[WIP] Rain System - Designed for moving objects

Hello everyone,

I started to make this rain system because i believe it's something that almost every single 3d game needs.

This systems main core is to simulate rain in an area around an object and if the object moves, then the rain will follow the object corretly.

Think of this tool like this:
It's raining everywhere in the world but only the rain inside a radius around the player will be rendered.

The easiest way to show this is to see the following video:

You can see the rain stays in the correct place even if the object is moving fast.
there are some bugs in the video. Not everything is working properly yet, but it's a very nice start.

Here are some images:



If you have any questions please ask, and tell me if this is something you are interested in.

If you also have some suggestions, then share with me and i'll see if i can implement them.


Thanks

Edit 1 :

I just made some optimizations and fixed the "floating" rain problem, the scene now renders at around 600FPS and the performance impact is 1.33ms.
I believe i can improve the performance alot and add many more features.

 

Hello there,

Making a new post to explain better what this system does:
The player is moving at the same velocity in every situation.

Normal Particle System in Global Space

While using a normal particle system in global space, we have the problem that while we move, new particles are being instantiated in a new position and if we move fast, then we will never see those particles (common problem with using particles as rain/snow)
Here's an example:


Normal Particle System in Local Space

While using a normal particle system in local space, we no longer have the problem of not seeing the particles, but the same particles will continue to move in the same place relative to the object ( not realistic ) and if the object moves from the open area to a closed area, then the particles will still move with it until they hit the floor.
Example:


New Rain System designed for fast moving objects

Contrary to both solutions above, this rain system will simulate rain correctly, even at high speeds (cars, planes, etc).
The rain will appear correctly even if the player moves, staying in the same place in global space while not having problems when the player enters a structure.
Example:


I hope i explained this better.
Tell me what you think

 

Hello again!

I made many improvements and made a more practical example video with a car.

Think of this system like this:
It's raining everywhere in the world but only the rain inside a radius around the player will be rendered.

Still lots to do,
Do you have any suggestions?

 

Looks fantastic, any idea about the price range? I could see myself using this if it is within my budget, You guys should put more (like the distractibility system you made, or anything else) stuff on the the asset store.

By the way, I'm a really huge fan of your upcoming No Heroes FPS, I look forward to the new gameplay videos every week.Actually inspired me to make my own Mo-capped Third Person Shooter. I realized it isn't impossible, even for just one guy, to make a AAA quality game. I really wan't an Alpha version of it, whenever the greenlit version gets released.

 

It looks amazing, but there are some things to address.
1:The lack of rain drop effects
2:It looks repeated
3:When moving at high speeds it looks like it is in one spot.
There are more things like refraction of the rain drops and maybe effects on the camera, but not that important. Otherwise this looks amazing.

 

I'm definitely interested in this. Let us know how you intend to distribute the package please.

 

@3
Thanks,
I haven't decided a price yet, but will be relatively cheap ( something like 10$ - 15$ ).

@EpicLilg
1: Rain drops will be also added, this is just the beginning,
2: I will also address that,
3: I'm having a problem that particles are not moving continually, because of that if you move too fast, then the particles will seem weird. I'll also fix that.
I'm going to add many things to try to make it as high quality as i possibly can.

@juliobds
Thanks. I will release this in the asset store.

 

This is really cool, good job man I was wondering, why are you making the rain on the back of the charcter as well as we won't see it ? Good job anyway ! Looking forward to seeing this completely done

 

It looks good!

 

Here's a big update for this tool:

Added:
- Raindrop particles,
- Tunnel effect depending on speed,
- Change number of particles at run-time,
- Turbulence curve and amount value,
- More random trajectory for falling particles,
- Improved performance,
- Average 2 - 2.5 ms

Here's a screenshot in motion:



What do you think?
Interested? Remember, this works at literally ANY speed !

EDIT:

Here's a screenshot using Unity's plane scene:



Note that i haven't made the particles point their faces towards the camera, so there are about 1/3 - 1/2 of the particles that are not being seen.

EDIT 2:
Managed to improve to an average of 1.70ms - 1.90ms. Still can improve the performance alot.

 

New video preview of the Rain System in action:

Tell me what you think

 

That's some good job you've done here, congrats I think the water splashing the floor would need some work though, it's a tad slow Keep it up, looking forward to seeing it finished !

 

This is great. The rain facing the camera is good as you can see all the rain. Also can you alter the radius of the rain being rendered?

 

Oh wow, that's a pretty nifty rain system you got there, seems perfect for handheld devices.
Looking forward to the release !

 

This is really slick. I can see a lot of uses for something like this for adding that missing component of realism to local rain systems. I myself am working on a top-down shooter this would be brilliant for as the player moves among different covered areas quite frequently. Question though: Does the rains behavior work just as well when Time.timeScale has been modified to a low number to simulate slo-motion?

 

So still planning on selling this piece of work ?
Seems perfect for mobile too actually O_O

 

Did you get anywhere on this? I'm intrigued.

 

Fantastic!

 

I put this project on hold sometime ago, along with the update of the Physics to Animation Tool, until i get my game to a functional and stable state. I will return to this when possible.
Thanks for being interested and sorry about the delay.

 

Awesome! i had an idea, set the speed of the rain to the speed of the player, so you could do slow motion effects, set the movement speed and fall speed to 0.1 and also the rain speed to 0.1, therefore giving a slow motion effect.

Keep up the good work!

 

This is exactly what I’m looking for right now, albeit with a snow effect instead of rain. Any chance of an asset store release, or pre-release wip version?

 

Unfortunately i stopped working on this.
I still think this could be a pretty awesome asset, but i don't guarantee that i will be returning back to it