Cocos2d-x3.2 game core loop in Application, how to deal with FPS instability

Cocos2d-x3.2 game core loop in Application, how to deal with FPS instability

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Int Application: run ()

{

If (! ApplicationDidFinishLaunching ())

{

Return 1;

}

Long lastTime = 0L;

Long curTime = 0L;

Auto director = Director: getInstance ();

Auto glview = director-> getOpenGLView ();

// Retain glview to avoid glview being released in the while loop

Glview-> retain ();

// Have you seen it? In fact, all the games are in this loop.

While (! Glview-> windowShouldClose () // if it is not exited, for example, if the user presses home, it exits.

{

LastTime = getCurrentMillSecond (); // gets the current system time

Director-> mainLoop (); // 1. Process game graphics and game logic

Glview-> pollEvents (); // 2. Process game Interaction

CurTime = getCurrentMillSecond (); // 3. The above 1.2 must consume a certain amount of time and the more animations and monsters it may takeCurTime-lastTime is the time consumed by this calculation.

If (curTime-lastTime <_ animationInterval) // ifCurTime-lastTime <_ animationInterval

// This indicates that the frame calculation is completed within 60/1 seconds and the rest of the cup sleep FPS is used to ensure the stability of the frame rate.

{

Usleep (static_cast (_ AnimationInterval-curTime + lastTime) * 1000 ));

}

//// // If you want to know whether the game is unstable? Add the following code:

Else

{

//........

}

}

//// // Do you understand

/* Only work on Desktop

* Director: mainLoop is really one frame logic

* When we want to close the window, we shocould call ctor: end ();

* Then call Director: mainLoop to do release of internal resources

*/

If (glview-> isOpenGLReady ())

{

Director-> end ();

Director-> mainLoop ();

}

Glview-> release ();

Return 0;

}

Void Application: setAnimationInterval (double interval)

{

_ AnimationInterval = interval * 1000.0f;

}