Got it working. Need to play with it some more but here are my thoughts from now:

1. Spawning bullets along a line is problematic.  I set the spawn dir to "directional" and set the "num sides" to 2 to simulate  a line. But radius expands the line/edge length(bigger polygon) and the offset from the center of the bullet manager(since it spawns along edges). This results in appropriate behavior for a polygonal shape but not for a line. So there should be someway to specify a line shape separately.
2.  Would appreciate a gizmo preview for the shape when the bullet manager is selected. Kind of hard to visualize otherwise.  The above issue with spawning on a line took longer to understand because of that.
3.   The bullet controller is sufficient for jam needs but most people may want to add their own bullet controllers. 
4. Rendering the bullets without using gameobjects is a good, performant approach.  I haven't run into performance issues(yet) in my plain ol' pooled bullet setup but this'd surely save a lot of time when I need that many bullets on screen. I would totally buy this if I could integrate just the rendering and collision features with my own bullet movement controller. 

What if we don't want to use the asset because I want to use unity 2019 or 2018

I am not able to spawn bullets even after setting everything as mentioned in documentation and at this webpage ? Also,why max active bullets is always zero, even if max bullets is not zero ? Please help me.

Hi there I followed the instructions and made sure that the bullet material is correct but the bullets

are not showing in the demo scene

not sure what I am doing wrong

Thanks for the BulletFury demo project!  It looks pretty promising and I was able to get it working on Unity 2020.3.33 URP.

One request... Can you update the dll compile directory so the plugin doesn't break if you move the BulletFury folder into a sub-directory?  (error message below)  I like keeping my project folders organized and it's a pet peeve when assets completely break if you simply move them to a sub-directory.

`error CS0006: Metadata file '/Users/B/.../_Game_Jams/BulletHell22/Assets/BulletFury/BulletFury/Plugins/BulletFury.dll' could not be found`

I can get the package to work, but I can't see the bullets.  I only see explosions.  

Thanks for this great assets, it’s awesome.

I have a bug to submit (we are 2 developpers with similar problems)

It’s hard to reproduce because it happens not everytime and not in the same way, but when I have multiple BulletManager, and when I call Spawn() every Update frame, one of emitter is not spawning bullets. (not a problem of views, apparently the bullet doesn’t spawn at all) They are exactly the same object, and Spawn function called the same way but I have only 3 of my 4 bulletManager working.

Have you got some idea ? (apparently, I have the same problem, when I call the spawn method not from an update unty callback.

Sorry, it’s difficult to send you a small project to reproduce that, but you can DM me to get more details.

Appreciate your answer, because I’m kind of stuck in my gamedev with this bug ;) Thanks in advance

I noticed that the explosions part of BulletFury (BulletExplodeOnHit.cs) is very heavy on FPS (100 FPS without explosions, only 25 FPS with explosions in the demo).

Looking at the code, I see that new explosion GameObjects are being instantiated on every collision.  Unity instantiation is famously slow, so I'd recommend using object pooling in order to reuse a large amount of the explosion prefabs and avoid the Instantiation slowdowns. Should speed things up by 2x-3x I would guess.

Coroutines are also somewhat slow, so that could be sped up by using a timer on the explosion prefab, or even better using the new Async Await.  But the biggest performance gains will come from object pooling here.

Just wanted to give everyone else a heads up in case they're looking for ways to improve performance.

Hi, I'm struggling to get more than one bullet manager working at a time. I want to have one for the player and one for enemies, etc. The spawn and bullet settings are currently both identical for each manager, and bullets work if both the player and enemies use the same manager, but as soon as I switch out the manager on the player, bullets don't spawn.

Thanks so much for sharing this! Super helpful in the jam.

I'd like to sync the bullet fire rate to my music. I have custom cues triggering from my music atm, but is there a way to hijack the fire rate in the spawn settings? I have 8 different music cue types and would to set a spawn pattern to each type of cue. While ensuring the bullets fire in time with my cues.
Any recommendations on how to do that?
Thanks!