GRAPHICS: Expose SJIS font chunk calculation

This commit is contained in:
Eugene Sandulenko 2020-08-31 23:45:19 +02:00
parent a5b3bd2c5c
commit b0c2bbb789
2 changed files with 96 additions and 89 deletions

View file

@ -344,100 +344,104 @@ bool FontTowns::loadData() {
return retValue;
}
const uint8 *FontTowns::getCharData(uint16 ch) const {
if (ch < kFont8x16Chars) {
return _fontData8x16 + ch * 16;
} else {
uint8 f = ch & 0xFF;
uint8 s = ch >> 8;
int FontTowns::getCharFMTChunk(uint16 ch) {
uint8 f = ch & 0xFF;
uint8 s = ch >> 8;
// moved from scumm\charset.cpp
enum {
KANA = 0,
KANJI = 1,
EKANJI = 2
};
// moved from scumm\charset.cpp
enum {
KANA = 0,
KANJI = 1,
EKANJI = 2
};
int base = s - ((s + 1) % 32);
int c = 0, p = 0, chunk_f = 0, chunk = 0, cr = 0, kanjiType = KANA;
int base = s - ((s + 1) % 32);
int c = 0, p = 0, chunk_f = 0, chunk = 0, cr = 0, kanjiType = KANA;
if (f >= 0x81 && f <= 0x84) kanjiType = KANA;
if (f >= 0x88 && f <= 0x9f) kanjiType = KANJI;
if (f >= 0xe0 && f <= 0xea) kanjiType = EKANJI;
if (f >= 0x81 && f <= 0x84) kanjiType = KANA;
if (f >= 0x88 && f <= 0x9f) kanjiType = KANJI;
if (f >= 0xe0 && f <= 0xea) kanjiType = EKANJI;
if ((f > 0xe8 || (f == 0xe8 && base >= 0x9f)) || (f > 0x90 || (f == 0x90 && base >= 0x9f))) {
c = 48; // correction
p = -8; // correction
}
if (kanjiType == KANA) {
chunk_f = (f - 0x81) * 2;
} else if (kanjiType == KANJI) { // Standard Kanji
p += f - 0x88;
chunk_f = c + 2 * p;
} else if (kanjiType == EKANJI) { // Enhanced Kanji
p += f - 0xe0;
chunk_f = c + 2 * p;
}
// Base corrections
if (base == 0x7f && s == 0x7f)
base -= 0x20;
if (base == 0x9f && s == 0xbe)
base += 0x20;
if (base == 0xbf && s == 0xde)
base += 0x20;
//if (base == 0x7f && s == 0x9e)
// base += 0x20;
switch (base) {
case 0x3f:
cr = 0; // 3f
if (kanjiType == KANA) chunk = 1;
else if (kanjiType == KANJI) chunk = 31;
else if (kanjiType == EKANJI) chunk = 111;
break;
case 0x5f:
cr = 0; // 5f
if (kanjiType == KANA) chunk = 17;
else if (kanjiType == KANJI) chunk = 47;
else if (kanjiType == EKANJI) chunk = 127;
break;
case 0x7f:
cr = -1; // 80
if (kanjiType == KANA) chunk = 9;
else if (kanjiType == KANJI) chunk = 63;
else if (kanjiType == EKANJI) chunk = 143;
break;
case 0x9f:
cr = 1; // 9e
if (kanjiType == KANA) chunk = 2;
else if (kanjiType == KANJI) chunk = 32;
else if (kanjiType == EKANJI) chunk = 112;
break;
case 0xbf:
cr = 1; // be
if (kanjiType == KANA) chunk = 18;
else if (kanjiType == KANJI) chunk = 48;
else if (kanjiType == EKANJI) chunk = 128;
break;
case 0xdf:
cr = 1; // de
if (kanjiType == KANA) chunk = 10;
else if (kanjiType == KANJI) chunk = 64;
else if (kanjiType == EKANJI) chunk = 144;
break;
default:
