Instantiation and Deletion of objects each frame for laser

Question

Hello, I'm quite new at Unity and have have decided to make an actual 2D game with a good base (unlike my other projects where I copied or improvised on the go). I'm trying to make a laser gun type weapon in it which bounces off of mirrors. However, I've realized that if i want the laser to have different properties on the reflection (duplication of laser, different type of laser damage on bounce, etc) I'll need to instantiate a new laser game object on bounce, shoot it, delete it each frame, and recalculate it again. I don't know if this is a good implementation, and from what I understand, instantiating and deleting all laser sections (with their according line renderers) will cause the performance to tank. I've read about pooling objects, but I do not know how many lasers will bounce on screen each shot. Is the solution really deleting and creating them each frame, or is there something else i could do to shoot/draw them? Many thanks.

Answer 1

Best Answer

Answer by tormentoarmagedoom · Jul 27 at 11:29 AM

Hello.

There is no problem on Instantiate and delete objects, what iI dont see is why you want to instantiate and delete it every frame, i supose you want the player to see the laser light going through the scene, so it needs some time on the scene.

If you want to do it "instantly", you should do Raycasting, not instantiate a gameobject and delete it. If you dont know what raycasts are, go look for tutorials, they are very usefull for what you are looking for,

https://docs.unity3d.com/ScriptReference/Physics.Raycast.html

Bye!

Add comment · Show 5 · Share

stud701 · Jul 27 at 12:08 PM 0

Share

Hey! So yes, I do want my laser to be instant. Originally I used one LineRenderer to render the laser at once based on the ray cast collisions. However, I do want to change what the laser does depending on the type of mirror (think fire mirror or anything of the sort) and how the laser looks after. Because of that, I need another Laser which would be shot by the first one on collision with the mirror. And from what I can think that would require another line renderer which leads to the gameObject instantiation and destruction which I was talking about. Thanks for the response :).

stud701 stud701 · Jul 27 at 04:49 PM 0

Share

To add to this, I need to find away to split lasers on mirror hit, and for each one i would need a new line renderer, so this leads me to believe there is no other way (maybe a procedural mesh?).

tormentoarmagedoom stud701 · Jul 27 at 05:19 PM 0

Share

If want laser to split, just cast more raycasts to calculate where the lasers will hit

Show more comments

Instantiation and Deletion of objects each frame for laser

1 Reply

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions