FONT (File Format)

The FONT format defines fonts that can be used to display text in-game.

To do: Notate differences between different versions of the format. Only Metroid Prime's FONT version is documented at the moment. Character definition structure should be expanded on; there should be a section explaining what each value does, and it should be made more clear which UV coordinate corresponds to which vertex.

This file format needs more research There's some unknowns in the header, and some of the values in the character definition structure should be double-checked.

Format

Header

Offset	Size	Description
0x0	4	"FONT" magic fourCC
0x4	4	Version; see below
0x8	4	Unknown
0xC	4	Unknown
0x10	4	Unknown
0x14	4	Unknown
0x18	4	Unknown
0x1C	4	Unknown
0x20	4	Unknown
0x24	N	Font name; zero-terminated string
0x24+N	4	TXTR file ID
0x28+N	4	Unknown

Version

Version	Game
1	Metroid Prime Kiosk Demo
2	Metroid Prime
4	Metroid Prime 2 (and demo), Metroid Prime Wii releases
5	Metroid Prime 3/DKCR

Character Definitions

This part of the file defines each character of the font. It starts with a 32-bit count value.

Offset	Type	Size	Description
0x0	u16	2	UTF-16 character
0x2	float	4	Left UV coordinate
0x6	float	4	Top UV coordinate
0xA	float	4	Right UV coordinate
0xE	float	4	Bottom UV coordinate
0x12	u32	4	Glyph left padding
0x16	u32	4	Print head advance
0x1A	u32	4	Glyph right padding
0x1E	u32	4	Character width
0x22	u32	4	Character height
0x26	u32	4	Kerning index
0x2A	End of character definition

Kerning Table

This table is at the end of the file, and defines kerning pairs. It starts with a 32-bit count value and then loops the following structure:

Offset	Size	Description
0x0	2	Character 1
0x2	2	Character 2
0x4	4	Kerning adjust
0x8	End of entry