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scummvm/engines/kyra/screen_eob.cpp

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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#if !defined(ENABLE_EOB)
#include "kyra/screen.h"
#endif
#ifdef ENABLE_EOB
#include "kyra/eobcommon.h"
#include "kyra/resource.h"
#include "common/system.h"
#include "graphics/cursorman.h"
#include "graphics/palette.h"
namespace Kyra {
Screen_EoB::Screen_EoB(EoBCoreEngine *vm, OSystem *system) : Screen(vm, system, _screenDimTable, _screenDimTableCount) {
_shapeFadeMode[0] = _shapeFadeMode[1] = 0;
_shapeFadeInternal = 0;
_fadeData = 0;
_fadeDataIndex = 0;
_dsX1 = _dsX2 = _dsY1 = _dsY2 = 0;
_gfxX = _gfxY = 0;
_gfxCol = 0;
_dsTempPage = 0;
_dsDiv = 0;
_dsRem = 0;
_dsScaleTrans = 0;
_cgaScaleTable = 0;
_gfxMaxY = 0;
_egaDitheringTable = 0;
_egaDitheringTempPage = 0;
_cgaMappingDefault = 0;
_cgaDitheringTables[0] = _cgaDitheringTables[1] = 0;
_useHiResEGADithering = false;
}
Screen_EoB::~Screen_EoB() {
delete[] _fadeData;
delete[] _dsTempPage;
delete[] _cgaScaleTable;
delete[] _egaDitheringTable;
delete[] _egaDitheringTempPage;
delete[] _cgaDitheringTables[0];
delete[] _cgaDitheringTables[1];
}
bool Screen_EoB::init() {
if (Screen::init()) {
int temp;
_gfxMaxY = _vm->staticres()->loadRawData(kEoBBaseExpObjectY, temp);
if (_renderMode != Common::kRenderCGA && _renderMode != Common::kRenderEGA)
_fadeData = _vm->resource()->fileData("FADING.DAT", 0);
if (!_fadeData) {
_fadeData = new uint8[0x700];
memset(_fadeData, 0, 0x700);
if (_renderMode != Common::kRenderCGA && _renderMode != Common::kRenderEGA) {
uint8 *pal = _vm->resource()->fileData("PALETTE1.PAL", 0);
for (int i = 0; i < 7; i++)
createFadeTable(pal, &_fadeData[i << 8], 18, (i + 1) * 36);
delete[] pal;
}
}
_dsTempPage = new uint8[12000];
if (_vm->gameFlags().useHiRes && _renderMode == Common::kRenderEGA) {
_useHiResEGADithering = true;
_egaDitheringTable = new uint8[256];
_egaDitheringTempPage = new uint8[SCREEN_W * 2 * SCREEN_H * 2];
for (int i = 0; i < 256; i++)
_egaDitheringTable[i] = i & 0x0F;
} else if (_renderMode == Common::kRenderCGA) {
_cgaMappingDefault = _vm->staticres()->loadRawData(kEoB1CgaMappingDefault, temp);
_cgaDitheringTables[0] = new uint16[256];
memset(_cgaDitheringTables[0], 0, 256 * sizeof(uint16));
_cgaDitheringTables[1] = new uint16[256];
memset(_cgaDitheringTables[1], 0, 256 * sizeof(uint16));
_cgaScaleTable = new uint8[256];
memset(_cgaScaleTable, 0, 256 * sizeof(uint8));
for (int i = 0; i < 256; i++)
_cgaScaleTable[i] = ((i & 0xF0) >> 2) | (i & 0x03);
}
return true;
}
return false;
}
void Screen_EoB::setClearScreenDim(int dim) {
setScreenDim(dim);
clearCurDim();
}
void Screen_EoB::clearCurDim() {
fillRect(_curDim->sx << 3, _curDim->sy, ((_curDim->sx + _curDim->w) << 3) - 1, (_curDim->sy + _curDim->h) - 1, _curDim->unkA);
}
void Screen_EoB::setMouseCursor(int x, int y, const byte *shape) {
setMouseCursor(x, y, shape, 0);
}
void Screen_EoB::setMouseCursor(int x, int y, const byte *shape, const uint8 *ovl) {
if (!shape)
return;
int mouseW = (shape[2] << 3);
int mouseH = (shape[3]);
int colorKey = (_renderMode == Common::kRenderCGA) ? 0 : _cursorColorKey;
int scaleFactor = _useHiResEGADithering ? 2 : 1;
uint8 *cursor = new uint8[mouseW * scaleFactor * mouseH * scaleFactor];
// We use memset and copyBlockToPage instead of fillRect to make sure that the
// color key 0xFF doesn't get converted into EGA color
memset(cursor, colorKey, mouseW * scaleFactor * mouseH * scaleFactor);
copyBlockToPage(6, 0, 0, mouseW * scaleFactor, mouseH * scaleFactor, cursor);
drawShape(6, shape, 0, 0, 0, 2, ovl);
CursorMan.showMouse(false);
if (_useHiResEGADithering)
ditherRect(getCPagePtr(6), cursor, mouseW * scaleFactor, mouseW, mouseH, colorKey);
else
copyRegionToBuffer(6, 0, 0, mouseW, mouseH, cursor);
// Mouse cursor post processing for CGA mode. Unlike the original (which uses drawShape for the mouse cursor)
// the cursor manager cannot know whether a pixel value of 0 is supposed to be black or transparent. Thus, we
// go over the transparency mask again and turn the black pixels to color 4.