debug(4, "Invalid Char! f %x s %x base %x c %d p %d", f, s, base, c, p);
}
debug(6, "Kanji: %c%c f 0x%x s 0x%x base 0x%x c %d p %d chunk %d cr %d index %d", f, s, f, s, base, c, p, chunk, cr, ((chunk_f + chunk) * 32 + (s - base)) + cr);
const int chunkNum = (((chunk_f + chunk) * 32 + (s - base)) + cr);
if (chunkNum < 0 || chunkNum >= kFont16x16Chars)
return 0;
else
return _fontData16x16 + chunkNum * 32;
if ((f > 0xe8 || (f == 0xe8 && base >= 0x9f)) || (f > 0x90 || (f == 0x90 && base >= 0x9f))) {
c = 48; // correction
p = -8; // correction
}
if (kanjiType == KANA) {
chunk_f = (f - 0x81) * 2;
} else if (kanjiType == KANJI) { // Standard Kanji
p += f - 0x88;
chunk_f = c + 2 * p;
} else if (kanjiType == EKANJI) { // Enhanced Kanji
p += f - 0xe0;
chunk_f = c + 2 * p;
}
// Base corrections
if (base == 0x7f && s == 0x7f)
base -= 0x20;
if (base == 0x9f && s == 0xbe)
base += 0x20;
if (base == 0xbf && s == 0xde)
base += 0x20;
//if (base == 0x7f && s == 0x9e)
// base += 0x20;
switch (base) {
case 0x3f:
cr = 0; // 3f
if (kanjiType == KANA) chunk = 1;
else if (kanjiType == KANJI) chunk = 31;
else if (kanjiType == EKANJI) chunk = 111;
break;
case 0x5f:
cr = 0; // 5f
if (kanjiType == KANA) chunk = 17;
else if (kanjiType == KANJI) chunk = 47;
else if (kanjiType == EKANJI) chunk = 127;
break;
case 0x7f:
cr = -1; // 80
if (kanjiType == KANA) chunk = 9;
else if (kanjiType == KANJI) chunk = 63;
else if (kanjiType == EKANJI) chunk = 143;
break;
case 0x9f:
cr = 1; // 9e
if (kanjiType == KANA) chunk = 2;
else if (kanjiType == KANJI) chunk = 32;
else if (kanjiType == EKANJI) chunk = 112;
break;
case 0xbf:
cr = 1; // be
if (kanjiType == KANA) chunk = 18;
else if (kanjiType == KANJI) chunk = 48;
else if (kanjiType == EKANJI) chunk = 128;
break;
case 0xdf:
cr = 1; // de
if (kanjiType == KANA) chunk = 10;
else if (kanjiType == KANJI) chunk = 64;
else if (kanjiType == EKANJI) chunk = 144;
break;
default:
debug(4, "Invalid Char! f %x s %x base %x c %d p %d", f, s, base, c, p);
}
debug(6, "Kanji: %c%c f 0x%x s 0x%x base 0x%x c %d p %d chunk %d cr %d index %d", f, s, f, s, base, c, p, chunk, cr, ((chunk_f + chunk) * 32 + (s - base)) + cr);
return (((chunk_f + chunk) * 32 + (s - base)) + cr);
}
const uint8 *FontTowns::getCharData(uint16 ch) const {
if (ch < kFont8x16Chars)
return _fontData8x16 + ch * 16;
int chunkNum = getCharFMTChunk(ch);
if (chunkNum < 0 || chunkNum >= kFont16x16Chars)
return 0;
else
return _fontData16x16 + chunkNum * 32;
}
bool FontTowns::hasFeature(int feat) const {

View file

@ -208,6 +208,9 @@ public:
* Loads the ROM data from "FMT_FNT.ROM".
*/
bool loadData();
static int getCharFMTChunk(uint16 ch);
private:
enum {
kFont16x16Chars = 7808,