mirror of
https://github.com/libretro/scummvm.git
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158 lines
3.3 KiB
C++
158 lines
3.3 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002 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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*
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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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*
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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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#include "stdafx.h"
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#include "scumm.h"
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#include "scummsys.h"
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#include "timer.h"
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static Scumm * scumm;
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Timer::Timer(Scumm * parent) {
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_initialized = false;
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_timerRunning = false;
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scumm = _scumm = parent;
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}
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Timer::~Timer() {
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release ();
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}
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static int timer_handler (int t)
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{
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scumm->_timer->handler (&t);
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return t;
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}
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int Timer::handler(int * t) {
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uint32 interval, l;
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if (_timerRunning) {
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_lastTime = _thisTime;
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_thisTime = _osystem->get_msecs();
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interval = _thisTime - _lastTime;
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for (l = 0; l < MAX_TIMERS; l++) {
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if ((_timerSlots[l].procedure) && (_timerSlots[l].interval > 0)) {
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_timerSlots[l].counter -= interval;
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if (_timerSlots[l].counter <= 0) {
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_timerSlots[l].counter += _timerSlots[l].interval;
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_timerSlots[l].procedure (_scumm);
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}
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}
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}
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}
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return *t;
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}
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bool Timer::init() {
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int32 l;
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_osystem = _scumm->_system;
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if (_osystem == NULL) {
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printf("Timer: OSystem not initialized !\n");
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return false;
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}
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if (_initialized == true)
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return true;
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for (l = 0; l < MAX_TIMERS; l++) {
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_timerSlots[l].procedure = NULL;
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_timerSlots[l].interval = 0;
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_timerSlots[l].counter = 0;
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}
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_thisTime = _osystem->get_msecs();
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_osystem->set_timer (10, &timer_handler);
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_timerRunning = true;
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_initialized = true;
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return true;
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}
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void Timer::release() {
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int32 l;
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if (_initialized == false)
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return;
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_timerRunning = false;
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_osystem->set_timer (0, NULL);
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_initialized = false;
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for (l = 0; l < MAX_TIMERS; l++) {
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_timerSlots[l].procedure = NULL;
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_timerSlots[l].interval = 0;
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_timerSlots[l].counter = 0;
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}
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}
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bool Timer::installProcedure (TimerProc procedure, int32 interval) {
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int32 l;
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bool found = false;
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if (_initialized == false) {
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printf ("Timer: is not initialized !");
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return false;
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}
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_timerRunning = false;
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for (l = 0; l < MAX_TIMERS; l++) {
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if (!_timerSlots[l].procedure) {
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_timerSlots[l].procedure = procedure;
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_timerSlots[l].interval = interval;
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_timerSlots[l].counter = interval;
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found = true;
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break;
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}
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}
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_timerRunning = true;
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if (!found) {
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printf ("Can't find free slot !");
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return false;
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}
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return true;
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}
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void Timer::releaseProcedure (TimerProc procedure) {
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int32 l;
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if (_initialized == false) {
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printf ("Timer: is not initialized !");
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return;
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}
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_timerRunning = false;
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for (l = 0; l < MAX_TIMERS; l++) {
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if (_timerSlots[l].procedure == procedure) {
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_timerSlots[l].procedure = 0;
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_timerSlots[l].interval = 0;
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_timerSlots[l].counter = 0;
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}
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}
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_timerRunning = true;
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}
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