if (_renderMode == Common::kRenderCGA) {
const uint8 *maskTbl = shape + 4 + ((mouseW * mouseH) >> 2);
uint8 *dst = cursor;
uint8 trans = 0;
uint8 shift = 6;
uint16 mH = mouseH;
while (mH--) {
uint16 mW = mouseW;
while (mW--) {
if (shift == 6)
trans = *maskTbl++;
if (!*dst && !((trans >> shift) & 3))
*dst = 4;
dst++;
shift = (shift - 2) & 7;
}
}
}
CursorMan.replaceCursor(cursor, mouseW * scaleFactor, mouseH * scaleFactor, x, y, colorKey);
if (isMouseVisible())
CursorMan.showMouse(true);
delete[] cursor;
// makes sure that the cursor is drawn
// we do not use Screen::updateScreen here
// so we can be sure that changes to page 0
// are NOT updated on the real screen here
_system->updateScreen();
}
void Screen_EoB::loadFileDataToPage(Common::SeekableReadStream *s, int pageNum, uint32 size) {
s->read(_pagePtrs[pageNum], size);
}
void Screen_EoB::printShadedText(const char *string, int x, int y, int col1, int col2) {
printText(string, x - 1, y, 12, col2);
printText(string, x, y + 1, 12, 0);
printText(string, x - 1, y + 1, 12, 0);
printText(string, x, y, col1, 0);
}
void Screen_EoB::loadShapeSetBitmap(const char *file, int tempPage, int destPage) {
loadEoBBitmap(file, _cgaMappingDefault, tempPage, destPage, -1);
_curPage = 2;
}
void Screen_EoB::loadEoBBitmap(const char *file, const uint8 *cgaMapping, int tempPage, int destPage, int convertToPage) {
const char *filePattern = (_vm->game() == GI_EOB1 && (_renderMode == Common::kRenderEGA || _renderMode == Common::kRenderCGA)) ? "%s.EGA" : "%s.CPS";
Common::String tmp = Common::String::format(filePattern, file);
Common::SeekableReadStream *s = _vm->resource()->createReadStream(tmp);
bool loadAlternative = false;
if (s) {
// This additional check is necessary since some localized versions of EOB II seem to contain invalid (size zero) cps files
if (s->size())
loadBitmap(tmp.c_str(), tempPage, destPage, 0);
else
loadAlternative = true;
delete s;
} else {
loadAlternative = true;
}
if (loadAlternative) {
if (_vm->game() == GI_EOB1) {
tmp.insertChar('1', tmp.size() - 4);
loadBitmap(tmp.c_str(), tempPage, destPage, 0);
} else {
tmp.setChar('X', 0);
s = _vm->resource()->createReadStream(tmp);
if (!s)
error("Screen_EoB::loadEoBBitmap(): Failed to load file '%s'", file);
s->seek(768);
loadFileDataToPage(s, destPage, 64000);
delete s;
}
}
if (convertToPage == -1) {
return;
} else if (convertToPage == 2 && _renderMode == Common::kRenderCGA) {
convertPage(destPage, 4, cgaMapping);
copyRegion(0, 0, 0, 0, 320, 200, 4, 2, Screen::CR_NO_P_CHECK);
} else if (convertToPage == 0) {
convertPage(destPage, 2, cgaMapping);
copyRegion(0, 0, 0, 0, 320, 200, 2, 0, Screen::CR_NO_P_CHECK);
} else {
convertPage(destPage, convertToPage, cgaMapping);
}
}
void Screen_EoB::convertPage(int srcPage, int dstPage, const uint8 *cgaMapping) {
uint8 *src = getPagePtr(srcPage);
uint8 *dst = getPagePtr(dstPage);
if (src == dst)
return;
if (_renderMode == Common::kRenderCGA) {
if (cgaMapping)
generateCGADitheringTables(cgaMapping);
uint16 *d = (uint16 *)dst;
uint8 tblSwitch = 0;
for (int height = SCREEN_H; height; height--) {
const uint16 *table = _cgaDitheringTables[(tblSwitch++) & 1];
for (int width = SCREEN_W / 2; width; width--) {
WRITE_LE_UINT16(d++, table[((src[1] & 0x0F) << 4) | (src[0] & 0x0F)]);
src += 2;
}
}
} else if (_renderMode == Common::kRenderEGA && !_useHiResEGADithering) {
uint32 len = SCREEN_W * SCREEN_H;
while (len--)
*dst++ = *src++ & 0x0F;
} else {
copyPage(srcPage, dstPage);
}
if (dstPage == 0 || dstPage == 1)
_forceFullUpdate = true;
}
void Screen_EoB::setScreenPalette(const Palette &pal) {
if (_useHiResEGADithering && pal.getNumColors() != 16) {
generateEGADitheringTable(pal);
} else if (_renderMode == Common::kRenderEGA && pal.getNumColors() == 16) {
_screenPalette->copy(pal);
_system->getPaletteManager()->setPalette(_screenPalette->getData(), 0, _screenPalette->getNumColors());
} else if (_renderMode != Common::kRenderCGA && _renderMode != Common::kRenderEGA) {
Screen::setScreenPalette(pal);
}
}
void Screen_EoB::getRealPalette(int num, uint8 *dst) {
if (_renderMode == Common::kRenderCGA || _renderMode == Common::kRenderEGA) {
const uint8 *pal = _screenPalette->getData();
for (int i = 0; i < 16; ++i) {
dst[0] = (pal[0] << 2) | (pal[0] & 3);
dst[1] = (pal[1] << 2) | (pal[1] & 3);
dst[2] = (pal[2] << 2) | (pal[2] & 3);
dst += 3;
pal += 3;
}
} else {
Screen::getRealPalette(num, dst);
}
}
uint8 *Screen_EoB::encodeShape(uint16 x, uint16 y, uint16 w, uint16 h, bool encode8bit, const uint8 *cgaMapping) {
uint8 *shp = 0;
uint16 shapesize = 0;
uint8 *srcLineStart = getPagePtr(_curPage | 1) + y * 320 + (x << 3);
uint8 *src = srcLineStart;
if (_renderMode == Common::kRenderEGA && !_useHiResEGADithering)
