74 lines
1.4 KiB
C++
74 lines
1.4 KiB
C++
#include "..\e2dbase.h"
|
|
#include "..\e2dtool.h"
|
|
#include "..\e2dmanager.h"
|
|
#include <thread>
|
|
|
|
using namespace std::chrono;
|
|
|
|
|
|
// 游戏开始时间
|
|
steady_clock::time_point e2d::Time::_start;
|
|
// 当前时间
|
|
steady_clock::time_point e2d::Time::_now;
|
|
// 上一帧刷新时间
|
|
steady_clock::time_point e2d::Time::_last;
|
|
// 固定的刷新时间
|
|
steady_clock::time_point e2d::Time::_fixedLast;
|
|
// 每一帧间隔
|
|
milliseconds e2d::Time::_interval;
|
|
|
|
|
|
double e2d::Time::getTotalTime()
|
|
{
|
|
return duration_cast<microseconds>(_now - _start).count() / 1000.0 / 1000.0;
|
|
}
|
|
|
|
double e2d::Time::getDeltaTime()
|
|
{
|
|
return duration_cast<microseconds>(_now - _last).count() / 1000.0 / 1000.0;
|
|
}
|
|
|
|
bool e2d::Time::__init()
|
|
{
|
|
_start = _fixedLast = _last = _now = steady_clock::now();
|
|
_interval = milliseconds(15);
|
|
return true;
|
|
}
|
|
|
|
bool e2d::Time::__isReady()
|
|
{
|
|
return _interval < duration_cast<milliseconds>(_now - _fixedLast);
|
|
}
|
|
|
|
void e2d::Time::__updateNow()
|
|
{
|
|
_now = steady_clock::now();
|
|
}
|
|
|
|
void e2d::Time::__updateLast()
|
|
{
|
|
_fixedLast += _interval;
|
|
|
|
_last = _now;
|
|
_now = steady_clock::now();
|
|
}
|
|
|
|
void e2d::Time::__reset()
|
|
{
|
|
_last = _fixedLast = _now = steady_clock::now();
|
|
Timer::getInstance()->updateTime();
|
|
ActionManager::getInstance()->updateTime();
|
|
}
|
|
|
|
void e2d::Time::__sleep()
|
|
{
|
|
// 计算挂起时长
|
|
int nWaitMS = 16 - static_cast<int>(duration_cast<milliseconds>(_now - _fixedLast).count());
|
|
|
|
if (nWaitMS > 1)
|
|
{
|
|
// 挂起线程，释放 CPU 占用
|
|
std::this_thread::sleep_for(milliseconds(nWaitMS));
|
|
}
|
|
}
|