Does if() inside update() decrease performance?

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Hello. I know that update() runs every frame, but is there a significant decrease in performance when an if() statement runs inside an update as well?

For example, if I have a boolean that controls whether the player can move and shoot:

 function Update() {
     if(canMoveNShoot) {
         WASD = moving;
         Click&Clack = shooting;
     }
 }

Is this the right way of enabling/disabling stuff, or is there another, better way?

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Answer by Eric5h5 · Oct 17, 2014 at 01:09 AM

All code that runs decreases performance to some degree or other, but a single boolean check is trivial compared to the cost of the Update function call itself. It would be better not to call Update at all if you don't need it, so you can disable the script instead, which causes Update and similar functions to stop running, but all other functions will still work (OnCollisionEnter etc. etc.).

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Kiwasi · Oct 17, 2014 at 01:29 AM 0

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As indicated a single bool check is trivial. $$anonymous$$ultiple bool checks can make your code difficult to read.

If you are after a way to eli$$anonymous$$ate frequent if checks you can investigate delegates and events. In some cases this will make your code read better.

Does if() inside update() decrease performance?

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