encode8bit = false;
if (_renderMode == Common::kRenderCGA) {
if (cgaMapping)
generateCGADitheringTables(cgaMapping);
shapesize = h * (w << 2) + 4;
shp = new uint8[shapesize];
memset(shp, 0, shapesize);
uint8 *dst = shp;
*dst++ = 4;
*dst++ = (h & 0xFF);
*dst++ = (w & 0xFF);
*dst++ = (h & 0xFF);
uint8 *dst2 = dst + (h * (w << 1));
uint8 tblSwitch = 0;
uint16 h1 = h;
while (h1--) {
uint16 w1 = w << 1;
const uint16 *table = _cgaDitheringTables[(tblSwitch++) & 1];
while (w1--) {
uint16 p0 = table[((src[1] & 0x0F) << 4) | (src[0] & 0x0F)];
uint16 p1 = table[((src[3] & 0x0F) << 4) | (src[2] & 0x0F)];
*dst++ = ((p0 & 0x0003) << 6) | ((p0 & 0x0300) >> 4) | ((p1 & 0x0003) << 2) | ((p1 & 0x0300) >> 8);
uint8 msk = 0;
for (int i = 0; i < 4; i++) {
if (!src[3 - i])
msk |= (3 << (i << 1));
}
*dst2++ = msk;
src += 4;
}
srcLineStart += SCREEN_W;
src = srcLineStart;
}
} else if (encode8bit) {
uint16 h1 = h;
while (h1--) {
uint8 *lineEnd = src + (w << 3);
do {
if (!*src++) {
shapesize++;
uint8 *startZeroPos = src;
while (src != lineEnd && *src == 0)
src++;
uint16 numZero = src - startZeroPos + 1;
if (numZero >> 8)
shapesize += 2;
}
shapesize++;
} while (src != lineEnd);
srcLineStart += SCREEN_W;
src = srcLineStart;
}
shapesize += 4;
shp = new uint8[shapesize];
memset(shp, 0, shapesize);
uint8 *dst = shp;
*dst++ = 8;
*dst++ = (h & 0xFF);
*dst++ = (w & 0xFF);
*dst++ = (h & 0xFF);
srcLineStart = getPagePtr(_curPage | 1) + y * 320 + (x << 3);
src = srcLineStart;
h1 = h;
while (h1--) {
uint8 *lineEnd = src + (w << 3);
do {
uint8 val = *src++;
if (!val) {
*dst++ = 0;
uint8 *startZeroPos = src;
while (src != lineEnd && *src == 0)
src++;
uint16 numZero = src - startZeroPos + 1;
if (numZero >> 8) {
*dst++ = 255;
*dst++ = 0;
numZero -= 255;
}
val = numZero & 0xFF;
}
*dst++ = val;
} while (src != lineEnd);
srcLineStart += SCREEN_W;
src = srcLineStart;
}
} else {
uint8 nib = 0, col = 0;
uint8 *colorMap = 0;
if (_renderMode != Common::kRenderEGA || _useHiResEGADithering) {
colorMap = new uint8[0x100];
memset(colorMap, 0xFF, 0x100);
}
shapesize = h * (w << 2) + 20;
shp = new uint8[shapesize];
memset(shp, 0, shapesize);
uint8 *dst = shp;
*dst++ = 2;
*dst++ = (h & 0xFF);
*dst++ = (w & 0xFF);
*dst++ = (h & 0xFF);
if (_renderMode != Common::kRenderEGA || _useHiResEGADithering) {
memset(dst, 0xFF, 0x10);
} else {
for (int i = 0; i < 16; i++)
dst[i] = i;
}
uint8 *pal = dst;
dst += 16;
nib = col = 0;
uint16 h1 = h;
while (h1--) {
uint16 w1 = w << 3;
while (w1--) {
uint8 s = *src++;
uint8 c = s & 0x0F;
if (colorMap) {
c = colorMap[s];
if (c == 0xFF) {
if (col < 0x10) {
*pal++ = s;
c = colorMap[s] = col++;
} else {
c = 0;
}
}
}
if (++nib & 1)
*dst = c << 4;
else
*dst++ |= c;
}
srcLineStart += SCREEN_W;
src = srcLineStart;
}
delete[] colorMap;
}
return shp;
}
void Screen_EoB::drawShape(uint8 pageNum, const uint8 *shapeData, int x, int y, int sd, int flags, ...) {
uint8 *dst = getPagePtr(pageNum);
const uint8 *src = shapeData;
if (!src)
return;
va_list args;
va_start(args, flags);
uint8 *ovl = (flags & 2) ? va_arg(args, uint8 *) : 0;
va_end(args);
if (sd != -1) {
const ScreenDim *dm = getScreenDim(sd);
setShapeFrame(dm->sx, dm->sy, dm->sx + dm->w, dm->sy + dm->h);
x += (_dsX1 << 3);
y += _dsY1;
}
dst += (_dsX1 << 3);
int16 dX = x - (_dsX1 << 3);
int16 dY = y;
int16 dW = _dsX2 - _dsX1;
uint8 pixelsPerByte = *src++ ;
uint16 dH = *src++;
uint16 width = (*src++) << 3;
uint16 transOffset = (pixelsPerByte == 4) ? (dH * width) >> 2 : 0;
src++;
int rX = x;
int rY = y;
int rW = width + 8;
int rH = dH;
uint16 w2 = width;
int d = dY - _dsY1;
int pixelStep = (flags & 1) ? -1 : 1;
if (pixelsPerByte == 8) {
uint16 marginLeft = 0;
uint16 marginRight = 0;
if (d < 0) {
dH += d;
if (dH <= 0)
return;
d = -d;
for (int i = 0; i < d; i++) {
marginLeft = width;
for (int ii = 0; ii < marginLeft; ii++) {
if (!*src++)
marginLeft = marginLeft + 1 - *src++;
}
}
dY = _dsY1;
}
d = _dsY2 - dY;
if (d < 1)
return;
if (d < dH)
dH = d;
marginLeft = 0;
if (dX < 0) {
width += dX;
marginLeft = -dX;
if (marginLeft >= w2)
return;
dX = 0;
}
marginRight = 0;
d = (dW << 3) - dX;
if (d < 1)
return;
if (d < width) {
width = d;
marginRight = w2 - marginLeft - width;
}
dst += (dY * SCREEN_W + dX);
uint8 *dstL = dst;
if (pageNum == 0 || pageNum == 1)
addDirtyRect(rX, rY, rW, rH);
while (dH--) {
int16 xpos = (int16) marginLeft;
if (flags & 1) {
for (int i = 0; i < w2; i++) {
if (*src++ == 0) {
i += (*src - 1);
src += (*src - 1);
}
}
src--;
}
const uint8 *src2 = src;
if (xpos) {
do {
uint8 val = (flags & 1) ? *(src - 1) : *src;
while (val && xpos) {
src += pixelStep;
xpos--;
val = (flags & 1) ? *(src - 1) : *src;
}
val = (flags & 1) ? *(src - 1) : *src;
if (!val) {
src += pixelStep;
