cocos2d-x3.2 game Core loop in application, how to deal with FPS instability

Today the weather is very cloudy, it is going to rain soon, Chen eat early kung fu write something,

A cold autumn rain, 10 of the rain to wear cotton, you will henceforth wear a bit more

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();

//See, in fact all the games are in this loop

while (!glview->windowshouldclose())//If you do not exit, for example, the user presses home and exits.

{

Lasttime = Getcurrentmillsecond(); Get current system time

Director->mainloop(); 1. Working with game graphics and game logic

Glview->pollevents(); 2. Dealing with Game interactions

Curtime = Getcurrentmillsecond(); 3. the above 1.2 must consume a certain amount of time and the more animations and monsters may take a lot of time, so curtime-lasttime is how long this calculation consumes.

if (Curtime-lasttime < _animationinterval) //If Curtime-lasttime < _animationinterval

Description in 60/1 seconds to complete the calculation of this frame and then let the cup sleep fps remaining time to ensure the stability of the frame rate

{

Usleep (static_cast<useconds_t> ((_animationinterval -curtime + lasttime) *1000 ));

}

What if you want to know if there is any instability in the game? Add the following code

Else

{

//........

}

}

Do you understand, dear?

/* Only work on Desktop

* Director::mainloop is really one frame logic

* When we want to close the window, we should call Director::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;

}