mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-30 14:14:43 +00:00
466 lines
9.6 KiB
C++
466 lines
9.6 KiB
C++
/* 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.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*
|
|
*/
|
|
|
|
#include "kyra/screen_v2.h"
|
|
|
|
#include "common/endian.h"
|
|
|
|
namespace Kyra {
|
|
|
|
Screen_v2::Screen_v2(KyraEngine_v1 *vm, OSystem *system) : Screen(vm, system), _wsaFrameAnimBuffer(0) {
|
|
_wsaFrameAnimBuffer = new uint8[1024];
|
|
assert(_wsaFrameAnimBuffer);
|
|
}
|
|
|
|
Screen_v2::~Screen_v2() {
|
|
delete[] _wsaFrameAnimBuffer;
|
|
}
|
|
|
|
uint8 *Screen_v2::generateOverlay(const uint8 *palette, uint8 *buffer, int startColor, uint16 factor) {
|
|
if (!palette || !buffer)
|
|
return buffer;
|
|
|
|
factor = MIN<uint16>(255, factor);
|
|
factor >>= 1;
|
|
factor &= 0xFF;
|
|
|
|
const byte col1 = palette[startColor * 3 + 0];
|
|
const byte col2 = palette[startColor * 3 + 1];
|
|
const byte col3 = palette[startColor * 3 + 2];
|
|
|
|
uint8 *dst = buffer;
|
|
*dst++ = 0;
|
|
|
|
for (int i = 1; i != 255; ++i) {
|
|
uint8 processedPalette[3];
|
|
const uint8 *src = palette + i*3;
|
|
byte col;
|
|
|
|
col = *src++;
|
|
col -= ((((col - col1) * factor) << 1) >> 8) & 0xFF;
|
|
processedPalette[0] = col;
|
|
|
|
col = *src++;
|
|
col -= ((((col - col2) * factor) << 1) >> 8) & 0xFF;
|
|
processedPalette[1] = col;
|
|
|
|
col = *src++;
|
|
col -= ((((col - col3) * factor) << 1) >> 8) & 0xFF;
|
|
processedPalette[2] = col;
|
|
|
|
*dst++ = findLeastDifferentColor(processedPalette, palette+3, 255)+1;
|
|
}
|
|
|
|
return buffer;
|
|
}
|
|
|
|
void Screen_v2::applyOverlay(int x, int y, int w, int h, int pageNum, const uint8 *overlay) {
|
|
if (pageNum == 0 || pageNum == 1)
|
|
addDirtyRect(x, y, w, h);
|
|
|
|
uint8 *dst = getPagePtr(pageNum) + y * 320 + x;
|
|
while (h--) {
|
|
for (int wi = 0; wi < w; ++wi) {
|
|
uint8 index = *dst;
|
|
*dst++ = overlay[index];
|
|
}
|
|
dst += 320 - w;
|
|
}
|
|
}
|
|
|
|
int Screen_v2::findLeastDifferentColor(const uint8 *paletteEntry, const uint8 *palette, uint16 numColors) {
|
|
int m = 0x7fff;
|
|
int r = 0x101;
|
|
|
|
for (int i = 0; i < numColors; i++) {
|
|
int v = paletteEntry[0] - *palette++;
|
|
int c = v * v;
|
|
v = paletteEntry[1] - *palette++;
|
|
c += (v * v);
|
|
v = paletteEntry[2] - *palette++;
|
|
c += (v * v);
|
|
|
|
if (c <= m) {
|
|
m = c;
|
|
r = i;
|
|
}
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
void Screen_v2::copyWsaRect(int x, int y, int w, int h, int dimState, int plotFunc, const uint8 *src,
