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ACCESS: Implement fading routines

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Paul Gilbert 2014-08-02 10:07:54 -04:00
parent 857f94423f
commit a94bf197ef
9 changed files with 195 additions and 7 deletions
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100
engines/access/screen.cpp Normal file
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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.
*
*/
#include "common/algorithm.h"
#include "common/textconsole.h"
#include "common/system.h"
#include "graphics/palette.h"
#include "access/screen.h"
#include "access/resources.h"
namespace Access {
Screen::Screen(AccessEngine *vm) : _vm(vm) {
create(320, 200, Graphics::PixelFormat::createFormatCLUT8());
Common::fill(&_tempPalette[0], &_tempPalette[PALETTE_SIZE], 0);
}
void Screen::setDisplayScan() {
warning("TODO: setDisplayScan");
}
void Screen::updateScreen() {
g_system->updateScreen();
}
void Screen::setInitialPalettte() {
Common::copy(&INITIAL_PALETTE[0], &INITIAL_PALETTE[18 * 3], _rawPalette);
Common::fill(&_rawPalette[18 * 3], &_rawPalette[PALETTE_SIZE], 0);
g_system->getPaletteManager()->setPalette(INITIAL_PALETTE, 0, 18);
}
void Screen::updatePalette() {
g_system->getPaletteManager()->setPalette(&_tempPalette[0], 0, PALETTE_COUNT);
updateScreen();
}
void Screen::forceFadeOut() {
const int FADE_AMOUNT = 2;
bool repeatFlag;
byte *srcP;
int count;
do {
repeatFlag = false;
for (srcP = &_tempPalette[0], count = 0; count < PALETTE_COUNT; ++count, ++srcP) {
int v = *srcP;
if (v) {
repeatFlag = true;
*srcP = MAX(*srcP - FADE_AMOUNT, 0);
}
}
updatePalette();
g_system->delayMillis(10);
} while (repeatFlag);
}
void Screen::forceFadeIn() {
Common::fill(&_tempPalette[0], &_tempPalette[PALETTE_SIZE], 0);
const int FADE_AMOUNT = 2;
bool repeatFlag;
do {
repeatFlag = false;
const byte *srcP = &_rawPalette[0];
byte *destP = &_tempPalette[0];
for (int idx = 0; idx < PALETTE_SIZE; ++idx, ++srcP, ++destP) {
if (*destP != *srcP) {
repeatFlag = true;
*destP = MAX((int)*destP + FADE_AMOUNT, (int)*srcP);
}
}
updatePalette();
g_system->delayMillis(10);
} while (repeatFlag);
}
} // End of namespace Access