length of the array is equal to the number of characters the font covers, plus one. The width of one glyph is always equal the difference to the next offset, even for the last one.
|
|
|
|
For a monochrome font, the offset is counted in bits, always beginning with the MSB.
|
|
|
|
**Bitmap** (W*H bytes)
|
|
|
|
Monochrome fonts have the glyphs packed as bits within the bytes, color fonts use the bytes as palette indices.
|
|
|
|
> Fonts that have an outline, primarily seen with the HUD fonts, don't store the outline information in the font bitmaps. The outlines are rendered at runtime.
|