|
|
int unk1, const uint8 *unkPtr1, const uint8 *unkPtr2) {
|
|
uint8 *dstPtr = getPagePtr(_curPage);
|
|
uint8 *origDst = dstPtr;
|
|
|
|
const ScreenDim *dim = getScreenDim(dimState);
|
|
int dimX1 = dim->sx << 3;
|
|
int dimX2 = dim->w << 3;
|
|
dimX2 += dimX1;
|
|
|
|
int dimY1 = dim->sy;
|
|
int dimY2 = dim->h;
|
|
dimY2 += dimY1;
|
|
|
|
int temp = y - dimY1;
|
|
if (temp < 0) {
|
|
if ((temp += h) <= 0)
|
|
return;
|
|
else {
|
|
SWAP(temp, h);
|
|
y += temp - h;
|
|
src += (temp - h) * w;
|
|
}
|
|
}
|
|
|
|
temp = dimY2 - y;
|
|
if (temp <= 0)
|
|
return;
|
|
|
|
if (temp < h)
|
|
h = temp;
|
|
|
|
int srcOffset = 0;
|
|
temp = x - dimX1;
|
|
if (temp < 0) {
|
|
temp = -temp;
|
|
srcOffset = temp;
|
|
x += temp;
|
|
w -= temp;
|
|
}
|
|
|
|
int srcAdd = 0;
|
|
|
|
temp = dimX2 - x;
|
|
if (temp <= 0)
|
|
return;
|
|
|
|
if (temp < w) {
|
|
SWAP(w, temp);
|
|
temp -= w;
|
|
srcAdd = temp;
|
|
}
|
|
|
|
dstPtr += y * SCREEN_W + x;
|
|
uint8 *dst = dstPtr;
|
|
|
|
if (_curPage == 0 || _curPage == 1)
|
|
addDirtyRect(x, y, w, h);
|
|
|
|
clearOverlayRect(_curPage, x, y, w, h);
|
|
|
|
temp = h;
|
|
int curY = y;
|
|
while (h--) {
|
|
src += srcOffset;
|
|
++curY;
|
|
int cW = w;
|
|
|
|
switch (plotFunc) {
|
|
case 0:
|
|
memcpy(dst, src, cW);
|
|
dst += cW; src += cW;
|
|
break;
|
|
|
|
case 1:
|
|
while (cW--) {
|
|
uint8 d = *src++;
|
|
uint8 t = unkPtr1[d];
|
|
if (t != 0xFF)
|
|
d = unkPtr2[*dst + (t << 8)];
|
|
*dst++ = d;
|
|
}
|
|
break;
|
|
|
|
case 4:
|
|
while (cW--) {
|
|
uint8 d = *src++;
|
|
if (d)
|
|
*dst = d;
|
|
++dst;
|
|
}
|
|
break;
|
|
|
|
case 5:
|
|
while (cW--) {
|
|
uint8 d = *src++;
|
|
if (d) {
|
|
uint8 t = unkPtr1[d];
|
|
if (t != 0xFF)
|
|
d = unkPtr2[*dst + (t << 8)];
|
|
*dst = d;
|
|
}
|
|
++dst;
|
|
}
|
|
break;
|
|
|
|
case 8:
|
|
case 9:
|
|
while (cW--) {
|
|
uint8 d = *src++;
|
|
uint8 t = _shapePages[0][dst - origDst] & 7;
|
|
if (unk1 < t && (curY > _maskMinY && curY < _maskMaxY))
|
|
d = _shapePages[1][dst - origDst];
|
|
*dst++ = d;
|
|
}
|
|
break;
|
|
|
|
case 12:
|
|
case 13:
|
|
while (cW--) {
|
|
uint8 d = *src++;
|
|
if (d) {
|
|
uint8 t = _shapePages[0][dst - origDst] & 7;
|
|
if (unk1 < t && (curY > _maskMinY && curY < _maskMaxY))
|
|
d = _shapePages[1][dst - origDst];
|
|
*dst++ = d;
|
|
} else {
|
|
d = _shapePages[1][dst - origDst];
|
|
*dst++ = d;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
dst = (dstPtr += SCREEN_W);
|
|
src += srcAdd;
|
|
}
|
|
}
|
|
|
|
