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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004 The ScummVM project
*
* The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
*
* 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 "reinherit.h"
#include "timer.h"
// FIXME: replace calls to this with direct OSystem calls
namespace Saga {
struct R_SYSTIMER {
int t_running;
unsigned long t_interval;
void *t_param;
};
struct R_SYSTIMER_DATA {
int initialized;
uint32 t_start_ticks;
uint32 t_current_ticks;
uint32 t_previous_ticks;
};
static R_SYSTIMER_DATA R_TimerData;
int SYSTIMER_InitMSCounter() {
if (R_TimerData.initialized) {
return R_FAILURE;
}
R_TimerData.t_previous_ticks = g_system->get_msecs();
R_TimerData.initialized = 1;
return R_SUCCESS;
}
unsigned long SYSTIMER_ReadMSCounter() {
uint32 ms_elapsed = 0;
if (!R_TimerData.initialized) {
return 0;
}
R_TimerData.t_current_ticks = g_system->get_msecs();
if (R_TimerData.t_current_ticks < R_TimerData.t_previous_ticks) {
// Timer has rolled over after 49 days
} else {
ms_elapsed = R_TimerData.t_current_ticks - R_TimerData.t_previous_ticks;
R_TimerData.t_previous_ticks = R_TimerData.t_current_ticks;
}
return ms_elapsed;
}
int SYSTIMER_ResetMSCounter() {
if (!R_TimerData.initialized) {
return R_FAILURE;
}
R_TimerData.t_previous_ticks = g_system->get_msecs();
return R_SUCCESS;
}
int SYSTIMER_Sleep(uint16 msec) {
g_system->delay_msecs(msec);
return R_SUCCESS;
}
} // End of namespace Saga
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