Uni Bullet Hell - 2D bullet hell's shot pattern system

Hi @WestHill,
Thanks for the asset.

I'm encountering a small problem and was wondering if you could help.
I have a small function on an enemy where after a specific time, it uses the StartShotRoutine(0f) to shoot a pattern.
So far, so good, however the second time the StartShotRoutine() is called the enemy shoots nothing, but on the third time it's back to shoot.
I do have a coroutine to ensure the StopShotRoutine() function is called between two StartShotRoutine().
Changing the time between the first and the second doesn't appear to change anything.
I imagine I'm missing something super obvious but I can't seem to find what.
Could you please help me there?

Many thanks in advance.

 

@DunkelBor
I'd like to check the problem.
Could you please send me a minimal project?

 

Hello @WestHill

I have an issue trying to get the value of m_shotList.Item.m_afterDelay from UbhShotCtrl, i get zero and "ArgumentException: method arguments are incompatible".

 

@Oshigawa
Make sure that m_shotList is not NULL or empty before getting the list members.

like this

Code (CSharp):

1. if (m_shotList != null && m_shotList.Count >= 0)
2. {
3.     // do some thing...
4. }

 

Hi @WestHill,
I'll prepare this and send it to you, thanks.

 

Well it's not null, After Delay value is pre-set in the prefab, yet i get an error and 0 as a result. I'll get a bit deeper into it to see what is the problem.

 

Hi again @WestHill,
On the minimal version of the project the problem didn't appear so it is clearly somewhere on my side, I'll look into it.
Thanks again.

 

Hi again @WestHill,
I'm having a small problem.
With a clean import of UBH I receive one error:


The problem in the script being the following:


Any idea on how to fix it in a clean way?
I know that commenting it out works for UBH but this creates conflict with another important package so I'd rather find a sustainable solution.

Many thanks in advance.

 

@DunkelBor
OK, I'll check it out.
What version of Unity are you using?

 

Hi @WestHill
I'm using Unity 2020.3.15f2.

 

@DunkelBor
I'm not getting that error.
Do you have anything else installed in your project besides UBH?

 

Hi @WestHill,

Problem solved it came from my script Action which I simply had to rename.
Sorry for the trouble and thanks again for the help.

 

Hello @WestHill

Any chance of supporting pool kit in the near future?

https://assetstore.unity.com/packag...-the-ultimate-pooling-system-for-unity-121174

 

@Oshigawa
We do not plan to link it with any other assets.

 

Hello @WestHill

Ok, thanks.

By the way, i'm having issues all of a sudden. Bullets started spawning in UbhObjectPool instead under Pool Boss. Pool Boss is properly initialized, #define is in enabled in UbhObjectPool.

Clones are created under PoolBoss but they are not being activated but instead created in UbhObjectPool.

Any ideas what to look for?

 

@Oshigawa
Is #define the only change in UbhObjectPool?
Or has there been an update to PoolBoss recently?

 

@WestHill

Yes, define is the only change. PoolBoss hasn't been updated recently as far as i know. It started happening all of a sudden.

I'll try reimporting both assets.

edit: reimported both, still the same.

edit 2: wait, is this the normal behaviour:

This one is inactive and under pool boss:



This one is active and parented to UbhObjectPool:



When it's released, it's reparented to Pool Boss.

I noticed this because i have a null ref exception when the bullets are reused. When they are spawned for the first time, i get parentShot.name from UbhBullet successfully, but when the bullet is reused and i try to get it i get a null reference.

 

@Oshigawa
Changing the parent of the bullet when using it is the intended behavior in the first release.
If it doesn't work well with the current version of PoolBoss, it needs to be fixed.
I'll check it later.

 

All good, i had a race condition so i added a small delay until ubhbullet component is added to the bullet.

 

Hi @WestHill
In UBH_ShotShowcase, I have change LinearShot Bullet Speed from 2 to 20.
The bullets sometimes go through player without trigger collision. (I have disabled player damage)
Even set EnemyBulletParent Rigidbody Collision Detection to Continuous but with no luck.
Is there anyway to fix this?

 

Hi @chihchanglin
UBH includes the pattern of the bullets, but hit detection is not a supported feature.
The sample uses the simplest standard Unity functionality. It is only a sample.
If you want to improve it, there are ways, such as using raycast to do hit checks with fast moving bullets.

 

Hi @WestHill
Where's the best place I can put my own raycast to do hit checks also movement?
I need more detail about it. Thanks.

 

@chihchanglin
There is no best. It depends on the project.
Besides raycasting, for simple 2D shapes, it is sometimes faster to do the calculations yourself.
I wish you the best of luck with your project.

 

Hi @WestHill,

Thanks for the asset, I've chosen to use it for my current project.

I've done some tests and it seems that the behavior of the example patterns change when the game runs at different FPS.

Example with spiral pattern running at ~30 FPS


And now the same pattern running at ~300FPS


I have done something wrong in the setup? Is there a way of fixing this? I need the behavior of bullet patterns to be the same across different FPS values.

Thank you!

Edit: Just checked and this also happens in the shot showcase example scene.

 

Hi @OliverL2112

I'll check it out.

 

@WestHill

I'm sending you an email since I want to show some parts of your code and I think this forum is public.

 

I have been able to reproduce the problem.
I will update the asset soon.
Thanks! @OliverL2112

 

Hi @WestHill

is there a way to get the instance of a fired bullet?

