How many raycast can be running in a scene without it being considered too many?(Solved)

Question

Simple scene... player object, a few obstacles and an enemy using raycast to detect/attack the player - All good.

Next scene... player object, a few obstacles and maybe as many as 52 enemies all using the same raycast method to detect/attack the player.

Is this going to be over-taxing on my game/resources

???

Answer 1

Best Answer

Answer by fafase · Mar 29, 2015 at 12:52 PM

Should not since Raycast is just multiplication and division of a few values.

The real question is do you need casting each frame? Could you maybe make them less frequent like only 4 times per second (already a cast each 25ms which sounds enough).

 private float freq = 0.25f; // 4Hz
 void Update(){
    timer +=time.deltaTime;
    if(timer> freq){
        timer = 0;
        AIMethod();
    }
 }

Add comment · Show 4 · Share

Digital-Phantom · Mar 29, 2015 at 01:23 PM 0

Share

Was already thinking something the same. I was going to try a do it using random range, but your suggestion looks more efficient.

I'll give it a go implementing your script.

Thanks

:)

TokyoWarfareProject · Aug 27, 2018 at 04:25 PM 0

Share

Would InvokeRepeating be an alternative?

fafase TokyoWarfareProject · Aug 29, 2018 at 08:48 AM 0

Share

Yes it could be.

Owen-Reynolds · Aug 27, 2018 at 04:57 PM 0

Share

Well, depending on the scene, a raycast could be hundreds of lines. For example, if it's checking for the same layer as those 52 enemies and passes by lots of them, and they use Mesh colliders (it checks the bounding box first, but if it passes close by, it has to check the mesh, too).

How many raycast can be running in a scene without it being considered too many?(Solved)

1 Reply

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions