Dynamic Water Physics 2 [Released]

That sounds like a good method with the lib folder. I'll have to look into that.

 

I don't fully understand the asmdef yet, but it seems that the problem comes from RAM scripts referencing AwesomeTechnologies Vegetation Studio Pro, which I am using, and shooting errors. from Ram spline and lake:
Editor\LakePolygonEditor.cs(11,7): error CS0246: The type or namespace name 'AwesomeTechnologies' could not be found (are you missing a using directive or an assembly reference?)

AwesomeTechnologies uses asmdef, should I add a asmref somewhere to connect these?
Sorry for my ignorance in these asm functions.

 

Yes, just add the AwesomeTechnologies asmdef under RAM asmdef references and that should do it. I assumed that the error was in relation to DWP2, my bad.
Also, this might help: Unity - Manual: Assembly definitions (unity3d.com)

 

thanks!
I'll give it a shot.
I found a note on their Discord that said to remove the namespace from Project Settings, Player- I had to do it a few times, but it seems to work now. Now another asset is having the same reference errors to AwesomeTechnologies.

Good point is that I have no errors from DWP2 now. Once I clear the other errors I can test again. Keeping my fingers crossed.

 

You called it! Thank you!!!
I added the AwesomeTchnoligies.VegetationStudioPro.Runtime.as.def to the RAM.asmdef and it removed the errors.
I guess it was because RAM did not use the asmdef before I added it for DWP2.
Now I can finally test.
Thanks again and I'll let you know how it turns out.

 

I have a boat working with DWP2 in my project.
Next will be adding more boats and cars. I appreciate your help in getting this working. No problem with DWP2 and RAM working together now. Thank you!

 

Glad you got it working

 

Dynamic Water Physics 2 is getting a sail controller:

 

v2.13

03/05/2023

• Cleaned up and commented out the sailing code. Added custom editors for all the sailing scripts.
• Rework of the Submarine and Sink components. Both are now just VariableCenterOfMass MassAffectors, meaning they act as variable weight/ballast attached to the ship.
• Transform position of the Sink component itself now determines the center of mass offset point / point of water ingress.
• Submarine depth input now changes the relative depth instead of setting the absolute depth value. This means that negative input means deeper, positive input means shallower.

 

I would like to enter the boat and then activate the boat, and to switch back to first person, have the player return to inside the boat, but it keeps putting me out into the water instead of inside the boat.
For instance, drive out to a spot on a lake, change to first person and do some fishing, without jumping into the water.
Can this be done and what setting do I need to change?

 

This should be quite easy to achieve. Check the "Character-based ..." section here: Vehicle Changer [NWH Vehicle Physics 2 Documentation]

But essentially the enter/exit point is fully adjustable. It seems that yours is off to the side of the boat or is not set up.
Ignore the NVP2 title of the link, this code is shared between all the NWH assets.

 

Thanks I'll go through it.
I have the enter/exit point located right behind and above the steering wheel and reduced to .02, but I get kicked to the side. I will read through it and set it up again, I must have something incorrect in my settings.

 

I can check if the point is working fine, although so far there have been no complaints about it. Since you mention that you get kicked, I would check if the immediate position after exiting is actually at the enter/exit point and you get kicked to the side because of a collision between your character and the boat. The enter/exit point does not check for any overlaps, etc.

 

Good point. Thanks.

 

Quick question: is there a limit to the number of vehicles in the world? I am creating a very large open world with rivers and roads and want to have vehicles placed throughout.

 

Another question: I've noticed that my boats do not steer when the engine is not throttled up. Is there a way to steer while coasting?
The situation is using a small outboard motorboat and trying to steer it to a dock while coasting and slowing down, but as soon as I throttle down I lose all control and the boat returns to going straight like there is not rudder.
I want to bring in the sailboat as well and I know that sailboats are only controlled with rudder, so it should be possible (I would think)

 

Of course it is possible. Check the demo ships and how they are set up. If you do not have any control when throttle is off most likely cause is that the rudder is missing a WaterObject. Rudder functions like any other WaterObject, and can be oversized if needed by using an invisible dummy mesh (again, check how it is done on e.g. Racer in the demo). That said, at near 0 velocity rudder can not steer a ship (except if not using propeller wash which here is not simulated, but I do not think that is your issue).

 

NWH Vehicle Physics 2 and Dynamic Water Physics 2 are currently both 50% off as a part of the Unity Spring Sale!

 

Perfect- I’ll check the rudder settings

 

The rudder is just rotating a Transform, it does not check what is attached to it. You can also make your own rudder by just placing a scaled thin cube. In fact, that is the recommended way to do things like keels, stabilizers, etc. that might be missing from the model or are not adequately sized.

 

v2.14

11/05/2023

• Added SailPresets to SailController for better adjustability. These replace the previous lift and drag coefficients and the fixed force calculation.
• Tab now toggles the demo UI.

 

How do I control how long the boat will coast without power. I can't find it in the manual.
The rudder is fixed thanks to your help, but the boat stops pretty quick and I would like it to coast longer after throttling down, if possible.
Sorry for all the questions - I printed the manuals and have been testing settings, loving the results so far.

 

The unfortunate downside of this approach to boat physics is that there is not a simple glider to do something like this, as the simulation is done on a triangle level. So reducing the slam and suction forces is pretty much the only way to go.
That, or faking it by adding a bit of the forward force while the ship is moving.
Since this is already a second question about this in a relatively short time, I will see what I can come up with.

 

v2.16

19/05/2023

• Fixed intermittent NaN error caused by WaterObject.
• Fixed SailController lift force direction, introduced in 2.15.

 

I think I found a bug. I only used one WaterDataProvider instance in my scene that I positioned way above the ground but every time my boat exits the corresponding trigger area it keeps floating in the air at the same height.

I currently fixed it myself with the following code in line 579 of the WaterObject.cs:

Code (csharp):

1.  
2. public void OnExitWaterDataProvider(WaterDataProvider wdp)
3. {
4.     availableWaterDataProviders.Remove(wdp);
5.  
6.     // BEGIN FIX
7.     CurrentWaterDataProvider = null;
8.     for (var i = 0; i < vertexCount; ++i)
9.     {
10.         WaterHeights[i] = defaultWaterHeight;
11.         WaterNormals[i] = defaultWaterNormal;
12.         WaterFlows[i]   = defaultWaterFlow;
13.     }
14.     // END FIX
15. }
16.  

 

v2.18

29/05/2023

• [VariableCenterOfMass] Fixed null issue when the GameObject is disabled.
• [Vehicle] onActiveVehicleChanged now passes previous and current vehicles as params.
• [WaterObject] Fixed the issue where when there are no WaterDataProviders active the WaterObject would remember the data from the last WaterDataProvider, instead of falling back to default.

Thanks @BrightBit for reporting the last one, although I did change the solution to the issue up a little bit.

 

hi, me again.

I'm having a bit of a problem with water mask.
what am I doing wrong, the renderqueues are correct, right?
this is lux water. the ocean's rq number is 2999.


also did you use something else for water height calculation for lux water?
the included utility seems like correct 60-70% of the time
(like mentioned here, but my ocean is not scaled)

Code (CSharp):

1. public Material luxOcean;
2. private LuxWaterUtils.GersterWavesDescription Description;
3.     public float TimeOffset = 0.0f;
4.     public Transform T;
5.     public Vector3 pos;
6.     public bool getHeight;
7.     public Vector3 offset;
8.  
9.     void Start()
10.     {
11.         LuxWaterUtils.GetGersterWavesDescription(ref Description, luxOcean);
12.     }
13.     void Update()
14.     {
15.  
16.     if (getHeight) {
17.             pos = T.position;
18.             offset = LuxWaterUtils.GetGestnerDisplacement (pos, Description, TimeOffset);
19.         }
20.  
21. }

and one more thing.
this is where the hull / water object component should be for normal submersion

this is where it would be if aligned with deck. but then it's over water

tried fluid density and other variables but doesn't seem to help.
so if there's no other way I guess this hull mesh collider should be set on a separate layer if I wouldn't want to collide it with other things if they are on the ship

or can be more than one hulls / water objects be used for one ship?

 

Not sure why the rendering mask does not work there. Some water assets ship with their own water masks so I would check if Lux provides one. From the screenshots, everything seems fine.

For the demo video, I used the LuxWaterDataProvider used with the assets. I am using the data provided by Lux, and I remember testing quite a lot with it to make sure that different ocean transform positions work fine. Still, I would suggest trying centring the Lux ocean transform to (0,0,0) and see if anything changes. Same for rotation. Not sure if there was something that changed with the updates of Lux so I will re-test.

WaterObject does not use colliders at all, or care about them. The only thing it cares about is the MeshFilter component. So you can have an invisible mesh (MeshRenderer is not needed) that interacts with water. Check the demo boats, I have added stabilizers and a keel to the Racer and it is not visible nor does it have any colliders.

 

thanks.

luxWater seems to have one shader but it looks not for this
LuxWater/Shaders/Resources/LuxWater_WaterMask.shader
it is Hidden, and when creating new material, it is red.

yeah, you're right, the water object doesn't need collider. nice.

update: this depthmask works
https://forum.unity.com/threads/released-lux-water.536631/page-38#post-9047437

one change I did: lowered particles level so it looks better w wavey water
in WaterParticleSystem.cs

Code (CSharp):

1.         [Tooltip("Elevation above water at which the particles will spawn. Used to avoid clipping.")]
2.         [Range(-2f, 0.1f)] public float surfaceElevation = 0.016f;

 

Dynamic Water Physics 2 is on sale for two more days.
Check the link in the signature below.

 

The Dynamic Water Physics 2 sale is ending today.

 

Hey quick question. I'm using Unity 2023. I understand it is experimental and have no expectancies for larger systems to work out of the box right away. But I wanted to ask about using Dynamic Water Physics 2 with the new Unity Water system.