I added a property to UbhBullet i want to pass, so when the bullet is fired, i can pass the property to UbhBullet via callback, but i don't know how to access it.

 

@Oshigawa
I will add callback events in the next update.

 

@Oshigawa
A new version of UBH has just been released.

The following parameters have been added to each shot classes.

If "Use Bullet Fired Callback" is set to True (check ON) and a callback function is added to "Bullet Fired Callback Events," the function will be called with the fired bullet as an argument.

If you do not use this function, set "Use Bullet Fired Callback" to False.

 

Hi
My unity level is very newbie
How can I play the pattern of the m_shotList I want?

I want to play the pattern according to the enemyHp.

for example
if( enemyHp >50 && enemyHp < 100)
{
// pattern A
// ubhShotCtrl.StartShotRoutine();
}
else
{
// pattern B
}

So, i write ubhShotCtrl.StartShotRoutine();
But this way, all the patterns were played back and forth

 

@wkzpfm2
There are several ways to do this.

ex1: replace the shot list

Code (CSharp):

1. if (enemyHp > 50 && enemyHp < 100)
2. {
3.     // pattern A
4.     ubhShotCtrl.StopShotRoutine();
5.  
6.     ubhShotCtrl.m_shotList.Clear();
7.     ubhShotCtrl.m_shotList.Add(shotA);
8.     ubhShotCtrl.m_shotList.Add(shotB);
9.  
10.     ubhShotCtrl.StartShotRoutine();
11. }
12. else
13. {
14.     // pattern B
15.     ubhShotCtrl.StopShotRoutine();
16.  
17.     ubhShotCtrl.m_shotList.Clear();
18.     ubhShotCtrl.m_shotList.Add(shotC);
19.     ubhShotCtrl.m_shotList.Add(shotD);
20.  
21.     ubhShotCtrl.StartShotRoutine();
22. }

ex2: use multiple shotctrl component

Code (CSharp):

1. if (enemyHp > 50 && enemyHp < 100)
2. {
3.     // pattern A
4.     ubhShotCtrl_B.StopShotRoutine();
5.     ubhShotCtrl_A.StartShotRoutine();
6. }
7. else
8. {
9.     // pattern B
10.     ubhShotCtrl_A.StopShotRoutine();
11.     ubhShotCtrl_B.StartShotRoutine();
12. }

 

Thank you very much!!

 

You're the boss. I need this to set bullet properties on runtime so i can pool less bullets and reduce overhead. Very handy callback.

 

Hi, i added "shot controller" component and have some error
And DemoScene have same problem

NullReferenceException: Object reference not set to an instance of an object
UbhShotCtrl.OnEnable ()

The error assign here

 

@wkzpfm2
Try deleting the asset completely and re-importing it.
If this does not improve, please send the project to me.

 

I think it was a problem with the unity Editor
I deleted uni bullet hell asset and imported it again, but it was the same, so I made a new project and moved everything I worked on, so it was solved. Thank you

 

@WestHill

Hi, can you give me a hand here, i can't seem to manage it myself, i didn't use UnityEvents much.

I have a GameObject that holds ShotController and a type of shot (RandomShot, for example). I have a script attached that will apply modifications to fired bullet when bullet fired callback calls the method jn the attached script. Of course, i need to access the gameobject that holds the UbhBullet component. However, i just can't seem how to get the UbhBullet component from the callback.

I see m_useBulletFiredCallback sends UbhBullet bullet parameter, so i tried something like this in my script that is called via callback:

Code (CSharp):

1. public void ApplyBulletSettings(UbhBullet bullet)
2.  
3.     {
4.         ubhBullet = bullet.GetComponent<UbhBullet>();
5.     }
6.  

Now the inspector demands from me to attach the UbhBullet parameter of course, but i can't put it by dropping it from the RandomShot.

RandomShot inherits UbhBaseShot that defines UbhBullet, i thought that would work, but the inspector says no and i get this on runtime:

ArgumentException: Object of type 'UnityEngine.Object' cannot be converted to type 'UbhBullet'.

In short, BulletFiredCallback event passes the UbhBullet parameter, but i can't seem to get it from the script that is on the same gameobject as the shot preset.

 

@Oshigawa
I have made a video on how to receive callbacks.
See it here.

Also, the UbhBullet passed as an argument is an UbhBullet, so it can be used as is (no need for GetComponent).

 

Hello @WestHill

All good, i didn't know there's two ways of using a callback, one with defined passed parameter in inspector, and one "blind".

 

@Oshigawa
It makes sense that UnityEvents has two ways.
StaticParameter allows you to set arguments from the Editor's Inspector.
DynamicParameter is passed arguments at runtime.

 

Makes sense, learned something new. Thanks again.

 

Hi, I've searched the thread but can't found it, is anybody tried to implement a basic player path prediction to this asset ? I'm not good at vector math. A simple not targeting the player but target the players next position related to players speed, direction and distance to bullet caster should be enough.

Problem is this asset's bullet casting system uses only angles. Sorry, if this is simple vector math calculation but currently I'm lost.

 

hi im new to posting on unity. unihell is great im able to have it shoot almost instantly. But how to have when a bullet hits my biker player it restarts level? does anyone know? thanks

 

@zartan917
It's not about UBH Asset, it's the basics of Unity, the minimum code required is to reload the scene on hit events.

If you want to try this with the UBH sample scenes, rewrite the contents of the Damage method of the UbhPlayer class to this.

Code (CSharp):

1. SceneManager.LoadScene(SceneManager.GetActiveScene());

 

thank you