OBD:Text encoding: Difference between revisions

OBD:Text encoding (view source)

Revision as of 22:05, 20 November 2022

12 bytes added , 20 November 2022

m

→‎Cyrillic: consolidating the mentions of font size

Geyser

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 ;Italic fonts
 :The Russian version only provides an implementation of Windows-1251 for regular and bold fonts. The five italic fonts (7pt, 9pt, 10pt, 12pt and 14pt) have exactly the same data (pixels and glyph descriptors) as for the European iteration of Mac OS Roman. This makes sense because italic fonts are inherently broken (see [[/Fonts#Italic|HERE]]) and thus not used by any text in vanilla Oni.
-;Bold 14 font
+;14pt bold font
-:Somewhat surprisingly, the size-14 TSFT in the Russian version of TSFFTahoma does not have a complete Windows-1251 code page either. Instead it is limited to the US-ASCII character set (including the "printable delete" box at code point 0x7F), i.e., the upper section of the above table (white background). This causes no issue in vanilla Oni, but only because there is no text that uses bold 14.
+:Somewhat surprisingly, the 14pt bold TSFT in the Russian version of TSFFTahoma does not have a complete Windows-1251 code page either. Instead it is limited to the US-ASCII character set (including the "printable delete" box at code point 0x7F), i.e., the upper section of the above table (white background). This causes no issue in vanilla Oni, but only because there is no text that uses 14pt bold.
 ;Incomplete transparency
 :A unique "feature" of the Russian/Cyrillic TSFFTahoma is that all the characters in the extended ASCII range (0x80-0xFF) have a slightly opaque background (about 3% opacity) in the regular (non-bold) font variant. This isn't visible ingame, but only because the engine (re)posterizes all the glyphs into 4-bit grayscale when rendering (so that only opacities above 6% are visible).
 ;Glyph alignment and spacing
-:Last but not least, some fonts in the Russian TSFFTahoma have inconsistent vertical alignment, the most blatant example being 12 bold: some glyphs are one pixel shorter or taller than the full line height (ascender+descender), without a properly compensated vertical glyph offset; others simply have pixels that are not properly aligned within a glyph's rectangle. Besides, many glyphs have excessive padding to the left and/or right of a character, which affects readability.<br />'''N.B.''' There are other examples of poor alignment, e.g. for 12 bold, the character 0x9C (њ) has its right side cut off and is thus unusable (luckily it doesn't occur in Russian script).
+:Last but not least, some fonts in the Russian TSFFTahoma have inconsistent vertical alignment, the most blatant example being 12pt bold: some glyphs are one pixel shorter or taller than the full line height (ascender+descender), without a properly compensated vertical glyph offset; others simply have pixels that are not properly aligned within a glyph's rectangle. Besides, many glyphs have excessive padding to the left and/or right of a character, which affects readability.<br />'''N.B.''' There are other examples of poor alignment, e.g., for 12pt bold, the character 0x9C (њ) has its right side cut off and is thus unusable (luckily it doesn't occur in Russian script).
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 ===Chinese===
 The Chinese version of Oni is unique in how the main game code resides in '''Oni.dat''', a renamed copy of the original Oni.exe from the US version that is executed indirectly by a wrapper app called '''oni.exe''', alongside a custom text engine, '''xfhsm_oni.dll'''. The latter DLL intercepts any text about to be displayed by "Oni.dat", first reducing it to a set of two-byte control sequences, and then (if all goes well) to a set of custom glyphs, with pixel data coming from an external font file, '''xf_font.dat'''.