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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.
*
* $URL$
* $Id$
*
*/
#include "common/timer.h"
#include "common/util.h"
#include "sci/sci.h"
#include "sci/engine/state.h"
#include "sci/graphics/screen.h"
#include "sci/graphics/palette.h"
namespace Sci {
SciPalette::SciPalette(ResourceManager *resMan, Screen *screen, bool autoSetPalette)
: _resMan(resMan), _screen(screen) {
int16 color;
_sysPalette.timestamp = 0;
for (color = 0; color < 256; color++) {
_sysPalette.colors[color].used = 0;
_sysPalette.colors[color].r = 0;
_sysPalette.colors[color].g = 0;
_sysPalette.colors[color].b = 0;
_sysPalette.intensity[color] = 100;
_sysPalette.mapping[color] = color;
}
// Black and white are hardcoded
_sysPalette.colors[0].used = 1;
_sysPalette.colors[255].used = 1;
_sysPalette.colors[255].r = 255;
_sysPalette.colors[255].g = 255;
_sysPalette.colors[255].b = 255;
memset(&_amigaEGAtable, 0, sizeof(_amigaEGAtable));
if (autoSetPalette) {
if (_resMan->getViewType() == kViewEga)
setEGA();
else if (_resMan->getViewType() == kViewAmiga)
setAmiga();
else
setFromResource(999, 2);
}
}
SciPalette::~SciPalette() {
}
#define SCI_PAL_FORMAT_CONSTANT 1
#define SCI_PAL_FORMAT_VARIABLE 0
void SciPalette::createFromData(byte *data, Palette *paletteOut) {
int palFormat = 0;
int palOffset = 0;
int palColorStart = 0;
int palColorCount = 0;
int colorNo = 0;
memset(paletteOut, 0, sizeof(Palette));
// Setup default mapping
for (colorNo = 0; colorNo < 256; colorNo++) {
paletteOut->mapping[colorNo] = colorNo;
}
if ((data[0] == 0 && data[1] == 1) || (data[0] == 0 && data[1] == 0 && READ_LE_UINT16(data + 29) == 0)) {
// SCI0/SCI1 palette
palFormat = SCI_PAL_FORMAT_VARIABLE; // CONSTANT;
palOffset = 260;
palColorStart = 0; palColorCount = 256;
//memcpy(&paletteOut->mapping, data, 256);
} else {
// SCI1.1 palette
palFormat = data[32];
palOffset = 37;
palColorStart = READ_LE_UINT16(data + 25); palColorCount = READ_LE_UINT16(data + 29);
}
switch (palFormat) {
case SCI_PAL_FORMAT_CONSTANT:
for (colorNo = palColorStart; colorNo < palColorStart + palColorCount; colorNo++) {
paletteOut->colors[colorNo].used = 1;
paletteOut->colors[colorNo].r = data[palOffset++];
paletteOut->colors[colorNo].g = data[palOffset++];
paletteOut->colors[colorNo].b = data[palOffset++];
}
break;
case SCI_PAL_FORMAT_VARIABLE:
for (colorNo = palColorStart; colorNo < palColorStart + palColorCount; colorNo++) {
paletteOut->colors[colorNo].used = data[palOffset++];
paletteOut->colors[colorNo].r = data[palOffset++];
paletteOut->colors[colorNo].g = data[palOffset++];
paletteOut->colors[colorNo].b = data[palOffset++];
}
break;
}
}
static const byte EGApalette[16][3] = {
{ 0x000, 0x000, 0x000 },
{ 0x000, 0x000, 0x0AA },
{ 0x000, 0x0AA, 0x000 },
{ 0x000, 0x0AA, 0x0AA },
{ 0x0AA, 0x000, 0x000 },
{ 0x0AA, 0x000, 0x0AA },
{ 0x0AA, 0x055, 0x000 },
{ 0x0AA, 0x0AA, 0x0AA },
{ 0x055, 0x055, 0x055 },
{ 0x055, 0x055, 0x0FF },
{ 0x055, 0x0FF, 0x055 },
{ 0x055, 0x0FF, 0x0FF },
{ 0x0FF, 0x055, 0x055 },
{ 0x0FF, 0x055, 0x0FF },
{ 0x0FF, 0x0FF, 0x055 },
{ 0x0FF, 0x0FF, 0x0FF }
};
// Will try to set amiga palette by using "spal" file. If not found, we return false
bool SciPalette::setAmiga() {
Common::File file;
int curColor, byte1, byte2;
if (file.open("spal")) {
for (curColor = 0; curColor < 32; curColor++) {
byte1 = file.readByte();
byte2 = file.readByte();
if ((byte1 == EOF) || (byte2 == EOF))
error("Amiga palette file ends prematurely");
_sysPalette.colors[curColor].used = 1;
_sysPalette.colors[curColor].r = (byte1 & 0x0F) * 0x11;
_sysPalette.colors[curColor].g = ((byte2 & 0xF0) >> 4) * 0x11;
_sysPalette.colors[curColor].b = (byte2 & 0x0F) * 0x11;
}
file.close();
// Directly set the palette, because setOnScreen() wont do a thing for amiga
_screen->setPalette(&_sysPalette);
// Create EGA to amiga table
for (curColor = 1; curColor < 16; curColor++) {
_amigaEGAtable[curColor] = matchColor(&_sysPalette, EGApalette[curColor][0], EGApalette[curColor][1], EGApalette[curColor][2]);
}
return true;
}
return false;
}