const uint8 *Screen_v2::getPtrToShape(const uint8 *shpFile, int shape) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::getPtrToShape(%p, %d)", (const void *)shpFile, shape);
|
|
uint16 shapes = READ_LE_UINT16(shpFile);
|
|
|
|
if (shapes <= shape)
|
|
return 0;
|
|
|
|
uint32 offset = READ_LE_UINT32(shpFile + (shape << 2) + 2);
|
|
|
|
return shpFile + offset + 2;
|
|
}
|
|
|
|
uint8 *Screen_v2::getPtrToShape(uint8 *shpFile, int shape) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::getPtrToShape(%p, %d)", (void *)shpFile, shape);
|
|
uint16 shapes = READ_LE_UINT16(shpFile);
|
|
|
|
if (shapes <= shape)
|
|
return 0;
|
|
|
|
uint32 offset = READ_LE_UINT32(shpFile + (shape << 2) + 2);
|
|
|
|
return shpFile + offset + 2;
|
|
}
|
|
|
|
int Screen_v2::getShapeScaledWidth(const uint8 *shpFile, int scale) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::getShapeScaledWidth(%p, %d)", (const void*)shpFile, scale);
|
|
int width = READ_LE_UINT16(shpFile+3);
|
|
return (width * scale) >> 8;
|
|
}
|
|
|
|
int Screen_v2::getShapeScaledHeight(const uint8 *shpFile, int scale) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::getShapeScaledHeight(%p, %d)", (const void*)shpFile, scale);
|
|
int height = shpFile[2];
|
|
return (height * scale) >> 8;
|
|
}
|
|
|
|
uint16 Screen_v2::getShapeSize(const uint8 *shp) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::getShapeSize(%p)", (const void *)shp);
|
|
|
|
return READ_LE_UINT16(shp+6);
|
|
}
|
|
|
|
uint8 *Screen_v2::makeShapeCopy(const uint8 *src, int index) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::makeShapeCopy(%p, %d)", (const void *)src, index);
|
|
|
|
const uint8 *shape = getPtrToShape(src, index);
|
|
if (!shape)
|
|
return 0;
|
|
|
|
int size = getShapeSize(shape);
|
|
|
|
uint8 *copy = new uint8[size];
|
|
assert(copy);
|
|
memcpy(copy, shape, size);
|
|
|
|
return copy;
|
|
}
|
|
|
|
int Screen_v2::getLayer(int x, int y) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::getLayer(%d, %d)", x, y);
|
|
if (x < 0)
|
|
x = 0;
|
|
else if (x >= 320)
|
|
x = 319;
|
|
if (y < 0)
|
|
y = 0;
|
|
else if (y >= 144)
|
|
y = 143;
|
|
|
|
uint8 pixel = *(getCPagePtr(5) + y * 320 + x);
|
|
pixel &= 0x7F;
|
|
pixel >>= 3;
|
|
|
|
if (pixel < 1)
|
|
pixel = 1;
|
|
else if (pixel > 15)
|
|
pixel = 15;
|
|
return pixel;
|
|
}
|
|
|
|
int Screen_v2::getRectSize(int w, int h) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::getRectSize(%d, %d)", w, h);
|
|
if (w > 320 || h > 200)
|
|
return 0;
|
|
return w*h;
|
