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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "sky/sky.h"
#include "sky/skydefs.h"
void SkyState::initTimer(void) {
_tseqFrames = 0;
_timer = Engine::_timer;
_timer->installProcedure(&timerHandler, 1000000 / 50); //call 50 times per second
}
void SkyState::timerHandler(void *ptr) {
SkyState *_this = (SkyState *)ptr;
//music_command(0x300);
_this->doTimerSequence();
}
void SkyState::startTimerSequence(byte *sequence) {
_tseqFrames = *sequence++;
_tseqData = sequence;
_tseqCounter = SEQUENCE_COUNT;
debug(1, "Starting new sequence of %d frames.", _tseqFrames);
}
void SkyState::doTimerSequence(void) {
byte nrToSkip, nrToDo, tmp;
byte *scrPtr = _workScreen;
if (_tseqFrames == 0)
return;
_tseqCounter--;
if (_tseqCounter != 0)
return;
_tseqCounter = SEQUENCE_COUNT;
debug(2, "Number of frames left: %d\n", _tseqFrames);
do {
do {
nrToSkip = *_tseqData++;
scrPtr += nrToSkip;
} while (nrToSkip == 255);
do {
nrToDo = *_tseqData++;
tmp = nrToDo;
while (tmp--) {
*scrPtr++ = *_tseqData++;
}
} while (nrToDo == 255);
} while ((scrPtr - _workScreen) < (GAME_SCREEN_WIDTH * GAME_SCREEN_HEIGHT));
showScreen();
_tseqFrames--;
}
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