uint8 bt = (flags & 1) ? src[1] : src[0];
src += pixelStep;
xpos = xpos - bt;
}
} while (xpos > 0);
}
dst -= xpos;
xpos += width;
while (xpos > 0) {
uint8 c = *src;
uint8 m = (flags & 1) ? *(src - 1) : c;
src += pixelStep;
if (m) {
drawShapeSetPixel(dst, c);
dst++;
xpos--;
} else {
uint8 len = (flags & 1) ? src[1] : src[0];
dst += len;
xpos -= len;
src += pixelStep;
}
}
xpos += marginRight;
if (xpos) {
do {
uint8 val = (flags & 1) ? *(src - 1) : *src;
while (val && xpos) {
src += pixelStep;
xpos--;
val = (flags & 1) ? *(src - 1) : *src;
}
val = (flags & 1) ? *(src - 1) : *src;
if (!val) {
src += pixelStep;
uint8 bt = (flags & 1) ? src[1] : src[0];
src += pixelStep;
xpos = xpos - bt;
}
} while (xpos > 0);
}
dstL += SCREEN_W;
dst = dstL;
if (flags & 1)
src = src2 + 1;
}
} else {
const uint8 *pal = 0;
uint8 cgaPal[4];
memset(cgaPal, 0, 4);
if (pixelsPerByte == 2) {
pal = ovl ? ovl : src;
src += 16;
} else {
static const uint8 cgaDefOvl[] = { 0x00, 0x55, 0xAA, 0xFF };
pal = ovl ? ovl : cgaDefOvl;
for (int i = 0; i < 4; i++)
cgaPal[i] = pal[i] & 3;
pal = cgaPal;
}
if (d < 0) {
d = -d;
if (d >= dH)
return;
src += (d * (width / pixelsPerByte));
d = dY + dH - _dsY1;
if (d >= 0) {
dH = d;
dY = _dsY1;
d = _dsY2 - dY;
}
} else {
d = _dsY2 - dY;
}
if (d < 1)
return;
if (d < dH)
dH = d;
bool trimL = false;
uint8 dXbitAlign = dX & (pixelsPerByte - 1);
if (dX < 0) {
width += dX;
d = -dX;
if (flags & 1)
src -= (d / pixelsPerByte);
else
src += (d / pixelsPerByte);
if (d >= w2)
return;
dX = 0;
trimL = true;
}
d = (dW << 3) - dX;
if (d < 1)
return;
if (d < width)
width = d;
dst += (dY * SCREEN_W + dX);
if (pageNum == 0 || pageNum == 1)
addDirtyRect(rX, rY, rW, rH);
int pitch = SCREEN_W - width;
int16 lineSrcStep = (w2 - width) / pixelsPerByte;
uint8 lineSrcStepRemainder = (w2 - width) % pixelsPerByte;
w2 /= pixelsPerByte;
if (flags & 1)
src += (w2 - 1);
uint8 pixelPacking = 8 / pixelsPerByte;
uint8 pixelPackingMask = 0;
for (int i = 0; i < pixelPacking; i++)
pixelPackingMask |= (1 << i);
if (trimL && (dXbitAlign > lineSrcStepRemainder))
lineSrcStep--;
uint8 bitShDef = 8 - pixelPacking;
if (flags & 1) {
lineSrcStep = (w2 << 1) - lineSrcStep;
bitShDef = 0;
}
uint8 bitShLineStart = bitShDef;
if (trimL)
bitShLineStart -= (dXbitAlign * pixelStep * pixelPacking);
while (dH--) {
int16 wd = width;
uint8 in = 0;
uint8 trans = 0;
uint8 shift = bitShLineStart;
uint8 shSwtch = bitShLineStart;
while (wd--) {
if (shift == shSwtch) {
in = *src;
trans = src[transOffset];
src += pixelStep;
shSwtch = bitShDef;
}
uint8 col = (pixelsPerByte == 2) ? pal[(in >> shift) & pixelPackingMask] : (*dst & ((trans >> shift) & (pixelPackingMask))) | pal[(in >> shift) & pixelPackingMask];
if (col || pixelsPerByte == 4)
drawShapeSetPixel(dst, col);
dst++;
shift = ((shift - (pixelStep * pixelPacking)) & 7);
}
src += lineSrcStep;
dst += pitch;
}
}
}
const uint8 *Screen_EoB::scaleShape(const uint8 *shapeData, int steps) {
setShapeFadeMode(1, steps ? true : false);
while (shapeData && steps--)
shapeData = scaleShapeStep(shapeData);
return shapeData;
}
const uint8 *Screen_EoB::scaleShapeStep(const uint8 *shp) {
uint8 *dst = (shp != _dsTempPage) ? _dsTempPage : _dsTempPage + 6000;
uint8 *d = dst;
uint8 pixelsPerByte = *d++ = *shp++;
assert(pixelsPerByte > 1);
uint16 h = shp[0] + 1;
d[0] = d[2] = (h << 1) / 3;
uint16 w = shp[1];
uint16 w2 = (w << 3) / pixelsPerByte;
uint16 t = ((w << 1) % 3) ? 1 : 0;
d[1] = ((w << 1) / 3) + t;
uint32 transOffsetSrc = (pixelsPerByte == 4) ? (shp[0] * shp[1]) << 1 : 0;
uint32 transOffsetDst = (pixelsPerByte == 4) ? (d[0] * d[1]) << 1 : 0;
shp += 3;
d += 3;
if (pixelsPerByte == 2) {
int i = 0;
while (i < 16) {
if (!shp[i]) {
i = -i;
break;
}
i++;
}
if (i >= 0)
i = 0;
else
i = -i;
_dsScaleTrans = (i << 4) | (i & 0x0F);
for (int ii = 0; ii < 16; ii++)
*d++ = *shp++;
}
_dsDiv = w2 / 3;
_dsRem = w2 % 3;
while (--h) {
if (pixelsPerByte == 2)
scaleShapeProcessLine4Bit(d, shp);
else
scaleShapeProcessLine2Bit(d, shp, transOffsetDst, transOffsetSrc);
if (!--h)
break;
if (pixelsPerByte == 2)
scaleShapeProcessLine4Bit(d, shp);
else
scaleShapeProcessLine2Bit(d, shp, transOffsetDst, transOffsetSrc);
if (!--h)
break;
shp += w2;
}
return (const uint8 *)dst;
}
const uint8 *Screen_EoB::generateShapeOverlay(const uint8 *shp, int paletteOverlayIndex) {
if (*shp != 2)
return 0;
shp += 4;
uint8 *ovl = getFadeTable(paletteOverlayIndex);
for (int i = 0; i < 16; i++)
_shapeOverlay[i] = ovl[shp[i]];
return _shapeOverlay;
}
void Screen_EoB::setShapeFrame(int x1, int y1, int x2, int y2) {
_dsX1 = x1;
_dsY1 = y1;
_dsX2 = x2;
_dsY2 = y2;
}
void Screen_EoB::setShapeFadeMode(uint8 i, bool b) {
if (!i || i == 1)
_shapeFadeMode[i] = b;
}
void Screen_EoB::setGfxParameters(int x, int y, int col) {
