C++ Question How to loop a warning light?

[fausto]

I created an animation that switch on a warning light when the Fuel Mass is below a critical value.. i want this animation to repeat until the fuel mass is critical.. i suppose i have to create a loop by using "while"..

while(FuelkMass<=35)
{
RevertMasterAlarm();
}

..but i have a CTD..
I wrote these lines in clbkprestep..
any suggestion?

 

[Moach]

well, my friend, seems you've bought yourself an infinite loop...

if you use "while" your code will loop unyieldingly at that position - stopping orbiter from doing other things - things such as, well... altering your fuel level - which as you have set it, seems to be the only way out of your loop....


hence, an impossible situation - the infinite loop...


that function is already being called once every frame - remove the while block and you should see your light blink REALLY fast...

then consider the fact that it's blinking once per frame... that's about 60 times per second (provided you got enough computer to make that FPS)

either way - you should still think about slowing it down, so i suggest something like this:

static int blinkTimer = 0; // static means this number will be preserved between function calls (sets to zero only once)
blinkTimer += simdt; // add delta-time to your timer
if(FuelkMass<=35 && blinkTimer > 500) // 500 ms (blinks on and off every second)
{
     RevertMasterAlarm(); // toggle your lamp
     blinkTimer = 0; // reset timer
}

see if that helps :thumbup:

 

[RisingFury]

It's interesting that you got a CTD in this case, assuming RevertMasterAlarm() has no errors.

I had an infinite loop somewhere when I was rewriting the instruction queue for the OBSP autopilot and my Orbiter just froze...

 

[jthill]

Would putting a vessel beacon inside the cockpit work?

 

[fausto]

Thank you for your quick reply!
still not working.. take in account that RevertMasterAlarm() is an animation sequence, which translate a button down and up 2 times!

 

[Urwumpe]

still not working.. take in account that RevertMasterAlarm() is an animation sequence, which translate a button down and up 2 times!

Then calculate the state of the animation in PostStep as function of the simulation time or the real system time. For example as sinus or sawtooth function.