// On amiga the scripts send us an EGA color, we need to match it to the active amiga palette
int16 SciPalette::mapAmigaColor(int16 color) {
// TODO: not sure what pq3 means by using color 31
if (color > 15)
return color;
return _amigaEGAtable[color];
}
// Called from picture class, some amiga sci1 games set half of the palette
void SciPalette::modifyAmigaPalette(byte *data) {
int16 curColor, curPos = 0;
byte byte1, byte2;
for (curColor = 0; curColor < 16; curColor++) {
byte1 = data[curPos++];
byte2 = data[curPos++];
_sysPalette.colors[curColor].r = (byte1 & 0x0F) * 0x11;
_sysPalette.colors[curColor].g = ((byte2 & 0xF0) >> 4) * 0x11;
_sysPalette.colors[curColor].b = (byte2 & 0x0F) * 0x11;
}
_screen->setPalette(&_sysPalette);
// TODO: when games do this it seems the EGAmapping isnt used anymore, at least the colors are wrong in any case
}
void SciPalette::setEGA() {
int curColor;
byte color1, color2;
for (curColor = 0; curColor <= 15; curColor++) {
_sysPalette.colors[curColor].used = 1;
_sysPalette.colors[curColor].r = EGApalette[curColor][0];
_sysPalette.colors[curColor].g = EGApalette[curColor][1];
_sysPalette.colors[curColor].b = EGApalette[curColor][2];
}
// Now setting colors 16-254 to the correct mix colors that occur when not doing a dithering run on
// finished pictures
for (curColor = 0x10; curColor <= 0xFE; curColor++) {
_sysPalette.colors[curColor].used = curColor;
color1 = curColor & 0x0F; color2 = curColor >> 4;
_sysPalette.colors[curColor].r = (_sysPalette.colors[color1].r >> 1) + (_sysPalette.colors[color2].r >> 1);
_sysPalette.colors[curColor].g = (_sysPalette.colors[color1].g >> 1) + (_sysPalette.colors[color2].g >> 1);
_sysPalette.colors[curColor].b = (_sysPalette.colors[color1].b >> 1) + (_sysPalette.colors[color2].b >> 1);
}
setOnScreen();
}
bool SciPalette::setFromResource(GuiResourceId resourceId, uint16 flag) {
Resource *palResource = _resMan->findResource(ResourceId(kResourceTypePalette, resourceId), 0);
Palette palette;
if (palResource) {
createFromData(palResource->data, &palette);
set(&palette, 2);
return true;
}
return false;
}
void SciPalette::set(Palette *sciPal, uint16 flag) {
uint32 systime = _sysPalette.timestamp;
if (flag == 2 || sciPal->timestamp != systime) {
merge(sciPal, &_sysPalette, flag);
sciPal->timestamp = _sysPalette.timestamp;
if (_screen->_picNotValid == 0 && systime != _sysPalette.timestamp)
setOnScreen();
}
}
void SciPalette::merge(Palette *pFrom, Palette *pTo, uint16 flag) {
uint16 res;
int i,j;
// colors 0 (black) and 255 (white) are not affected by merging
for (i = 1 ; i < 255; i++) {
if (!pFrom->colors[i].used)// color is not used - so skip it
continue;
// forced palette merging or dest color is not used yet or bit 1 of new color is set
if (flag == 2 || (!pTo->colors[i].used) || (pFrom->colors[i].used & 2)) {
pTo->colors[i].used = pFrom->colors[i].used;
pTo->colors[i].r = pFrom->colors[i].r;
pTo->colors[i].g = pFrom->colors[i].g;
pTo->colors[i].b = pFrom->colors[i].b;
pFrom->mapping[i] = i;
continue;
}
// is the same color already at the same position? -> match it directly w/o lookup
// this fixes games like lsl1demo/sq5 where the same rgb color exists multiple times and where we would
// otherwise match the wrong one (which would result into the pixels affected (or not) by palette changes)
if ((pTo->colors[i].r == pFrom->colors[i].r) && (pTo->colors[i].g == pFrom->colors[i].g) && (pTo->colors[i].b == pFrom->colors[i].b)) {
pFrom->mapping[i] = i;
continue;
}
// check if exact color could be matched
res = matchColor(pTo, pFrom->colors[i].r, pFrom->colors[i].g, pFrom->colors[i].b);
if (res & 0x8000) { // exact match was found
pFrom->mapping[i] = res & 0xFF;
continue;
}
// no exact match - see if there is an unused color
for (j = 1; j < 256; j++)
if (!pTo->colors[j].used) {
pTo->colors[j].used = pFrom->colors[i].used;
pTo->colors[j].r = pFrom->colors[i].r;
pTo->colors[j].g = pFrom->colors[i].g;
pTo->colors[j].b = pFrom->colors[i].b;
pFrom->mapping[i] = j;
break;
}
// if still no luck - set an approximate color
if (j == 256) {
pFrom->mapping[i] = res & 0xFF;
pTo->colors[res & 0xFF].used |= 0x10;
}
}
