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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 "dreamweb/dreamweb.h"
namespace DreamGen {
uint8 *DreamGenContext::mainPalette() {
return segRef(data.word(kBuffers)).ptr(kMaingamepal, 256*3);
}
uint8 *DreamGenContext::startPalette() {
return segRef(data.word(kBuffers)).ptr(kStartpal, 256*3);
}
uint8 *DreamGenContext::endPalette() {
return segRef(data.word(kBuffers)).ptr(kEndpal, 256*3);
}
void DreamGenContext::clearstartpal() {
memset(startPalette(), 0, 256*3);
}
void DreamGenContext::clearendpal() {
memset(endPalette(), 0, 256*3);
}
void DreamGenContext::paltostartpal() {
memcpy(startPalette(), mainPalette(), 256*3);
}
void DreamGenContext::endpaltostart() {
memcpy(startPalette(), endPalette(), 256*3);
}
void DreamGenContext::startpaltoend() {
memcpy(endPalette(), startPalette(), 256*3);
}
void DreamGenContext::paltoendpal() {
memcpy(endPalette(), mainPalette(), 256*3);
}
void DreamGenContext::fadecalculation() {
if (data.byte(kFadecount) == 0) {
data.byte(kFadedirection) = 0;
return;
}
uint8 *startPal = startPalette();
const uint8 *endPal = endPalette();
for (size_t i = 0; i < 256 * 3; ++i, ++si, ++di) {
uint8 s = startPal[i];
uint8 e = endPal[i];
if (s == e)
continue;
else if (s > e)
--startPal[i];
else {
if (data.byte(kFadecount) <= e)
++startPal[i];
}
}
--data.byte(kFadecount);
}
void DreamGenContext::fadeupyellows() {
paltoendpal();
memset(endPalette() + 231*3, 0, 8*3);
memset(endPalette() + 246*3, 0, 1*3);
data.byte(kFadedirection) = 1;
data.byte(kFadecount) = 63;
data.byte(kColourpos) = 0;
data.byte(kNumtofade) = 128;
hangon(128);
}
void DreamGenContext::fadeupmonfirst() {
paltostartpal();
paltoendpal();
memset(startPalette() + 231*3, 0, 8*3);
memset(startPalette() + 246*3, 0, 1*3);
data.byte(kFadedirection) = 1;
data.byte(kFadecount) = 63;
data.byte(kColourpos) = 0;
data.byte(kNumtofade) = 128;
hangon(64);
playchannel1(26);
hangon(64);
}
} /*namespace dreamgen */
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