Nebula2探秘04-Time Server研究

Nebula2探秘04-Time Server研究

happykevins文

/****************************************************************************/

/* Nebula2 - Tutorial 04 */

/* 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("*****Start Timer!***** ");

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("*****Stop Timer!***** ");

/// +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("*****Start Timer(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("*****Stop Timer(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("*****Start Timer(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("*****Stop Timer(LockDeltaT)!***** ");

/// +设置LockDelta

///----------------------------------------------------------------------------

/// 销毁KernelServer

n_delete(ks);

getchar();

return 0;

}

/// -Application

///----------------------------------------------------------------------------