pTo->timestamp = g_system->getMillis() * 60 / 1000;
}
uint16 SciPalette::matchColor(Palette *pPal, byte r, byte g, byte b) {
byte found = 0xFF;
int diff = 0x2FFFF, cdiff;
int16 dr,dg,db;
for (int i = 1; i < 255; i++) {
if ((!pPal->colors[i].used))
continue;
dr = pPal->colors[i].r - r;
dg = pPal->colors[i].g - g;
db = pPal->colors[i].b - b;
// minimum squares match
cdiff = (dr*dr) + (dg*dg) + (db*db);
// minimum sum match (Sierra's)
// cdiff = ABS(dr) + ABS(dg) + ABS(db);
if (cdiff < diff) {
if (cdiff == 0)
return i | 0x8000; // setting this flag to indicate exact match
found = i;
diff = cdiff;
}
}
return found;
}
void SciPalette::getSys(Palette *pal) {
if (pal != &_sysPalette)
memcpy(pal, &_sysPalette,sizeof(Palette));
}
void SciPalette::setOnScreen() {
// if (pal != &_sysPalette)
// memcpy(&_sysPalette,pal,sizeof(Palette));
// We dont change palette at all times for amiga
if (_resMan->getViewType() == kViewAmiga)
return;
_screen->setPalette(&_sysPalette);
}
void SciPalette::setFlag(uint16 fromColor, uint16 toColor, uint16 flag) {
uint16 colorNr;
for (colorNr = fromColor; colorNr < toColor; colorNr++) {
_sysPalette.colors[colorNr].used |= flag;
}
}
void SciPalette::unsetFlag(uint16 fromColor, uint16 toColor, uint16 flag) {
uint16 colorNr;
for (colorNr = fromColor; colorNr < toColor; colorNr++) {
_sysPalette.colors[colorNr].used &= ~flag;
}
}
void SciPalette::setIntensity(uint16 fromColor, uint16 toColor, uint16 intensity, bool setPalette) {
memset(&_sysPalette.intensity[0] + fromColor, intensity, toColor - fromColor);
if (setPalette)
setOnScreen();
}
// Returns true, if palette got changed
bool SciPalette::animate(byte fromColor, byte toColor, int speed) {
Color col;
//byte colorNr;
int16 colorCount;
uint32 now = g_system->getMillis() * 60 / 1000;
// search for sheduled animations with the same 'from' value
// schedule animation...
int scheduleCount = _schedules.size();
int scheduleNr;
for (scheduleNr = 0; scheduleNr < scheduleCount; scheduleNr++) {
if (_schedules[scheduleNr].from == fromColor)
break;
}
if (scheduleNr == scheduleCount) {
// adding a new schedule
PalSchedule newSchedule;
newSchedule.from = fromColor;
newSchedule.schedule = now + ABS(speed);
_schedules.push_back(newSchedule);
scheduleCount++;
}
for (scheduleNr = 0; scheduleNr < scheduleCount; scheduleNr++) {
if (_schedules[scheduleNr].from == fromColor) {
if (_schedules[scheduleNr].schedule <= now) {
if (speed > 0) {
// TODO: Not really sure about this, sierra sci seems to do exactly this here
col = _sysPalette.colors[fromColor];
if (fromColor < toColor) {
colorCount = toColor - fromColor - 1;
memmove(&_sysPalette.colors[fromColor], &_sysPalette.colors[fromColor + 1], colorCount * sizeof(Color));
}
_sysPalette.colors[toColor - 1] = col;
} else {
col = _sysPalette.colors[toColor - 1];
if (fromColor < toColor) {
colorCount = toColor - fromColor - 1;
memmove(&_sysPalette.colors[fromColor + 1], &_sysPalette.colors[fromColor], colorCount * sizeof(Color));
}
_sysPalette.colors[fromColor] = col;
}
// removing schedule
_schedules[scheduleNr].schedule = now + ABS(speed);
// TODO: Not sure when sierra actually removes a schedule
//_schedules.remove_at(scheduleNr);
return true;
}
return false;
}
}
return false;
}
// palVary
// init - only does, if palVaryOn == false
// target, start, new palette allocation
// palVaryOn = true
// palDirection = 1
// palStop = 64
// palTime = from caller
// copy resource palette to target
// init target palette (used = 1 on all colors, color 0 = RGB 0, 0, 0 color 255 = RGB 0xFF, 0xFF, 0xFF
// copy sysPalette to startPalette
// init new palette like target palette
// palPercent = 1
// do various things
// return 1
// deinit - unloads target palette, kills timer hook, disables palVaryOn
// pause - counts up or down, if counter != 0 -> signal wont get counted up by timer
// will only count down to 0
//
// Restarting game
// palVary = false
// palPercent = 0
// call palVary deinit
//
// Saving/restoring
// need to save start and target-palette, when palVaryOn = true
} // End of namespace Sci
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