_gfxX = x;
_gfxY = y;
_gfxCol = col;
}
void Screen_EoB::drawExplosion(int scale, int radius, int numElements, int stepSize, int aspectRatio, const uint8 *colorTable, int colorTableSize) {
int ymin = 0;
int ymax = _gfxMaxY[scale];
int xmin = -100;
int xmax = 276;
if (scale)
--scale;
hideMouse();
const ScreenDim *dm = getScreenDim(5);
int rX1 = dm->sx << 3;
int rY1 = dm->sy;
int rX2 = rX1 + (dm->w << 3);
int rY2 = rY1 + dm->h - 1;
int16 gx2 = _gfxX;
int16 gy2 = _gfxY;
int16 *ptr2 = (int16 *)_dsTempPage;
int16 *ptr3 = (int16 *)&_dsTempPage[300];
int16 *ptr4 = (int16 *)&_dsTempPage[600];
int16 *ptr5 = (int16 *)&_dsTempPage[900];
int16 *ptr6 = (int16 *)&_dsTempPage[1200];
int16 *ptr7 = (int16 *)&_dsTempPage[1500];
int16 *ptr8 = (int16 *)&_dsTempPage[1800];
if (numElements > 150)
numElements = 150;
for (int i = 0; i < numElements; i++) {
ptr2[i] = ptr3[i] = 0;
ptr4[i] = _vm->_rnd.getRandomNumberRng(0, radius) - (radius >> 1);
ptr5[i] = _vm->_rnd.getRandomNumberRng(0, radius) - (radius >> 1) - (radius >> (8 - aspectRatio));
ptr7[i] = _vm->_rnd.getRandomNumberRng(1024 / stepSize, 2048 / stepSize);
ptr8[i] = scale << 8;
}
for (int l = 2; l;) {
if (l != 2) {
for (int i = numElements - 1; i >= 0; i--) {
int16 px = ((ptr2[i] >> 6) >> scale) + gx2;
int16 py = ((ptr3[i] >> 6) >> scale) + gy2;
if (py > ymax)
py = ymax;
if (posWithinRect(px, py, rX1, rY1, rX2, rY2))
setPagePixel(0, px, py, ptr6[i]);
}
}
l = 0;
for (int i = 0; i < numElements; i++) {
uint32 end = _system->getMillis() + 1;
if (ptr4[i] <= 0)
ptr4[i]++;
else
ptr4[i]--;
ptr2[i] += ptr4[i];
ptr5[i] += 5;
ptr3[i] += ptr5[i];
ptr8[i] += ptr7[i];
int16 px = ((ptr2[i] >> 6) >> scale) + gx2;
int16 py = ((ptr3[i] >> 6) >> scale) + gy2;
if (py >= ymax || py < ymin)
ptr5[i] = -(ptr5[i] >> 1);
if (px >= xmax || px < xmin)
ptr4[i] = -(ptr4[i] >> 1);
if (py > ymax)
py = ymax;
int pxVal1 = 0;
if (posWithinRect(px, py, 0, 0, 319, 199)) {
pxVal1 = getPagePixel(2, px, py);
ptr6[i] = getPagePixel(0, px, py);
}
assert((ptr8[i] >> 8) < colorTableSize);
int pxVal2 = colorTable[ptr8[i] >> 8];
if (pxVal2) {
l = 1;
if (pxVal1 == _gfxCol && posWithinRect(px, py, rX1, rY1, rX2, rY2)) {
setPagePixel(0, px, py, pxVal2);
if (i % 5 == 0) {
updateScreen();
uint32 cur = _system->getMillis();
if (end > cur)
_system->delayMillis(end - cur);
}
}
} else {
ptr7[i] = 0;
}
}
}
showMouse();
}
void Screen_EoB::drawVortex(int numElements, int radius, int stepSize, int, int disorder, const uint8 *colorTable, int colorTableSize) {
int16 *xCoords = (int16 *)_dsTempPage;
int16 *yCoords = (int16 *)&_dsTempPage[300];
int16 *xMod = (int16 *)&_dsTempPage[600];
int16 *yMod = (int16 *)&_dsTempPage[900];
int16 *pixBackup = (int16 *)&_dsTempPage[1200];
int16 *colTableStep = (int16 *)&_dsTempPage[1500];
int16 *colTableIndex = (int16 *)&_dsTempPage[1800];
int16 *pixDelay = (int16 *)&_dsTempPage[2100];
hideMouse();
int cp = _curPage;
if (numElements > 150)
numElements = 150;
int cx = 88;
int cy = 48;
radius <<= 6;
for (int i = 0; i < numElements; i++) {
int16 v38 = _vm->_rnd.getRandomNumberRng(radius >> 2, radius);
int16 stepSum = 0;
int16 sqsum = 0;
while (sqsum < v38) {
stepSum += stepSize;
sqsum += stepSum;
}
switch (_vm->_rnd.getRandomNumber(255) & 3) {
case 0:
xCoords[i] = 32;
yCoords[i] = sqsum;
xMod[i] = stepSum;
yMod[i] = 0;
break;
case 1:
xCoords[i] = sqsum;
yCoords[i] = 32;
xMod[i] = 0;
yMod[i] = stepSum;
break;
case 2:
xCoords[i] = 32;
yCoords[i] = -sqsum;
xMod[i] = stepSum;
yMod[i] = 0;
break;
default:
xCoords[i] = -sqsum;
yCoords[i] = 32;
xMod[i] = 0;
yMod[i] = stepSum;
break;
}
if (_vm->_rnd.getRandomBit()) {
xMod[i] *= -1;
yMod[i] *= -1;
}
colTableStep[i] = _vm->_rnd.getRandomNumberRng(1024 / disorder, 2048 / disorder);
colTableIndex[i] = 0;
pixDelay[i] = _vm->_rnd.getRandomNumberRng(0, disorder >> 2);
}
int d = 0;
for (int i = 2; i;) {
if (i != 2) {
for (int ii = numElements - 1; ii >= 0; ii--) {
int16 px = CLIP((xCoords[ii] >> 6) + cx, 0, SCREEN_W - 1);
int16 py = CLIP((yCoords[ii] >> 6) + cy, 0, SCREEN_H - 1);
setPagePixel(0, px, py, pixBackup[ii]);
}
}
i = 0;
int r = (stepSize >> 1) + (stepSize >> 2) + (stepSize >> 3);
uint32 nextDelay = _system->getMillis() + 1;
for (int ii = 0; ii < numElements; ii++) {
if (pixDelay[ii] == 0) {
if (xCoords[ii] > 0) {
xMod[ii] -= ((xMod[ii] > 0) ? stepSize : r);
} else {
xMod[ii] += ((xMod[ii] < 0) ? stepSize : r);
}
if (yCoords[ii] > 0) {
yMod[ii] -= ((yMod[ii] > 0) ? stepSize : r);
} else {
yMod[ii] += ((yMod[ii] < 0) ? stepSize : r);
}
xCoords[ii] += xMod[ii];
yCoords[ii] += yMod[ii];
colTableIndex[ii] += colTableStep[ii];
} else {
pixDelay[ii]--;
}
int16 px = CLIP((xCoords[ii] >> 6) + cx, 0, SCREEN_W - 1);
