sdlmm_timer.cpp Source File

00001 /*
00002  * SDLmm - a C++ wrapper for SDL and related libraries
00003  * Copyright © 2001 David Hedbor <david@hedbor.org>
00004  * 
00005  * This program is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU General Public License as
00007  * published by the Free Software Foundation; either version 2 of the
00008  * License, or (at your option) any later version.
00009  * 
00010  * This program is distributed in the hope that it will be useful, but
00011  * WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * General Public License for more details.
00014  * 
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program; if not, write to the Free Software
00017  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018  *
00019  */
00020 
00021 #include "sdlmm_config.h"
00022 
00023 #include <SDL.h>
00024 #include "sdlmm_timer.h"
00025 // Timer class
00026 
00027 namespace SDLmm {
00028   bool Timer::Init() {
00029     Uint32 wasinit = SDL_WasInit(SDL_INIT_EVERYTHING);
00030     if(!wasinit) {
00031       return SDL_Init(SDL_INIT_TIMER) == 0;
00032     } else if(!(wasinit & SDL_INIT_TIMER)) {
00033       return SDL_InitSubSystem(SDL_INIT_TIMER) == 0;
00034     }
00035     return true;
00036   }
00037 
00038   void Timer::Quit() {
00039     if(SDL_WasInit(SDL_INIT_TIMER)) {
00040       SDL_QuitSubSystem(SDL_INIT_TIMER);
00041     }
00042   }
00043 
00044   Timer::Ticks Timer::GetTicks() {
00045     return SDL_GetTicks();
00046   }
00047 
00048   void Timer::Mark() {
00049     Ticks NewTick = GetTicks();
00050     m_Elapsed = NewTick - m_Tick;
00051     m_Tick = NewTick;
00052   }
00053 
00054 
00055 }
00056   
00057