145 lines
2.4 KiB
C++
145 lines
2.4 KiB
C++
#include "cTiming.hpp"
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/*** Custom Header Files ***/
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#include "../UtilityEngine/cUtility.hpp"
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using TimingEngine::cTiming;
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using UtilityEngine::cUtility;
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/*static*/ cTiming* cTiming::sp_inst = nullptr;
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cTiming::cTiming( const unsigned long int ftp /*= 30*/ )
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: m_ftp(ftp), m_rate(1000 / ftp), m_nextTime(0), m_start(SDL_GetTicks()), m_lastTime(0.0f), m_frameTime(0.0f)
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{
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Setup();
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}
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cTiming::~cTiming()
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{
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CleanUp();
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}
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cTiming& cTiming::operator = ( const cTiming& copy )
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{
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if (this != ©)
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setFTP(copy.getFTP());
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return *this;
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}
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/// Functions
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/*static*/ cTiming& cTiming::Inst()
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{
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if (sp_inst == nullptr)
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sp_inst = new cTiming();
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return *sp_inst;
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}
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/*static*/ void cTiming::Delete()
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{
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delete sp_inst;
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sp_inst = nullptr;
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}
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const bool cTiming::Initialize() const
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{
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bool rtn = IsInit();
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if (rtn == false) {
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if( SDL_Init( SDL_INIT_TIMER ) == 0 ) {
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cUtility::Inst().Message("Timer Initialized.");
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rtn = true;
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} else
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cUtility::Inst().Message("Could not initialize timer. SDL_Init(SDL_INIT_TIMER):", __AT__, cUtility::eTypeSDL::SDL);
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}
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return rtn;
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}
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void cTiming::Setup()
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{
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m_nextTime = SDL_GetTicks();
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AddTimeandRate();
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}
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void cTiming::CleanUp()
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{}
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void cTiming::Time()
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{
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SDL_Delay(TimeLeft());
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AddTimeandRate();
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m_frameTime = FrameTime();
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//m_start = SDL_GetTicks();
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}
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const float/*unsigned long int*/ cTiming::FrameTime()
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{
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/*unsigned long int rtn = 0;
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unsigned long int end = SDL_GetTicks();
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rtn = end - m_start;
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m_start = end;
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return rtn;*/
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/* for keeping track of timing */
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unsigned long int thisTime = SDL_GetTicks();
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m_lastTime = (float)thisTime - 30;
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thisTime = SDL_GetTicks();
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return (float)(thisTime - m_lastTime) / m_ftp;
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}
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/// Sets
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void cTiming::setFTP( const unsigned long int ftp /*= 30*/ )
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{
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m_ftp = ftp;
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m_rate = 1000 / m_ftp;
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Setup();
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}
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/// Gets
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const unsigned long int cTiming::getFTP() const
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{
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return m_ftp;
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}
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const bool cTiming::IsInit() const
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{
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bool rtn = false;
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if (SDL_WasInit(SDL_INIT_TIMER) != 0) {
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cUtility::Inst().Message("Timer is initialized");
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rtn = true;
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} else
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cUtility::Inst().Message("Timer is not initialized.");
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return rtn;
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}
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const float cTiming::getFrameTime() const
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{
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return m_frameTime;
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}
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/// private
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/// Functions
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const unsigned long int cTiming::TimeLeft()
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{
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unsigned long int now = SDL_GetTicks();
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if(m_nextTime <= now)
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return 0;
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else
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return m_nextTime - now;
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}
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void cTiming::AddTimeandRate()
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{
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m_nextTime += m_rate;
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}
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