Will this still work with the new water system since its based on planes? Or is that something we don't know yet?

Thanks in advance.

 

HDRP water is not supported officially still because v16 had some API issues and thebdocs have not been updated to match the new API. However, there is an unofficial HDRP water v15 script in the Discord channel. Will be making the official update soon.

 

Hey I forgot to thank you for that. I was able to grab the script from discord and I now have my character using rowboats and pirate ships in Unity 2023 HDRP with Unity's new water system. It only took a couple of minutes!

Thanks! Cant wait to start implementing sails.

 

Glad you got it working

 

It’s there a DWP3 coming? Or is this the one to buy?
Also will this work on consoles, mobile and vr? Like quest 2/3? Which runs android?

 

No, all the assets that have "2" in the name have been released as a major improvement / rewrite to the first version, both as I got more proficient at Unity over the years and to work as a part of NWH Physics World.
The only possible release might be a DOTS version, but that will be in parallel since it is completely different technology.

 

Ok how about the other question? Will this work on mobile and consoles ?

 

Yes, it works on both. It is just using the standard Unity APIs so it will work on whatever Unity supports, and performance-wise, it is very well optimized and gives you the option to adjust the quality of the simulation mesh with one click. 20 ships will not be an issue on any platform.
The biggest performance impact is usually the ocean/water asset that is used. Flat water is extremely fast both in CPU time and rendering, for example.

 

Awesome. Thanks. it seems nothing else matches this asset. you got a banger with this one

I was able to FAKE water driving with a boat but putting an invisible "ground" right under the surface of my water and it works really well. especially with plashes and all that. but i can't "ride" the waves or move with them.so i fake the "wobble" of the boat so it looks like its bobbing around the water. but if i make a big wave or something it won't ride with it. lol not bad for what in did but i prefer a more appropriate/native approach.

 

NWH Vehicle Physics 2 and Dynamic Water Physics 2 are currently both 50% off as a part of the Unity Black Friday/Cyber Week sale!
Check the links in the signature below.

 

The WaterObjectFromScript throws a null pointer exception.

NullReferenceException: Object reference not set to an instance of an object
NWH.DWP2.WaterObjects.WaterObject.Awake () (at Assets/NWH/Dynamic Water Physics 2/Scripts/WaterObject/WaterObject.cs:384)
UnityEngine.GameObject:AddComponent()
NWH.DWP2.DemoContent.WaterObjectFromScript:Start() (at Assets/NWH/Dynamic Water Physics 2/Scripts/WaterObject/WaterObjectFromScript.cs:13)

Looks like it's trying to access the sim mesh before one is created. Am I doing something wrong?

 

Does the mesh you are using work when WaterObject is manually added, outside of play mode?
Thank you for reporting it, I will look into it.

 

I cannot send you the fixed script since your profile is set to not accept DMs, but the fix is to add:

Code (CSharp):

1.                    
2. if (serializedSimulationMesh != null)
3.                     {
4.                         simulationMesh = serializedSimulationMesh.Deserialize();
5.                     }
6.  

And then a few lines later:

Code (CSharp):

1.                 // Serialize only if mesh has been modified
2.                 simulationMesh.name = "DWP_SIM_MESH";
3.  
4.                 if (serializedSimulationMesh == null)
5.                 {
6.                     serializedSimulationMesh = new SerializedMesh();
7.                 }
8.                 serializedSimulationMesh.Serialize(simulationMesh);

 

I’m creating the mesh at runtime. Thanks for the fix.

 

hi, one good thing is how dynamic water physics handles particles

see particles stop when boat is above water


tried to do this with boat VFX
(added dwp's WaterObject and WaterParticleSystem, but it seems is hooked up with the hull mesh, while boat vfx uses particle system's shape
and also using new water object for every particle system seems like an overkill)

could you support that?
maybe the WaterParticleSystem could support more particle systems?

and could you expose the water height in the WaterObject? (that would help much for spray vfx)

 

Hello,
the mentioned included particles are intended for flat water only and usually the WaterParticleSystem would just be attached to the hull.
The water heights are exposed through the WaterObject. There are a few result arrays including the depth of the traingle in question and the center of the triangle, and if you enable debugging/gizmos you will see lines drawn towards the surface of the water, indicating the height.

 

The Unity Cyber Week Sale sale ends on December 6, 2023 at 7:59:59 PT, for those that might be interested in grabbing NWH Vehicle Physics 2 or Dynamic Water Physics 2 at 50% off.

 

Hello, I am using DWP2 with crest in BIRP. I currently have a vessel with the submarine controller, this works fine until the vessel is completely submerged, as soon as the entire model is under the water it spins and sinks constantly, there is no depth it will stop at? Is this the desired behavior?

 

The depth of sinking will depend on the mass of the object which the submarine controller sets, but the spinning could only be caused by the settings for levelling of the submersibles that are also under the submarine controller.