mirror of
https://github.com/coderkei/akmenu-next.git
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a7dd6151a4
- UTF8-ify where possible - Remove custom linkerscript - Update Makefiles - devkitPro/nds-examples@6afa09b205 - Comment out akloader binaries - This will be reworked soon™️ - Eradicate sdidentify - AKRPG specific - Eradicate libelm - Eradicate save64m - Eradicate file operations - Eradicate libio* - Eradicate crtsmall - Fix paths for new root drive naming in latest libfat - dsrom: fix type cast issue in homebrew check - MAX_FILENAME_LENGTH -> PATH_MAX - adapt directory listing operations to new dkP way - timer: unstaticify _factor - Remove all flashcart-specific bits - fix type of cPopMenu::itemBelowPoint - gbaloader: use updated vramSetPrimaryBanks function - Move arm9-specific headers to arm9
92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
/*
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timer.cpp
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Copyright (C) 2007 Acekard, www.acekard.com
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Copyright (C) 2007-2009 somebody
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Copyright (C) 2009 yellow wood goblin
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(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, see <http://www.gnu.org/licenses/>.
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*/
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#include "timer.h"
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vu64 cTimer::_overFlow = 0;
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cTimer::cTimer()
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{
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//initTimer();
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}
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void cTimer::timerInterruptHandler()
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{
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_overFlow += 65536;
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}
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void cTimer::initTimer()
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{
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_lastTime = 0;
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_currentTime = 0;
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_overFlow = 0;
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_fps = 0.f;
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_fpsCounter = 0;
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irqEnable( IRQ_TIMER0 );
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irqSet( IRQ_TIMER0, cTimer::timerInterruptHandler );
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TIMER0_DATA = 0; // set reload value
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TIMER0_CR = TIMER_ENABLE | TIMER_DIV_1 | TIMER_IRQ_REQ;
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}
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double cTimer::updateTimer()
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{
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_currentTime = (_overFlow + TIMER0_DATA) * _factor;
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return _currentTime;
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}
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double cTimer::updateFps()
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{
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if( _fpsCounter++ > 60 )
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{
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double elapsedTime = _currentTime - _lastTime;
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_fps = _fpsCounter / elapsedTime;
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_fpsCounter = 0;
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_lastTime = _currentTime;
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}
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return _fps;
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}
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double cTimer::getTime()
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{
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return _currentTime;
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}
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vu64 cTimer::getTick()
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{
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irqDisable( IRQ_TIMER0 );
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DC_FlushAll();
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static vu64 lastTick = 0;
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vu64 tick = _overFlow + TIMER0_DATA;
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if( tick < lastTick )
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tick += 65536;// 有时候 TIMER0_DATA 已经归0，但overflow 还没有加上，这个时候需要加上65536
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lastTick = tick;
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irqEnable( IRQ_TIMER0 );
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return tick;
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}
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double cTimer::tickToUs( u64 tick )
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{
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return tick * 1.f/(33.514*1000000.f) * 1000 * 1000;
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}
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double cTimer::getFps()
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{
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return _fps;
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}
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