Nebula2探秘04-Time Server研究

Nebula2探秘04-Time Server研究

happykevins文

/* ************************************************************************** */
/* Nebula2-Tutorial04 */
/* 使用TimeServer */
/* author:happykevins */
/* ************************************************************************** */

/// ----------------------------------------------------------------------------
/// +必要头文件
#include " kernel/nkernelserver.h "
#include " kernel/ntimeserver.h "
/// -必要头文件
/// ----------------------------------------------------------------------------

/// ----------------------------------------------------------------------------
/// +链接库
#pragma comment(lib,"wsock32.lib")
#pragma comment(lib,"d_nkernel.lib")
/// -链接库
/// ----------------------------------------------------------------------------

/// ----------------------------------------------------------------------------
/// +Application
int main( int argc, const char ** argv)
{
/// 创建KernelServer
nKernelServer * ks = n_new(nKernelServer);

/// 获得TimeServer
nTimeServer * time = (nTimeServer * )ks -> Lookup( " /sys/servers/time " );
double totaltime = 0 ;
double frametime = 0 ;

/// ----------------------------------------------------------------------------
/// +默认情况
ks -> Print( " *****StartTimer!***** " );
time -> ResetTime();
time -> StartTime();
while (totaltime < 0.5f )
{
time -> Trigger();
frametime = time -> GetTime() - totaltime;
totaltime += frametime;
ks -> Print( " [FRAME:%f] " ,frametime);
}
time -> StopTime();
ks -> Print( " [TOTAL:%f] " ,totaltime);
ks -> Print( " *****StopTimer!***** " );
/// +默认情况
/// ----------------------------------------------------------------------------

/// ----------------------------------------------------------------------------
/// +设置WaitDelta
/// @note:
/// 在WaitDeltaT <0.001时几乎没有什么作用
/// 在WaitDeltaT>=0.001时每一帧的间隔时间会远远大于0.001
time -> WaitDeltaT( 0.001f );
ks -> Print( " [WAIT:%fsec] " ,time -> GetWaitDeltaT());
ks -> Print( " *****StartTimer(WaitDeltaT)!***** " );
time -> StartTime();
while (totaltime < 2.0f )
{
time -> Trigger();
frametime = time -> GetTime() - totaltime;
totaltime += frametime;
ks -> Print( " [FRAME:%f] " ,frametime);
}
time -> StopTime();
ks -> Print( " [TOTAL:%f] " ,totaltime);
ks -> Print( " *****StopTimer(WaitDeltaT)!***** " );
/// -设置WaitDelta
/// ----------------------------------------------------------------------------

/// ----------------------------------------------------------------------------
/// +设置LockDelta
/// @note:
/// LockDeltaT的用途是锁定帧速率
/// 在LockDeltaT>0时，每一帧将不会按照真实时间来更新
time -> LockDeltaT( 0.1 );
ks -> Print( " [LOCK:%fsec] " ,time -> GetLockDeltaT());
ks -> Print( " *****StartTimer(LockDeltaT)!***** " );
time -> StartTime();
while (totaltime < 4.0f )
{
time -> Trigger();
frametime = time -> GetTime() - totaltime;
totaltime += frametime;
ks -> Print( " [FRAME:%f] " ,frametime);
}
time -> StopTime();
ks -> Print( " [TOTAL:%f] " ,totaltime);
ks -> Print( " *****StopTimer(LockDeltaT)!***** " );
/// +设置LockDelta
/// ----------------------------------------------------------------------------

/// 销毁KernelServer
n_delete(ks);

getchar();
return 0 ;
}
/// -Application
/// ----------------------------------------------------------------------------