int16 py = CLIP((yCoords[ii] >> 6) + cy, 0, SCREEN_H - 1);
uint8 tc1 = ((disorder >> 2) <= d) ? getPagePixel(2, px, py) : 0;
pixBackup[ii] = getPagePixel(0, px, py);
uint8 tblIndex = CLIP(colTableIndex[ii] >> 8, 0, colorTableSize - 1);
uint8 tc2 = colorTable[tblIndex];
if (tc2) {
i = 1;
if (tc1 == _gfxCol && !pixDelay[ii]) {
setPagePixel(0, px, py, tc2);
if (ii % 15 == 0) {
updateScreen();
uint32 cur = _system->getMillis();
if (nextDelay > cur)
_system->delayMillis(nextDelay - cur);
nextDelay += 1;
}
}
} else {
colTableStep[ii] = 0;
}
}
d++;
}
_curPage = cp;
showMouse();
}
void Screen_EoB::fadeTextColor(Palette *pal, int color1, int rate) {
uint8 *col = pal->getData();
for (bool loop = true; loop;) {
loop = true;
uint32 end = _system->getMillis() + _vm->tickLength();
loop = false;
for (int ii = 0; ii < 3; ii++) {
uint8 c = col[color1 * 3 + ii];
if (c > rate) {
col[color1 * 3 + ii] -= rate;
loop = true;
} else if (c) {
col[color1 * 3 + ii] = 0;
loop = true;
}
}
if (loop) {
setScreenPalette(*pal);
updateScreen();
uint32 cur = _system->getMillis();
if (end > cur)
_system->delayMillis(end - cur);
}
}
}
bool Screen_EoB::delayedFadePalStep(Palette *fadePal, Palette *destPal, int rate) {
bool res = false;
uint8 *s = fadePal->getData();
uint8 *d = destPal->getData();
for (int i = 0; i < 765; i++) {
int fadeVal = *s++;
int dstCur = *d;
int diff = ABS(fadeVal - dstCur);
if (diff == 0) {
d++;
continue;
}
res = true;
diff = MIN(diff, rate);
if (dstCur < fadeVal)
*d += diff;
else
*d -= diff;
d++;
}
return res;
}
int Screen_EoB::getRectSize(int w, int h) {
return w * h;
}
void Screen_EoB::setFadeTableIndex(int index) {
_fadeDataIndex = (CLIP(index, 0, 7) << 8);
}
void Screen_EoB::createFadeTable(uint8 *palData, uint8 *dst, uint8 rootColor, uint8 weight) {
if (!palData)
return;
uint8 *src = palData + 3 * rootColor;
uint8 r = *src++;
uint8 g = *src++;
uint8 b = *src;
uint8 tr, tg, tb;
src = palData + 3;
*dst++ = 0;
weight >>= 1;
for (uint8 i = 1; i; i++) {
uint16 tmp = (uint16)((*src - r) * weight) << 1;
tr = *src++ - ((tmp >> 8) & 0xFF);
tmp = (uint16)((*src - g) * weight) << 1;
tg = *src++ - ((tmp >> 8) & 0xFF);
tmp = (uint16)((*src - b) * weight) << 1;
tb = *src++ - ((tmp >> 8) & 0xFF);
uint8 *d = palData + 3;
uint16 v = 0xFFFF;
uint8 col = rootColor;
for (uint8 ii = 1; ii; ii++) {
int a = *d++ - tr;
int t = a * a;
a = *d++ - tg;
t += (a * a);
a = *d++ - tb;
t += (a * a);
if (t <= v && (ii == rootColor || ii != i)) {
v = t;
col = ii ;
}
}
*dst++ = col;
}
}
uint8 *Screen_EoB::getFadeTable(int index) {
return (index >= 0 && index < 5) ? &_fadeData[index << 8] : 0;
}
const uint16 *Screen_EoB::getCGADitheringTable(int index) {
return !(index & ~1) ? _cgaDitheringTables[index] : 0;
}
const uint8 *Screen_EoB::getEGADitheringTable() {
return _egaDitheringTable;
}
void Screen_EoB::updateDirtyRects() {
if (!_useHiResEGADithering) {
Screen::updateDirtyRects();
return;
}
if (_forceFullUpdate) {
ditherRect(getCPagePtr(0), _egaDitheringTempPage, SCREEN_W * 2, SCREEN_W, SCREEN_H);
_system->copyRectToScreen(_egaDitheringTempPage, SCREEN_W * 2, 0, 0, SCREEN_W * 2, SCREEN_H * 2);
} else {
const byte *page0 = getCPagePtr(0);
Common::List<Common::Rect>::iterator it;
for (it = _dirtyRects.begin(); it != _dirtyRects.end(); ++it) {
ditherRect(page0 + it->top * SCREEN_W + it->left, _egaDitheringTempPage, SCREEN_W * 2, it->width(), it->height());
_system->copyRectToScreen(_egaDitheringTempPage, SCREEN_W * 2, it->left * 2, it->top * 2, it->width() * 2, it->height() * 2);
}
}
_forceFullUpdate = false;
_dirtyRects.clear();
}
void Screen_EoB::ditherRect(const uint8 *src, uint8 *dst, int dstPitch, int srcW, int srcH, int colorKey) {
while (srcH--) {
uint8 *dst2 = dst + dstPitch;
for (int i = 0; i < srcW; i++) {
int in = *src++;
if (in != colorKey) {
in = _egaDitheringTable[in];
*dst++ = *dst2++ = in >> 4;
*dst++ = *dst2++ = in & 0x0F;
} else {
dst[0] = dst[1] = dst2[0] = dst2[1] = colorKey;
dst += 2;
dst2 += 2;
}
}
src += (SCREEN_W - srcW);
dst += ((dstPitch - srcW) * 2);
}
}
void Screen_EoB::drawShapeSetPixel(uint8 *dst, uint8 col) {
if ((_renderMode != Common::kRenderCGA && _renderMode != Common::kRenderEGA) || _useHiResEGADithering) {
if (_shapeFadeMode[0]) {
if (_shapeFadeMode[1]) {
col = *dst;
} else {
_shapeFadeInternal &= 7;
col = *(dst + _shapeFadeInternal++);
}
}
if (_shapeFadeMode[1]) {
uint8 cnt = _shapeFadeMode[1];
while (cnt--)
col = _fadeData[_fadeDataIndex + col];
}
}
*dst = col;
}
void Screen_EoB::scaleShapeProcessLine2Bit(uint8 *&shpDst, const uint8 *&shpSrc, uint32 transOffsetDst, uint32 transOffsetSrc) {
for (int i = 0; i < _dsDiv; i++) {
shpDst[0] = (_cgaScaleTable[shpSrc[0]] << 2) | (shpSrc[1] >> 6);
shpDst[1] = ((shpSrc[1] & 0x0F) << 4) | ((shpSrc[2] >> 2) & 0x0F);
