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