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This question was closed Mar 17, 2018 at 01:28 PM by uriyeah55 for the following reason:

The question is answered, right answer was accepted

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Question by uriyeah55 · Mar 14, 2018 at 02:39 AM · raycastingstate machine

Raycasting with Finite State Machine?

I still can't figure how dumb is the question, but that's why I'm asking here.

In my game the player has a forward raycast which recognizes the name of the object that collides with. In a previous similar game I wrote a lot of "if" conditions (if the hit name is this, do this, if the hit name is that, do that) like a lot of times. My question is: referring to the coding level does this suck for the computer? Could a State Machine provide brighter results? I didn't have any hard problem with frame rates and stuff, but I'm wondering which is the "more efficient" way. Thanks for your time!

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Answer by exzizt · Mar 14, 2018 at 02:48 AM

If you are doing different logic for each possible object "name", there's only a slightly cleaner/more efficient way to do this, and that is to use a switch statement instead of an if statement since switch statements are compiled to jump tables at runtime.

E.g.:

 string objectName = gameObject.name;
 
 // Will perform every check until it finds your object name (slower).
 if (objectName == "foo")
 {
 }
 else if (objectName == "bar")
 {
 }
 
 // Will jump immediatley to your object name (faster!).
 switch (objectName)
 {
     case "foo":
         break;
     case "bar":
         break;
 }


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Answer by uriyeah55 · Mar 14, 2018 at 12:37 PM

Thanks a lot! Do you think is worth using this method of the "if" collection should be fine anyway? :)

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avatar image exzizt · Mar 14, 2018 at 09:38 PM 1
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It's up to you whether or not you want to use this $$anonymous$$or optimization or not. :)

avatar image uriyeah55 exzizt · Mar 17, 2018 at 01:11 AM 0
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I'm so glad for your help ^^ $$anonymous$$y last question is about "clean coding". Which method would you consider more professional?

avatar image exzizt uriyeah55 · Mar 17, 2018 at 01:36 AM 0
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You're welcome. :) They are both equally "professional" in my opinion. I would go with the switch statement, personally.

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