shpDst[transOffsetDst] = (_cgaScaleTable[shpSrc[transOffsetSrc]] << 2) | (shpSrc[transOffsetSrc + 1] >> 6);
shpDst[transOffsetDst + 1] = ((shpSrc[transOffsetSrc + 1] & 0x0F) << 4) | ((shpSrc[transOffsetSrc + 2] >> 2) & 0x0F);
shpSrc += 3;
shpDst += 2;
}
if (_dsRem == 1) {
shpDst[0] = _cgaScaleTable[shpSrc[0]] << 2;
shpDst[1] = 0;
shpDst[transOffsetDst] = (_cgaScaleTable[shpSrc[transOffsetSrc]] << 2) | 3;
shpDst[transOffsetDst + 1] = 0xFF;
shpSrc++;
shpDst += 2;
} else if (_dsRem == 2) {
shpDst[0] = (_cgaScaleTable[shpSrc[0]] << 2) | (shpSrc[1] >> 6);
shpDst[1] = (shpSrc[1] & 0x3F) << 2;
shpDst[transOffsetDst] = (_cgaScaleTable[shpSrc[transOffsetSrc]] << 2) | (shpSrc[transOffsetSrc + 1] >> 6);
shpDst[transOffsetDst + 1] = ((shpSrc[transOffsetSrc + 1] & 0x3F) << 2) | 3;
shpSrc += 2;
shpDst += 2;
}
}
void Screen_EoB::scaleShapeProcessLine4Bit(uint8 *&dst, const uint8 *&src) {
for (int i = 0; i < _dsDiv; i++) {
*dst++ = *src++;
*dst++ = (READ_BE_UINT16(src) >> 4) & 0xFF;
src += 2;
}
if (_dsRem == 1) {
*dst++ = *src++;
*dst++ = _dsScaleTrans;
} else if (_dsRem == 2) {
*dst++ = (src[0] & 0xF0) | (src[1] >> 4);
src += 2;
*dst++ = _dsScaleTrans;
*dst++ = _dsScaleTrans;
*dst++ = _dsScaleTrans;
}
}
bool Screen_EoB::posWithinRect(int posX, int posY, int x1, int y1, int x2, int y2) {
if (posX < x1 || posX > x2 || posY < y1 || posY > y2)
return false;
return true;
}
void Screen_EoB::generateEGADitheringTable(const Palette &pal) {
assert(_egaDitheringTable);
const uint8 *src = pal.getData();
uint8 *dst = _egaDitheringTable;
for (int i = 256; i; i--) {
int r = *src++;
int g = *src++;
int b = *src++;
uint8 col = 0;
uint16 min = 0x2E83;
for (int ii = 256; ii; ii--) {
const uint8 *palEntry = _egaMatchTable + (ii - 1) * 3;
if (*palEntry == 0xFF)
continue;
int e_r = palEntry[0] - r;
int e_g = palEntry[1] - g;
int e_b = palEntry[2] - b;
uint16 s = (e_r * e_r) + (e_g * e_g) + (e_b * e_b);
if (s <= min) {
min = s;
col = ii - 1;
}
}
*dst++ = col;
}
}
void Screen_EoB::generateCGADitheringTables(const uint8 *mappingData) {
for (int i = 0; i < 256; i++) {
_cgaDitheringTables[0][i] = (mappingData[(i >> 4) + 16] << 8) | mappingData[i & 0x0F];
_cgaDitheringTables[1][i] = (mappingData[i >> 4] << 8) | mappingData[(i & 0x0F) + 16];
}
}
const uint8 Screen_EoB::_egaMatchTable[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x1E, 0x00, 0x1E, 0x00, 0x00, 0x1E, 0x1E, 0x1E, 0x00, 0x00, 0x1E,
0x00, 0x1E, 0x1E, 0x0F, 0x00, 0x1E, 0x1E, 0x1E, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x2D, 0x0F, 0x2D,
0x0F, 0x0F, 0x2D, 0x2D, 0x2D, 0x0F, 0x0F, 0x2D, 0x0F, 0x2D, 0x2D, 0x2D, 0x0F, 0x2D, 0x2D, 0x2D,
0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x2A, 0x00, 0x1E, 0x1E, 0x00, 0x1E, 0x2A, 0x1E, 0x00, 0x1E, 0x1E,
0x00, 0x2A, 0x1E, 0x0F, 0x1E, 0x1E, 0x1E, 0x2A, 0x0F, 0x0F, 0x21, 0x0F, 0x0F, 0x36, 0x0F, 0x2D,
0x21, 0x0F, 0x2D, 0x36, 0x2D, 0x0F, 0x21, 0x2D, 0x0F, 0x36, 0x2D, 0x2D, 0x21, 0x2D, 0x2D, 0x36,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x2A, 0x00, 0x00, 0x2A, 0x1E, 0x1E, 0x1E, 0x00, 0x1E,
0x1E, 0x1E, 0x1E, 0x21, 0x00, 0x1E, 0x2A, 0x1E, 0x0F, 0x21, 0x0F, 0x0F, 0x21, 0x2D, 0x0F, 0x36,
0x0F, 0x0F, 0x36, 0x2D, 0x2D, 0x21, 0x0F, 0x2D, 0x21, 0x2D, 0x2D, 0x36, 0x0F, 0x2D, 0x36, 0x2D,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x2A, 0x2A, 0x1E, 0x1E, 0x1E, 0x1E,
0x1E, 0x2A, 0x1E, 0x21, 0x1E, 0x1E, 0x2A, 0x2A, 0x0F, 0x21, 0x21, 0x0F, 0x21, 0x36, 0x0F, 0x36,
0x21, 0x0F, 0x36, 0x36, 0x2D, 0x21, 0x21, 0x2D, 0x21, 0x36, 0x2D, 0x36, 0x21, 0x2D, 0x36, 0x36,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x2A, 0x00, 0x00, 0x2A,
0x00, 0x1E, 0x2A, 0x0F, 0x00, 0x2A, 0x1E, 0x1E, 0x21, 0x0F, 0x0F, 0x21, 0x0F, 0x2D, 0x21, 0x2D,
0x0F, 0x21, 0x2D, 0x2D, 0x36, 0x0F, 0x0F, 0x36, 0x0F, 0x2D, 0x36, 0x2D, 0x0F, 0x36, 0x2D, 0x2D,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x2A,
0x00, 0x2A, 0x2A, 0x0F, 0x1E, 0x2A, 0x1E, 0x2A, 0x21, 0x0F, 0x21, 0x21, 0x0F, 0x36, 0x21, 0x2D,
0x21, 0x21, 0x2D, 0x36, 0x36, 0x0F, 0x21, 0x36, 0x0F, 0x36, 0x36, 0x2D, 0x21, 0x36, 0x2D, 0x36,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0x2A, 0x15, 0x00, 0x2A, 0x21, 0x1E, 0x21, 0x15, 0x0F, 0x21, 0x15, 0x2D, 0x21, 0x2F,
0x0F, 0x21, 0x2F, 0x2D, 0x36, 0x15, 0x0F, 0x36, 0x15, 0x2D, 0x36, 0x2F, 0x0F, 0x36, 0x2F, 0x2D,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x2A, 0x2A, 0x2A, 0x21, 0x21, 0x21, 0x21, 0x21, 0x36, 0x21, 0x36,
0x21, 0x21, 0x36, 0x36, 0x36, 0x21, 0x21, 0x36, 0x21, 0x36, 0x36, 0x36, 0x21, 0x36, 0x36, 0x36,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x15, 0x15, 0x15, 0x15, 0x15, 0x2F, 0x15, 0x2F,
0x15, 0x15, 0x2F, 0x2F, 0x2F, 0x15, 0x15, 0x2F, 0x15, 0x2F, 0x2F, 0x2F, 0x15, 0x2F, 0x2F, 0x2F,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x15, 0x15, 0x3F, 0x15, 0x2F,
