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84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2003 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "sky/sky.h"
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#include "sky/skydefs.h"
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void SkyState::initTimer(void) {
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_tseqFrames = 0;
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_timer = Engine::_timer;
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_timer->installProcedure(&timerHandler, 1000000 / 50); //call 50 times per second
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}
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void SkyState::timerHandler(void *ptr) {
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SkyState *_this = (SkyState *)ptr;
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//music_command(0x300);
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_this->doTimerSequence();
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}
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void SkyState::startTimerSequence(byte *sequence) {
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_tseqFrames = *sequence++;
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_tseqData = sequence;
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_tseqCounter = SEQUENCE_COUNT;
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debug(5, "Starting new sequence of %d frames.", _tseqFrames);
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}
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void SkyState::doTimerSequence(void) {
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byte nrToSkip, nrToDo, tmp;
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byte *scrPtr = _workScreen;
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if (_tseqFrames == 0)
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return;
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_tseqCounter--;
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if (_tseqCounter != 0)
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return;
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_tseqCounter = SEQUENCE_COUNT;
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do {
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do {
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nrToSkip = *_tseqData++;
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scrPtr += nrToSkip;
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} while (nrToSkip == 255);
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do {
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nrToDo = *_tseqData++;
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tmp = nrToDo;
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while (tmp--) {
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*scrPtr++ = *_tseqData++;
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}
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} while (nrToDo == 255);
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} while ((scrPtr - _workScreen) < (GAME_SCREEN_WIDTH * GAME_SCREEN_HEIGHT));
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showScreen();
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_tseqFrames--;
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}
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