|
}
|
|
|
|
void Screen_v2::setTextColorMap(const uint8 *cmap) {
|
|
debugC(9, kDebugLevelScreen, "Screen_v2::setTextColorMap(%p)", (const void *)cmap);
|
|
setTextColor(cmap, 0, 15);
|
|
}
|
|
|
|
void Screen_v2::wsaFrameAnimationStep(int x1, int y1, int x2, int y2,
|
|
int w1, int h1, int w2, int h2, int srcPage, int dstPage, int dim) {
|
|
|
|
if (!(w1 || h1 || w2 || h2))
|
|
return;
|
|
|
|
ScreenDim cdm = *getScreenDim(dim);
|
|
cdm.sx <<= 3;
|
|
cdm.w <<= 3;
|
|
|
|
int na = 0, nb = 0, nc = w2;
|
|
|
|
if (!calcBounds(cdm.w, cdm.h, x2, y2, w2, h2, na, nb, nc))
|
|
return;
|
|
|
|
const uint8 *src = getPagePtr(srcPage) + y1 * 320;
|
|
uint8 *dst = getPagePtr(dstPage) + (y2 + cdm.sy) * 320;
|
|
|
|
int u = -1;
|
|
|
|
do {
|
|
int t = (nb * h1) / h2;
|
|
if (t != u) {
|
|
u = t;
|
|
const uint8 *s = src + (x1 + t) * 320;
|
|
uint8 *dt = (uint8 *)_wsaFrameAnimBuffer;
|
|
|
|
t = w2 - w1;
|
|
if (!t) {
|
|
memcpy(dt, s, w2);
|
|
} else if (t > 0) {
|
|
if (w1 == 1) {
|
|
memset(dt, *s, w2);
|
|
} else {
|
|
t = ((((((w2 - w1 + 1) & 0xffff) << 8) / w1) + 0x100) & 0xffff) << 8;
|
|
int bp = 0;
|
|
for (int i = 0; i < w1; i++) {
|
|
int cnt = (t >> 16);
|
|
bp += (t & 0xffff);
|
|
if (bp > 0xffff) {
|
|
bp -= 0xffff;
|
|
cnt++;
|
|
}
|
|
memset(dt, *s++, cnt);
|
|
dt += cnt;
|
|
}
|
|
}
|
|
} else {
|
|
if (w2 == 1) {
|
|
*dt = *s;
|
|
} else {
|
|
t = (((((w1 - w2) & 0xffff) << 8) / w2) & 0xffff) << 8;
|
|
int bp = 0;
|
|
for (int i = 0; i < w2; i++) {
|
|
*dt++ = *s++;
|
|
bp += (t & 0xffff);
|
|
if (bp > 0xffff) {
|
|
bp -= 0xffff;
|
|
s++;
|
|
}
|
|
s += (t >> 16);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
memcpy(dst + x2 + cdm.sx, _wsaFrameAnimBuffer + na, w2);
|
|
dst += 320;
|
|
} while (++nb < h2);
|
|
}
|
|
|
|
bool Screen_v2::calcBounds(int w0, int h0, int &x1, int &y1, int &w1, int &h1, int &x2, int &y2, int &w2) {
|
|
x2 = 0;
|
|
y2 = 0;
|
|
w2 = w1;
|
|
|
|
int t = x1 + w1;
|
|
if (t < 1) {
|
|
w1 = h1 = -1;
|
|
} else {
|
|
if (t <= x1) {
|
|
x2 = w1 - t;
|
|
w1 = t;
|
|
x1 = 0;
|
|
}
|
|
t = w0 - x1;
|
|
if (t < 1) {
|
|
w1 = h1 = -1;
|
|
} else {
|
|
if (t <= w1) {
|
|
w1 = t;
|
|
}
|
|
w2 -= w1;
|
|
t = h1 + y1;
|
|
if (t < 1) {
|
|
w1 = h1 = -1;
|
|
} else {
|
|
if (t <= y1) {
|
|
y2 = h1 - t;
|
|
h1 = t;
|
|
y1 = 0;
|
|
}
|
|
t = h0 - y1;
|
|
if (t < 1) {
|
|
w1 = h1 = -1;
|
|
} else {
|
|
if (t <= h1) {
|
|
h1 = t;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return (w1 == -1) ? false : true;
|
|
}
|
|
|
|
} // end of namespace Kyra
|
|
|