0x2F, 0x15, 0x2F, 0x3F, 0x2F, 0x15, 0x2F, 0x2F, 0x15, 0x3F, 0x2F, 0x2F, 0x2F, 0x2F, 0x2F, 0x3F,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x15, 0x3F,
0x15, 0x15, 0x3F, 0x2F, 0x2F, 0x2F, 0x15, 0x2F, 0x2F, 0x2F, 0x2F, 0x3F, 0x15, 0x2F, 0x3F, 0x2F,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0x15, 0x3F, 0x3F, 0x2F, 0x2F, 0x2F, 0x2F, 0x2F, 0x3F, 0x2F, 0x3F, 0x2F, 0x2F, 0x3F, 0x3F,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x15, 0x15, 0x3F, 0x15, 0x2F, 0x3F, 0x2F, 0x15, 0x3F, 0x2F, 0x2F,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x15, 0x3F, 0x3F, 0x2F, 0x2F, 0x3F, 0x2F, 0x3F,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x3F, 0x15, 0x3F, 0x3F, 0x2F,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x3F, 0x3F
};
uint16 *OldDOSFont::_cgaDitheringTable = 0;
int OldDOSFont::_numRef = 0;
OldDOSFont::OldDOSFont(Common::RenderMode mode) : _renderMode(mode) {
_data = 0;
_width = _height = _numGlyphs = 0;
_bitmapOffsets = 0;
_numRef++;
if (!_cgaDitheringTable && _numRef == 1) {
_cgaDitheringTable = new uint16[256];
memset(_cgaDitheringTable, 0, 256 * sizeof(uint16));
static const uint bits[] = { 0, 3, 12, 15 };
for (int i = 0; i < 256; i++)
_cgaDitheringTable[i] = (bits[i & 3] << 8) | (bits[(i >> 2) & 3] << 12) | (bits[(i >> 4) & 3] << 0) | (bits[(i >> 6) & 3] << 4);
}
}
OldDOSFont::~OldDOSFont() {
unload();
if (_numRef)
--_numRef;
if (_cgaDitheringTable && !_numRef) {
delete[] _cgaDitheringTable;
_cgaDitheringTable = 0;
}
}
bool OldDOSFont::load(Common::SeekableReadStream &file) {
unload();
_data = new uint8[file.size()];
assert(_data);
file.read(_data, file.size());
if (file.err())
return false;
if (file.size() - 2 != READ_LE_UINT16(_data))
return false;
_width = _data[0x103];
_height = _data[0x102];
_numGlyphs = 255;
_bitmapOffsets = (uint16 *)(_data + 2);
for (int i = 0; i < _numGlyphs; ++i)
_bitmapOffsets[i] = READ_LE_UINT16(&_bitmapOffsets[i]);
return true;
}
int OldDOSFont::getCharWidth(uint16 c) const {
if (c >= _numGlyphs)
return 0;
return _width;
}
void OldDOSFont::drawChar(uint16 c, byte *dst, int pitch) const {
static const uint8 renderMaskTable6[] = { 0xFC, 0x00, 0x7E, 0x00, 0x3F, 0x00, 0x1F, 0x80, 0x0F, 0xC0, 0x07, 0xE0, 0x03, 0xF0, 0x01, 0xF8 };
static const uint8 renderMaskTable8[] = { 0xFF, 0x00, 0x7F, 0x80, 0x3F, 0xC0, 0x1F, 0xE0, 0x0F, 0xF0, 0x07, 0xF8, 0x03, 0xFC, 0x01, 0xFE };
if (_width != 8 && _width != 6)
error("EOB font rendering not implemented for other font widths than 6 and 8.");
if (_width == 6) {
switch (c) {
case 0x81:
case 0x9A:
c = 0x5D;
break;
case 0x84:
case 0x8E:
c = 0x5B;
break;
case 0x94:
case 0x99:
c = 0x40;
case 0xE1:
// TODO: recheck this: no conversion for '<27>' ?
break;
}
} else if (_width == 8) {
switch (c) {
case 0x81:
case 0x9A:
case 0x5D:
c = 0x1D;
break;
case 0x84:
case 0x5B:
c = 0x1E;
break;
case 0x94:
case 0x40:
c = 0x1F;
break;
case 0x8E:
c = 0x1B;
break;
case 0x99:
c = 0x1C;
break;
case 0xE1:
c = 0x19;
break;
}
}
const uint8 *src = &_data[_bitmapOffsets[c]];
uint8 *dst2 = dst + pitch;
int w = (_width - 1) >> 3;
pitch -= _width;
uint8 color1 = _colorMap[1];
uint8 color2 = _colorMap[0];
static const uint16 cgaColorMask[] = { 0, 0x5555, 0xAAAA, 0xFFFF };
uint16 cgaMask1 = cgaColorMask[color1 & 3];
uint16 cgaMask2 = cgaColorMask[color2 & 3];
if (_renderMode == Common::kRenderCGA || _renderMode == Common::kRenderEGA) {
color1 &= 0x0F;
color2 &= 0x0F;
}
int cH = _height;
while (cH--) {
int cW = w;
uint8 last = 0;
const uint8 *mtbl = _width == 8 ? renderMaskTable8 : renderMaskTable6;
if (_renderMode == Common::kRenderCGA) {
uint8 s = *src++;
uint8 m = *mtbl++;
uint8 in = s | last;
uint16 cmp1 = 0;
uint16 cmp2 = 0;
if (color1) {
in &= m;
cmp1 = _cgaDitheringTable[in];
}
if (color2) {
in = ~in & m;
cmp2 = _cgaDitheringTable[in];
}
uint16 cDst = 0;
uint8 sh = 6;
for (int i = 0; i < _width; i++) {
cDst |= ((dst[i] & 3) << sh);
sh = (sh - 2) & 0x0F;
}
uint16 out = (~(cmp1 | cmp2) & cDst) | (cmp1 & cgaMask1) | (cmp2 & cgaMask2);
sh = 6;
for (int i = 0; i < _width; i++) {
*dst++ = (out >> sh) & 3;
sh = (sh - 2) & 0x0F;
}
last = s;
} else {
for (bool runWidthLoop = true; runWidthLoop;) {
uint8 s = *src++;
uint8 m = *mtbl++;
for (uint8 i = 0x80; i; i >>= 1) {
if (!(m & i)) {
runWidthLoop = false;
break;
}
if (s & i) {
if (color1)
*dst = color1;
} else if (color2) {
*dst = color2;
}
dst++;
}
if (cW)
cW--;
else
runWidthLoop = false;
}
}
dst += pitch;
dst2 += pitch;
}
}
void OldDOSFont::unload() {
delete[] _data;
_data = 0;
_width = _height = _numGlyphs = 0;
_bitmapOffsets = 0;
}
} // End of namespace Kyra
#endif // ENABLE_EOB
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