Maximum number of rays?

Hello, what you people think is maximum number of rays that i could use in 2D game to keep it still playable.

I curently using around 400 rays in update (yes a lot), and with my cpu intel core i5 3.2Ghz skylake (quite old) i hold it easily around 150fps.
Is it mean that i can use them when it is stable? or is it bad idea?

 

Definitely one of those piece of string.Length() questions.

• find your minimum CPU requirement for your game
• if it runs at your minimum required framerate you win
• else use less rays or optimise

This is the sort of useless (I mean that factually, not intending to offend) question I see a lot of. It's so vague, so pointless because everything you are doing consumes CPU, from drawing to input, to AI and so on. Raycasts also use CPU. Do you see where I am going? It is utterly impossible for us to answer your question, especially since how much raycast costs you in millisecs depends on how it is used, why it will be used, if it is sliced, uses threaded API and so on... it could be that the game is better having a lot more CPU spent on raycasts so you optimise other things. And so on.

So in future you have to make these judgement calls, it's actually one of your jobs - and to help you, once you know your targets, get used to the profiler. If it becomes a problem then it's time to optimise

 

Yea you have aboslutly true, but my question is it ok to thinking about it like, i looking on profiler, its stable over 100fps then even though its 2D game its ok? Or how can i know what is ok and what not, what if i have the fastest cpu that i can buy then how i can optipalize this game when i can easily calculate a lot of things at once?

 

How would I know if it's OK?

 

yea thats my qeustion too ,like if its stable on my pc then i can say its optimalized or i need to take this game and trying it on many different PCs? I dont have much experiences with how to correctly optimalized game.